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Journal articles on the topic 'CNG Engines'

Author: Grafiati

Published: 14 March 2023

Last updated: 31 July 2025

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1

Li, Xi Qin, Su Yan Cai, Bing Liu, and Xue Qun He. "Study on Emission Control of CNG Engine Based on D-S Evidence Theory." Applied Mechanics and Materials 109 (October 2011): 281–84. http://dx.doi.org/10.4028/www.scientific.net/amm.109.281.

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To reduce emissions, CNG engines are commonly equipped with three-way catalytic converters. However when the engines run at transient conditions, the air fuel ratio can not be precisely controlled at theoretical value by traditional means, so the catalytic converters can not achieve their desired effect. This paper presents a new method for CNG engines to control air fuel ratio at transient conditions. The moments which intake and exhaust valves open are used as the trigger signals for ECU to collect the test data simultaneously. The dynamic information of CNG engine is detected by multiple se

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2

Jamrozik, Arkadiusz, Wojciech Tutak, and Karol Grab-Rogaliński. "An Experimental Study on the Performance and Emission of the diesel/CNG Dual-Fuel Combustion Mode in a Stationary CI Engine." Energies 12, no. 20 (2019): 3857. http://dx.doi.org/10.3390/en12203857.

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One of the possibilities to reduce diesel fuel consumption and at the same time reduce the emission of diesel engines, is the use of alternative gaseous fuels, so far most commonly used to power spark ignition engines. The presented work concerns experimental research of a dual-fuel compression-ignition (CI) engine in which diesel fuel was co-combusted with CNG (compressed natural gas). The energy share of CNG gas was varied from 0% to 95%. The study showed that increasing the share of CNG co-combusted with diesel in the CI engine increases the ignition delay of the combustible mixture and sho

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HÄNGGI, Severin, Thomas HILFIKER, Patrik SOLTIC, Richard HUTTER, and Christopher ONDER. "Control-oriented analysis of a lean-burn light-duty natural gas research engine with scavenged pre-chamber ignition." Combustion Engines 176, no. 1 (2019): 42–53. http://dx.doi.org/10.19206/ce-2019-106.

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Natural gas is well-suited as a fuel in the transport sector. Due to its excellent combustion characteristics, engines operating with compressed natural gas (CNG) reach high efficiency, especially if operated at lean conditions. However, CNG engine research mainly focusses on stoichiometric conditions in order to use a three-way catalytic converter for the exhaust gas after treatment system. With the objective to explore the potential of CNG engines operated at lean conditions, a turbo-charged CNG engine with high com-pression ratio is developed and optimized for lean operation. In order to in

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4

Nguyen Thanh Tuan, Le Minh Xuan, Nguyen Trung Hieu, Doan Phuoc Tho, and Nguyen Phu Dong. "Research using the CNG fuel system from the petrol fuel system for the honda wave engine." Journal of Technical Education Science, no. 66 (October 28, 2021): 69–75. http://dx.doi.org/10.54644/jte.66.2021.1068.

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The article presents research on Honda wave motorcycle engines using CNG gas based on a corresponding gasoline fuel injection system. In the study, we choose a solution using two nozzles suitable when switching to using CNG fuel. According to the throttle opening, the test results are conducted and can confirm that the engine, when using CNG, has reduced power and torque compared to gasoline. However, using a CNG fuel supply system from the fuel injection system saves time and cost of design and manufacture. The installation is simple, no need to interfere with the engine combustion chamber. A

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Kakaee, Amirhasan, and Majid Karimi. "A Comparative Study on Influence of Natural Gas Composition on the Performance of a CNG Engine." Mapta Journal of Mechanical and Industrial Engineering (MJMIE) 2, no. 3 (2018): 9–18. http://dx.doi.org/10.33544/mjmie.v2i3.76.

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Natural gas is the cleanest fossil fuel and it has high energy conversion efficiencies for power generation in internal combustion engines. Natural gases have varying composition depending on the place where they are produced. This paper studies the effects of natural gas composition on the combustion and emissions characteristics of CNG engines and presents the overall combustion characteristics obtained from running a 1.65 L, 4-cylinder EF 7 CNG engine. Engine power, Torque, BMEP and BSFC were measured under steady state operation conditions at full load conditions. The obtained simulation r

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Permana, Ade Indra. "Performance Analysis of Diesel Engine Simulation Into CNG Engine." AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin 8, no. 2 (2022): 110. http://dx.doi.org/10.32832/ame.v8i2.6944.

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<pre><em>The fundamental problem in meeting fuel consumption for the operation of diesel engines is in terms of costs and ensuring the availability of the fuel. So that the idea of using alternative fuels other than diesel fuel arises. And the recommendation is gas fuel (compressed natural gas) for several reasons including cheaper prices and Indonesia has abundant natural gas reserves. Because the properties of CNG and diesel oil are different, it is necessary to modify the diesel engine before being able to use alternative gas fuels. And in this journal, what is analyzed is the p

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Liu, Yu, Guo Chang Zhao, Zhi Hai Kou, and S. S. Chung. "A Study on the Spray Characteristics of SIDI CNG Engine Based on a Visualization System." Advanced Materials Research 860-863 (December 2013): 1060–64. http://dx.doi.org/10.4028/www.scientific.net/amr.860-863.1060.

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Compressed natural gas (CNG) is regarded as one of the most promising alternative fuels, is widely used for the automobile engines. In order to improve the thermal efficiency of CNG engine, the direct-injection (DI) technology has been adopted. The stratified CNG mixture can be ignited by the spark plug which is installed near the injector nozzle, so the lean combustion can be subsequently achieved. For the direct-injection spark-ignition (DISI) engine, the reliable ignition is a foundational problem for the reliable operation, so it is very important to study on the spray characteristics of D

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Romański, Andrzej, and Elżbieta Cygan-Bączek. "High Performance Valve Seat Materials for CNG Powered Combustion Engines." Materials 14, no. 17 (2021): 4860. http://dx.doi.org/10.3390/ma14174860.

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The conventional copper infiltrated high speed steel (HSS) valve seats used in gasoline engines are not suitable for CNG combustion because the exhaust gas temperature is at least 80 °C higher, which drastically shortens the service life of the engine valves. Therefore, a proprietary high-alloy HSS-base material was designed to combat hot corrosion and mechanical wear of valve seat faces in CNG fuelled engines. A batch of −100 mesh water atomized HSS powder was commissioned. The powder was vacuum annealed in order to reduce oxygen content and increase its compressibility. To improve the final

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9

SOLTIC, Patrik, Thomas HILFIKER, Richard HUTTER, and Severin HÄNGGI. "Experimental comparison of efficiency and emission levels of four-cylinder lean-burn passenger car-sized CNG engines with different ignition concepts." Combustion Engines 176, no. 1 (2019): 27–35. http://dx.doi.org/10.19206/ce-2019-104.

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Today’s passenger car CNG engines are based on petrol engines which typically have restrictions preventing the exploitation of the full potential of methane based fuels, especially if they have to be operated also on petrol as a second fuel. Additionally, the use of three-way-catalysis limits the engine operation to λ = 1. Here, we present the efficiency potential and the raw emission characteristics for a dedicated four cylinder passenger car CNG engine without sticking to the usual combustion peak pressure and λ limitations. Lean com-bustion reduces the knocking tendency but, because of the

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10

Ali, Mas Fawzi Mohd, Amir Khalid, and Yoshiyuki Kidoguchi. "Effect of Two-Stage Injection Timing on a Gas-Jet Ignition CNG Engine." Applied Mechanics and Materials 663 (October 2014): 342–46. http://dx.doi.org/10.4028/www.scientific.net/amm.663.342.

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Compressed natural gas (CNG) engines normally operate in lean condition to take the advantage of higher efficiency and better fuel economy. Several studies have shown that gas-jet ignition with two-stage injection technique is effective to extend the lean combustible range of CNG engines. This paper investigates the effectiveness of such technique using a prototype lean burn direct injection CNG engine. The experiment was conducted at speed of 900 rpm, fuel injection pressure of 3 MPa, equivalence ratio φ=0.8, and ignition timing at top dead center. The effect of first injection timing on the

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Ilves, Risto, Rauno Põldaru, Andres Annuk, and Jüri Olt. "THE IMPACT OF A TWO-PHASE DIESEL FUEL PILOT INJECTION ON THE COMPRESSED NATURAL GAS AIR–FUEL MIXTURE COMBUSTION PROCESS IN A DIESEL ENGINE." Transport 37, no. 5 (2022): 330–38. http://dx.doi.org/10.3846/transport.2022.17938.

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Nowadays, there is a global trend towards the use of alternative fuels in order to reduce environmental pollution. For example, Compressed Natural Gas (CNG) has become more widely used around the world. The use of different fuels in engines affects the combustion process and efficiency, with the latter potentially being reduced by such means as, for example, the use of gaseous fuels in conventional diesel engines. Therefore, it is also important to know how CNG combusts in a diesel engine and how the combustion process can be improved. Consequently, the aim of the study is to give an overview

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KUMAR, Neeraj, Bharat Bhushan ARORA, and Sagar MAJI. "Experimental Evaluation of CNG Substitution Ratio on Exhaust Gas Emissions of Diesel/CNG Dual Fuel Combustion." Mechanics 29, no. 5 (2023): 432–37. http://dx.doi.org/10.5755/j02.mech.33638.

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The addition of Compressed natural gas as a complement to diesel in compression ignition engines in dual-fuel combustion mode is a viable technology for increasing efficiency and lowering emissions. This work investigates the impact of a dual-fuel operating mode on the engine exhaust pollutant emissions of a diesel engine using compressed natural gas as the principal fuel and neat diesel as the pilot fuel. Compressed natural gas was injected into an intake manifold of a single-cylinder diesel test engine under different engine operating parameters, and up to 80% substitution was attained. And

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Herynek, Roland, Kaufmann Heiko Kaiser, Winfried Langer, and Frank Miller. "Future Engine Control for Spark-Ignited CNG Engines." ATZautotechnology 12, no. 3 (2012): 42–47. http://dx.doi.org/10.1365/s35595-012-0120-1.

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Herynek, Roland, Heiko Kaiser, Winfried Langer, and Frank Miller. "Future Engine Control for Spark-Ignited CNG Engines." Auto Tech Review 1, no. 12 (2012): 34–38. http://dx.doi.org/10.1365/s40112-012-0191-9.

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Herynek, Roland, Kaufmann Heiko Kaiser, Winfried Langer, and Frank Miller. "Future Engine Control for Spark-Ignited Cng Engines." Auto Tech Review 3, no. 8 (2014): 30–35. http://dx.doi.org/10.1365/s40112-014-0715-6.

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Herynek, Roland, Heiko Kaiser, Winfried Langer, and Frank Miller. "Future Engine Control For Spark-Ignited CNG Engines." MTZ worldwide 73, no. 6 (2012): 42–46. http://dx.doi.org/10.1007/s38313-012-0187-5.

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Maehara, Mitsuhiro, Kuniaki Nakajima, Takenori Fukushima, et al. "Operation of a Two-Stroke S. I. Engine with Scavenging-Port Injection of CNG(CNG and Alternative Fuels, CNG Engines)." Proceedings of the International symposium on diagnostics and modeling of combustion in internal combustion engines 2004.6 (2004): 409–15. http://dx.doi.org/10.1299/jmsesdm.2004.6.409.

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Fawzi, Mas, Mohd Norfaiz Hashim, Fathul Hakim Zulkifli, and Shahrin Hisham Amirnordin. "Optimizing the Ignition Timing of a Converted CNG Mono-Gas Engine." Applied Mechanics and Materials 554 (June 2014): 474–78. http://dx.doi.org/10.4028/www.scientific.net/amm.554.474.

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Governmental policies on renewable energy and environmental act are aggressively being enforced to mitigate recent climate change. Natural gas is not renewable but it is the most abundant and has the lowest Lifecycle CO2emission among fossil fuel. Realizing such promising alternative, many logistics and transportation companies are converting their existing diesel-fueled vehicle to CNG-fueled. Researchers have shown that CNG engines offer advantages compared to diesel and gasoline engines such as high efficiency and low emissions. Prior to this work, a 4.3L 4-cylinder diesel engine was modifie

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Yontar, Ahmet Alper, and Yahya Doğu. "Effects of equivalence ratio and CNG addition on engine performance and emissions in a dual sequential ignition engine." International Journal of Engine Research 21, no. 6 (2019): 1067–82. http://dx.doi.org/10.1177/1468087419834190.

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Compared to widening usage of CNG in commercial gasoline engines, insufficient but increasing number of studies have appeared in the open literature during last decades, while engine characteristics need to be quantified in exact numbers for each specific fuel and engine. CNG usage in spark-ignition engine offers many advantages such as high specific power outputs, knock resistance, and low CO2 emission. Engine performance and emissions are strong functions of equivalence ratio. This study focuses on determination of the effects of equivalence ratio on engine performance and emissions for a un

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Rahmad, Hadi, Mujahid Wahyu, and Devina Rosa Hendarti. "Pengaruh Temperatur Mesin Terhadap Kadar Emisi NOx pada Motor dengan Bahan Bakar Compressed Natural Gas (CNG)." Jurnal Energi dan Teknologi Manufaktur (JETM) 3, no. 02 (2020): 1–4. http://dx.doi.org/10.33795/jetm.v3i02.59.

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The increase in NOx levels produced by CNG-fueled engines occurs when the fuel switches from gasoline to gas fuel (CNG). The author changed the otto 4 stroke gasoline engine, into a CNG-fueled motorbike and provided additional cooling in the form of a burst of air to the cylinder block. Changes in engine block temperature are detected using a temperature sensor placed on the engine oil. Bursts of air cooling result in temperature changes in engine oil. Changes in engine oil temperature are accompanied by changes in the resulting NOx emissions. This study shows that with a decrease in engine oi

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Alimin, Ahmad Jais, Muhammad Yusri Ismail, and Shahrul Azmir Osman. "Predicting the Performance and Emissions Characteristics of a Medium Duty Engine Retrofitted with Compressed Natural Gas System Using 1-Dimensional Software." Applied Mechanics and Materials 699 (November 2014): 702–7. http://dx.doi.org/10.4028/www.scientific.net/amm.699.702.

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The rise of crude oil price and the implications of exhaust emissions to the environment from combustion application call for a new reliable alternative fuel. A potential alternative fuel for compression ignition (C.I.) engine is the compressed natural gas (CNG). For C.I. engines to operate using CNG, or to be converted as a retrofitted CNG engine, further modifications are required. Previous works reported loss in brake power (BP) and increase in hydrocarbon (HC) emission for C.I. engine retrofitted with CNG fuelling. Verification of performance characteristics for CNG retrofitted engine thro

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Alimin, Ahmad Jais, Muhammad Yusri Ismail, and Shahrul Azmir Osman. "Predicting the Performance and Emissions Characteristics of a Medium Duty Engine Retrofitted with Compressed Natural Gas System Using 1-Dimensional Software." Applied Mechanics and Materials 660 (October 2014): 468–73. http://dx.doi.org/10.4028/www.scientific.net/amm.660.468.

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The rise of crude oil price and the implications of exhaust emissions to the environment from combustion application call for a new reliable alternative fuel. A potential alternative fuel for compression ignition (C.I.) engine is the compressed natural gas (CNG). For C.I. engines to operate using CNG, or to be converted as a retrofitted CNG engine, further modifications are required. Previous works reported loss in brake power (BP) and increase in hydrocarbon (HC) emission for C.I. engine retrofitted with CNG fuelling. Verification of performance characteristics for CNG retrofitted engine thro

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Osman, Shahrul Azmir, Ahmad Jais Alimin, Mohd Yusri Ismail, and Koh Wern Hui. "Performance and Emission Characteristics of Direct Injection C.I Engine Retrofitted with Mono-CNG System." Applied Mechanics and Materials 446-447 (November 2013): 443–47. http://dx.doi.org/10.4028/www.scientific.net/amm.446-447.443.

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Diesel engines are widely used in logistics and haulage as vehicular prime movers. In the mechanized and fast-moving forward world of today, the consumption of petroleum products has become an important yardstick of a country’s prosperity. This ever-increasing consumption has led the world to face the twin challenge of energy shortage and environmental deterioration. Natural gas has been one of the highly considered alternative fuels for both spark ignition (S.I) and compressed ignition (C.I.) engines. The advantages and benefits of CNG have made it the preferred choice as alternative fuel in

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Singh, Rohit, and Akhilesh Mimani. "An application of dereverberation and multiplicative beamforming techniques for imaging noise sources generated by boat engines." Journal of the Acoustical Society of America 154, no. 4_supplement (2023): A225. http://dx.doi.org/10.1121/10.0023354.

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This paper demonstrates the application of a dereverberation algorithm for localizing noise sources emitted from two-stroke boat engines in three dimensions domain. The engines considered have a maximum RPM of 1500 and 1200 cc. It is important to note that these engines are operated with both petrol and CNG. The investigation primarily focuses on the noise generated under various loading conditions and aims to differentiate the noise characteristics between petrol and CNG engine operations. The dereverberation algorithm is applied to enhance the accuracy of noise source localization in this st

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Namar, Mohammad Mostafa, Omid Jahanian, Kamyar Nikzadfar, and Rouzbeh Shafaghat. "The comparative performance study of the EF7 downsized engines; fuel economy besides CO2 reduction." Future Technology 3, no. 3 (2024): 20–32. http://dx.doi.org/10.55670/fpll.futech.3.3.4.

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Engine downsizing is considered a strategic idea in fuel economy enhancement as well as reduction. It is defined in the literature as the decrease in engine geometrical dimensions besides its performance being fixed. In this research, the Iranian gasoline-fueled national engine, EF7, has been investigated for 25% downsizing. After introducing the gasoline-fueled and CNG-fueled versions of downsized engines, their performance, besides release rates are studied in detail. A one-dimensional engine simulator coupled with a 3D-CFD model is developed to carry out such an investigation, an experiment

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STELMASIAK, Zdzisław, Jerzy LARISCH, and Dariusz PIETRAS. "The influence of natural gas additive on the smoke level generated by diesel engines." Combustion Engines 161, no. 2 (2015): 78–88. http://dx.doi.org/10.19206/ce-116895.

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The paper presents the results of investigations performed on a Fiat 1.3 MultiJet engine fueled with natural gas (CNG) and diesel oil. The primary aim was to determine the influence of a small additive of natural gas on the exhaust gas opacity under variable engine operating conditions. The tests were performed for the engine work points n–Mo (engine speed– torque) reproducing the NEDC cycle. The selection of the work points was carried out according to the criterion of greatest share in the NEDC homologation test, covering the entire engine field of work used in the realization of the test on

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Kadam, Sumit A., Debjyoti Bandyopadhyay, Nishant S. Kulkarni, Sandeep D. Rairikar, and S. S. Thipse. "Upgrading the performance of a six-cylinder CNG Engine with the induction of Turbocharger for HCV application." International Journal of Current Engineering and Technology 11, no. 04 (2021): 418–25. http://dx.doi.org/10.14741/ijcet/v.11.4.4.

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The world is having catastrophe of environmental pollution and fossil fuel depletion. Adaptation of alternative fuels is a healthy solution in reducing exhaust emissions in the automobile sector. Compressed Natural Gas (CNG) as a fleet fuel has played a vital role in the HCV sector. Many developmental and optimization work has been taken place for the CNG engines in the recent times. Due to the recent upsurge in diesel prices, the HCV sector is moving towards the CNG fuel vehicle. The HCV sector requires a heavy performance engine for its day-to-day application. In this research paper a baseli

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WEIßNER, Michael, Frank BEGER, Martin SCHÜTTENHELM, and Gunesh TALLU. "Lean-burn CNG engine with ignition chamber: from the idea to a running engine." Combustion Engines 176, no. 1 (2019): 3–9. http://dx.doi.org/10.19206/ce-2019-101.

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Current and further developing CO2- and emission regulations worldwide and the competition to full electric mobility deliver a chal-lenge for internal combustion engines in general. A state of the art solution is the use of natural gas mainly contending methane to reduce CO2 significantly and to offer lowest emission levels. The EU-funded project GasOn developed engine concepts to fully exploit the advantages of CNG. This article describes the development of an innovative, monovalent engine dedicated to Compressed Natural Gas (CNG) and characterised by the lean burn concept and the innovative

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Yang, Jun, Jian Wang, Xuesheng Zhou, and Yanxiao Li. "Stochastic Air-Fuel Ratio Control of Compressed Natural Gas Engines Using State Observer." Mathematical Problems in Engineering 2020 (March 12, 2020): 1–8. http://dx.doi.org/10.1155/2020/2028398.

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In this paper, the air-fuel ratio regulation problem of compressed natural gas (CNG) engines considering stochastic L2 disturbance attenuation is researched. A state observer is designed to overcome the unmeasurability of the total air mass and total fuel mass in the cylinder, since the residual air and residual fuel that are included in the residual gas are unmeasured and the residual gas reflects stochasticity. With the proposed state observer, a stochastic robust air-fuel ratio regulator is proposed by using a CNG engine dynamic model to attenuate the uncertain cyclic fluctuation of the fre

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Ramasamy, D., K. Kadirgama, M. M. Noor, and M. M. Rahman. "Experiments on Dissimilar Valve Lift (DVL) for Turbulence Increment on a Bi-Fuel Compressed Natural Gas (CNG) Engine." Defect and Diffusion Forum 370 (January 2017): 19–28. http://dx.doi.org/10.4028/www.scientific.net/ddf.370.19.

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Current engines are readily available for CNG bi-fuel conversions because it requires only minor engine modifications. However, CNG flame speed is lower than gasoline, therefore reducing the power and range of the vehicle when operating on CNG. This situation can be improved by increasing the flame speed via higher turbulence generated by swirl motion. A computational fluid dynamics (CFD) model was used to analyse the swirl generated by dissimilar valve lift (DVL) profiles on the intake valve. A 3D engine simulation shows differences in swirl motion and turbulence between the original symmetri

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SZPICA, Dariusz, and Marcin DZIEWIĄTKOWSKI. "Catalyst Conversion Rates Measurement on Engine Fueled with Compressed Natural Gas (CNG) Using Different Operating Temperatures." Mechanics 27, no. 6 (2021): 492–97. http://dx.doi.org/10.5755/j02.mech.30164.

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Further restrictions on the use of compression-ignition engines in transportation are prompting the search for adaptations to run on other fuels. One of the most popular alternative fuels is Compressed Natural Gas (CNG), which due to its low carbon content can be competitive with classical fuels. This paper presents the results of testing a Cummins 6BT compression ignition engine that has undergone numerous modifications to convert to CNG power. The sequential gas injection system and the ignition system were installed in this engine. The compression ratio was also lowered from 16.5 to 11.5 by

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Ingawale, Shrikant Madan, J. S. Bagi, and L. S. Nikam. "Comparative study of a performance of an internal combustion engine and its emission working on conventional fuel (Diesel) and alternative fuel (Bio-CNG)." Journal of Mechanical and Energy Engineering 6, no. 1 (2022): 67–76. http://dx.doi.org/10.30464/jmee.2022.6.1.67.

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Currently, the world is facing problems regarding environmental pollutions due to the combustion of fossil fuels. The combustion of fossil fuels emits greenhouse gases that lead to the greenhouse effect. The main symptom of the greenhouse effect is increased earth surface temperature. Also, the resources of fossil fuels are depleting rapidly and can take thousands of years to reproduce, so the time has come to go for lesser polluting renewable fuels. In this research, Bio-CNG is considered as an alternative fuel to conventional fuel i.e. Diesel. The performance test on four-stroke IC Engines w

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FLEKIEWICZ, Marek, and Grzegorz KUBICA. "Current status and prospects for the use of low-carbon gaseous fuels in transport." Combustion Engines 160, no. 1 (2015): 62–72. http://dx.doi.org/10.19206/ce-116904.

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The paper presents a detailed analysis of the issues related to an improvement of the efficiency of energy conversion in SI engines, fueled by low-carbon gaseous fuels. The research was conducted on an engine fueled with natural gas (CNG) and methane/hydrogen blends. The applied gaseous fuels are characterized by a reduced share of carbon, which enables a reduction of the emission of CO2. The object of the research was a 1.6 dm3, 4-cylinder engine originally fitted in Opel Astra F. The engine was equipped with a CNG injection system. The final analysis includes the influence of the ignition ad

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Warguła, Łukasz, Mateusz Kukla, Piotr Lijewski, Michał Dobrzyński, and Filip Markiewicz. "Impact of Compressed Natural Gas (CNG) Fuel Systems in Small Engine Wood Chippers on Exhaust Emissions and Fuel Consumption." Energies 13, no. 24 (2020): 6709. http://dx.doi.org/10.3390/en13246709.

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The projected increase in the availability of gaseous fuels by growing popularity of household natural gas (NG) filling stations and the increase in the production of gaseous biogas-derived fuels is conducive to an increase in the use of NG fuel. Currently, natural gas in various forms (compressed natural gas (CNG), liquefied natural gas (LNG)) is popular in maritime, rail and road transport. A new direction of natural gas application may be non-road mobile machines powered by a small spark-ignition engine (SI). The use of these engines in the wood chippers can cause the reduction of machine c

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FABIŚ, Paweł, Bartosz FLEKIEWICZ, and Marek FLEKIEWICZ. "On board recognition of different fuels in SI engines with the use of dimensional and non-dimensional vibration signal parameters." Combustion Engines 136, no. 1 (2009): 69–75. http://dx.doi.org/10.19206/ce-117222.

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Gaseous fuels such as natural gas and propane butane mixtures are currently the most popular fuels for dual fuel internal combustion engines. Gaseous fuels are more resistant to knocking than conventional liquid fuels they mix better with air. There have been many published works on the use of gaseous fuels but the problem of the combustion noise, as a very important source of acoustic discomfort is not getting enough attention. Combustion noise occurs in a direct and indirect form. It is transmitted throughout the engine block as a vibration at a different spectrum of frequencies. In this stu

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Wiśniowski, Piotr, Magdalena Zimakowska-Laskowska, Paweł Mazuruk, Sławomir Taubert, and Michał Stankiewicz. "Optimization and Performance Evaluation of Diesel Oxidation Catalysts for Methane Removal in Dual-Fuel Diesel–CNG Engines." Energies 18, no. 8 (2025): 1985. https://doi.org/10.3390/en18081985.

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Compressed natural gas (CNG) in dual-fuel diesel engines offers environmental benefits but significantly increases unburned methane (CH4) emissions, especially at low engine loads. This study investigates the effectiveness of different catalytic converters in methane oxidation under transient test conditions (WHTC). Three types of catalysts (Pt-, Rh-, and Pd-based) were evaluated using a combined approach of empirical engine bench tests and mathematical modelling. The results showed that, under actual exhaust gas temperature conditions, the average methane conversion efficiencies were 3.7% for

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Barhm, Mohamad. "A SIMULATE MODEL FOR ANALYZING THE EFFECT OF ENGINE DESIGN PARAMETERS ON THE PERFORMANCE AND EMISSIONS OF SPARK IGNITION ENGINES." INTERNATIONAL JOURNAL OF MECHANICAL ENGINEERING AND TECHNOLOGY (IJMET) 4, no. 5 (2013): 2. https://doi.org/10.5281/zenodo.572371.

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A mathematical and simulation model has been developed to simulate a spark ignition engine operation cycle. The programme written from this simulation model and modified so can be used to assist in the design of a spark ignition engine for alternative fuels as well as to study many design parameters such as the effect of engine design parameter like stroke and diameter of the cylinder on the performance and exhaust emissions of spark ignition engines. In this paper, the description of three type of engines design parameters according to (stroke/diameter) which are called under square, square a

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Sutkowski, Marek, and Andrzej Teodorczyk. "A Numerical Analysis of Methane Direct Injection System for Spark Ignition Engines(CNG and Alternative Fuels, CNG Engines)." Proceedings of the International symposium on diagnostics and modeling of combustion in internal combustion engines 2004.6 (2004): 395–400. http://dx.doi.org/10.1299/jmsesdm.2004.6.395.

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BIELACZYC, Piotr, and Andrzej SZCZOTKA. "The potential of current european light duty CNG-fuelled vehicles to meet Euro 6 requirements." Combustion Engines 151, no. 4 (2012): 20–33. http://dx.doi.org/10.19206/ce-117018.

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Natural gas is one of the most promising alternative fuels to meet the new stringent Euro 6 emissions regulations in the European Union, as well as the planned CO2 emissions reductions. For spark-ignition (SI) engines, bi-fuel fuelling equipment is widely available and engine conversion technology for European automobiles is well established, thereby facilitating usage of CNG in this engine type. This study investigates the implications of natural gas fuelling of a passenger car featuring a spark-ignition engine regarding the possibility of meeting Euro 6 emissions limits for gaseous pollutant

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Parthasarathy, M., P. V. Elumalai, M. Murunachippan, et al. "Influence of Injection Pressure on the Dual-Fuel Mode in CI Engines Fueled with Blends of Ethanol and Tamanu Biodiesel." International Journal of Chemical Engineering 2022 (November 28, 2022): 1–13. http://dx.doi.org/10.1155/2022/6730963.

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The acceleration of global warming is primarily attributable to nonrenewable energy sources such as conventional fossil fuels. The primary source of energy for the automobile sector is petroleum products. Petroleum fuel is depleting daily, and its use produces a significant amount of greenhouse emissions. Biofuels would be a viable alternative to petroleum fuels, but a redesign of the engine would be required for complete substitution. The use of CNG in SI engines is not new, but it has not yet been implemented in CI engines. This is due to the fuel having a greater octane rating. The sole use

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Pukalskas, Saugirdas, Donatas Kriaučiūnas, Alfredas Rimkus, Grzegorz Przybyła, Paweł Droździel, and Dalibor Barta. "Effect of Hydrogen Addition on the Energetic and Ecologic Parameters of an SI Engine Fueled by Biogas." Applied Sciences 11, no. 2 (2021): 742. http://dx.doi.org/10.3390/app11020742.

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The global policy solution seeks to reduce the usage of fossil fuels and greenhouse gas (GHG) emissions, and biogas (BG) represents a solutions to these problems. The use of biogas could help cope with increased amounts of waste and reduce usage of fossil fuels. Biogas could be used in compressed natural gas (CNG) engines, but the engine electronic control unit (ECU) needs to be modified. In this research, a spark ignition (SI) engine was tested for mixtures of biogas and hydrogen (volumetric hydrogen concentration of 0, 14, 24, 33, and 43%). In all experiments, two cases of spark timing (ST)

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PIELECHA, Ireneusz, Wojciech BUESCHKE, Maciej SKOWRON, et al. "Prechamber optimal selection for a two stage turbulent jet ignition type combustion system in CNG-fuelled engine." Combustion Engines 176, no. 1 (2019): 16–26. http://dx.doi.org/10.19206/ce-2019-103.

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Searching for further reduction of fuel consumption simultaneously with the reduction of toxic compounds emission new systems for lean-mixture combustion for SI engines are being discussed by many manufacturers. Within the European GasOn-Project (Gas Only Internal Combustion Engines) the two-stage combustion and Turbulent Jet Ignition concept for CNG-fuelled high speed engine has been proposed and thoroughly investigated where the reduction of gas consumption and increasing of engine efficiency together with the reduction of emission, especially CO2 was expected. In the investigated cases the

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Hajialimohammadi, Alireza, Saeed Ahmadisoleymani, Amir Abdullah, Omid Asgari, and Foad Rezai. "Design and Manufacturing of a Constant Volume Test Combustion Chamber for Jet and Flame Visualization of CNG Direct Injection." Applied Mechanics and Materials 217-219 (November 2012): 2539–45. http://dx.doi.org/10.4028/www.scientific.net/amm.217-219.2539.

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Constant volume transparent test combustion chambers are extensively used for investigating injection and fuel burning properties of various combustion engines. Their configuration depends on the engine type and the research purpose. Material of components, shape and dimensions of the chamber and its parts, ease of use, accessibility, sealing and safety of the assembly are the parameters needed to be considered in designing the test cell. This paper explains, structural design of a test combustion chamber and its optical windows using finite element analysis of ANSYS 12.0 software for bearing

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Ballerini, Alberto, Tommaso Lucchini, and Angelo Onorati. "Numerical Assessment of a Heavy-Duty (HD) Spark Ignition (SI) Biogas Engine." Energies 18, no. 1 (2024): 51. https://doi.org/10.3390/en18010051.

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This paper examines the feasibility of converting a Heavy-Duty (HD) Spark Ignition (SI) Compressed Natural Gas (CNG) engine to biogas fuel. A One-Dimensional (1D) simulation tool was used to model a commercially available HD SI CNG engine. The model was validated by comparing experimental and computed in-cylinder pressure, brake power, fuel, and air mass flow rates. The engine was then modified to use biogas with an injection system based on existing designs from the literature. A Spark Advance (SA) sweep was performed to assess the engine’s performance at full load. The chosen equivalence rat

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GIS, Wojciech, Edward MENES, and Jerzy WAŚKIEWICZ. "The analysis of the potential for the use of gaseous fuels in the municipal bus transit in Poland – part 2." Combustion Engines 150, no. 3 (2012): 17–26. http://dx.doi.org/10.19206/ce-117027.

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The paper discusses issues related to the use of compressed natural gas (CNG) in combustion engines particularly in municipal bus transport. The ecological aspects of the use of natural gas in road transport have been analyzed particularly the exhaust emissions in comparison to the emissions from diesel engines. Advantages and disadvantages of natural gas fueling as well as the current level of CNG use in transport have been presented both in Poland and worldwide. The authors have also indicated the motivating arguments for the use of natural gas.

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GIS, Wojciech, Edward MENES, and Jerzy WAŚKIEWICZ. "The analysis of the potential for the use of gaseous fuels in the municipal bus transport in Poland – part 1." Combustion Engines 148, no. 1 (2012): 82–88. http://dx.doi.org/10.19206/ce-117055.

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The paper discusses issues related to the use of compressed natural gas (CNG) in combustion engines particularly in municipal bus transport. The ecological aspects of the use of natural gas in road transport have been analyzed particularly the exhaust emissions in comparison to the emissions from diesel engines. Advantages and disadvantages of natural gas fueling as well as the current level of CNG use in transport have been presented both in Poland and worldwide. The authors have also indicated the motivating arguments for the use of natural gas.

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Lebedevas, Sergejus, Laurencas Raslavičius, and Martynas Drazdauskas. "Comprehensive Correlation for the Prediction of the Heat Release Characteristics of Diesel/CNG Mixtures in a Single-Zone Combustion Model." Sustainability 15, no. 4 (2023): 3722. http://dx.doi.org/10.3390/su15043722.

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Fuel combinations with substantial differences in reactivity, such as diesel/CNG, represent one of the most promising alternative combustion strategies these days. In general, the conversion from diesel to dual-fuel operation can be performed in existing in-use heavy-duty compression-ignition engines with minimum modifications, which guarantee very little particles, less nitrogen oxide (NOx), and reduced noise by half compared to diesel. These factors make it feasible to retrofit a CNG fuel system on an existing diesel engine to operate it in dual fuel mode. However, the single-zone combustion

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Karczewski, Mirosław, and Grzegorz Szamrej. "Experimental Evaluation of the Effect of Replacing Diesel Fuel by CNG on the Emission of Harmful Exhaust Gas Components and Emission Changes in a Dual-Fuel Engine." Energies 16, no. 1 (2023): 475. http://dx.doi.org/10.3390/en16010475.

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The constant development of civilization increases environmental pollution as a result of industrial activity and transport. Consequently, human activity in this area is restricted by regulations governing the permissible emission of harmful substance components into the environment. These include substances emitted by combustion engines, the use of which remains high in many industries. Consequently, research is being conducted to reduce the emissions of harmful exhaust components from existing and newly manufactured internal combustion engines. This research presents a used semi-truck engine

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Nakhawa, Husein Adam, and S. S. Thipse. "Characterization of the Ultrafine and Nano Particle Emissions on Modified Indian Driving Cycle for Passenger Cars Operating on CNG Phase Wise Analysis." Advanced Engineering Forum 14 (October 2015): 86–96. http://dx.doi.org/10.4028/www.scientific.net/aef.14.86.

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The ultrafine and nano particles compared to larger particles are gaining high importance because of their vulnerable effects to environment and human health causing respiratory problems, cardiovascular disease, and various types of cancers leading to premature death [1]. WHO report points out that approximately, two thirds of the global burden of disease due to urban outdoor air pollution is mostly from the developing countries in Asia (Cohen et al. 2004)[2]. By number, nearly all of the particles emitted by a diesel engine are nanoparticles which are also true for gasoline engines [3]. This

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Yuvenda, Dori, Bambang Sudarmanta, Jamaludin Jamaludin, et al. "Combustion and Emission Characteristics of CNG-Diesel Dual Fuel Engine with Variation of Air Fuel Ratio." Automotive Experiences 5, no. 3 (2022): 507–27. http://dx.doi.org/10.31603/ae.7807.

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Compressed natural gas (CNG) is a popular alternative fuel because of its more environmentally friendly properties than fossil fuels , including applications in diesel engines. However, supplying too much compressed natural gas fuel causes poor engine performance and emissions due to a decrease in the air-fuel ratio on the dual-fuel engine. The addition of air using electric superchargers was done to return the air-fuel ratio to ideal conditions. Lambda value (λ) was variation under low load (1.52 to 2.71), medium load (1.18 to 2.17), and high load (0.94 to 2.17) on a CNG-diesel dual fuel engi

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