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Academic literature on the topic 'Temperature measuring instruments Engines'
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Journal articles on the topic "Temperature measuring instruments Engines"
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Giechaskiel, Barouch, Alessandro A. Zardini, and Michael Clairotte. "Exhaust Gas Condensation during Engine Cold Start and Application of the Dry-Wet Correction Factor." Applied Sciences 9, no. 11 (2019): 2263. http://dx.doi.org/10.3390/app9112263.
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Gas components, like carbon monoxide (CO) and dioxide (CO2), can be measured on a wet- or dry-basis depending on whether the water is left or removed from the sample before analysis. The dry concentrations of gaseous components in the exhaust from internal combustion engines are converted to wet concentrations with conversion factors based on the combustion products and the fuel properties. Recent CO2 measurements with portable emissions measurement systems (PEMS) compared to laboratory grade equipment showed differences during the first minutes after engine start. In this study we compared instruments measuring on a dry- and wet-basis using different measuring principles (non-dispersive infrared detection (NDIR) and Fourier-transform infrared spectroscopy (FTIR)) at the exhaust of gasoline, compressed natural gas (CNG), and diesel light-duty and L-category vehicles. The results showed an underestimation of the CO2 and CO mass emissions up to 13% at cold start when the conversion factor is applied and not direct “wet” measurements are taken, raising concerns about reported CO2 and CO cold start emissions in some cases. The underestimation was negligible (<1%) for CO2 when the whole test (20–30 min) was considered, but not for CO (1%–10% underestimation) because the majority of emissions takes place at cold start. Exhaust gas temperature, H2O measurements and different expressions of the dry-wet corrections confirmed that the differences are due to condensation at the exhaust pipes and aftertreatment devices when the surface temperatures are lower than the dew point of the exhaust gases. The results of this study help to interpret differences when comparing instruments with different principles of operation at the same location, instruments sampling at different locations, or the same instrument measuring different driving test cycles or at different ambient temperatures (e.g., −7 °C).
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Bujoreanu, Carmen, Eugen Golgoţiu, Sorinel Gicu Talif, and Gheorghe Manolache. "Experimental Investigation on Functional Parameters of the Engines Exhaust Mufflers." Applied Mechanics and Materials 822 (January 2016): 224–29. http://dx.doi.org/10.4028/www.scientific.net/amm.822.224.
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The paper presents the results obtained by investigating some functional parameters as the noise level, the pressure – drop and the temperatures of three different manufacturing solutions for mufflers. The results emphasize the corroboration between these parameters and contribute to the improvement of the muffler fabrication and design since it is a complex function that affects noise characteristics, emission and fuel efficiency of engine. It was designed a measurement chain for the noise level evaluation of the mufflers including a microphone Bruel&Kjaer type 4133, a Impulse Precision Sound Level Meter Bruel&Kjaer, type 2209, with standard filters and a multifunctional external data acquisition board type-NI DAQPad-6015 . We assessed the noise level, using two based LabVIEW virtual instruments, measuring total band power and the equivalent continuous sound pressure level. It was also created a measurement chain for the pressure – drop evaluation and temperature distribution on the external surface of the mufflers.
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Pokusaev, Mikhail Nikolaevich, Alexei Viktorovich Trifonov, and Vasiliy Aleksandrovich Kostyrenko. "TESTING PLANT FOR ENGINE WITH ENERGY EFFICIENT COOLING SYSTEM." Vestnik of Astrakhan State Technical University 2021, no. 1 (2021): 15–21. http://dx.doi.org/10.24143/1812-9498-2021-1-15-21.
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The article focuses on developing a new testing system for the Iveco 8041I06 55 R900 engine in the laboratory “Marine Diesels” under Astrakhan state technical university in the event of modernizing the test benches with ship engines. There has been considered creating an ex-perimental unit for conducting heat-balance tests of a marine engine using modern measurement and control tools. The unit consists of a converted engine powered by a generator. The engine will be tested according to the generator characteristic. There is given the data on the main technical parameters of the tested engine and on the potential configuration of the instrument base. As a load for the generator, it is planned to use a resistive load device. A fuel micro-meter will be used to measure the fuel consumption. Flow meters are selected for measuring the flow rates. Heat carriers and temperature sensors are selected for measuring temperature of the exhaust gases. The parameters of the engine under consideration are compared with the requirements of the Russian River Register for marine engines. The scope of work on converting an industrial engine into a marine engine in terms of the modernization of the cooling system has been described. The unit is designed to study the ship's cooling system operation, in which the control is carried out by changing the speed of the suspended pump depending on the temperature of the seawater. There was selected 
 a pump and a device to regulating its rotating speed. The positive effect is achieved by reducing the power consumed by the pump. It saves the fuel and reduces the environmental damage due to the lower carbon dioxide emissions
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Giechaskiel, Barouch, Tero Lähde, Matthias Schwelberger, et al. "Particle Number Measurements Directly from the Tailpipe for Type Approval of Heavy-Duty Engines." Applied Sciences 9, no. 20 (2019): 4418. http://dx.doi.org/10.3390/app9204418.
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The type approval of heavy-duty engines requires measurement of particulates downstream of a proportional to the exhaust flow partial flow dilution system. However, for particle number systems, which measure in real time, this is not necessary and a fixed dilution could be used. In order to assess this dilution possibility, an inter-laboratory exercise was conducted, where a “Golden” system measuring directly from the tailpipe with “hot” (150 °C) fixed dilution was compared with the laboratory regulated systems. Additional “Golden” counters were measuring from 10 nm, below the current cut-off size of 23 nm defined in the regulation, in order to collect data below 23 nm and to confirm that the direct sampling is also possible for smaller sizes. Seven diesel engines and two CNG (compressed naturals gas) engines were used in six laboratories. The results of the “Golden” instruments were within 25% in most cases, reaching 40% in two laboratories for both >23 nm and >10 nm. The repeatability of the measurements (10% to 40%) remained the same for both systems with both cut-off sizes. One test with regeneration showed clear difference between the 10 nm systems, indicating that the thermal pre-treatment only with evaporation tube might not be adequate. Another system measuring from the tailpipe with a fixed “cold” (at ambient temperature) dilution gave differences of up to 50% in most cases (on average +26%). Dedicated tests with this system showed that the differences were the same with fixed or proportional dilution, indicating that it is not the concept that resulted in the overestimation, but the calibration of the system. The main conclusion of this study is that direct sampling with fixed dilution from the tailpipe can be introduced in the future regulation.
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Kumbár, Vojtěch, Adam Polcar, and Jiří Čupera. "Rheological profiles of blends of the new and used motor oils." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 61, no. 1 (2013): 115–21. http://dx.doi.org/10.11118/actaun201361010115.
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The objective of this paper is to find changes of a rheological profile of the new engine oil if the used engine oil will be add. And also find changes of a rheological profile of the used engine oil if the new engine oil will be add. For these experiments has been created the blends of the new and the used engine oil. The temperature dependence of the density [kg.m−3] has been measured in the range of −10 °C and +60 °C. The instrument Densito 30PX with the scale for measuring engine oils has been used. The dynamic viscosity [mPa.s] has been measured in the range of −10 °C and +100 °C. The Anton Paar digital viscometer with the concentric cylinders geometry has been used. In the accordance with the expected behaviour, the density and the kinematic viscosity of all oils was decreasing with the increasing temperature. To the physical properties has been the mathematical models created. For the temperature dependence of the density has been used the linearly mathematical model and the exponentially mathematical model. For the temperature dependence of the dynamic viscosity has been used the polynomial 6th degree. The knowledge of density and viscosity behaviour of an engine oil as a function of its temperature is of great importance, especially when considering running efficiency and performance of combustion engines. Proposed models can be used for description and prediction of rheological behaviour of engine oils.
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Polivyanchuk, A., M. Smirny, S. Romanenko, et al. "RESEARCH OF EFFICIENCY ECOLOGICAL DIAGNOSTICS SYSTEM OF HEAT ENGINES AND BOILER PLANTS." Municipal economy of cities 6, no. 152 (2019): 73–78. http://dx.doi.org/10.33042/2522-1809-2019-6-152-73-78.
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A universal, multifunctional system of environmental diagnostics of heat engines and boiler plants has been created, which allows one to determine indicators characterizing the chemical and physical effect of these objects on the environment: concentrations, mass, specific and average operational emissions of pollutants, noise, thermal pollution, vibration. This measuring system consists of instrumental, testing, demonstration and laboratory modules, which allows you to use it as a diagnostic tool, training and test bench and laboratory; as well as apply it in various fields: transport, energy, environmental and educational fields. The diagnostic system implements methods for monitoring and improving the accuracy of measurements of average operating emissions of pollutants: method for determining the resulting measurement errors of the average operational emissions of gaseous pollutants and particulate matter – GAS and РT indicators, which allows you to evaluate the impact on the data of the value of the errors of the measuring equipment of the diagnostic system; a method for increasing the accuracy of measurements of the normalized РT index by taking into account the methodological error of measurements of a given value due to the influence of the temperature of the sample in the tunnel on the measured emission of particulate matter - δРТt. Experimental studies of the diagnostic system and methods for increasing its accuracyon full-scale objects were carried out: diesel engines: tractor 4CHN12/14 tractor D65M, diesel locomotive diesel engine DEL-01 and boiler units: gas - DKVR-20/13 and AOGV-100E, solid fuel - KCHM-2M-4. Transport diesels were tested according to the cycles established by the UNECE Regulations R-49, R-96 and the international standard ISO-8178. As a result of tests of these engines, the coefficients KРi, KMgasi and KMрmi were determined, which are used to assess the accuracy of measurements of GAS and РT indicators, the resulting measurement errors of these values were investigated and the range of variation of the methodical error δРТt was determined.
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Prasetyo, Andi, and Arif Surono. "Studi Eksperimental Pergerakan Temperatur Radiator Terhadap Putaran Mesin (RPM) dengan Kecepatan Kipas Constant." Creative Research in Engineering 1, no. 1 (2021): 33. http://dx.doi.org/10.30595/cerie.v1i1.9478.
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The research aims to evaluate the engine rotation (rpm) against changes in radiator temperature. Radiator used is compact heat exchanger tube and fins type. The study was conducted using an experimental method on a BMW E.36 car with a stop state. The research scheme we use consists of radiator water reservoir tanks, water pumps, and radiators. Measuring instruments used are anemometer, thermocople, stopwatch and reader. Data retrieval is carried out at the radiator entrance temperature, radiator exit temperature and the temperature on the radiator wall that hits the fan. In this study we did variations of engine rotation (rpm) of 1000, 1500, 2000, 2500 and 3000 rpm. The results showed that in the use of fans at a speed of 6.5 m / s able to throw heat into the environment well, this proved to be obtained the highest temperature value at the 10th minute of 57.5 oC at a fan speed of 3.5 m / s. Meanwhile, in the 10th minute the lowest temperature was obtained from a speed of 6.5 m/s of 40 oC.
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Диасамидзе Мзия Ресановна, Телия Тамаз Николаевич та Моцкобили Ия Ревазовна. "МЕЖПРЕДМЕТНАЯ СВЯЗЬ – КАК ПУТЬ ПОВЫШЕНИЕ ЭФФЕКТИВНОСТИ ОБУЧЕНИЯ В ПРОЦЕССЕ ПРЕПОДАВАНИЯ КУРСОВ „ОБЩЕЙ ФИЗИКИ И МАТЕМАТИКИ“ В БГМА С ПРИМЕНЕНИЕМ КОМПЬЮТЕРНЫХ ТЕХНОЛОГИЙ". International Academy Journal Web of Scholar, № 5(47) (31 травня 2020): 33–37. http://dx.doi.org/10.31435/rsglobal_wos/31052020/7092.
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The article analyzes the influence of the relationship of basic subjects with general technical subjects in the learning process for students of marine specialties. It is possible to realize this connection by developing and implementing engineering problems that a student at the BSMA will have to face both in primary courses and in the study of special subjects. Our early research results indicate the effectiveness of the use of such a teaching method as a means of developing students' thinking. Our institution is a specific technical university. Graduates have to work in extremely dangerous situations at sea, and they have to decide the fate of passengers, ship and cargo in a matter of minutes. Therefore, special thinking is an essential feature of a sailor. While studying, along with other subjects, students study various marine equipment, conduct observations of measuring instruments (for example, temperature in the engine room, in turbine pumps, etc.). The article considers the engineering problem - determining the value of the linear temperature coefficient of a thermistor in Excel. Based on the basic data, a graph of the dependence of temperature on resistance is constructed, a linear temperature coefficient and the reliability of the approximation value are determined. It is established whether the device used is laboratory. The corresponding conclusions are made.
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Ma, Nan-qi, Hua Su, and Jun Liu. "An intelligent instrument for measuring exhaust temperature of marine engine." Journal of Marine Science and Application 5, no. 4 (2006): 27–32. http://dx.doi.org/10.1007/s11804-006-6029-6.
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Məhəmməd oğlu Rəhimov, Rəhim, and Ceyhun Telman oğlu Abdullayev. "Temperature measuring instruments on microcontrollers." SCIENTIFIC WORK 66, no. 05 (2021): 19–22. http://dx.doi.org/10.36719/2663-4619/66/19-22.
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Modern temperature measuring instruments are implemented on microcontrollers. In this case, the thermometer is used not only to measure the room temperature, but also to measure and regulate the temperature of water in incubators, refrigerators, aquariums, etc. Can be applied in places. Temperature measurement schemes are also built on modern chips and microcontrollers. Because these circuits have digital output, the measurement error is reduced. Here, the value of the sampling period is 2 seconds. Among these devices, we can also show an analog-to-digital converter with high traction capacity, which, when used in conjunction with a computer, has a sampling time of 30 ms. RT-type regulators are used to regulate the temperature in water and steam water heaters and refrigerators. Key words: temperature transmitter, microcontroller, temperature measurement, voltage converter, seven-segment indicator