Specific aspects of the thermal and mechanic characteristics of pulsating gas flows in the intake system of a piston engine with a turbocharger system

Plotnikov, L. V.; Жилкин, Б. П.

doi:10.1016/j.applthermaleng.2019.114123

Cited by 22 publications

(8 citation statements)

References 31 publications

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“…The proposed method has been successfully applied to the analysis of thermomechanical processes in gas-dynamic systems typical of piston engines. [27,28].…”

Section: An Indirect Methods For Determining the Local Heat Transfer Coefficient Of Gas Flows In Pipelinesmentioning

confidence: 99%

Thermal-mechanical characteristics of stationary and pulsating gas-flows in a gas-dynamic system: In relation the exhaust system of an engine

Plotnikov

2022

Therm sci

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It is a relevant objective in thermal physics and in building reciprocating internal combustion engines (RICE) to obtain new information about the thermal-mechanical characteristics of both stationary and pulsating gas flows in a complex gas-dynamic system. The article discusses the physical features of the gas dynamics and heat transfer of flows along the length of a gas-dynamic system typical for RICE exhaust systems. Both an experimental set-up and experimental techniques are described. An indirect method for determining the local heat transfer coefficient of gas flows in pipelines with a constant temperature hot-wire anemometer is proposed. The regularities of changes in the instantaneous values of the flow rate and the local heat transfer coefficient in time for stationary and pulsating gas flows in different elements of the gas-dynamic system are obtained. The regularities of the change in the turbulence number of stationary and pulsating gas flows along the length of RICE gas-dynamic systems are established (it is shown that the turbulence number for a pulsating gas flow is 1.3-2.1 times higher than for a stationary flow). The regularities of changes in the heat transfer coefficient along the length of the engine?s gas-dynamic system for stationary and pulsating gas flows were identified (it was established that the heat transfer coefficient for a stationary flow is 1.05-1.4 times higher than for a pulsating flow). Empirical equations are obtained to determine the turbulence number and heat transfer coefficient along the length of the gas-dynamic system.

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“…The proposed method has been successfully applied to the analysis of thermomechanical processes in gas-dynamic systems typical of piston engines. [27,28].…”

Section: An Indirect Methods For Determining the Local Heat Transfer Coefficient Of Gas Flows In Pipelinesmentioning

confidence: 99%

Thermal-mechanical characteristics of stationary and pulsating gas-flows in a gas-dynamic system: In relation the exhaust system of an engine

Plotnikov

2022

Therm sci

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“…In [9] a performance analysis of a turbocharged twostroke diesel engine, operating at various ambient conditions has been presented. The research [10] is focuses on determination of some heat transfer parameters of processes in the intake system of a piston engine with a turbocharger system. Numerical investigation of combustion processes in a turbocharged diesel engine has been considered in [11].…”

Section: Introductionmentioning

confidence: 99%

Electronic system for control of temperature of exhaust gases and pressure in turbochargers of diesel automobile engines

2021

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The paper presents design and experimental investigation of an electronic system for control of the temperature of exhaust gases and the turbocharging air pressure in turbochargers of diesel automobile engines. The existing problems are faults in the fuel system of an engine. The indicators are changes in the values of the temperature and pressure in exact areas of the turbocharger. The presented device is a controller that monitors precisely the temperature and pressure, which are so vital for the long operation of the automobile. The control system is based on Arduino microcontroller. OLED Display has been added to visualize the obtained results. A schematic diagram of an electronic module for control of the temperature of exhaust gases and turbocharging air pressure in turbochargers of diesel automobile engines has been synthesized. The system has been investigated in laboratory conditions and practically implemented in a real automobile. As a result of laboratory experimental investigation, results were obtained for the time-monitored parameters temperature of the exhaust gases and turbocharging air pressure in the turbocharger system of a diesel automobile engine.

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“…Intake manifolds (IM) of internal combustion engines (ICE) have a great importance in determining the engines efficiency; hence, the optimization of this system is indispensable to attain greatest engine performances. 1 Generally, the design of the IM involves multifaceted methods of synthesis which are habitually based on engine test bench experiments 2 and numerical investigations. 3 The optimization of the IM results in an engine supercharging without any additional system, named natural, acoustic or dynamic supercharging.…”

Section: Introductionmentioning

confidence: 99%

Variable intake manifold geometry influence on volumetric efficiency enhancement at gaseous engine starting speeds

Jemni

Hadjkacem

Ammar

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part E:

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This paper studied the effect of variable intake length manifold on filling and volumetric efficiency at starting engine speeds using numerical and experimental process. The investigation is based on acoustic supercharging phenomenon. For this purpose, 1-D engine gas-flow model was developed and optimum intake lengths for several low engine speeds were determined using acoustic theory based-resolution. Using the method of characteristics, pressure waves were predicted at the end of intake line length (intake valve level) in order to test the dynamic inertial supercharging phenomena. The quarter-wave resonator technique was taken into consideration to explore the inlet pressure pulsations. Simulations of pressure wave propagation were achieved during intake stroke and intake valve closed phase. Simulation predictions confirmed the analytically calculated optimum intake length. Numerical investigations were carried out on five in-cylinder flow moving through intake system; air, air-gasoline, air-LPG, air-H2 and air-LPG-H2 blend. The percentages of supplied hydrogen with LPG were 0%, 5%, 10%, 15% and 20% in volume. To experimentally validate the analytical founded lengths, an instrumented cold-flow four cylinder Ford SI engine test bench was prepared. Flow through variable intake length manifold was analyzed. Geometry variation was performed on the plenum length. Three engine low speeds are tested; 500 rpm, 750 rpm and 1000 rpm. The experiment results showed an in-cylinder velocity increase by about 60%, 58% and 48% using the optimal intake length at 500 rpm, 750 rpm and 1000 rpm respectively. Furthermore, the collected data proves that varying intake pipe length continuously with the engine speed leads to an average of 39.7% improvement in volumetric efficiency from the original engine configuration at 1000 rpm.

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Specific aspects of the thermal and mechanic characteristics of pulsating gas flows in the intake system of a piston engine with a turbocharger system

Cited by 22 publications

References 31 publications

Thermal-mechanical characteristics of stationary and pulsating gas-flows in a gas-dynamic system: In relation the exhaust system of an engine

Thermal-mechanical characteristics of stationary and pulsating gas-flows in a gas-dynamic system: In relation the exhaust system of an engine

Electronic system for control of temperature of exhaust gases and pressure in turbochargers of diesel automobile engines

Variable intake manifold geometry influence on volumetric efficiency enhancement at gaseous engine starting speeds

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