Low-speed performance compensation of a turbocharged natural gas engine by intake strategy optimization

Luo, Kun; Huang, Yunxin; Han, Zhiyu; Li, Yaoting; Shi, Yongliang; Liu, Wei; Tang, Chenglong

doi:10.1016/j.fuel.2022.124748

Cited by 11 publications

(4 citation statements)

References 21 publications

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“…They showed that the hybrid turbocharger had improved engine characteristics at different engine loads and speeds compared to the original engine. Luo et al [30] investigated the compensation of low-speed performance of natural gas turbocharged engines based on the optimisation of the intake strategy, and obtained the conclusion that the use of a turbocharger can increase the efficiency of the engine by an average of 3.6%.…”

Section: Introductionmentioning

confidence: 99%

Pre-matching study of the natural gas engine turbocharging system based on the coupling of experiments and numerical simulation

Zhou,

Meng,

Xiao

et al. 2024

Mechanics & Industry

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In this study, a pre-matching method was developed based on measured performance parameters and theoretical calculations of turbochargers. First, the turbocharger of a natural gas engine was subjected to a comprehensive performance experiment. According to the experimental results, the maximum efficiencies of the turbine and compressor are 70% and 75%, respectively, and the efficiency of the turbine drops sharply from 70% to 56.6% as the pressure ratio increases from 1.25 to 2.4. In this thesis, a specific turbocharger pre-matching software has been developed in conjunction with a database. Three turbines and three compressors were selected from the self-developed database for matching and comparative study using this method. The simulation results showed that the maximum efficiency of turbine #1, #2 and #3 is 71.3%, 72.2% and 72.7%, respectively, and the efficiency of these three turbines is concentrated between 65% and 72.5%. Obviously, the maximum efficiency of the turbine has increased by 1.3–2.7% and the overall efficiency has improved after the pre-matching. Therefore, this developed pre-matching method can reduce time cost, improve work efficiency and engine performance, and is important for the design and development of turbochargers.

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Section: Introductionmentioning

confidence: 99%

Pre-matching study of the natural gas engine turbocharging system based on the coupling of experiments and numerical simulation

Zhou,

Meng,

Xiao

et al. 2024

Mechanics & Industry

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“…The subsystems include the intake system, with variables such as the intake port, intake valve, and intake manifold, which are critical even in the intake phase. During compression, heat is transferred from the cylinder walls to the combustion gas [ [8] , [9] , [10] ]. At the point of combustion, the gas temperature rises significantly and expands, increasing its velocity and decreasing its temperature.…”

Section: Introductionmentioning

confidence: 99%

Dataset of the effect of the number of injector holes on the heat transfer coefficient and the pressure in the combustion chamber of a hydrogen-diesel engine

Zareei,

Nuñez Alvarez

2024

Data in Brief

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“…There are also a large number of various design solutions within the framework of the second research area (relating to the improvement of gas exchange systems for piston engines) [19][20][21][22][23][24]. So, Wang T. et al, developed a special controlled valve for the intake system, with which it was possible to change the gas-dynamic behaviour of the flows in the engine cylinder [19].…”

Section: Introductionmentioning

confidence: 99%

“…Shah S.S. et al, finetuned the geometric dimensions (diameter and length) of a gasoline engine in order to obtain maximum power [20]. Similar issues were addressed in [21]. It was established that the optimisation of the intake system's configuration leads to an increase in torque of up to 41% and a simultaneous decrease in specific fuel consumption within 8% for a crankshaft speed of 1200 rpm.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Analysis of Experimental Findings on the Thermal and Mechanical Characteristics of Pulsating Gas Flows in the Intake System of a Piston Engine for Modelling and Machine Learning

Plotnikov

2023

Mathematics

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Today, reciprocating internal combustion engines are used in many branches of the economy (power engineering, machine engineering, transportation, and others). In order for piston engines to meet stringent environmental and economic regulations, it is necessary to develop complex and accurate control systems for the physical processes in engine elements based on digital twins, machine learning, and artificial intelligence algorithms. This article is aimed at preparing and analysing experimental data on the gas dynamics and heat transfer of pulsating air flows in a piston engine’s intake system for modelling and machine learning. The key studies were carried out on a full-scale model of a single-cylinder piston engine under dynamic conditions. Some experimental findings on the gas-dynamic and heat-exchange characteristics of the flows were obtained with the thermal anemometry method and a corresponding measuring system. The effects of the inlet channel diameter on the air flow, the intensity of turbulence, and the heat transfer coefficient of pulsating air flows in a piston engine’s inlet system are shown. A mathematical description of the dependences of the turbulence intensity, heat transfer coefficient, and Nusselt number on operation factors (crankshaft speed, air flow velocity, Reynolds number) and the inlet channel’s geometric dimensions are proposed. Based on the mathematical modelling of the thermodynamic cycle, the operational and environmental performance of a piston engine with intake systems containing channels with different diameters were assessed. The presented data could be useful for refining engineering calculations and mathematical models, as well as for developing digital twins and engine control systems.

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Low-speed performance compensation of a turbocharged natural gas engine by intake strategy optimization

Cited by 11 publications

References 21 publications

Pre-matching study of the natural gas engine turbocharging system based on the coupling of experiments and numerical simulation

Pre-matching study of the natural gas engine turbocharging system based on the coupling of experiments and numerical simulation

Dataset of the effect of the number of injector holes on the heat transfer coefficient and the pressure in the combustion chamber of a hydrogen-diesel engine

Preparation and Analysis of Experimental Findings on the Thermal and Mechanical Characteristics of Pulsating Gas Flows in the Intake System of a Piston Engine for Modelling and Machine Learning

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