Variable valve timing technologies for internal combustion engines are used to improve power, torque, reduce emissions and increase fuel efficiency. Firstly, the paper presents a new electrohydraulic FVVA system which can control the seating velocity of engine valve flexibly. Secondly, based on the NSGA-II genetic algorithm, outlines multi-objective optimization strategy, the paper designs the parameters of FVVA system to make the system easier to implement. Thirdly, the paper builds the combined FVVA engine simulation model. The combined simulation and experimental are executed to validate the designed FVVA engine. Simulation results show brake power is improved between 1.31% and 4.48% and torque is improved by 1.32% to 4.47%. Brake thermal efficiency and volumetric efficiency also show improvement. Experimental results have good agreement with simulation results. The research results can provide a basis for engine modification design.
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ASME 2018 Internal Combustion Engine Division Fall Technical Conference
November 4–7, 2018
San Diego, California, USA
Conference Sponsors:
- Internal Combustion Engine Division
ISBN:
978-0-7918-5199-9
PROCEEDINGS PAPER
Simulation and Experimental Study of a Diesel Engine Based on an Electro-Hydraulic FVVA System
Yong Lu,
Yong Lu
Harbin Engineering University, Harbin, China
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Jian Li,
Jian Li
Harbin Engineering University, Harbin, China
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Lijun Xiong,
Lijun Xiong
Harbin Engineering University, Harbin, China
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Bo Li
Bo Li
Harbin Engineering University, Harbin, China
Search for other works by this author on:
Yong Lu
Harbin Engineering University, Harbin, China
Jian Li
Harbin Engineering University, Harbin, China
Lijun Xiong
Harbin Engineering University, Harbin, China
Bo Li
Harbin Engineering University, Harbin, China
Paper No:
ICEF2018-9541, V002T07A003; 10 pages
Published Online:
January 3, 2019
Citation
Lu, Y, Li, J, Xiong, L, & Li, B. "Simulation and Experimental Study of a Diesel Engine Based on an Electro-Hydraulic FVVA System." Proceedings of the ASME 2018 Internal Combustion Engine Division Fall Technical Conference. Volume 2: Emissions Control Systems; Instrumentation, Controls, and Hybrids; Numerical Simulation; Engine Design and Mechanical Development. San Diego, California, USA. November 4–7, 2018. V002T07A003. ASME. https://doi.org/10.1115/ICEF2018-9541
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