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WONG Pak-kin
TAM Lap-mou
LI Ke
Department of Electromechanical
Engineering,
Faculty of Science and Technology,
University of Macau,
Macau, China |
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DYNAMIC MODEL AND SIMULATION
OF A NOVEL ELECTRO-HYDRAULIC
FULLY VARIABLE VALVE SYSTEM FOR
FOUR-STROKE AUTOMOTIVE ENGINES
Abstract:
In modern four-stroke engine technology, variable valve timing and lift control offers potential benefits for making a high-performance engine. A novel electro-hydraulic fully variable valve train for four-stroke automotive engines is introduced. The construction of the nonlinear mathematic model of the valve train system and its dynamic analysis are also presented. Experimental and simulation results show that the novel electro-hydraulic valve train can achieve fully variable valve timing and lift control. Consequently the engine performance on different loads and speeds will be significantly increased. The technology also permits the elimination of the traditional throttle valve in the gasoline engines and increases engine design flexibility.
Key words:
Fully variable engine valve train Dynamic model Simulation |