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2005•The proceedings of the JSME annual meetingOpen access

3107 Development of Hydraulic Variable Valve Timing System : Second Report: Applications to Combustion Control of HCCI Engine

Masanori Atarashi, Yoichi Sugihara, Mitsuru Konno, Yohji OKADA, Zhili Chen

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Abstract

Energy accumulated type variable valve timing (EAVVT) system; a new type of hydraulic valve timing system has been developed. In our study, EAVVT system was applied to a single cylinder diesel engine as a control device for homogeneous charge compression ignition (HCCI) combustion. Also, advantages of this system in HCCI combustion control were analized by numerical calculation with an elementary chemical reaction model. As a result, ignition timing was continuously controled by changing intake valve close timing.

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Energy accumulated type variable valve timing (EAVVT) system; a new type of hydraulic valve timing system has been developed. In our study, EAVVT system was applied to a single cylinder diesel engine as a control device for homogeneous charge compression ignition (HCCI) combustion. Also, advantages of this system in HCCI combustion control were analized by numerical calculation with an elementary chemical reaction model. As a result, ignition timing was continuously controled by changing intake valve close timing.

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Available abstract

Energy accumulated type variable valve timing (EAVVT) system; a new type of hydraulic valve timing system has been developed. In our study, EAVVT system was applied to a single cylinder diesel engine as a control device for homogeneous charge compression ignition (HCCI) combustion. Also, advantages of this system in HCCI combustion control were analized by numerical calculation with an elementary chemical reaction model. As a result, ignition timing was continuously controled by changing intake valve close timing.

Key concepts: Homogeneous charge compression ignition, Valve timing, Automotive engineering, Ignition system, Combustion, Diesel engine, Control valves, Hydraulic machinery

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