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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2010, Vol. 11 Issue (2): 106-114    DOI: 10.1631/jzus.A0900119
Mechanical Engineering     
Effect of a semi electro-mechanical engine valve on performance and emissions in a single cylinder spark ignited engine
Bülent ÖZDALYAN, Oğuzhan DOĞAN
Department of Automotive Education, Karabuk University, Karabuk 78050, Turkey
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Abstract  In this study, an electro-mechanical valve (EMV) system for the intake valve of a four stroke, single cylinder, overhead valve and spark ignition (SI) engine was designed and constructed. An engine with the EMV system and a standard engine were tested to observe the effects of the EMV on engine performance and emissions at different speeds under full load. The EMV engine showed improved engine power, engine torque and break specific fuel consumption (BSFC). A 66% decrease in CO emissions was also obtained with the EMV system, but hydrocarbons (HC) and NOx emissions increased by 12% and 13% respectively.

Key words： Semi electro-mechanic      Camless engine      Electro-mechanic engine valve      Engine performance      Emissions     
Received: 25 February 2009      Published: 01 January 2010
CLC:  TH13  
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Bülent ÖZDALYAN
Oğuzhan DOĞAN
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Bülent ÖZDALYAN, Oğuzhan DOĞAN. Effect of a semi electro-mechanical engine valve on performance and emissions in a single cylinder spark ignited engine. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2010, 11(2): 106-114.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.A0900119     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2010/V11/I2/106

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