Abstract
The variation of spark plug location have one of the effects on combustion characteristics. Several parameters of the effect on combustion characteristics are shape of combustion chamber, the spark plug position, turbulence flow and so on This paper presents an experimental study according to variation of spark plug protrusion and PDA valve which have effects on characteristics of combustion and emission in single cylinder gasoline engine Also, this paper emphasized that combustion stabilization was making by way of the reinforcement of the turbulent flow with the PDA valve. A feasibility and necessity of combustion pressure based cylinder spark timing control according to spark plug protrusion has been examined So, this was obtained COVmep and the mass fraction burned(MFB) and the specific fuel consumption(sfc) Using the results of the test, the effects of the variable spark plug location and PDA valve can be Improved fuel consumption and be available for the combustion stability.
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