SI 단기통기관에서 PDA 밸브에 의한 배기 성능 특성에 관한 연구

Recently, our planet faced with very serious problems related to the air pollution and to the lack of energy resources. So, lots of researchers have studied to reduce the exhaust emission of Automobile that influenced the environment strong. Therefore. this paper was studied characteristics of emission performance by variation combustion chamber and PDA valve in single spark ignition engine. These studies in a spark ignition engine is one of the best solution for improvement of fuel economy and reduction of emission level. Two combustion chamber which have slightly different shaper in order to apply on SI single engine to improve combustion and to reduce emission gas. And PDA valve has been used to satisfy the requirements of sufficient swirl generation to improve combustion and performance to effect on flow profile on a combustion chamber. It is forced that injection timing, spark timing and intake air motion govern the stable combustion. Using the results of the test, the effects of the variable combustion chamber and PDA can be improved fuel consumption and be reduced exhaust emission.