오토저널 (Journal of the korean Society of Automotive Engineers)
- 제15권1호
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- Pages.67-72
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- 1993
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- 1739-4791(pISSN)
Injector에 따른 가.감속시 공연비 변동에 관하여
Effects of injector on the A/F variations during acceleration and deceleration
초록
Wall wetting phenomenon in the intake port of an MPI engine was investigated with different kinds of injectors by an A/F step response test and analysis was done based on the simple wall wetting model to find out a certain correlation between wall wetting and A/F variations. It was found that (1) At fully warmed condition of 90.deg.C water temperature, around 40-60% of injected fuel was wall wetted, (2) At cold condition of 45.deg.C Water temperature, around 68-80% of injected fuel was wall wetted, and (3) A/F variations during acceleration and deceleration were influenced by the wetting area, the fuel droplet size, and the amount of wall wetting fuel.