| 제목 |
기체연료 엔진에서 공연비제어를 위한 흡입공기량 추정 |
| 분야 |
엔진 및 연소 |
| 언어 |
Korean |
| 저자 |
선우명호(한양대학교), 이강윤(한양대학교), 송창섭(한양대학교), 심한섭(한양대학교) |
| Key Words |
Gaseous-fuel engine(기체연료엔진), CNG(Compressed natural gas), LOG(Liquified petroleum gas), Air partial pressure ratio(공기분압비), Effective air mass ratio(유효공기질량비), Air mass flow model(공기량 모델), Estimation of inlet ai |
| 초록 |
Highly accurate control of the air-fuel ratio is important to reduce exhaust gas emissions of the gaseous- fuel engines. In order to achieve this purpose, inlet air mass flow must be measured exactly, and precise engine models are necessary to design engine control systems. In this paper, the effects of water vapor and gaseous fuel that change the air mass flow are studied. The effective air mass ratio is defined as the air mass flow divided by the mixture mass flow, and also it is applied to the estimation of the inlet air mass flow, The presence of the gaseous fuel and the water vapor in the mixture reduces the air partial pressure and the effective air mass ratio of the gaseous-fuel engines. The Experimental results for an LPG engine show that the estimation of the inlet air mass flow based upon the effective air mass ratio is more accurate than that of the normal air mass flow. |
| 원문(PDF) |
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