Aiming at the starting difficulty of M100 methanol engine due to the difficulty of forming a sufficiently concentrated combustible mixture at low temperature,research was carried out to improve the atomization of M100 methanol fuel and to in-crease the temperature of mixture.The air-assisted injector was used to reduce the spray particle size of methanol fuel to pro-mote the formation of the combustible mixture and the intake heating method was used to heat the methanol mixture entering the cylinder during the starting phase to increase the evaporation rate of methanol and accelerate the concentration of methanol mixture to reach the ignition limit at low temperature.The test results show that the air-assisted injector is beneficial to im-prove the starting performance of M100 methanol fuel engine,and the limit starting temperature is 10℃ lower than that of or-dinary methanol injector.Intake heating can accelerate the formation of methanol mixture.The combination of the two schemes can realize the in-cylinder ignition at the ambient temperature of 5℃.
关键词
甲醇发动机/冷起动/混合气形成/进气温度
Key words
methanol engine/cold start/mixture formation/intake temperature
维普
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