Effect of Excess Air Ratio and Ignition Timing on Performance of M100 Methanol Engine

doi:10.3969/j.issn.1000-1093.2015.12.020

Abstract

Abstract: The effects of excess air ratio and ignition timing on engine torque and break specific fuel consumption of a methanol engine transformed from a gasoline engine are studied, and the performance of M100 methanol engine is experimentally investigated. Results show that the engine torque increases with the increase in advanced ignition angle for a specified excess air ratio at 2 500 r/min, and the NO emission is increased by 80% when the fuel consumption decreases. When the excess air ratio decreases at a specified ignition time，the engine torque increases, and HC and CO emissions are significantly increased. The maximum torque is increased by 5.2% higher than that of original gasoline engine, and the brake specific fuel consumption is lower at speed of 2 000 r/min.

Key words: power machinery engineering, methanol, advanced ignition angle, excess air ratio

CLC Number:

TK46⁺4

WANG Yan-peng，WANG Zhong，ZHANG Deng-pan，JU Yu-sheng，ZHANG Yong-ming. Effect of Excess Air Ratio and Ignition Timing on Performance of M100 Methanol Engine[J]. Acta Armamentarii, 2015, 36(12): 2358-2362.

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