Effect of Excess Air Ratio and Ignition Timing on Performance of M100 Methanol Engine
WANG Yan-peng1，WANG Zhong1，ZHANG Deng-pan1，JU Yu-sheng2，ZHANG Yong-ming2
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（1.School of Automotive and Traffic Engineering，Jiangsu University，Zhenjiang 212013，Jiangsu，China；2. Wuxi Fuel Injection Equipment Research Institute，China FAW Group Corporation，Wuxi 214063，Jiangsu，China）
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.
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. Acta Armamentarii. 2015, 36(12): 2358-2362 https://doi.org/10.3969/j.issn.1000-1093.2015.12.020
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