Experimental Study on the Start Process for Compressed Natural Gas Engine

Abstract:

In this paper electronic control unit (ECU) used in vehicle-used compressed natural gas engine is developed independently. A series of start experiments are done with refitted JL465Q5 engine. Experimental monitoring system is developed as an interface connecting staff and single chip. Speed acquisition system is developed to record start process accurately in real time. The test results indicate that, more concentrated mixture is necessary when start speed is lower. Higher engine coolant temperature is conductive to cold start for natural gas engine. Multiple ignition control and ignition energy improvement is conductive to start successfully for natural gas engine. The results showed that electronic control unit (ECU) and speed acquisition system developed independently is practical and feasible.

• Periodical: Advanced Materials Research (Volumes 383-390)
• Pages: 6128-6133
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.383-390.6128
• Online since: November 2011
• Authors: Yi Zheng, Shi Xi Yang, Yi Zheng, Hong Guang Zhang
• Keywords: Natural Gas Engine, Start, Step Motor

References

[1] Wang Shaoguang, Xia Qunsheng, Li Jianqiu. Automotive Eectronics. Beijing: Tsinghua University Press, 2005. 8.

[2] Zhou Longbao. Internal combustion engine (Second Edition). Beijing: CHINA MACHINE PRESS, 2005. 1.

[3] Yu Xiumin, Tang Rui, Yang Shichun, Liu Le. Experimental Study on Cold Start Characteristics of Gasoline Engine and LPG Engine. Transactions of the Chinese Society for Agricultural Machinery. 2007. 4: 4-7.

[4] Gao Yuan. Study on Control Strategy during Cold Start in Jetta CNG Spark Ignition Engine. 2006. 4.

[5] Wang Zhensuo, Li Liguang, Gong Changming, Xiao Zongcheng, Wang Huiping, Deng Baoqing. Investigation of Cold-Start Based on Cycle-by-Cycle Control Strategy in a LPG EFI Engine. Transactions of Csice. 2004, 22(4): 337-343.

DOI: 10.4271/2004-01-3059

[6] Zheng Guoyong, Zhang Hongguang, Liu Kai, Zheng Yi, Wang Daojing, Gong Weidong, Wu Di. Development of Monitoring System for CNG Vehicle Engines. Small Internal Combustion Engine and Motorcycle. 2008. 3: 1-3.

[7] Zhang Hongguang, Zheng Yi, Liu Kai, Wang Daojing, TIAN Xiaofei, BAI Mingrui, HAN Xuejiao. Experimental Study on Starting Process of Automotive Natural Gas Engine. Internal Combustion Engine(CSICE). 2010. 3: 29-33.

[8] Zheng Yi, Zhang Hongguang, Liu Kai, Wang Daojing, WEN Liang, WU Di, WANG Dian. Study on the idle speed closed-loop control for vehicle-used natural gas engine. Small Internal Combustion Engine and Motorcycle. 2009. 4: 1-4.