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OPTIMAL FUEL-CUT DRIVING METHOD FOR BETTER FUEL ECONOMY

刊名：	International Journal of Automotive Technology
作者：	S. C. CHOI（Department of Automotive Engineering, Ajou Motor College） K. H. KO（Department of Automotive Engineering, Ajou Motor College） I. S. JEUNG（School of Mechanics and Aerospace Engineering, Seoul National University）
刊号：	873GA001
ISSN：	1229-9138
出版年：	2013
年卷期：	2013, vol.14, no.2
页码：	183-187
总页数：	5
分类号：	U46
关键词：	Fuel-cut；CO_2 emissions；Fuel consumption；Eco-drive
参考中译：
语种：	eng
文摘：	Eco-drive methods are being applied in modern passenger cars in the form of LCD displays showing real-time fuel consumption rates. The eco-drive is one of the most promising methods to enhance the fuel economy of vehicles. The eco-drive method can be made more effective by using the fuel-cut function. The fuel is not injected when the driver does not depress the gas pedal of a vehicle with engine speeds higher than approximately 1,500 rpm above the mid-vehicle speed range. This function is known as the fuel-cut function, and almost every modern vehicle is equipped with this function. The fuel-cut is most frequently activated on downhill sections of highway. Therefore, the CO_2 exhausted from the vehicle can be zero in this downhill section. In this study, the fuel-cut function is simulated with CRUISE of AVL to find the most effective driving pattern in downhill sections. Simulations with the CRUISE software showed that the lower limit of the vehicle speed for fuel-cut should be raised to improve fuel economy on steeper downhill sections. The fuel economy can be optimized when the fuel-cut coasting and reacceleration is completed in the downhill part of the road. The simulation result was also compared to previous test results. Fuel consumption was reduced by approximately 4% in both the experimental and simulated results for the West Coast Highway in South Korea.