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AssigneeNissan Motor Co., Ltd.
InventorsShusaka Katakura, Masayuki Yasuoka, Nobusuke Toukura, Shojiro Sato, Yoshinori Iwasaki, Katsuhiko Tsuchiya, Hideaki Watanabe
Estimating the term…
In a vehicle equipped with a continuously variable transmission, sensors detect a vehicle speed, an accelerator depression degree and an output rotation speed of the transmission. The minimum required drive shaft drive torque is calculated from the vehicle speed and the accelerator depression degree. A target input rotation speed of the transmission for achieving the minimum required drive shaft drive torque with the least engine fuel consumption is calculated according to the vehicle speed. The input rotation speed is controlled to this target input rotation speed. The target engine output torque to generate the minimum required drive shaft drive torque is calculated, and an engine throttle opening is controlled to obtain this torque. As a result, the required vehicle drive force is obtained with the minimum engine fuel consumption.
A drive force control device for use with a vehicle, said vehicle being provided with an accelerator pedal, an engine comprising a throttle which responds to the accelerator pedal, a drive shaft and a continuously variable transmission which varies a rotation speed of said engine at an arbitrary drive ratio, said transmission having an input shaft joined to said engine and an output shaft joined to said drive shaft, said device comprising:
A drive force control device for use with a vehicle, said vehicle being provided with an accelerator pedal, an engine comprising a throttle which responds to the accelerator pedal, a drive shaft and a continuously variable transmission which varies a rotation speed of said engine at an arbitrary drive ratio, said transmission having an input shaft joined to said engine and an output shaft joined to said drive shaft, said device comprising:
Dependencies are inferred from the claim text.