Patent ID: 7996139
Filing Date: 2011-08-09
Classification: B60K,B60L,B60W,F02D,Y02T,Y10T

Abstract:
1. A motor vehicle, comprising: an internal combustion engine that has an output shaft and is capable of outputting a driving force for driving said motor vehicle; a driving force transmission mechanism that is linked to the output shaft of the internal combustion engine and to an axle and, in at least a predetermined low vehicle speed range, transmits a driving force corresponding to a rotation speed of the internal combustion engine to the axle; a driving force demand detection unit that detects a driving force demand corresponding to a driver's operation; a road gradient detection unit that detects a road gradient; a vehicle speed measurement unit that measures a vehicle speed; and a low-speed drive control module that, when the measured vehicle speed is not higher than a preset reference vehicle speed included in the predetermined low vehicle speed range and when the detected road gradient is not less than a preset reference gradient, sets a target rotation speed of the internal combustion engine corresponding to a driving force required for constant-speed driving on the detected road gradient at a target vehicle speed, which is set to be not higher than the preset reference vehicle speed, and sets a target throttle opening for driving the internal combustion engine at the set target rotation speed, when a required throttle opening corresponding to the detected driving force demand is not less than the target throttle opening, said low-speed drive control module controlling operation of the internal combustion engine with the required throttle opening, when the required throttle opening is less than the target throttle opening, said low-speed drive control module controlling the operation of the internal combustion engine with the target throttle opening.