Patent ID: 6575870
Filing Date: 2003-06-10
Classification: B60K,B60L,B60T,B60W,Y02T,Y10S,Y10T

Abstract:
A driving force control system for a front-and-rear wheel drive vehicle that is driven while switching between a drive mode for driving first drive wheels as one pair of respective pairs of front drive wheels and rear drive wheels by a first prime mover and driving second drive wheels as another pair of the respective pairs by a second prime mover, and a recharge mode for recovering running energy of the vehicle to thereby charge a drive source of the second prime mover with the running energy recovered as driving energy,the driving force control system comprising: parameter detecting means for detecting a parameter indicative of a driving condition of the vehicle; traveling condition-determining means for determining a traveling condition of the vehicle based on the parameter; driving energy charge execution-determining means for determining, based on the traveling condition of the vehicle and a state of charge of the driving energy in the drive source, whether or not charging of the drive source with the driving energy is to be executed; and energy charge-executing means for executing the charging of the drive source with the driving energy, wherein said parameter detecting means includes accelerator pedal opening-detecting means for detecting an accelerator pedal opening, and vehicle speed-detecting means for detecting a vehicle speed, and wherein aid traveling condition-determining means includes desired driving force-calculating means for calculating a desired driving force based on the detected accelerator pedal opening and the detected vehicle speed, reference driving force-storing means for storing a reference driving force which is set, based on a driving force of the vehicle required for cruising, to a larger value than the desired driving force, and driving force comparison means for performing a comparison between the desired driving force and the reference driving force, and wherein the driving energy charge execution-determining means includes driving energy charge-permitting means for permitting the charging of the drive source with the driving energy when the driving force comparison means determines that the desired driving force is smaller than the reference driving force.