Driving force control system for front-and-rear wheel drive vehicles
First Claim
1. A driving force control system for a front-and-rear wheel drive vehicle that drives one pair of respective pairs of front drive wheels and rear drive wheels by an engine, and another pair of the respective pairs by an electric motor, the driving force control system comprising:
- vehicle speed-detecting means for detecting a vehicle speed of the vehicle;
driving force demand degree-detecting means for detecting a degree of demand for a driving force for driving the vehicle;
target driving force-calculating means for calculating a target driving force for driving the vehicle, based on at least the vehicle speed and the degree of demand for the driving force;
traveling condition-determining means for determining a present traveling condition of the vehicle; and
driving force control means for controlling a driving force of the engine and a driving force of the motor based on the calculated target driving force, in dependence on the traveling condition of the vehicle determined by said traveling condition-determining means.
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Accused Products
Abstract
There is provided a driving force control system for a front-and-rear wheel drive vehicle, which is capable maintaining an optimum slip condition of the drive wheels even on a low-friction road surface, ensuring a proper grip of rear wheels even on a low-friction road surface or a downhill slope, even when the driver operates the steering wheel while the vehicle is performing decelerating travel on such a road, and smoothly performing the assistance of an electric motor when the vehicle is accelerated without developing a torque step, thereby ensuring stable traveling and excellent acceleration and drivability. The front-and-rear wheel drive vehicle drives the front wheels by an engine, and rear wheels by an electric motor via an electromagnetic clutch. The target driving force for driving the vehicle is calculated based on at least a vehicle speed and an accelerator pedal opening. The present traveling condition of the vehicle is determined. The driving force for driving the vehicle is controlled based on the calculated target driving force in dependence on the determined traveling condition of the vehicle.
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Citations
11 Claims
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1. A driving force control system for a front-and-rear wheel drive vehicle that drives one pair of respective pairs of front drive wheels and rear drive wheels by an engine, and another pair of the respective pairs by an electric motor,
the driving force control system comprising: -
vehicle speed-detecting means for detecting a vehicle speed of the vehicle;
driving force demand degree-detecting means for detecting a degree of demand for a driving force for driving the vehicle;
target driving force-calculating means for calculating a target driving force for driving the vehicle, based on at least the vehicle speed and the degree of demand for the driving force;
traveling condition-determining means for determining a present traveling condition of the vehicle; and
driving force control means for controlling a driving force of the engine and a driving force of the motor based on the calculated target driving force, in dependence on the traveling condition of the vehicle determined by said traveling condition-determining means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification