TRACTION CONTROLLER FOR VEHICLE

• Main Authors: HIRAO TOMOYUKI, KAGEYAMA FUMIO
• Format: Patent
• Language: English
• Published: 08.08.1995
• Edition: 6
• Subjects: ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; BLASTING; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; COMBUSTION ENGINES; CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; CONTROLLING COMBUSTION ENGINES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT; TRANSPORTING; VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES; VEHICLES IN GENERAL; WEAPONS

PURPOSE:To improve the traveling performance and traveling stability by carrying out the control for the oversteered state and the understeered state which are generated in the straight advance or in turn, by distinctly discriminating the states, when the control for reducing slip by reducing the torque of the driving wheel of a vehicle is carried out. CONSTITUTION:In the transition from the straight advance traveling of a vehicle to the turning traveling state having a steering angle over a prescribed value, the turning corresponding correction shown by I is carried out, and after an oversteered state is generated, the oversteering corresponding correction shown by II is carried out, while if the oversteered state or understeered state is generated even if the turning traveling state is not generated, the corresponding correction is not carried out as shown by III. Further, if the return speed in the case where a steering wheel is returned from the correction state is over a prescribed value, the steering wheel is directly returned to the fundamental target slip quantity before the correction as shown by VI, while if the return speed is below a prescribed value, the steering wheel is once returned to the target slip quantity as shown by VI, and after the turning traveling state completes, the return control to the fundamental target slip quantity before the correction as shown by V is carried out.