Differential limiting control device of four-wheel drive vehicle

• Main Authors: FUJII YUSUKE, SAWASE KAORU, USHIRODA YUICHI
• Format: Patent
• Language: Chinese; English
• Published: 27.06.2012
• Subjects: ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES; ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; PERFORMING OPERATIONS; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT; TRANSPORTING; VEHICLES IN GENERAL

A differential limiting control device of a four-wheel drive vehicle, wherein the restraint torque TF of an electronically controlled front limited slip differential (5) between front right and front left wheels is controlled based on a right and left wheel rotational speed difference Delta NF for control as a rotational speed difference between the front right and front left side wheels. Furthermore, the restraint torque TC of an electronically controlled coupling (8) between the front and rear wheels is controlled based on a front and rear wheel rotational speed difference Delta NC for control provided by deducting 1/2 (|Delta NF|/2) of the rotational speed difference between the right and left wheels from a rotational speed difference (Delta NCT - Delta NCD) between the front and rear wheels.