CONTROL DEVICE FOR VEHICLE

• Main Author: HAYASHI AKIRA
• Format: Patent
• Language: English
• Published: 27.01.2011
• 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; BLASTING; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THERMAL INSULATION IN GENERAL; TRANSPORTING; VEHICLES IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To provide a control device for a vehicle, ensuring driving force security and preventing torque drop during a transition period of a stepped transmission.SOLUTION: The control device for the vehicle is equipped with: the stepped transmission 6 having an engine 1, a second motor generator 5, driving wheels 32, 32, and a frictional clutch 7 and a dog clutch 8 which are fastened at a high gear stage and at a low gear stage, respectively, as speed change elements in a driving system. The control system also includes: a speed change control means for outputting a connection/disconnection instruction of the dog clutch 8 and slip-fastening the friction engagement element 7 when shifting is requested. Having a dog clutch fork position switch F for detecting the connection/disconnection of the dog clutch 8, the speed change control device corrects a hydraulic pressure instruction starting value Ths to the friction engagement element 7 in the next speed change control based on a difference between a hydraulic pressure target value Tht of the friction engagement element when the friction engagement element 7 for connecting and disconnecting the dog clutch 8 is slip-fastened and a hydraulic pressure instruction value Thoto the friction engagement element 7 when the dog clutch 8 is actually connected and disconnected.