RANGE CHANGEOVER CONTROL DEVICE FOR AUTOMATIC TRANSMISSION

• Main Authors: OGOSHI NAOKI, KUSAFUKA MUNEO, TAKEMOTO KAZUO, MURASE YOSHITAKA, NAGASHIMA HIROTOSHI
• Format: Patent
• Language: English
• Published: 06.07.2001
• Edition: 7
• 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; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; THERMAL INSULATION IN GENERAL; TRANSPORTING; VEHICLES IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To calculate the requisite draw torque with a motor at the time of changing over from the P-range to any other range and drive the motor with the obtained requisite draw torque. SOLUTION: A CPU 30 computes the drawoff load acting on a detent lever 5, etc., when a shift is made from the P-range to any other range at manipulating a shift lever 25, while an SBW-CU 32 controls the driving force of a drive motor 12 for changing over the range in such a way as corresponding to the load calculated by the CPU 30 when the shift lever 25 moves from the P-range to other range. Accordingly if a large drawoff load is required, the drive motor 12 is operated with a large torque, and in case the operation can manage with a minor drawoff load, the motor is operated with a minor torque, and thereby the motor speed is suppressed.