SHIFT CONTROL APPARATUS FOR BELT TYPE CONTINUOUSLY VARIABLE TRANSMISSION

• Main Authors: WAKAYAMA HIDESHI, YAMADA NAOHIRO, AOYAMA NORITAKA, WAKU KOUSUKE, TATEWAKI KEICHI
• Format: Patent
• Language: English; Korean
• Published: 08.10.2013
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; THERMAL INSULATION IN GENERAL; WEAPONS

PURPOSE: A gear shift control apparatus of a belt type continuously variable transmission is provided to prevent a belt from being slipped when an engine is stopped during a cost stop control. CONSTITUTION: A variator changes a gear ratio by changing a winding diameter of a belt which is inserted and supported by a hydraulic pressure supplied to a pulley. A friction fastening element connected to the variator delivers driving power of a driving power source to a driving wheel to be possibly controlled. A control unit (12) reduces a torque transmission capacity which is possibly delivered by the friction fastening element during a cost stop control for stopping the driving power source while driving a vehicle to be lower than a belt capacity which is torque possibly delivered by the belt by an insertion support force of the pulley. [Reference numerals] (1) Engine; (11) Hydraulic control circuit; (12) Controller; (122) Memory device; (123) Input interface; (124) Output interface; (41) Accelerator openness sensor; (42) Rotation speed sensor; (43) Vehicle speed sensor; (44) Oil temperature sensor; (46) Inhibitor switch; (47) Brake sensor