VEHICLE REGENERATIVE SPEED CONTROL DEVICE

• Main Authors: YOSHINO, Takahiro, ONO, Masashi, KAGEYAMA, Yuuzou, MOURI, Takanobu, MARUYAMA, Hideki, ISHIZUKA, Takuya
• Format: Patent
• Language: English; French; German
• Published: 24.01.2018
• 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; 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; 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; THERMAL INSULATION IN GENERAL; TRANSPORTING; VEHICLES IN GENERAL; WEAPONS

Provided is a vehicle regenerative speed control device for suppressing undershooting, in which the actual transmission input rotational speed falls below a lower-limit rotational speed, when decreasing the transmission input rotational speed based on a request for a decrease in the regeneration amount during regenerative speed control. The present invention has a belt-type continuously variable transmission (6), a motor generator (4), and a main oil pump (14). The FF hybrid vehicle has a hybrid control module (81) which, when there is a request for an increase in the regeneration amount while decelerating, performs a regenerative speed control for downshifting the belt-type continuously variable transmission (6) to the low gear ratio side, and increasing rotational speed of a transmission input shaft to which the motor generator (4) is connected. The hybrid control module (81) also performs a control for making the rotational speed decrease change rate of the Pri end command rotational speed lower than the rotational speed increase change rate of the Pri end command rotational speed, when the Pri end command rotational speed is being decreased based on a request for a decrease in the regeneration amount during regenerative speed control.