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Vehicle and control method thereof, power output apparatus and control method thereof, and driving system and control method thereof

A control method and vehicle technology, applied in the direction of electric braking system, engine-driven traction, transmission device control, etc., can solve the problems that have not been disclosed, so as to ensure smooth change, reduce torque impact, and reduce the change of braking force Effect

Inactive Publication Date: 2008-08-13
TOYOTA JIDOSHA KK +1
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, the cited references do not disclose the braking control in the event that the shifting state of the transmission changes under the regenerative control of the electric motor in a four-wheel drive vehicle equipped with such a power output apparatus

Method used

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  • Vehicle and control method thereof, power output apparatus and control method thereof, and driving system and control method thereof
  • Vehicle and control method thereof, power output apparatus and control method thereof, and driving system and control method thereof
  • Vehicle and control method thereof, power output apparatus and control method thereof, and driving system and control method thereof

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Embodiment Construction

[0028] One mode of carrying out the present invention will be described below as a preferred embodiment with reference to the accompanying drawings.

[0029] FIG. 1 schematically illustrates the configuration of a hybrid vehicle 20 equipped with a power output apparatus including a drive system according to one embodiment of the present invention. The hybrid vehicle 20 shown in FIG. 1 is configured as a four-wheel drive vehicle, and includes an engine 22, a three-shaft power distribution integration mechanism 30, a motor MG1, a motor MG2 connected to the power distribution integration mechanism 30 via a transmission 60, and a transmission device. 34. Electronically controlled hydraulic brake unit (hereinafter referred to as "brake unit") 90 and hybrid electronic control unit 70 (hereinafter referred to as "hybrid ECU") that controls the operation of the entire hybrid vehicle, wherein the three-axis power The distribution integration mechanism 30 is connected to the crankshaft ...

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Abstract

The invention provides a vehicle and its control method, a power output device and its control method, a drive system and its control method. In response to the driver's brake request operation, for example, the driver depresses the brake pedal (85), the hybrid vehicle (20) sets the regenerative braking speed of the electric motor (MG2) according to the setting state of the gear ratio of the transmission (60). torque with respect to the ratio of the preset braking torque requirement (Tr*) and the braking torque of the braking unit (90) relative to the ratio of the preset braking torque requirement (steps S280, S290, S310, S320, S390 and S400). The hybrid vehicle controls the electric motor to output regenerative braking torque based on the ratio of the preset braking torque request to the set regenerative braking torque, and at the same time controls the braking unit (90) to enable braking based on the preset braking torque. The braking torque of the torque request and the regenerative braking torque of the electric motor is applied in a distributed manner to the front wheels (39a and 39b) and the rear wheels (39c and 39d) according to a predetermined front-rear braking torque distribution ratio (d).

Description

technical field [0001] The present invention relates to a vehicle driven with power output to front and rear wheels respectively, a power output device and a drive system mounted on such a vehicle, and control methods of the vehicle, the power output device and the drive system. Background technique [0002] There is known a structure of a power output apparatus for a hybrid vehicle equipped with a hydraulic brake unit, which includes a drive shaft, an engine connected to the drive shaft via a planetary gear mechanism, a generator connected to the planetary gear mechanism, and a power generator connected to the drive shaft via a transmission. A motor connected to the drive shaft (for example, see Japanese Patent Laid-Open No. 2006-187158). In the case where the shift state of the transmission is changed from the Hi gear to the Lo gear when the electric motor is regeneratively controlled for braking the vehicle, the power output apparatus sets the torque command of the electr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L7/18B60K6/445B60K6/52B60K6/547B60K17/344B60K17/356B60L7/14B60L50/16B60T8/17B60T8/26B60W10/06B60W10/08B60W10/10B60W10/18B60W20/00F16H63/40F16H63/50
CPCB60K6/445B60K6/52B60L7/18B60L7/26B60L2240/423B60T2270/604B60W10/08B60W10/115B60W10/184B60W20/00B60W30/18127B60W2710/083B60W2720/403Y10S903/945B60L50/15B60L50/16Y02T10/62Y02T10/64Y02T10/7072B60K2006/4833B60K6/48B60W10/18B60W10/10B60W20/13B60W2510/18B60K17/354B60W2710/24
Inventor 木村秋广上冈清城田岛阳一青木刚志
Owner TOYOTA JIDOSHA KK
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