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drive unit for vehicle

A driving device and wheel driving technology, which is applied in the direction of electric device, power device, electric power device, etc.

Active Publication Date: 2016-06-29
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In recent years, the demand for energy saving and improvement of fuel efficiency has become increasingly strong, and there is still room for improvement in the vehicle drive device described in Patent Document 1.

Method used

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Examples

Experimental program
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Effect test

no. 1 approach

[0153] Figure 12 It is a speed collinear diagram of the rear-wheel drive device at the time of left-right reverse torque control (before the target rotation is reached) at high vehicle speed. In addition, in the figure, the vector which arises from the loss etc. which are stably applied to each rotating element mentioned above is abbreviate|omitted. When traveling at a high vehicle speed, as described above, the front-wheel drive is performed by the front-wheel drive device 6 , so the one-way clutch 50 is in a disengaged state. At this time, the hydraulic brakes 60A and 60B are controlled to be in a disengaged state. Therefore, the connected internal gears 24A and 24B are not locked and are in a rotating state.

[0154] In this state, torque control is performed so that the first electric motor 2A generates the first electric motor torque TM1 in the forward direction according to the target torque, and the second electric motor 2B generates the second electric motor torque ...

no. 2 approach

[0188] Next, the left-right reverse torque control of the second embodiment will be described.

[0189] The left-right reverse torque control of the present embodiment controls the first and second electric motors 2A and 2B so that the internal gears 24A and 24B become the target rotational speeds of the internal gears. In the following description, the following case will be described as an example. : In order to engage the hydraulic brakes 60A and 60B, a correction torque is added to the second electric motor 2B so that the internal gears 24A and 24B are in a zero rotation state (the rotation speed is zero) so that the rotation speed of the second electric motor 2B becomes the motor target rotation speed.

[0190] like Figure 9 As explained in , when the forward vehicle speed is high, the first and second electric motors 2A and 2B stop the power running drive, thereby acting from the axles 10A and 10B to the planetary carriers 23A and 23B in a forward direction for forward ...

no. 3 approach

[0212] Next, the left-right reverse torque control of the third embodiment will be described.

[0213] The left-right reverse torque control of the present embodiment controls the first and second electric motors 2A and 2B so that one of the planetary gears 22A and 22B becomes the target rotational speed of the planetary gear. In the following description, the following case is taken as an example To explain: in order to prevent backlash caused by the reversal of the rotation directions of the planetary gears 22A and 22B, the correction torque is applied to the first electric motor 2A so that the rotation directions of the planetary gears 22A and 22B are not reversed. control.

[0214] Figure 21 (a) is a speed collinear diagram of the rear-wheel drive device 1 during a left turn of the vehicle 3 , and the rear-wheel drive device 1 uses a first electric motor 2A to reverse the direction according to the target torque in order to assist the turning of the vehicle 3 . The torq...

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Abstract

The present invention provides a drive device for a vehicle capable of generating a desired yaw moment while controlling first and second electric motors to arbitrary target rotational speeds during left-right inverse torque control. The rear wheel drive device includes: a left wheel drive device including a first electric motor and a first planetary gear reducer provided on a power transmission path between the first electric motor and the left rear wheel; a right wheel drive device including a second electric motor 1. A second planetary gear reducer arranged on the power transmission path between the second electric motor and the right rear wheel; and a control device. The first motor is connected to the sun gear of the first planetary gear reducer, the second electric motor is connected to the sun gear of the second planetary gear reducer, and the left rear is connected to the planetary gear carrier of the first planetary gear reducer The right rear wheel is connected to the planetary gear carrier of the second planetary gear reducer, and the internal gears are connected to each other.

Description

technical field [0001] The present invention relates to a vehicle drive system provided with a left wheel drive device for driving a left wheel and a right wheel drive device for driving a right wheel. Background technique [0002] Patent Document 1 discloses a driving device for a vehicle including a left wheel driving device and a right wheel driving device. The left wheel driving device has a first electric motor for driving the left wheel of the vehicle, A first planetary gear type transmission on the power transmission path of the left wheel, the right wheel drive device has a second motor that drives the right wheel of the vehicle, and a second motor that is arranged on the power transmission path between the second motor and the right wheel. Planetary gear transmission. In the first and second planetary gear transmissions, the first and second electric motors are respectively connected to the sun gear, the left wheel and the right wheel are respectively connected to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60K17/16B60L50/15B60L50/16
CPCB60L7/14B60L7/26B60L15/2009B60L15/2036B60L15/2054B60L2210/40B60L2220/46B60L2240/12B60L2240/24B60L2240/421B60L2240/423B60L2240/461B60L2240/485B60L2240/486B60L2250/26B60L2260/28B60L2270/145B60L2220/50B60L50/61B60L50/16B60L58/12B60L50/66B60K7/0007B60K17/046B60K2007/0046B60K2007/0092B60Y2400/427B60K1/02Y02T10/62Y02T10/64Y02T10/70Y02T10/72Y02T10/7072
Inventor 筱原势野口真利安藤聪土桥诚
Owner HONDA MOTOR CO LTD
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