Vehicle drive device

A drive device, wheel drive technology, applied in the direction of electrical devices, power devices, electric power devices, etc.

Active Publication Date: 2013-06-26
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 increasing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example

[0152]

[0153] Picture 12 It is a collinear chart of the speed of the rear-wheel drive device during the left and right reverse torque control (before the target rotation is reached) during high vehicle speed. It should be noted that, in the figure, vectors generated by the losses that are stably applied to the aforementioned rotating elements are omitted. When running at a high vehicle speed, as described above, the front-wheel drive by the front-wheel drive device 6 becomes the one-way clutch 50 into the non-engaged state. At this time, the hydraulic brakes 60A and 60B are controlled to be in a separated state. Therefore, the connected internal gears 24A and 24B are not locked and become a rotating state.

[0154] In this state, torque control is performed so that the first motor 2A generates a forward first motor torque TM1 based on the target torque, so that the second motor 2B generates a reverse second motor torque based on the target motor speed. TM2 method for speed c...

Example

[0187]

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

[0189] The left and right reverse torque control of the present embodiment controls the first and second motors 2A, 2B such that the internal gears 24A, 24B become the internal gear target rotation speeds. In the following description, the following cases are used 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 become 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] Such as Picture 9 As explained in the section, when the vehicle is moving at a high speed, the first and second electric motors 2A, 2B stop the power operation drive, thereby acting on the planetary gear carriers 23A, 23B from the axles 10A, 10B to move forward. Torque, the one-way clut...

Example

[0211]

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

[0213] The left and right reverse torque control of the present embodiment controls the first and second electric motors 2A, 2B so that one of the planetary gears 22A, 22B becomes the planetary gear target speed. 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 direction of the planetary gears 22A, 22B, the correction torque is added to the first motor 2A so that the rotation direction of the planetary gears 22A, 22B does not reverse. control.

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

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Abstract

The present invention provides a vehicle drive device which can generate a desired yawing moment when left and right reverse torque control is carried out and control first and second motors to be at any target rotating speed simultaneously. A back-wheel drive device is equipped with a left-wheel drive unit possessing a first motor and a first planetary gear reducer arranged on the transmission paths of the first motor and a left back-wheel; a right-wheel drive unit possessing a second motor and a second planetary gear reducer arranged on the transmission paths of the second motor and a right back-wheel; and a control unit. The first motor is connected with a sun gear of the first planetary gear reducer, and the second motor is connected with a sun gear of the second planetary gear reducer; the left back-wheel is connected on a planetary gear carrier of the first planetary gear reducer, the right back-wheel is connected on a planetary gear carrier of the second planetary gear reducer, and inner gears are connected with 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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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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