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Four-wheel drive force distribution apparatus

A technology of distributing device and driving force, applied in the direction of control drive, control device, electric vehicle, etc., to achieve the effect of improving driving performance

Pending Publication Date: 2021-11-23
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, there is a possibility that the front inner wheel with a small ground load will slip and become an understeer state.

Method used

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  • Four-wheel drive force distribution apparatus
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  • Four-wheel drive force distribution apparatus

Examples

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Embodiment Construction

[0024] First, refer to figure 1 A four-wheel drive force distribution device for a vehicle will be described. Wherein, the four-wheel driving force distribution device is an example, and various known four-wheel driving force distribution devices that can arbitrarily distribute the driving force to the front and rear wheels can be used instead. figure 1 Four-wheel drive power distribution shown. refer to figure 1 , the vehicle as a whole is denoted by reference numeral 1 . Among them, in figure 1 Among them, 2a and 2b represent a pair of front wheels, 3a and 3b represent a pair of rear wheels, 4 represents an internal combustion engine, and 5 represents a drive torque distributor. A front drive shaft 6 extends forward from the drive torque distributor 5 , and a rear drive shaft 7 extends rearward. The front drive shaft 6 is connected to the respective front wheels 2 a and 2 b via the front differential 8 and the corresponding axles 9 , and the rear drive shaft 7 is connec...

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PUM

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Abstract

The invention provides a four-wheel drive force distribution apparatus which is used for improving acceleration performance and turning performance of a vehicle. A four-wheel drive force distribution apparatus for distributing drive forces to the wheels of a four-wheel drive vehicle, in which the distribution of drive force to the front inside wheel (2a) and the distribution of drive force to the rear inside wheel (3a) are adjusted based on a ground load of the front inside wheel (2a) and a ground load of the rear inside wheel (3a) when the vehicle is turning, and the distribution of drive force to the front inside wheel (2a) compared with distribution of drive force to the rear inside wheel (3a) is reduced the smaller the ratio of the ground load of the front inside wheel (2a) to the ground load of the rear inside wheel (3a) during turning.

Description

technical field [0001] The invention relates to a four-wheel driving force distribution device. Background technique [0002] As for tires used in vehicles, that is, wheels, as the ground contact load of the wheels increases, the grip force on the ground increases, and when the ground contact load of the wheels decreases, the grip force on the ground decreases. When the grip on the ground becomes small, if a large driving force is applied to the wheels, the wheels will slip, making it impossible to properly steer the vehicle. On the other hand, when the vehicle turns, the ground contact load of the inner wheel viewed from the turning center becomes smaller than the ground contact load of the outer wheel viewed from the turning center. If the driving force is not enough, the inner wheel will slip and it will not be possible to steer the vehicle properly. In view of this, in two-wheel drive vehicles, there is known a two-wheel drive force distribution device that makes the d...

Claims

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Application Information

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IPC IPC(8): B60L15/20
CPCB60L15/2036B60L2240/46Y02T10/72B60K17/34B60W10/14B60W10/10B60W2720/403B60W30/045B60W30/18145B60W40/107B60W40/109B60W2710/105B60W10/184B60K17/35B60W2530/10B60W2520/105B60W2520/125B60W2510/0657B60W2510/1005B60W2540/18B60W2520/10B60W2710/18
Inventor 光本尚训丹羽智彦
Owner TOYOTA JIDOSHA KK
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