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Method of distributing torque between sets of wheels of a motor vehicle

A technology for motor vehicles and wheel sets, which is applied in the direction of motor vehicles, hybrid vehicles, vehicle parts, etc., and can solve problems such as non-correspondence and untimely acceleration of vehicles

Active Publication Date: 2021-07-06
PEZHO SITROEN AUTOMOBILS SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The disadvantage of this approach is that in some use cases the total torque applied to the front and rear axles does not correspond to the torque request of the driver of the vehicle and can be especially greater than this request, which can lead to untimely accelerate

Method used

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  • Method of distributing torque between sets of wheels of a motor vehicle
  • Method of distributing torque between sets of wheels of a motor vehicle
  • Method of distributing torque between sets of wheels of a motor vehicle

Examples

Experimental program
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Embodiment Construction

[0025] In what follows, as a non-limiting example, a motor vehicle is considered to be figure 1 The type of vehicle 1 shown.

[0026] figure 1 A vehicle 1 is shown comprising a power train and a computer 14 managing the power train.

[0027] The drive train of the vehicle 1 comprises a first traction engine 5 associated with the first transmission 4 and a second traction engine 7 associated with the second transmission 9 .

[0028] For example, the first transmission device 4 is responsible for driving the front wheel set 2 of the vehicle 1 to rotate, while the second transmission device 9 is responsible for driving the rear wheel set 3 of the vehicle 1 to rotate. But the reverse is also possible.

[0029] The first engine 5 is, for example, an internal combustion engine.

[0030] Note that the first transmission 4 may be automatic or non-automatic. Thus, said first transmission may be an automatic transmission, a manual or non-manually actuated transmission, or a dual cl...

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PUM

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Abstract

In a method of distributing a total set torque (Cglobal) between sets of wheels of a vehicle, a first branch (20) includes a process involving subtracting (22) the optimized torque (Car_opti) from the total set torque (Cglobal) step in order to obtain the first set torque (Cav) to be applied to the first set of wheels, the second branch (30) involves subtracting (31) from the total set torque (Cglobal) with the first wheel The step of setting the associated estimated torque (Cav_estim) in order to obtain a second set torque (Car) to be applied to the second set of wheels then involves limiting (32) the second set torque (Car) Between predetermined minimum torque and maximum torque. The first branch (20) also includes a step involving limiting (21) the optimized torque (Car_opti) between a minimum torque and a maximum torque before calculating the first torque (Cav).

Description

technical field [0001] The invention relates to a method of distributing torque between sets of wheels of a motor vehicle. [0002] The invention applies in particular to a hybrid vehicle with four powered wheels arranged with a plurality of engines driving the front and rear axles of the vehicle independently. [0003] A hybrid vehicle includes at least one internal combustion engine and at least one other traction machine (eg, an electric motor). Other types of traction machines (eg hydraulic presses or air compressors) are also contemplated. [0004] The invention applies more generally to vehicles comprising two powered wheel sets the drive of which can be controlled independently. In such vehicles, the torque distribution method is capable of controlling the level of drive torque to be applied to each of the vehicle's wheel sets. Background technique [0005] From document FR-A1-3005921 is known a method for distributing torque between the front and rear axles of a h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W20/15B60W10/06B60W10/08B60W30/02B60K6/448B60K6/52B60K17/356
CPCB60K6/448B60K6/52B60K17/356B60W10/06B60W10/08B60W30/02B60W2710/0666B60W2710/083B60W2720/403B60W2050/0027B60W20/15Y02T10/62
Inventor Y·米约F·梅特拉尔德A·巴尔代
Owner PEZHO SITROEN AUTOMOBILS SA