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Method for calculating a control setpoint of a hybrid powertrain of a motor vehicle

A technology of hybrid power and transmission system, applied in the calculation of the control set value of this kind of power transmission system, in the field of the power transmission system of the internal combustion engine, it can solve the problem of not always getting the desired results, and achieve easy implementation and optimal distribution. , the effect of stable implementation

Active Publication Date: 2019-12-06
RENAULT SA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, the applicants have found that this method does not always yield the desired results

Method used

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  • Method for calculating a control setpoint of a hybrid powertrain of a motor vehicle
  • Method for calculating a control setpoint of a hybrid powertrain of a motor vehicle
  • Method for calculating a control setpoint of a hybrid powertrain of a motor vehicle

Examples

Experimental program
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Embodiment Construction

[0054] Motor vehicles traditionally include a chassis that supports, among other things, the powertrain, body elements, and passenger compartment elements.

[0055] Such as figure 1 As shown, in a hybrid motor vehicle 1 , the hybrid drivetrain includes a thermal traction chain 20 and an electric traction chain 30 .

[0056] The thermal traction chain 20 notably comprises a fuel tank 21 , an internal combustion engine 22 fueled by the tank, and a gearbox 23 connected at its input to the internal combustion engine and at its output to the drive wheels 10 of the motor vehicle.

[0057] The electric traction chain 30 itself comprises a traction battery 31 and one (or, in a variant, several) electric motors 32 supplied with current from the traction battery 31 and whose output shafts are coupled to the drive wheels 10 of the motor vehicle.

[0058] These two traction chains thus combine to rotate the drive wheels 10 of the motor vehicle.

[0059] The motor vehicle 1 also comprise...

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Abstract

The invention concerns a method for calculating a control set point of a hybrid power train of a motor vehicle (1), said hybrid power train comprising an electric motor (32) and an internal combustionengine (22) that is equipped with a gearbox (23) and that is supplied with fuel, said method comprising: a step of acquiring a value relative to a power (Pr) requested at the drive wheels (10) of themotor vehicle, and a step of determining the contribution of the electric motor and the internal combustion engine in order to satisfy the request for power at the drive wheels. According to the invention, the determination step involves calculating a triplet of three values, one value relating to the electromechanical power (Pm) that the electric motor must provide, one value relating to the thermo-mechanical power (Pth) that the internal combustion engine must provide and one value relating to the ratio (Rth) that needs to be engaged in the gearbox, this triplet minimizing the fuel consumption of the internal combustion engine and the current consumption of the electric motor.

Description

technical field [0001] The invention generally relates to a motor vehicle equipped with a hybrid drivetrain, that is to say a drivetrain comprising an electric motor and an internal combustion engine provided with a gearbox. [0002] More specifically, the invention relates to a method for calculating control setpoints for such a powertrain, the method comprising: [0003] - a step of obtaining values ​​related to the power required at the drive wheels of the motor vehicle, and [0004] - Steps to determine the contribution of the electric motor and internal combustion engine to meet the power demand at the drive wheels. Background technique [0005] Hybrid vehicles include conventional thermal traction trains (with an internal combustion engine, fuel tank and gearbox) and electric traction trains (with a traction battery and at least one electric motor). [0006] Such a hybrid vehicle can be driven by its electric traction chain only, or only by its thermal traction chain...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W20/11B60W30/188B60W20/30B60W10/06B60W10/08B60W10/11B60W50/00
CPCB60W10/06B60W10/08B60W10/11B60W30/188B60W2050/0013B60W2050/0022B60W2050/0041B60W2510/0623B60W2510/244B60W2520/10B60W2540/10B60W2710/0677B60W2710/086B60W2710/1005B60W20/30B60W20/11Y02T10/72Y02T10/62B60Y2200/92Y02T10/40Y02T10/84B60W40/10B60W2510/0666B60W2510/085
Inventor S·哈吉-赛义德A·凯特菲-谢里夫G·科林
Owner RENAULT SA
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