Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for controlling state changes of a drivetrain

A control method and a technology of state change, which are applied to engine-driven traction, control devices, motor vehicles, etc., and can solve problems such as performance reduction and total power reduction

Active Publication Date: 2017-08-18
RENAULT SA
View PDF8 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If this battery is discharged, the total power available is reduced and performance may be reduced since the only source of energy available is the internal combustion engine

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for controlling state changes of a drivetrain
  • Method for controlling state changes of a drivetrain
  • Method for controlling state changes of a drivetrain

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] The method of the present invention controls state changes of a vehicle driveline that connects at least one internal combustion engine and / or one electric machine to the wheels of the vehicle via a transmission that transfers torque from the internal combustion engine and / or an electric machine according to one or more gear ratios Or the motor is passed to the wheels. Depending on the reduction in vehicle acceleration caused by the transition, the method is broken down into a number of steps leading to prohibition or authorization of the drivetrain switching from the current state E_crt to the target state E_cib. This strategy is applied in the same way to all potential target states of the drive train. However, if the target state under consideration corresponds to the current state, maintaining said state is not subject to this strategy.

[0031] The first step consists in defining the basic data for switching from the current state E_crt to the target state E_cib. ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for controlling state changes of a drivetrain of a vehicle connecting at least one heat engine and / or one electric motor to the wheels of the vehicle via a transmission, providing the transfer of torque from the heat engine and / or from the electric motor to the wheels in one or more gear ratios, characterised in that the authorisation to switch from the current state (E_crt) to a target state (E_cib) depends on reducing the acceleration of the vehicle in the intermediate state (E_itr) causing a lower acceleration of the vehicle during the transition between the current state (E_crt) and the target state (E_cib).

Description

technical field [0001] The invention relates to a control strategy implemented in a powertrain computing unit. Background technique [0002] A preferred but non-limiting application of the powertrain is found to include at least one internal combustion engine and one electric traction machine. [0003] More precisely, the object of the invention is a method for controlling state changes of a drive train of a vehicle connecting at least one internal combustion engine and / or one electric machine to the wheels of the vehicle via a transmission according to a One or more gear ratios transfer torque from the internal combustion engine and / or electric machine to the wheels. [0004] These states are defined by various combinations of couplers and reducers to transfer torque from the combustion engine and / or electric machine to the wheels according to one or more gear ratios. The state of the driveline can thus be defined by the requested coupler and reducer combination. The sta...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B60W30/182B60W30/18B60W50/00B60W20/15B60W40/107B60L50/16
CPCB60W30/182B60W40/107B60W50/0098B60W20/10B60W50/06B60W2520/10B60W2530/16B60W2540/10B60W2720/106B60W20/19Y02T10/72
Inventor F·勒-卡姆F·鲁多A·勒菲弗尔
Owner RENAULT SA