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Method for starting a hybrid vehicle with increased battery power

A starting method and a hybrid technology, which are applied to hybrid vehicles, the arrangement of multiple prime movers of a general power plant, motor vehicles, etc., and can solve problems such as the inability to start a heat engine

Active Publication Date: 2020-02-21
PEZHO SITROEN AUTOMOBILS SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] With the torque capacity of the clutch substantially reduced while the electric motor is providing little or no torque due to the state of charge of the traction battery, this can occur when the heat engine is not passing Problems preventing starting when the clutch is delivering enough torque
The vehicle remains stationary and customers perceive this as a serious problem with powertrain failure

Method used

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  • Method for starting a hybrid vehicle with increased battery power
  • Method for starting a hybrid vehicle with increased battery power

Examples

Experimental program
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Embodiment Construction

[0026] figure 1 A hybrid vehicle is shown comprising a heat engine 2 driven by an automatically controlled clutch 4 , a transmission 6 with different gear ratios connected to the front drive wheels 8 of the vehicle.

[0027] The input shaft of the transmission 6 receiving the movement of the clutch 4 comprises a traction motor 10 powered by a traction battery 12 . In this way, by utilizing the different gear ratios provided by the transmission 6 , the electric motor 10 can output torque to the drive wheels 8 without the need to transmit the torque of the electric motor 10 through the clutch 4 .

[0028] The computer of the powertrain, which is connected to the monitoring manager of the vehicle, controls the operation of the powertrain to respond to the driver's demands while optimizing energy consumption and emission of polluting gases.

[0029] In particular, a hybrid vehicle can be driven only by the heat engine 2 , the clutch 4 is closed to drive the transmission 6 , and t...

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Abstract

The invention concerns a method for starting a hybrid motor vehicle comprising a heat engine (2) transmitting torque via a clutch (4), an electric traction machine (10) powered by a battery (12) delivering the torque of same without transmitting this torque via the clutch, a method for calculating the maximum allowed power delivered by the battery (12) depending on the state of charge of same, andcomprising a method for evaluating the torque that can be transmitted by the clutch (4), this method being characterised in that, when the starting of the vehicle requires the clutch (4) to slip, ifthe torque that can be transmitted by the clutch (4) is detected to be lower than a torque necessary in order to start this vehicle, and a maximum allowed power of the battery (12) is lower than the maximum possible power of same, it allows the battery (12) to deliver a power greater than the maximum allowed power.

Description

technical field [0001] The invention relates to a method for starting a hybrid vehicle which is stopped or below a speed threshold, the vehicle being equipped with a heat engine and a traction electric machine, and a hybrid vehicle comprising means for carrying out the starting method device. Background technique [0002] A type of hybrid vehicle using electric energy, known as a parallel hybrid vehicle, includes a first motorization device equipped with a heat engine and a second motorization device A device-powered traction motor connected to the drive wheels without passing through the clutch of the heat engine. This electrical energy storage device, hereinafter referred to as a battery, can use all types of technology, especially electrochemical energy storage cells or capacitors. [0003] The heat engine is connected to the drive wheels via a transmission with several gear ratios, which transmission comprises a clutch, in particular a dry clutch, at its input. When s...

Claims

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Application Information

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IPC IPC(8): B60K6/48B60W10/26B60W20/40B60W20/19B60W30/18B60W30/186B60W10/02B60W10/06B60W10/08
CPCB60K6/48B60W10/02B60W10/06B60W10/08B60W10/26B60W30/18027B60W30/186B60K2006/4825B60W2510/0275B60W2510/0291B60W2510/244B60W2710/242B60W20/19Y02T10/62B60W2710/027
Inventor 伊曼纽尔·科兹尤汗·米豪
Owner PEZHO SITROEN AUTOMOBILS SA
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