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Method and Apparatus for Limiting Engine Torque to Protect Disconnect Clutch in Hybrid Vehicle

A technology for separating clutches and engines, which is applied to the arrangement of multiple different prime movers of power plants, hybrid vehicles, and general power plants, and can solve problems such as unprotected separation clutches.

Active Publication Date: 2014-06-11
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the disconnect clutch is not protected using the existing transmission interface

Method used

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  • Method and Apparatus for Limiting Engine Torque to Protect Disconnect Clutch in Hybrid Vehicle
  • Method and Apparatus for Limiting Engine Torque to Protect Disconnect Clutch in Hybrid Vehicle
  • Method and Apparatus for Limiting Engine Torque to Protect Disconnect Clutch in Hybrid Vehicle

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Embodiment Construction

[0022] A detailed description of the illustrated embodiments of the invention is provided below. The disclosed embodiments are exemplary of the invention, which may be embodied in various and alternative forms. The figures are not necessarily to scale; some features may be exaggerated or minimized to show details of particular components. Specific structural and functional details disclosed in this application are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art how to practice the invention.

[0023] refer to figure 1 , schematically illustrates a powertrain 10 for a hybrid vehicle. The engine 12 and motor 14 , individually or in combination, provide torque input to the driveline 10 . The transmission 16 receives torque from the engine 12 and the motor 14 .

[0024] A disconnect clutch 20 is provided between the engine 12 and the motor 14 . Disconnect clutch 20 allows torque to be provided by engine 12 , by motor...

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PUM

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Abstract

The invention discloses a method and apparatus for limiting engine torque to protect a disconnect clutch in a hybrid vehicle. A powertrain comprises an engine, a motor, a disconnect clutch connected between the engine and the motor, and a transmission. The transmission is connected to the motor by a launch clutch and selectively and indirectly connected to the engine by the disconnect clutch. A controller receives an engine torque output signal and reduces the torque output of the engine to the clutch capacity limit value. A system and a method are also provided for controlling a powertrain for a hybrid vehicle.

Description

technical field [0001] The present invention relates to a powertrain of a hybrid vehicle having an engine and an electric machine (or motor / generator) that provide torque in combination or independently to drive the vehicle. Background technique [0002] A transmission for a vehicle having an internal combustion engine is protected by limiting an input torque interface to the transmission. In some hybrid vehicles both the internal combustion engine and the electric machine (or motor / generator) are used to generate torque and they are disengaged by a disconnect clutch. The sum of the torque provided by the internal combustion engine and the electric machine is transmitted to the input of the transmission by launching the clutch. The launch clutch must be rated (rate) to control torque from the engine and electric motor, including inertial torque. [0003] The transmission interface may be used to limit torque to the transmission input to protect a launch clutch connecting a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K6/38B60W10/06B60W10/08B60W10/02B60W20/00
CPCB60W10/06B60W10/02B60W10/08B60W30/186B60K2006/4825B60W2510/0216B60W2510/0241B60W2710/0666B60W2710/083B60W20/20Y02T10/62
Inventor 马克·斯蒂芬·耶马扎基伯纳德·D·内佛西丹尼尔·斯科特·科尔文弗朗西斯·托马斯·康诺利沃尔特·约瑟夫·欧特曼
Owner FORD GLOBAL TECH LLC