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Transmission hydraulic control system having an automatic engine stop-start accumulator

A hydraulic control system, accumulator technology, applied in the direction of transmission control, elements with teeth, clutches, etc., can solve problems such as slip delay, clutch and/or brake disengagement, etc.

Active Publication Date: 2013-05-15
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This results in complete disengagement of the clutches and / or brakes within the transmission
When the engine is restarted, these clutches and / or brakes can take time to fully re-engage, creating slip and delay between the engagement of the accelerator pedal or the release of the brakes and the movement of the vehicle

Method used

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  • Transmission hydraulic control system having an automatic engine stop-start accumulator
  • Transmission hydraulic control system having an automatic engine stop-start accumulator
  • Transmission hydraulic control system having an automatic engine stop-start accumulator

Examples

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Embodiment Construction

[0067] The following description is merely exemplary in nature and is not intended to limit the invention, application, or uses.

[0068] refer to figure 1 , a motor vehicle is shown and generally designated by the numeral 5 . The motor vehicle 5 is shown as a passenger car, but it should be understood that the motor vehicle 5 may be any type of vehicle, such as a truck, van, or the like. Motor vehicle 5 includes an exemplary drivetrain 10 . It should be understood that although a rear wheel drive drivetrain has been shown at the outset, the motor vehicle 5 may have a front wheel drive drivetrain without departing from the scope of the present invention. The drivetrain 10 generally includes an engine 12 interconnected with a transmission 14 .

[0069] Engine 12 may be a conventional internal combustion engine or an electric engine, or any other type of prime mover, without departing from the scope of the present invention. Engine 12 provides drive torque to transmission 14...

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PUM

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Abstract

A hydraulic control system is provided for controlling the actuation of a plurality of torque transmitting mechanisms. The hydraulic control system includes an accumulator having parallel feed paths to the plurality of torque transmitting mechanisms.

Description

[0001] cross reference [0002] This application claims the benefit of US Provisional Application No. 61 / 559,467, filed November 14, 2011. The disclosures of the aforementioned applications are incorporated herein by reference. technical field [0003] The present invention relates to a hydraulic control system with an automatic engine stop-start accumulator, and more particularly to an automatic engine stop-start accumulator with parallel torque transmitting device input lines. Background technique [0004] The statements in this section merely provide background information related to the present disclosure and may or may not constitute prior art. [0005] A typical automatic transmission includes a hydraulic control system, which is used, among other things, to actuate a plurality of torque-transmitting devices. For example, these torque transmitting devices may be friction clutches and brakes. Conventional hydraulic control systems typically include a main pump that p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/4096F16H61/4008
CPCF16H2061/0034F16H61/0021F16H61/4008F16H61/4096F16H61/0206F16D48/02F16D2048/0221F16D2048/0281F16D2048/0203F16D48/066
Inventor K·E·埃伯
Owner GM GLOBAL TECH OPERATIONS LLC