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Method and apparatus for storing kinetic energy within an automatic transmission accumulator

A technology of accumulator and transmission, applied in the direction of accumulator device, brake, mechanical equipment, etc., can solve complex, existing, expensive and other problems

Pending Publication Date: 2018-12-14
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods usually involve complex and expensive components
Kinetic energy can also be present and lost in automatic transmissions

Method used

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  • Method and apparatus for storing kinetic energy within an automatic transmission accumulator
  • Method and apparatus for storing kinetic energy within an automatic transmission accumulator
  • Method and apparatus for storing kinetic energy within an automatic transmission accumulator

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Embodiment Construction

[0014] As required, detailed embodiments of the invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention that 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. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention.

[0015] Current automatic transmissions have hydraulically actuated clutches and brakes for controlling the transmission using hydraulic pumps to pressurize and pump fluid to the control elements. Typically, the pump is directly driven by the engine via a mechanical coupling such as an input shaft. The pump may provide hydraulic fluid to various control elements and an accumulator connected to ...

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Abstract

A system for a vehicle is disclosed. The system may include an accumulator, a pump, and a controller. The controller may be configured to, responsive to braking of the vehicle, close a line pressure regulator to isolate the accumulator and pump from a transmission pressure line demand, and operate the pump to charge the accumulator without satisfying any of the demand, and responsive to a tip-in event, open the line pressure regulator and operate the accumulator and pump to satisfy the demand.

Description

technical field [0001] The present disclosure relates to controlling a hydraulic circuit within an automatic transmission to capture kinetic energy. Background technique [0002] The fuel economy and emissions performance of a motor vehicle are important characteristics. Higher fuel economy and lower emission levels may make vehicles more attractive to potential buyers and may help motor vehicle manufacturers meet fuel economy and emissions standards imposed by local governments. One way to reduce fuel consumption and reduce vehicle emissions is to capture the kinetic energy produced by a moving vehicle. It is well known to capture the kinetic energy expended when applying friction brakes. However, these methods often involve complex and expensive components. Kinetic energy can also be present and lost in automatic transmissions. Automatic transmissions may utilize pressurized hydraulic fluid to power various hydraulic components within the transmission. Contents of th...

Claims

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Application Information

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IPC IPC(8): F16H61/00F15B1/02
CPCF16H61/0025F16H2061/0018F16H2061/0034F16H2061/0015F15B1/033F15B2211/20546F15B2211/212F15B2211/6306F15B2211/6313F15B2211/665F15B2211/6652F15B2211/88B60T1/10B60W10/196B60W10/188B60W10/184B60T13/14
Inventor 拉姆·萨德散·德文德兰约翰·爱德华·布里维克史蒂夫·阿纳托尔·弗赖特
Owner FORD GLOBAL TECH LLC