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Method and device for storing kinetic energy in an accumulator of an automatic transmission

A technology of accumulators and transmissions, which is applied in the direction of accumulator devices, transmission device control, fluid pressure actuation devices, etc., and can solve complex, expensive, loss and other problems

Active Publication Date: 2022-04-08
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods often involve complex and expensive components
Kinetic energy can also be present and lost in an automatic transmission

Method used

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  • Method and device for storing kinetic energy in an accumulator of an automatic transmission
  • Method and device for storing kinetic energy in an accumulator of an automatic transmission
  • Method and device for storing kinetic energy in an accumulator of an automatic transmission

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Embodiment Construction

[0017] 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 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. 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.

[0018] Current automatic transmissions have hydraulically actuated clutches and brakes for controlling the gear transmission using a hydraulic pump to pressurize fluid and pump it to the control elements. Typically, the pump is directly driven by the engine through a mechanical coupling, such as an input shaft. The pump may provide hydraulic fluid to various control elements and to an accumul...

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Abstract

Methods and apparatus for storing kinetic energy in an automatic transmission accumulator are disclosed. A vehicle having a controller is provided. The controller may be configured to hydraulically charge the accumulator in response to identifying a predicted future braking event, and to stop charging the accumulator in response to a pressure in the accumulator exceeding a first threshold and utilize the The pressure of the accumulator meets the transmission line pressure demand to start depleting the accumulator before the braking event begins.

Description

technical field [0001] The present disclosure relates to controlling regenerative braking torque in vehicles equipped with automatic transmissions. Background technique [0002] Fuel economy and emissions performance of a car are important characteristics. Higher fuel economy and lower emissions ratings could make vehicles more attractive to potential buyers and could help automakers 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 moving vehicles. Capturing the kinetic energy dissipated upon application of friction brakes is well known. However, these methods often involve complex and expensive components. Kinetic energy can also be present and lost in an automatic transmission. Automatic transmissions may utilize pressurized hydraulic fluid to power various hydraulic components within the transmission. Contents of the invention [0003]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B1/02F16D61/00B60T1/10
CPCB60T1/10F15B1/024F16D61/00B60Y2300/18125F16H59/54F16H59/68F16H61/0021F16H2059/683F16H2061/0034F15B1/033F16H61/30F16H2061/305
Inventor 拉姆·苏达桑·德文德兰约翰·爱德华·布莱维克史蒂文·阿那托勒·福莱特
Owner FORD GLOBAL TECH LLC