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Self-orienting piston spring accumulator

An accumulator and piston technology, applied in the accumulator field, can solve the problem of increasing the number of times the engine needs to be restarted

Inactive Publication Date: 2015-11-25
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This helps reduce fuel consumption, but increases the number of times the engine needs to be restarted

Method used

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  • Self-orienting piston spring accumulator
  • Self-orienting piston spring accumulator
  • Self-orienting piston spring accumulator

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Embodiment Construction

[0014] The embodiments of the present disclosure are described here. However, it should be understood that the disclosed embodiments are merely examples, and other embodiments may take various and alternative forms. The drawings are not necessarily drawn to scale; some features may be exaggerated or minimized to show the details of specific components. Therefore, the specific structural and functional details disclosed herein should not be construed as limiting, but merely as a representative basis for teaching those skilled in the art to use the present invention in various ways. As those of ordinary skill in the art will understand, the various features shown and described with reference to any one of the drawings can be combined with features shown in one or more other drawings to produce what is not explicitly shown or described 的实施例。 Example. The combinations of features shown provide representative embodiments for typical applications. However, various combinations and ...

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Abstract

An accumulator for a vehicle may include a cylinder defining a bore having an inner surface, and a piston moveable within the bore. The piston may include a seal and a guide section defined by a truncated sphere. The guide section orients the piston within the bore such that the seal maintains contact with the inner surface of the bore.

Description

Technical field [0001] This application relates to an accumulator for a transmission in a vehicle powertrain. Background technique [0002] The accumulator is part of the transmission in the vehicle powertrain. The accumulator stores hydraulic potential energy when the engine is stopped. If the internal pressure of the accumulator is lower than the pressure of the hydraulic pump, hydraulic fluid flows into the accumulator and fills the accumulator. The accumulator stores this volume of fluid under pressure to store hydraulic potential energy. According to the engine restart command, the accumulator supplies pressurized hydraulic fluid to the shift elements necessary for the transmission to transmit power after the engine is started. This is useful for vehicles that use an engine start / stop system. [0003] When torque is not needed (for example, when the vehicle is stopped at a traffic signal), the engine start / stop system stops the vehicle engine. This helps reduce fuel consu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B1/04
CPCF15B1/04B60K6/12F15B1/24F15B2201/312F16H2061/0034F15B2201/21Y02T10/62F15B1/024F15B13/02F16J1/09F16J15/16
Inventor 列弗·佩卡尔斯基马克·戴维斯
Owner FORD GLOBAL TECH LLC