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Transmission oil temperature estimation systems and methods

A technique for transmission oil, oil temperature, applied to elements with teeth, transmission controls, belts/chains/gears, etc.

Active Publication Date: 2012-05-09
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The coefficient determination module changes the filter coefficients based on the valve body oil temperature signal

Method used

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  • Transmission oil temperature estimation systems and methods
  • Transmission oil temperature estimation systems and methods
  • Transmission oil temperature estimation systems and methods

Examples

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Embodiment Construction

[0044] The following description is merely exemplary in nature and in no way intended to limit the invention, its application or uses. For purposes of clarity, the same reference numbers will be used in the drawings to identify similar elements. As used herein, the phrase at least one of A, B, and C should be construed to mean a logical (A or B or C), using a non-exclusive logical or. It should be understood that steps within a method may be executed in different order without altering the principles of the present invention.

[0045] As used herein, the term "module" may mean, include, or be part of: an Application Specific Integrated Circuit (ASIC), an electronic circuit, a combinational logic circuit, a Field Programmable Gate Array (FPGA), an A processor (shared, dedicated or group), other suitable components providing the described functionality; or a combination of some or all of the above - such as a system-on-a-chip. The term "module" may include memory (shared, dedi...

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Abstract

The invention relates to transmission oil temperature estimation systems and methods, and concretely provides a system for a vehicle. The system for a vehicle includes a filter module and a coefficient determination module. The filter module generates a valve body oil temperature signal as a function of a transmission oil temperature signal, the valve body oil temperature signal, and a filter coefficient. The coefficient determination module varies the filter coefficient based on the valve body oil temperature signal. The transmission oil temperature signal corresponds to a first temperature of transmission oil measured at a location between a torque converter and a variable bleed solenoid (VBS). The valve body oil temperature signal corresponds to a second temperature of transmission oil provided to a clutch of a transmission from a valve body.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Application No. 61 / 378,163, filed August 30, 2010. The entire disclosure of the above application is hereby incorporated by reference into this application. technical field [0003] This invention relates to vehicle transmissions, and more particularly to clutch-to-clutch transmissions. Background technique [0004] The background description provided herein is for the purpose of generally presenting the context of the disclosure. To the extent described in this Background section, the work of the presently named inventors, and those aspects of that description that may not have constituted prior art at the time of filing, are neither expressly nor implicitly considered to be part of the invention current technology. [0005] The engine produces torque, which is output to the transmission. A vehicle's automatic transmission may include a plurality of fluid-cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H59/72F16H61/4008
CPCF16H59/72F16H61/0204F16H61/061
Inventor M. D. 基利塞夫斯基
Owner GM GLOBAL TECH OPERATIONS LLC
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