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Patent Searching and Data


Title:
TRANSMISSION INPUT SHAFT SPEED MEASURING ASSEMBLY
Document Type and Number:
WIPO Patent Application WO2005012918
Kind Code:
A3
Abstract:
A device for sensing the input shaft speed of an automotive automatic transmission that is driven by the engine through the fluid coupling of a torque converter. The speed sensor device includes circumferentially spaced markings about the transmission input shaft and a speed sensor that is placed at close proximity to the circumferentially spaced markings through a hole in the torque converter stator shaft. An electronic control unit (ECU) analyzes the sensor output signal and in the case of an active speed sensor it also functions as its power source. During vehicle operation, the transmission input shaft rotates the target wheel in front of the speed sensor causing modulation of its output signal. The electronic control unit analyzes the signal modulation and calculates the input shaft rotational speed. A variety of sensor/target-wheel options and sensor mounting techniques could be used depending on the application constraints.

Inventors:
BURNS JAMES J
DENNY WAYNE V
JOKI MARK A
LACROIX MARK E
ODEGARD BRIAN THOMAS
SANTOS ALFRED JOHN
VARONIS ORESTES J
Application Number:
PCT/US2004/024156
Publication Date:
August 11, 2005
Filing Date:
July 26, 2004
Export Citation:
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Assignee:
TIMKEN US CORP (US)
International Classes:
F16H59/42; G01P1/02; G01P1/04; G01P3/487; G01P3/488; (IPC1-7): G01P3/487; F16H59/38; F16H59/42; G01P1/04
Foreign References:
US20030109346A12003-06-12
US6538426B12003-03-25
DE10017542A12001-10-11
US5157966A1992-10-27
US5269201A1993-12-14
US4934501A1990-06-19
DE19826068A11999-12-16
EP0213732A11987-03-11
US4002937A1977-01-11
US4911000A1990-03-27
Other References:
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 08 30 August 1996 (1996-08-30)
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