Device and method for detection of a gear position in an...

Details Device and method for detection of a gear position in an... Device and method for detection of a gear position in an...

2007-05-22

2007-05-22

Lorence, Richard M. (Department: 3681)

192 clutches and power-stop control

Transmission control and clutch control

Common control

C192S003630, C074S336001, C074S745000, C701S064000

Reexamination Certificate

active

11051156

ABSTRACT:
A gear position in an automotive gearbox is detected on the basis of measuring a value indicative of the speed of a rotating shaft between an engine and the gearbox, and a value indicative of the speed of an output shaft from the gearbox, and calculating a quotient of these two speeds. If for a predetermined period of time the quotient is between upper and lower limits about a quotient value pertaining to the respective gear position, it is decided that a gear position obtains. Through information about a selected split position of a split gear it is as possible gear position rule out all gear positions which do not correspond to the selected split position, thereby enabling said upper and lower limits to be raised and lowered respectively for the remaining gear positions which correspond to the selected split position.

REFERENCES:
patent: 4320381 (1982-03-01), Olivier
patent: 5537894 (1996-07-01), Chan
patent: 5921135 (1999-07-01), Friedrich et al.
patent: 08159258 (1996-06-01), None

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