Machine element or mechanism – Gearing – Interchangeably locked
Patent
1997-07-31
1999-07-13
Jeffery, John A.
Machine element or mechanism
Gearing
Interchangeably locked
477906, 701 61, 701 64, F16H 5900
Patent
active
059211350
ABSTRACT:
A method and a circuit configuration for gear detection in a motor vehicle transmission detect a signal corresponding to an input rpm and a signal corresponding to an output rpm of the transmission. A quotient of the output rpm to the input rpm is formed. A gear that has been engaged is detected from this quotient and from a known gear ratio of the transmission. A variation over time of the ratio of the output rpm to the input rpm of the transmission is ascertained and compared with a limit value. If the limit value is exceeded, a determination is made that no gear has been engaged.
REFERENCES:
patent: 4680988 (1987-07-01), Mori
patent: 4701852 (1987-10-01), Ulveland
patent: 5239895 (1993-08-01), Kroger
patent: 5682315 (1997-10-01), Coutant et al.
Friedrich Arno
Wenzlawski Klaus
Greenberg Laurence A.
Jeffery John A.
Lerner Herbert L.
Siemens Aktiengesellschaft
Stallman Brandon C.
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