Method and apparatus for detecting the gear position of transmis

Details Method and apparatus for detecting the gear position of transmis Method and apparatus for detecting the gear position of transmis

1981-09-14

1984-03-27

Trafton, David L.

Boots, shoes, and leggings

123198DB, 123333, 180 701, 180179, 340 53, 340 62, G06F 1520

Patent

active

044398336

ABSTRACT:
In order to mathematically detect the gear position of a vehicle transmission system, engine speed and vehicle speed are detected. A first reference level defined by a predetermined ratio of engine speed and vehicle speed is established for determining the gear position by a mathematical operation involving the sensed engine speed and the sensed vehicle speed and the reference level. The first reference level is shifted to a second reference level in accordance with the determined gear position, thereby preventing an erroneous determination of the gear position.

REFERENCES:
patent: 4044634 (1977-08-01), Florus et al.
patent: 4100530 (1978-07-01), den Brinker et al.
patent: 4107776 (1978-08-01), Beale
patent: 4157030 (1979-06-01), Keely
patent: 4198933 (1980-04-01), Sieber et al.
patent: 4262557 (1981-04-01), Grob et al.
patent: 4375207 (1983-03-01), Sieber et al.

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