초록 ▼

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 i

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.

대표청구항 ▼

An apparatus for detecting the gear position of a transmission system having a manually operable gear selection mechanism in a vehicle having an engine controlled by an accelerator pedal, comprising: (a) means for sensing the engine speed N; (b) means for sensing the vehicle speed V; said vehicle ha

An apparatus for detecting the gear position of a transmission system having a manually operable gear selection mechanism in a vehicle having an engine controlled by an accelerator pedal, comprising: (a) means for sensing the engine speed N; (b) means for sensing the vehicle speed V; said vehicle having a first characteristic N/V ratio corresponding to a first gear position of said transmission system and second characteristic N/V ratio corresponding to second gear position of said transmission system; (c) reference level establishing means for establishing a first reference level defined by a first predetermined ratio of engine speed to vehicle speed; (d) means, independent of said manually operable gear selection mechanism and accelerator pedal, for determining which of said first and second gear positions said transmission is in utilizing a mathematic operation involving the sensed engine speed N, the sensed vehicle speed V, and the first reference level; and (e) means, responsive to a determination of said first gear position by said determining means, for shifting the first reference level to a second reference level defined by a second predetermined ratio of engine speed to vehicle speed, said determining means being responsive to said shifting means for determining which of said first or second gear positions said transmission is in utilizing a mathematical operation involving the sensed engine speed N, the sensed vehicle speed V, and the second reference level.