Gearshift selection system for a power-assisted transmission
AssigneeWABCO Westinghouse Fahrzeugbremsen GmbH
InventorAlfred Klatt
Life of this patent
Estimating the term…
Abstract
A vehicle gearshift selection system for a multiple-speed power-assisted transmission having a gearshift lever which is shiftable into a single shift-up position or a single shift-down position. A gear sensor for monitoring the position of the gearshift lever and connected to an evaluation control circuit. The electronic evaluation control circuit is connected to the multiple-speed power-assisted transmission and receives signals concerning the prevailing driving conditions of the vehicle for engaging an optimum higher gear when the gearshift lever is shifted-up and for engaging an optimum lower gear when the gearshift lever is shifted-down.
Claims14
A gearshift selection system for a multiple-speed power-assisted transmission comprising, a gearshift lever means having a single shift-up position and a single shift-down position, a gear sensor means for sensing the position of said gearshift lever means, and an evaluation control circuit means for evaluating the prevailing driving conditions of a vehicle and for shifting the multiple-speed power-assisted transmission into an appropriate gear in accordance with the driving conditions when said gearshift lever means is shifted to the shift-up or shift-down position, said evaluation control circuit means produces an output signal for energizing a latching means which allows said gearshift lever means to be further shifted beyond the shift-up or shift-down position to signify the appropriate gear is engaged.
A gearshift control arrangement comprising, a gearshift lever means connected to a gear sensor means, said gear sensor means connected to an evaluation control circuit means, said evaluation control circuit means connected to a power-assisted transmission which is driven by an internal combustion engine, a first sensor means for measuring the output speed of said power-assisted transmission, a second sensor means for monitoring which gear of said power-assisted transmission is presently engaged, signals representing the prevailing driving conditions fed to said evaluation control circuit means, said evaluation control circuit means connected to a stopping means which limits the movement of said gear-shift lever means between a shift-up position and a shift-down position and causing said power-assisted transmission to engage an optimum gear in accordance with the prevailing driving conditions when said gearshift lever means is moved to the shift-up and shift-down positions and for unlatching said stopping means for permitting said gearshift lever means to be moved beyond the shift-up and shift-down positions to acknowledge engagement of the optimum gear.
Dependencies are inferred from the claim text.