US 5,174,172 A · Speed change gear shifting system for automotive vehicle

Abstract

A gear shifting system for an automotive vehicle equipped with an internal combustion engine comprises a load sensor for sensing the shift load generated by a shifting motion of a driver or a rider, a power adjusting system for adjusting the engine power of the internal combustion engine, and a control unit for controlling the power adjusting system. The control unit is actuated in response to a signal from the load sensor when the sensed load is equal to or greater than a predetermined value, and outputs a control signal to the power adjusting system so as to adjust the engine power. The load sensor is assembled on a linkage system connected between a shift shaft of the power transmission and the shift pedal, so that the load sensor can detect a stretching load or a depressing load caused by shifting operation in the shift-up or shift-down mode, and for differentiating between them.

Claims13

Dependent claims

An automatic gear shifting system for an automotive vehicle having an internal combustion engine and a manual shifter for shifting the transmission between a plurality of geared orientations, the system comprising:

(a) a load sensor for sensing the load applied to the shifter by a user, and for generating a signal in response thereto;
(b) power adjusting means operably associatable with the engine for adjusting the power thereof;
(c) a control unit operably associated with said sensor and said power adjusting means for controlling operation of said power adjusting means, said control unit includes first means for causing a control signal to be outputted to said power adjusting means for controlling operation thereof when the load sensor signal is equal to or greater than a first predetermined value;
and
(d) said control unit further includes means for comparing the rate of increase in the load applied to the shifter and for initiating a shift operation control process for the engine when said comparing means determines that the rate of increase of the shifter load exceeds a second predetermined value.

2 more elements

A gear shifting system for a vehicle, comprising:

(a) a vehicle having an engine, a transmission with a plurality of geared orientations, and a manually operable shifter for shifting the transmission between the orientations;
(b) a load sensor operably associated with said shifter for sensing the load applied to said sensor by a user, and for generating a signal in response thereto;
(c) means operably associated with said engine for adjusting the power thereof;
(d) a control unit operably associated with said sensor and with said adjusting means for controlling operation of said adjusting means, said control unit includes first means for causing a control signal to be outputted to said adjusting means for causing the power of said engine to be adjusted in response thereto when the load sensor signal is equal to or greater than a first predetermined value;
and
(e) said control unit further includes means for comparing the rate of increase in the load applied to said shifter and for initiating a shift operation control process for said engine when said comparing means determines that the rate of increase of the load on said shifter exceeds a second predetermined value.

3 more elements

Dependencies are inferred from the claim text.

Speed change gear shifting system for automotive vehicle

Life of this patent

Speed change gear shifting system for automotive vehicle

Life of this patent

Abstract

Claims13