Engine speed control system for a working vehicle

Details Engine speed control system for a working vehicle Engine speed control system for a working vehicle

1992-05-01

1993-06-01

Argenbright, Tony M.

Internal-combustion engines

Engine speed regulator

Idle speed control

123198, 123352, F02D 3100, F02D 3500, B60K 4128

Patent

active

052150569

ABSTRACT:
An engine speed control system for a working vehicle having an engine, and a propelling transmission and a power takeoff device driven by the engine. Engine speed is adjustable by an accelerator controlled by control signals outputted from a control unit. The control unit is connected to a clutch operation detecting switch for detecting an operative state of a power takeoff clutch for operating a power takeoff device and to a shift condition detecting switch for detecting a shift of the propelling transmission. The control unit outputs a control signal for rotating the engine at an idling speed when the propelling transmission is in neutral and the power takeoff clutch is disengaged, and a control signal for rotating the engine at a high rotating rate when the propelling transmission is in a drive transmitting position or the power takeoff clutch is engaged.

REFERENCES:
patent: 4372265 (1983-02-01), Kasiewicz
patent: 4638779 (1987-01-01), Kitada
patent: 4643146 (1987-02-01), Spriessler
patent: 4779591 (1988-10-01), Tordenmalm
patent: 4885903 (1989-12-01), Scag
patent: 4898137 (1990-02-01), Fujita et al.

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