Engine control system

Details Engine control system Engine control system

2011-05-31

2011-05-31

Cronin, Stephen K (Department: 3747)

Internal-combustion engines

Engine speed regulator

Having condition responsive means with engine being part of...

C123S319000, C123S349000, C123S363000

Reexamination Certificate

active

07950366

ABSTRACT:
An engine control device includes a governor lever, a centrifugal governor, a control lever operated to oscillate between a low-speed position and a high-speed position, and a governor spring expandedly provided between the control lever and the governor lever. An automatic choke device is connected to a choke valve of a carburetor. A play is provided between the governor lever and the governor spring. The play holds the governor spring in a free state during rotation of the control lever from the low-speed position to the high-speed position by a predetermined angle. A subsidiary spring is provided between a fixed structure and the governor lever so as to constantly urge the governor lever in a direction to open the throttle valve. A spring constant of the subsidiary spring is smaller than that of the governor spring. Thus, there is provided the engine control system with the automatic choke device, which can meticulously control an air/fuel ratio from start of an engine to under-load operation of the engine in accordance with increase and decrease in temperature of the engine.

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