Device for preventing engine overrun

Abstract

Abstract PURPOSE:To prevent engine failure due to its overrun by judging whether an engine is in an overrun state or not by comparing a detecting signal issued from a car speed detecting means with its corresponding signal level to automatically disengage a clutch. CONSTITUTION:The output voltage (24V) of a sensing circuit 12-3 energizes a relay 13 to turn on contacts K, L. The coil M of a solenoid-operated valve 14 is turned on by turning on the contacts K, L to open a valve 14-1, and a coil N is also turned on to close a valve 14-2. Air fed from an air tank 17 passes through the valve 14-1 to push an air piston 15-1 to the right, and a hydraulic piston 15-3 therefore moves to the right to increase hydraulic operating fluid pressure, which is transmitted through a hydraulic pipe 18 to a three way joint 6 and then to a clutch sleeve cylinder 7. Thus a shift fork 8 is pushed to disengage a clutch 2.

Inventors

• 👤 Shigeo Araki
• 👤 荒木　茂雄

Bibliographic Details