Internal combustion engines

Details Internal combustion engines Internal combustion engines

1979-07-06

1981-05-19

Burns, Wendell E.

Internal-combustion engines

Engine speed regulator

Responsive to deceleration mode

123397, 123198D, F02D 906, F02D 700

Patent

active

042678072

ABSTRACT:
A very heavy vehicle may tend to run away on a steep gradient and as a result the engine is liable to be overspeeded with consequential risk of damage especially to its valve mechanism. The invention aims to prevent overspeeding by providing a servo mechanism operable automatically above a predetermined engine speed to apply an exhaust brake. The servo mechanism preferably comprises a centrifugal clutch normally held disengaged by springs and disposed on a shaft driven by the engine. Angular movement of the driven member of the clutch due to its engagement by engine speed in excess of the predetermined value is limited to, say, 60.degree. by a stop, and said member is mechanically linked to the operating means of the exhaust brake.

REFERENCES:
patent: 2730090 (1956-01-01), Holl

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