F - Mech Eng,Light,Heat,Weapons – 01 – L
Patent
F - Mech Eng,Light,Heat,Weapons
01
L
123/183, 123/186
F01L 9/02 (2006.01)
Patent
CA 1156526
ENGINE BRAKING APPARATUS ABSTRACT Pressure relief apparatus for an internal combustion engine compression relief engine brake is dis- closed. Normally an existing pushrod is used to drive a master piston which in turn controls the motion of a slave piston which opens an engine exhaust valve. The problem of assigning such additional function to the pushrod is that an increased load may be experienced which may exceed the design capacity of the pushrod. The invention solves this problem by providing a bi-stable relief valve located in a high pressure hydraulic fluid circuit which interconnects the slave and master pistons together with damping means adapted to damp out rapidly the oscillations of the valve during the period of its opening so as to maximize the flow of hydraulic fluid through the bi-stable valve and minimize the time required to relieve the pressure in the high pressure hydraulic system of the compression relief engine brake. The damping means comprise a spring controlled valve guide which inhibits premature reseating of the bi-stable valve and maximizes the average opening of the valve during its operating period.
364087
Mccarthy Donald J.
Quenneville Raymond N.
Sickler Kenneth H.
Jacobs Manufacturing Company (the)
Ridout & Maybee Llp
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