| 摘要 |
<p>The invention is applicable to an internal combustion engine of the four-stroke cycle type equipped with a compression release engine retarder capable of producing one compression release event and one bleeder retarding event in each cylinder during every two revolutions of the engine crankshaft. This is accomplished by a novel articulated rocker arm assembly (26) including a rocker member (134) and a latch member (140) in which the rocker member (134), engaged by the exhaust pushtube, is disengaged from the latch member (140), which acts against the crosshead (32), after a compression release event has occurred, but remains engaged if a compression release event does not occur. When the latch member (140) is disengaged from the rocker member (134), the exhaust valves are held in a partially open position to produce a bleeder retarding event. A trigger valve actuated by the exhaust pushtube and rocker member vents the retarder high pressure hydraulic system to initiate the bleeder retarding event.</p> |
