Compression brake actuation system and method

Details Compression brake actuation system and method Compression brake actuation system and method

F - Mech Eng,Light,Heat,Weapons

01

L

F01L 13/06 (2006.01) F01L 9/02 (2006.01) F02D 13/04 (2006.01)

Patent

CA 2360477

Compression brake systems using "back-fill" between combustion cylinders or requiring an exhaust valve to be opened twice during a braking cycle require brake actuation systems able to maintain control over the exhaust valve during different loading conditions. In a first opening event where a piston is at or near bottom dead center, pressures in the combustion cylinder are low. During a second opening event near top dead center pressures are higher. Movement of the exhaust valve may be slowed during the first opening event by controlling fluid leaving a second actuator volume opposite a first actuator volume providing opening force on an exhaust valve.

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