F - Mech Eng,Light,Heat,Weapons – 01 – L
Patent
F - Mech Eng,Light,Heat,Weapons
01
L
123/183
F01L 1/00 (2006.01) F01L 1/26 (2006.01) F01L 13/06 (2006.01) F02D 13/04 (2006.01) F02B 3/06 (2006.01) F02F 1/24 (2006.01) F02F 1/42 (2006.01)
Patent
CA 1164290
-15- ENGINE BRAKING APPARATUS ABSTRACT OF THE DISCLOSURE An improved compression release engine braking apparatus is provided for internal combustion engines having two exhaust valves associated with each cylinder. To maximize retarding power of a compression release engine braking apparatus for internal combustion engines it is necessary that a maximum charge of air be driven into the engine cylinder and that the exhaust valve be opened at an optimum point close to the top dead center of the piston in the cylinder. When the cylinder pressures are high, a high force is required to open the exhaust valve, such high forces subjecting the exhaust valve train parts and those constituting the compression release engine brake to elastic deformation which, in effect, increases the clearance in the exhaust valve train causing delays in the opening of the exhaust valves and reducing the time the valves are open. To deal with this problem a slave piston of the compression release brake is relocated to register with one of the two exhaust valves and a crosshead assembly in the apparatus is modified so that actuation of the exhaust valve rocker arms will open both exhaust valves in the normal manner during the fueling mode of engine operation while the slave piston of the compression release brake will open only one of the exhaust valves during the engine braking mode of engine operation to ensure opening of the one exhaust valve at an optimum point.
364806
Gutman Nathan
Jakuba Stanislav
Morse Walter H.
Jacobs Manufacturing Company (the)
Ridout & Maybee Llp
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