Decompression engine brake device of automotive internal combust

Details Decompression engine brake device of automotive internal combust Decompression engine brake device of automotive internal combust

1998-04-17

2000-03-07

Kwon, John

Internal-combustion engines

Engine speed regulator

Responsive to deceleration mode

123 9016, 123198F, F02D 1304

Patent

active

060326433

ABSTRACT:
A decompression engine brake device is incorporated with an internal combustion engine. The device comprises an exhaust valve arranged to open and close an exhaust port of a combustion chamber of the engine. A valve stem extends from the exhaust valve. A valve lifter is slidably disposed in a cylinder head of the engine. The valve lifter has the valve stem contacting thereto. An exhaust cam disposed about an exhaust cam shaft is operatively engageable with the valve lifter to actuate the exhaust valve in accordance with a contour of the exhaust cam. An engine brake cam is defined by the exhaust cam. A hydraulically operating device is employed for inducing an operative engagement between the engine brake cam with the valve lifter thereby to actuate the exhaust valve in accordance with a contour of the engine brake cam.

REFERENCES:
patent: 5103779 (1992-04-01), Hare, Sr.
patent: 5163389 (1992-11-01), Fujikawa et al.
patent: 5287830 (1994-02-01), Dopson et al.
patent: 5743226 (1998-04-01), Tohdoh et al.
patent: 5832884 (1998-11-01), Haas et al.

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