Internal combustion piston engine with engine braking by opening of exhaust valves
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United States of America Patent
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Aug 25, 2015
Grant Date -
Aug 25, 2011
app pub date -
Feb 23, 2011
filing date -
Feb 23, 2010
priority date (Note) -
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Abstract
An internal combustion engine including a piston in a cylinder, a cylinder head closing the cylinder, having intake and exhaust channels controlled by at least one intake and exhaust valve. The valves are actuable by a rocker arm or finger lever driven by a camshaft. A brake control device is provided having a hydraulic adjusting piston that opens the exhaust valve additionally and intermittently, a pressure source for hydraulic fluid is associated with the adjusting piston, and the supply to the adjusting piston is controlled by an electrically operable switching valve. A compression relief cam per cylinder/piston assembly is arranged on the camshaft, with the cam being operatively connected to a compression relief rocker arm or finger lever, and the adjusting piston is configured as a coupling pin for connecting the compression relief rocker arm or finger lever, to the rocker arm or finger lever of the exhaust valve.
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