Internal-combustion engines – Engine speed regulator – Responsive to deceleration mode
Patent
1985-08-09
1986-06-03
Cuchlinski, Jr., William A.
Internal-combustion engines
Engine speed regulator
Responsive to deceleration mode
123348, 123 9012, 123 9016, 123198DB, F02D 1304
Patent
active
045923191
ABSTRACT:
Process and apparatus for the compression release retarding of a multi-cylinder four cycle internal combustion engine are provided. The process provides a compression release event and a bleeder event or a second compression releaser event for each engine cylinder during each complete engine cycle while employing only one intake valve opening per engine cycle. In accordance with one embodiment of the invention the normal motion of the exhaust valve is disabled and replaced with an opening of the exhaust valve at about the top dead center position of the engine piston following the compression stroke; maintaining the exhaust valve in the open position during the expansion stroke; partially closing the exhaust valve during the exhaust stroke; and fully closing the exhaust valve during the intake stroke. In accordance with another embodiment of the invention, the normal intake valve opening is delayed and the normal motion of the exhaust valve is disabled and replaced with an opening of the exhaust valve at about the top dead center position of the engine piston following the compression stroke; maintaining the exhaust valve in the open position during the expansion stroke; closing the exhaust valve at the end of the expansion stroke; and opening the exhaust valve briefly at about the next top dead center position of the engine piston. The apparatus includes hydraulic and mechanical means to disable or delay the exhaust and intake valves and hydraulic, mechanical and electrical means to manipulate the exhaust and intake valves as required to perform the process.
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Cuchlinski Jr. William A.
Degling Donald E.
The Jacobs Manufacturing Company
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