Auxiliary cam phaser hydraulic circuit and method of operation
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United States of America Patent
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N/A
Issued Date -
Sep 27, 2007
app pub date -
Mar 22, 2006
filing date -
Mar 22, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Provided is an auxiliary cam phaser hydraulic circuit for an internal combustion engine having an engine driven hydraulic pump and at least one cam phaser in fluid communication with a cam phaser control valve. The auxiliary cam phaser hydraulic circuit includes a reservoir containing fluid and an auxiliary hydraulic pump in fluid communication with the reservoir and operable to pressurize the fluid and communicate the fluid under pressure to a cam phaser feed passage. The cam phaser feed passage is in fluid communication with the cam phaser control valve, which operates to selectively and variably communicate the fluid to the cam phaser. A method of starting and operating an internal combustion engine is also provided. An internal combustion engine incorporating the auxiliary cam phaser hydraulic circuit is also disclosed.
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