Velocity control of exhaust valve actuation

申请公布号：US2007006829(A1)

申请号：US20050174883

申请日期：2005.07.05

申请公布日期：2007.01.11

申请人：

ABRAM KWIN;CALLAHAN JOSEPH

发明人：ABRAM KWIN;CALLAHAN JOSEPH

分类号：F01L9/04

主分类号：F01L9/04

摘要：An exhaust valve assembly includes a valve body supported on a shaft for rotation within an exhaust component. The shaft is coupled to a solenoid with a linkage assembly. A controller controls the solenoid to rotate the shaft via the linkage assembly. The solenoid includes a plunger that moves between an actuation position and a release position. The controller utilizes pulse width modulation to control actuation and release of the plunger. This significantly reduces operational noises generated as the solenoid is moved between the actuation position and the release position.

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