Patent number: 6766777
Method to ensure robust operation of a pin lock in a vane style cam phaser
Original Assignee: BorgWarner Inc.
Field of technology: Vehicles, Engines and Transportation
Patent granted on: Tue, 27 Jul 2004
Abstract
A variable camshaft timing phaser having a locking pin directly influenced by engine oil, which is not impacted by any intervening valves. The locking pin is comprised of a tapered pin, which fits into a tapered recess. The locking pin is biased towards engaging by a spring, and is retracted by oil from the engine oil supply. The locking pin remains disengaged from the tapered recess as long as the oil pump is on.