Patent number: 11725546

Hybrid phaser with hydraulic lock in an intermediate position

Original Assignee: BORGWARNER INC.

Field of technology: Vehicles, Engines and Transportation

Patent granted on: Tue, 15 Aug 2023

Patent drawing


A phaser which has an offset or remote pilot valve added to the hydraulic circuit to manage a hydraulic detent switching function, in order to provide a mid-position lock for cold starts of the engine, either during cranking or prior to complete engine shutdown. The mid-position locking of the phaser positions the cam at an optimum position for cold restarts of the engine.