公开(公告)号：DE602005000504D1

公开(公告)日：2007-03-15

申请号：DE602005000504

申请日：2005-09-26

Applicant: BORGWARNER INC

Inventor： SMITH FRANKLIN R ,  WING BRAMAN ,  CHAPMAN PETER

IPC: F01L1/344

Abstract: A spool valve (204) for variable cam timing phaser comprising a spool (209), a plurality of check valves (228a,b) and passages (212,213) from the advance chamber (208) and the retard chamber (210) to a port in the spool valve. The spool (209) having at least two lands (209a,b) separated by a central spindle, slidably mounted within a bore. When the spool is in the first position, fluid from the advance chamber flows through the passage and the port to the bore surrounding the central spindle of the spool valve and through a check valve and port to the passage to the retard chamber. When the spool is in the second position, fluid from the retard chamber flows through the passage and the port to the bore surrounding the central spindle of the spool valve and through a check valve and port to the passage to the advance chamber.

公开(公告)号：DE60027259T2

公开(公告)日：2006-08-31

申请号：DE60027259

申请日：2000-12-15

Applicant: BORGWARNER INC

Inventor： SIMPSON ROGER T ,  SMITH FRANKLIN R

IPC: F01L1/34 ,  F01L1/344 ,  F02D13/02

公开(公告)号：DE60300177T2

公开(公告)日：2005-06-23

申请号：DE60300177

申请日：2003-02-12

Applicant: BORGWARNER INC

Inventor： SIMPSON ROGER ,  SMITH FRANKLIN R

IPC: F01L1/34 ,  F01L1/352

Abstract: A phaser (25) for adjusting the timing between a camshaft (17) and a crankshaft. The phaser consists of an outer housing (12) having internal (9) and external (10) teeth and an inner housing connected to the camshaft. The outer teeth couple to the cam drive - the timing chain (11), timing belt or timing gears. A worm mounted (13) on the inner housing is meshed with the internal teeth of the outer housing. The worm gear is connected to one or two drive wheels (16), which are rotated by contact with stationary plates (41,44). The plates are moved by electromagnetic coils (21,22) to contact the drive wheel or wheels, and turn them in one direction or the other. The actuators are activated by an engine control unit. The plates can be mounted concentrically on one side of the phaser, or on opposite sides.