Daniel J Moreno

US Patent:

20070251474, Nov 1, 2007

Filed:

May 1, 2006

Appl. No.:

11/415333

Inventors:

Daniel Gauthier - Clarkston MI, US
Michael Kozan - Canton MI, US
John Waller - Ann Arbor MI, US
Daniel Moreno - El Paso TX, US
Sergio Quelhas - Ann Arbor MI, US

International Classification:

F01L 1/34

US Classification:

123090170

Abstract:

A camshaft phaser system includes an oil control spool valve having two opposing springs to center the spool at a rest position to lock the phaser rotor by blocking supply/vent to both the Cand Cchambers, obviating a conventional locking pin mechanism. A double-acting solenoid actuator moves the spool to first and second positions, supplying or venting Cand Crespectively. The rotor may be locked hydraulically at any position between full advance and full retard. A system for monitoring the rotational positions of the crankshaft and camshaft includes magnets disposed on opposite sides of the shaft axis. A magnetic sensing element senses the rotational direction of the magnetic field for each position of the shaft. An engine control module uses the position signal and an algorithm to lock the rotor at a desired position.

US Patent:

20080136404, Jun 12, 2008

Filed:

Feb 11, 2008

Appl. No.:

12/069476

Inventors:

Daniel G. Gauthier - Clarkston MI, US
Michael A. Kozan - Canton MI, US
John H. Waller - Ann Arbor MI, US
Daniel J. Moreno - El Paso TX, US
Sergio Quelhas - Ann Arbor MI, US

International Classification:

G01B 7/30

US Classification:

3242072, 32420725

Abstract:

A camshaft phaser system includes an oil control spool valve having two opposing springs to center the spool at a rest position to lock the phaser rotor by blocking supply/vent to both the C1 and C2 chambers, obviating a conventional locking pin mechanism. A double-acting solenoid actuator moves the spool to first and second positions, supplying or venting C1 and C2, respectively. The rotor may be locked hydraulically at any position between full advance and full retard. A system for monitoring the rotational positions of the crankshaft and camshaft includes magnets disposed on opposite sides of the shaft axis. A magnetic sensing element senses the rotational direction of the magnetic field for each position of the shaft. An engine control module uses the position signal and an algorithm to lock the rotor at a desired position.

Address:

4991 E Harvard Ave, Clarkston, MI 48348

VIN:

1G8ZS57N97F298890

Make:

SATURN

Model:

AURA

Year:

2007