Global Patent Index - EP 1046793 A2

EP 1046793 A2 2000-10-25 - Variable cam timing system and method

Title (en)

Variable cam timing system and method

Title (de)

Variable Ventilsteuerungseinrichtung und Verfahren

Title (fr)

Dispositif de calage de soupape variable et méthode

Publication

EP 1046793 A2 (EN)

Application

EP 00302306 A

Priority

US 29552599 A

Abstract (en)

A bearing secured to the engine supports the cam shaft. The bearing has an inlet and two outlets for pressurized fluid. One outlet is associated with the relatively advancing cam timing and the other is associated with the relatively retarding cam timing. A solenoid valve routes the fluid from the inlet to one of the outlets. The fluid is communicated by a bridge (177) which has holes and conduits. Pressurized fluid is received by a hole (190) from the engine (10). The hole communicates with a pair of ports (191,192) using a pair of solenoid valves (184,185) held by the bridge.

An apparatus and method for supplying pressurised fluid to a variable cam timing phasing unit. A bearing is secured to the engine for rotatably supporting the cam shaft. The bearing has an inlet for pressurised fluid and a pair of outlets for the pressurised fluid. One of the outlets is associated with relatively advancing cam timing and the other of the outlets is associated with relatively retarding cam timing. A solenoid valve selectively routes pressurised fluid between the inlet and one of the outlets. <IMAGE>

IPC 1-7 (main, further and additional classification)

F01L 1/34; F01L 1/344

IPC 8 full level (invention and additional information)

F01L 1/34 (2006.01)

CPC (invention and additional information)

F01L 1/34 (2013.01); F01L 2001/0476 (2013.01); F01L 2001/34496 (2013.01)

Citation (applicant)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 1046793 A2 20001025; EP 1046793 A3 20020821

INPADOC legal status


2003-05-02 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20021001

2002-08-21 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A3

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2002-08-21 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI

2002-08-21 [RIC1] CLASSIFICATION (CORRECTION)

- Free text: 7F 01L 1/34 A, 7F 01L 1/344 B, 7F 01M 9/10 B, 7F 01L 1/053 B, 7F 01M 11/02 B, 7F 01L 1/02 B, 7F 02D 13/02 B

2000-10-25 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2000-10-25 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI