Global Patent Index - EP 0962646 A4

EP 0962646 A4 2000-09-20 - EXHAUST GAS RECIRCULATION CONTROL VALVE DEVICE

Title (en)

EXHAUST GAS RECIRCULATION CONTROL VALVE DEVICE

Title (de)

KONTROLLVENTIL FÜR ABGASRÜCKFÜHRUNG

Title (fr)

DISPOSITIF A SOUPAPE DE COMMANDE DE RECYCLAGE DES GAZ D'ECHAPPEMENT

Publication

EP 0962646 A4 (EN)

Application

EP 97909586 A

Priority

JP 9703822 W

Abstract (en)

[origin: WO9920886A1] An exhaust gas recirculation control valve device, in which wall surfaces at an inlet of an exhaust gas passage are enhanced in anticorrosion against exhaust gases to suppress deposit of fine particules thereto and significantly reduce frequency of maintenance, and which is excellent in assembling quality and inexpensive. The exhaust gas recirculation control valve device comprises a housing (41) having therein an exhaust gas passage (33), a control valve (7) provided in the housing for controlling an amount of exhaust gases circulated in an intake pipe of an engine through the exhaust gas passage, a shield body (42) formed from a material, which is superior to the housing in anticorrosion against exhaust gases, into a cylinder having a valve seat at a tip end thereof, the valve seat abutting against the control valve, the shield body being mounted at an inlet of the exhaust gas passage to cover an inner wall surface of the inlet of the exhaust gas passage, a valve stem (23) connected to the control valve and slidably arranged relative to a slide member press fitted into the housing, a diaphragm (8) mounted to an end of the valve stem and adapted to be actuated by a pressure difference to open and close the control valve, and a negative pressure casing (14) for forming the pressure difference through the diaphragm.

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

F02M 25/07

IPC 8 full level (invention and additional information)

F02M 25/07 (2006.01)

CPC (invention and additional information)

F02M 26/55 (2016.02); F02M 26/11 (2016.02); F02M 26/68 (2016.02); F02M 26/50 (2016.02)

Citation (search report)

Designated contracting state (EPC)

DE FR GB IT

EPO simple patent family

WO 9920886 A1 19990429; EP 0962646 A1 19991208; EP 0962646 A4 20000920

INPADOC legal status


2004-05-12 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20031108

2003-03-19 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20030130

2000-09-20 [A4] SUPPLEMENTARY SEARCH REPORT

- Effective date: 20000809

2000-09-20 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A4

- Designated State(s): DE FR GB IT

1999-12-08 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19990526

1999-12-08 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB IT