Global Patent Index - EP 0835986 B1

EP 0835986 B1 2001-04-11 - Drive cam for a valve-controlled internal combustion engine

Title (en)

Drive cam for a valve-controlled internal combustion engine

Title (de)

Steuernocken für eine ventilgesteuerte Brennkraftmaschine

Title (fr)

Came d'entraînement pour un moteur à combustion interne commandé par soupapes

Publication

EP 0835986 B1 (DE)

Application

EP 97115864 A

Priority

DE 19641418 A

Abstract (en)

[origin: EP0835986A1] The control cam is for an exhaust valve in a valve-controlled internal combustion engine. The modified cam profile gives an initial rapid increase (3') in acceleration of motion (3) away from the valve seat as the valve begins to open. The acceleration reaches an initial peak (3''') of approximately 40-60% before falling away (3'') to a minimum (2) before building up again (4') to a maximum of 100%. The acceleration goes negative and the valve slows to a stop and begins to close. The acceleration goes positive again as the valve slows down and comes to rest gently on its seat.

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

F01L 1/08

IPC 8 full level (invention and additional information)

F01L 1/08 (2006.01)

CPC (invention and additional information)

F01L 1/08 (2013.01); Y10T 74/2101 (2013.01)

Designated contracting state (EPC)

DE ES FR GB IT

EPO simple patent family

DE 19641418 A1 19980409; EP 0835986 A1 19980415; EP 0835986 B1 20010411; ES 2156324 T3 20010616; US 6631657 B1 20031014; WO 9815722 A1 19980416

INPADOC legal status


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2002-04-03 [26N] NO OPPOSITION FILED

2002-01-01 [REG GB IF02] EUROPEAN PATENT IN FORCE AS OF 2002-01-01

2001-07-05 [ITF] IT: TRANSLATION FOR A EP PATENT FILED

- Owner name: STUDIO JAUMANN P. & C. S.N.C.

2001-06-16 [REG ES FG2A] DEFINITIVE PROTECTION

- Document: ES 2156324 T3

2001-05-17 [REF] CORRESPONDS TO:

- Document: DE 59703347 20010517

2001-05-02 [GBT] GB: TRANSLATION OF EP PATENT FILED (GB SECTION 77(6)(A)/1977)

- Effective date: 20010411

2001-04-27 [ET] FR: TRANSLATION FILED

2001-04-11 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): DE ES FR GB IT

2000-11-22 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20001005

1998-12-30 [AKX] PAYMENT OF DESIGNATION FEES

- Free text: DE ES FR GB IT

1998-12-30 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION):

- Designated State(s): DE ES FR GB IT

1998-11-11 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19980912

1998-04-15 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE ES FR GB IT

1998-04-15 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

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