Global Patent Index - EP 0821141 B1

EP 0821141 B1 20010530 - Internal combustion engine valve drive with rocker arm supported by eccentric shaft

Title (en)

Internal combustion engine valve drive with rocker arm supported by eccentric shaft

Title (de)

Ventiltrieb einer Brennkraftmaschine mit sich an einer Exzenterwelle abstützenden Schwinghebeln

Title (fr)

Commande de soupape pour moteur à combustion interne comprenant un levier en appui sur arbre à excentriques

Publication

EP 0821141 B1 20010530 (DE)

Application

EP 97110694 A 19970701

Priority

DE 19629881 A 19960724

Abstract (en)

[origin: EP0821141A1] The mechanism is supported on an eccentric shaft (11) which is driven by cams and is formed as pivot levers acting as transmission members. The valve lift is variable through twisting of the eccentric shaft which is provided with a positioning motor. A force accumulator component which is formed as a spring part (10) engages on the shaft, supporting the motor by a desired twisting of the shaft in the direction of a larger valve lift. The force accumulator component tries to move the eccentric shaft without the effect of the positioning motor into such a position, thus producing a larger valve lift than the minimal possible. The spring part may be formed as a twisted rotary rod sprung held inside the hollow eccentric shaft.

IPC 1-7

F01L 13/00

IPC 8 full level

F01L 13/00 (2006.01)

CPC (source: EP)

F01L 13/0026 (2013.01); F01L 13/0063 (2013.01); F01L 2001/0475 (2013.01); F01L 2820/032 (2013.01)

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family (publication)

EP 0821141 A1 19980128; EP 0821141 B1 20010530; DE 19629881 A1 19980129; DE 59703649 D1 20010705

DOCDB simple family (application)

EP 97110694 A 19970701; DE 19629881 A 19960724; DE 59703649 T 19970701