EP 0717174 A1 19960619 - Valve operating system for internal combustion engine
Title (en)
Valve operating system for internal combustion engine
Title (de)
Ventilantriebssystem für eine Brennkraftmaschine
Title (fr)
Système de commande de soupape pour moteur à combustion interne
Publication
Application
Priority
- JP 33259194 A 19941212
- JP 2112995 A 19950112
- JP 4624195 A 19950210
Abstract (en)
In a valve operating system for an internal combustion engine having a rocker arm 12 permitting alteration of lift timing of valve 1 by shifting the rocking fulcrum, a roller for attaining a rolling contact is provided at least at one of the contacting positions on the driving force-delivering way between a cam for providing a driving force and a valve. Thus, a force necessary for driving the cam can be reduced even with a multi-cylinder internal combustion. In addition, one contact surface on the driving force-delivering way is made a circular surface with the center of the shaft 8 of the cam 9 as its center. In altering the relation between the valve-lifting degree and lift timing, the rocking fulcrum 15C of the second rocker arm 12 is properly shifted in the direction shown by the arrow A or B. The above-described circular surface serves for the rocker arm 6 not to be shifted upon alteration described above. An increase in surface-to-surface pressure per unit area at the contact surface can be avoided by employing such structure that the cam 9 and the second rocker arm do not axially deviate from each other. Employment of a mechanically strong mechanism using gears or the like as a mechanism for controlling the position of said rocking fulcrum 15C. <IMAGE>
IPC 1-7
IPC 8 full level
F01L 13/00 (2006.01)
CPC (source: EP)
F01L 1/205 (2013.01); F01L 13/0021 (2013.01); F01L 13/0063 (2013.01); F01L 1/20 (2013.01); F01L 2305/00 (2020.05); F01L 2820/032 (2013.01); F01L 2820/034 (2013.01)
Citation (applicant)
JP S6453009 A 19890301 - HONDA MOTOR CO LTD
Citation (search report)
- [XA] WO 9413935 A1 19940623 - BAYERISCHE MOTOREN WERKE AG [DE], et al
- [A] DE 2256093 A1 19740522 - DAIMLER BENZ AG
- [A] FR 2357731 A1 19780203 - CHRYSLER FRANCE [FR]
- [A] DE 4243169 C1 19940526 - DAIMLER BENZ AG [DE]
- [A] DE 2629554 A1 19780112 - DAIMLER BENZ AG
Designated contracting state (EPC)
DE GB
DOCDB simple family (publication)
DOCDB simple family (application)
EP 95119507 A 19951211