VALVE GEAR OF ENGINE

• Main Authors: TAKAGI AKITOMO, KASHIWABARA HISASHI, HANEHARA TOSHISUKE, NODA AKIHIRO
• Format: Patent
• Language: English; Japanese
• Published: 08.12.2014
• Subjects: BLASTING; CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES; ENGINE PLANTS IN GENERAL; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; WEAPONS

PROBLEM TO BE SOLVED: To reduce the number of components, and make a valve gear in a cam axial direction compact while spontaneously and continuously switching a cam in a valve gear of an engine in which a cam for opening/closing a valve can be switched.SOLUTION: One cam element part comprises a slope part for forcedly moving an operation member to a non-actuation position after movement of a cam element part due to an end face cam is completed by slide-contacting a contact part provided on the operation member while the operation member is at an actuation position. The other cam element part is configured so that the end face cam and the slope part of the cam element part are at least partially overlaid in an axial direction when both cam element parts are adjacent to each other. 【課題】弁を開閉させるカムの切り換えが可能とされたエンジンの動弁装置において、部品点数を削減すると共に、カムの切り換えを瞬時に連続して行いながら、カム軸方向のコンパクト化を図ることを課題とする。【解決手段】一方のカム要素部は、操作部材が作動位置にある状態で操作部材に設けた当接部に摺接することにより、カム要素部の端面カムによる移動が終了したのちに操作部材を不作動位置に強制移動させるスロープ部を備え、他方のカム要素部は、両カム要素部の近接時に、カム要素部の端面カムとスロープ部が軸方向に少なくとも一部重複するように構成されている。【選択図】図３