Combined camshaft capable of performing secondary opening on air valve

• Main Authors: XIE FANGXI, HAN LINPEI, CUI HAO, HONG WEI, SU YAN, CHEN JING
• Format: Patent
• Language: English
• Published: 08.07.2015
• 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

The utility model discloses a combined camshaft capable of performing secondary opening on an air valve and belongs to the technical field of engines. A main cam is fixedly connected to the left end of a camshaft body through a center hole I, a two-position three-way electromagnetic valve and a sensor are fixedly connected to the right end of the camshaft body, and an auxiliary cam, a disc spring and an end face bearing are sequentially arranged on a boss of the main cam in a sleeving mode and movably connected with the main cam, wherein the right end of the end face bearing is limited through a clamping ring, and the clamping ring is clamped into a groove of the main cam. The auxiliary cam swings back and forth inside sliding block operation tracks of the main cam, in this way, the angle of secondary opening and closing on the air valve can be changed according to needs, and the combined camshaft can be suitable for adjusting secondary opening on an air inlet valve and an exhausting valve, can be installed on a multi-cylinder engine and meets the requirement for the light weight of the engine according to the design.