Fully variable electro-hydraulic valve system

• Main Authors: WANG LIFENG, WANG XIUQIANG, YI JINSHUI, SU MINGTAO, WU LONGLONG, WU BEIBEI, WANG HAOTIAN, WU PENGCHAO, WANG MENGXIAO, CONG TIANZENG
• Format: Patent
• Language: Chinese; English
• Published: 28.04.2020
• 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 invention discloses a fully variable electro-hydraulic valve system. The fully variable electro-hydraulic valve system comprises a sliding sleeve, a spiral shaft, a piston and a return spring; thesliding sleeve is fixed relative to an engine; the piston butts against a valve assembly; the spiral shaft is axially controlled by a cam surface of a camshaft; the spiral shaft is provided with a spiral groove and a blockage part; when the spiral groove communicates with a limiting oil hole, a sliding sleeve cavity communicates with a low-pressure oil way of the engine for pressure relief; a spiral shaft axial projection portion is arranged at a first end of the spiral shaft; a spiral shaft ejecting plane is arranged on the spiral shaft axial projection portion; a piston axial projection portion is arranged at the end, opposite to the spiral shaft, of the piston; and a piston ejecting plane is arranged at the head portion of the piston axial projection portion. The fully variable electro-hydraulic valve system s