Gas feeding and distribution system based on electrohydraulic control

• Main Authors: ZHONG BING, ZHANG FUWEI, LI HONGTAO, XIE FANGXI, HAN LINPEI, HONG WEI, SU YAN, WANG XINFENG, LI XIANGYU, JIANG WEI
• Format: Patent
• Language: English
• Published: 17.06.2015
• Subjects: BLASTING; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; COMBUSTION ENGINES; CONTROLLING COMBUSTION ENGINES; CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES; ENGINE PLANTS IN GENERAL; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; WEAPONS

The utility model provides a gas feeding and distribution system based on electrohydraulic control and belongs to the technical field of internal combustion engines. The inlet and the outlet of a high pressure oil pipe in the gas feeding and distribution system are communicated with an oil inlet I and a high pressure oil outlet, respectively; the inlet and the outlet of an oil return pipe I are communicated with a valve casing hole and an oil return hole I, respectively; the inlet and the outlet of an oil return pipe II are communicated with the inlet of an oil return pipe III and an oil discharge duct, respectively; the inlet of an engine oil valve oil return pipe II is communicated with an engine oil valve oil return hole II; the inlet of an engine oil valve oil return pipe I is communicated with an engine oil valve oil return hole I; the inlet and the outlet of a low pressure oil pipe are communicated with a low pressure oil inlet and a low pressure oil pipe I, respectively; the inlet of the low pressure oil pipe I and the outlet of an oil return pipe are arranged in an oil tank; the inlet of an engine oil valve oil inlet pipe and a one-way valve II are connected in series to a low pressure oil pipe II; the outlet of the engine oil valve oil inlet pipe is communicated with an engine oil valve oil inlet; a stepping motor, and sensors at a rotary outer valve core position and a cam shaft position are controlled by an electronic control unit. The gas feeding and distribution system based on electrohydraulic control is low in valve seating impact, flexible in valve closing moment and lift control, capable of realizing restrictor-free control and Miller circulation, high in reliability and low in manufacturing cost.