Compression ratio self-adaptation system

• Main Author: LONG YONGJUN
• Format: Patent
• Language: English
• Published: 11.03.2015
• Subjects: ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES; BLASTING; COMBUSTION ENGINES; CONTROLLING COMBUSTION ENGINES; CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; WEAPONS

The invention relates to a compression ratio self-adaptation system and belongs to the technical field of an internal combustion engine. The compression ratio self-adaptation system comprises a cylinder, a cylinder cover, a piston, a piston ring, a connecting rod, a volume cavity, a spring and moving elements, wherein the volume cavity is arranged in the piston; a first moving element is arranged at the left end of the lower part of the volume cavity; a second moving element is arranged at the right end of the lower part of the volume cavity; the first moving element and the second moving element are connected through the spring; outer wall surfaces of the first moving element and the second moving element are in sealing contact with the inner wall surfaces of the volume cavity; under a high-speed working condition, when pressure in a combustor is highest and combustion pressure is higher, the two moving elements are moved back to back and the volume of the combustor becomes big; under a low-speed working condition, when the pressure in the combustor is highest and the combustion pressure is lower, the two moving elements are moved face to face and the volume of the combustor becomes small. The compression ratio self-adaptation system is reasonable in structure, simple in design and fit for the optimal design for the engine compression ratio.