Dual spring synchronous compression type mechanical system

Abstract

The invention relates to a dual spring synchronous compression type mechanical system, which belongs to the technical field of mechanical design. The dual spring synchronous compression type mechanical system comprises an air inlet, an air outlet, an inlet valve lower section, an exhaust valve, an inlet valve upper section, a containing cavity, moving bodies, a penetrating tube, moving blocks, a connecting tube and springs, wherein the lower end surfaces of the first moving block and the second moving block are flat surfaces, the upper end surfaces of the first moving block and the second moving block are inclined surfaces, the left wall surface of the first moving body is connected with the left wall surface of the containing cavity through the first spring, and the right wall surface of the second moving body is connected with the right wall surface of the containing cavity through the second spring. When pressure in an inlet tube of an engine is higher, the first moving body is moved to the left, the second moving body is moved to the right, and the lift ranges of an inlet valve and the exhaust valve are increased. When the pressure in the inlet tube of the engine is lower, the first moving body is moved to the right, the second moving body is moved to the left, and the lift ranges of the inlet valve and the exhaust valve are reduced. The dual spring synchronous compression type mechanical system has the advantages of reasonable design and simple structure, and is suitable for an engine variable valve lift system.

Description

technical field [0001] The invention relates to an engine intake and exhaust system in the technical field of mechanical design, in particular to a double-spring synchronous compression mechanical system. Background technique [0002] The valve lift of the traditional gasoline engine is fixed and invariable, that is, there is only one cam profile of the camshaft, which makes it impossible for the lift to make the engine respond well in both high-speed and low-speed areas. The valve lift or cam profile design of a traditional gasoline engine is a balanced choice for the engine under all operating conditions. As a result, the engine can neither get the best high-speed efficiency nor the best low-speed torque, but it can get The most balanced performance under all working conditions. The adoption of variable valve lift enables the engine to obtain the required valve lift in both high-speed and low-speed areas, thereby improving the high-speed power and low-speed torque of the ...

AI Technical Summary

Problems solved by technology

However, its design is to use a hydraulic mechanism, which requires high sealing performance. If the sealing is not tight, it will easily cause liquid leakage; and because the liquid has a certain compressibility, the response speed of the valve lift change has a certain delay.

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