Centrifugal automatic control type variable exhaust valve structure

Abstract

The invention provides a centrifugal automatic control type variable exhaust valve structure. The centrifugal automatic control type variable exhaust valve structure comprises an exhaust port of an air cylinder, and the exhaust port can be closed and opened by an exhaust valve; the exhaust valve is connected with a control rod, and the diameter of the exhaust port sealed by the exhaust valve can be changed by rotating the control rod; the outer side of the air cylinder is provided with a cavity for storing a centrifugal adjuster; the centrifugal adjuster comprises a centrifugal derivation partand a combining pushing part; the centrifugal derivation part can change the transmission direction of the combining pushing part and is in linkage with an engine; and the combining pushing part is connected with the control rod and controls the control rod to rotate forwards and reversely according to the position of the centrifugal derivation part. According to the centrifugal automatic controltype variable exhaust valve structure, the small-size mechanical structure is adopted to automatically control and correspond to the position of the exhaust valve, pull rods are linearly controlled to rotate the angle of the exhaust valve, thus, the exhaust port is closed or opened, and the compression ratio and the engine performance are improved.

Description

technical field [0001] The invention relates to the field of engines, in particular to a centrifugal automatic control variable exhaust valve structure. Background technique [0002] The whole process of the engine exhausting exhaust gas and filling it with fresh air or combustible mixture is called the ventilation process. The amount of air or mixture charged into the cylinder per unit time is a factor that determines the power output of the engine. It is also an extremely important link to determine engine power and economy. [0003] In the patent number CN201810267355.5, a two-stroke variable exhaust phase device is disclosed. The principle is to identify the rotational speed through a sensor. When the rotational speed is low, the caliber of the exhaust valve is controlled to decrease. When the rotational speed is high, the caliber of the exhaust valve is controlled. increase. When the engine is in low-speed and high-speed working conditions, it can work at the best ex...

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Problems solved by technology

[0004] However, the existing technology uses sensors to control the exhaust valve, and the electronic controller has instability problems in about three years. Therefore, we need to design a structure for purely mechanical recognition and control of the exhaust valve, and this structure cannot be compared A large change in the volume of the engine itself requires a stable and replaceable electronic controller

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