Intake valve structure and engine

Abstract

The invention relates to the technical field of engines, and discloses an intake valve structure and an engine. The intake valve structure comprises a valve rod, a valve retainer and a flow guide part, and the valve rod is slidably arranged in an intake duct; the valve retainer is arranged at one end of the valve rod and can block or communicate the air cylinder and the air inlet channel. The flow guide part is arranged on the side, close to the valve rod, of the valve retainer, the flow guide part is provided with a flow guide face, when the air cylinder and the air inlet channel are communicated through the valve retainer, air can flow to the air cylinder from the air inlet channel through the flow guide face, and the extending direction of the flow guide face and the tangential direction of the circumference of the air cylinder are the same or form an included angle. The flow guide piece is arranged on the side, close to the valve rod, of the valve retainer, when the air inlet channel and the air cylinder are communicated through the valve retainer, air can enter the air cylinder in the direction which is the same as or forms the included angle with the tangential direction of the circumference of the air cylinder, a strong air inlet vortex is formed under the constraint of the inner wall of the air cylinder, mixing of fuel and air is enhanced, and the fuel efficiency is improved. And the macroscopic and microscopic airflow movement intensity in the cylinder when the top dead center is compressed is improved.

Description

technical field [0001] The present invention relates to the technical field of engines, in particular to an intake valve structure and an engine. Background technique [0002] Engines typically improve their economy, power, and emissions by organizing the intake swirl. At present, most of the schemes for improving the swirl ratio in the cylinder are complicated in structure and difficult to process. [0003] Therefore, an intake valve structure and an engine are urgently needed to solve the above problems. SUMMARY OF THE INVENTION [0004] Based on the above, the purpose of the present invention is to provide an intake valve structure and an engine, which are simple in structure and can form a strong intake vortex, so that the mixing of fuel and air is more sufficient. [0005] For achieving the above object, the present invention adopts the following technical solutions: [0006] An intake valve structure comprising [0007] The valve stem is slidably arranged in the ...

AI Technical Summary

Problems solved by technology

At present, most of the schemes for increasing the swirl ratio in the cylinder have complex structures and are not easy to process. The effect of improving the swirl ratio is limited, and it is difficult to put them into practical application.

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