Push cam type internal combustion engine without side pressure

Abstract

The invention relates to a non-side pressure push rod cam combustion engine, which transmits power of pistons to a main cam fixed on a main shaft by a push rod for output, wherein one end of the push rod is connected with hinges of the pistons, and the other end of the push rod is provided with a cam roller and a push rod roller; the cam roller is inserted into a cam-shaped groove on the main cam; the push rod roller is arranged inside a guide groove, so as to drive the push rod to move along the guide groove and make the guide groove bear the circumferential component force of the acting force of the main cam on the push rod, thereby the side pressure between the pistons and the cylinder walls is zero; cylinders are uniformly distributed on the circumference of the main cam and symmetrical with the axle center of the main cam; the acting force of all the pistons on the main cam is completely balanced; and a duplex inner cam which is fixed on the main shaft is used for controlling inlet valves and exhaust valves of all the cylinders. Compared with the prior combustion engine, the non-side pressure push rod cam combustion engine saves a crank-link mechanism, a distribution timing gear mechanism and so on, and has the characteristics of simple structure, small axial dimension, no side pressure, small abrasion, long service life, low vibration and noise, stable operation, large power, high transmission efficiency and so on.

Description

technical field [0001] The invention relates to the reciprocating internal combustion engine technology, in particular to the internal combustion engine technology which converts the reciprocating motion of the cylinder piston of the internal combustion engine into the rotary motion of the power output main shaft. Background technique [0002] Existing reciprocating four-stroke internal-combustion engine utilizes the crank-link mechanism to convert the reciprocating linear motion of the piston into the rotary motion of the crankshaft to output motion and power. There is following defective in the internal combustion engine of this structure type: [0003] First: Since the movement of the connecting rod is a periodic plane movement, a large periodical alternating side pressure is generated between the piston and the cylinder wall, thereby aggravating the wear of the cylinder wall and piston (piston ring), shortening the life of the internal combustion engine, and aggravating ...

AI Technical Summary

Problems solved by technology

[0003] First: Since the movement of the connecting rod is a periodic plane movement, a large periodical alternating side pressure is generated between the piston and the cylinder wall, thereby aggravating the wear of the cylinder wall and piston (piston ring), shortening the life of the internal combustion engine, and aggravating Wear consumes more power than normal, making the transmission of the internal combustion engine less efficient

[0004] Second: Due to the eccentricity of the mass of the crankshaft and other parts, the planar movement of the connecting rod group, and the unbalanced force of the parts, etc., resulting in a large final shaft force, vibration and noise

In addition, in order to make the intake valve and exhaust valve open and close in a timely manner, a valve timing mechanism is usually used, which makes the internal combustion engine have a large number of parts, a complicated mechanism, a large and heavy

[0006] Fourth: The structure of the crankshaft is complex and difficult to manufacture

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