KR790001948B1 - Direct moving cam valve engine - Google Patents

Abstract

A cam valve assembly (I) of an internal combustion engine was composed of a cam shaft (18), a bracket(52), a vertical valve guide(44) with a view to decreasing a noise and a vibration of I by adjusting the presision clearance between the cam and follower(62). The cam shaft(18) was linked with a chain(24) so as to be rotated by a crank shaft (14) in the same direction links with the chain (24) with 10ts of other cams (28) crossed.

Description

Cam valve direct retractable engine

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a partially cutaway side view of an internal combustion engine according to the present invention, in which the valve and piston mechanism of the first cylinder are installed.

2 is a longitudinal sectional view of the main portion of FIG.

3 is an exploded perspective view of the camshaft and the valve assembly according to the present invention.

The present invention relates to an internal combustion engine formed by forming a vertical valve guide.

Specifically, a rocker arm in a known piston reciprocating internal combustion engine is replaced with a vertical valve guide, wherein a hexagonal bracket is arbitrarily mounted on the guide, and the cam bracket is rotated in accordance with the cam rotation. As the driven car rotates, the bracket can be easily lifted and reciprocated so that there is almost no vibration or noise, it is extremely easy to troubleshoot, and the cam valve can be directly opened and closed. It's about the engine.

Previous known technologies, such as US Pat. Nos. 2, 741, 931, 2, 751, 895 2, 804, 862 2, 863, 432 3, 306, 271 and 3, 352, 293 and the like generally show an appropriate technique, but are not applicable in the present invention. The known means are generally suitable for their intended purpose, but are rarely sufficient due to the complexity of the production and the high cost or inconvenience of use or operation.

Due to the aforementioned drawbacks of the known art, improvements in the art have been desperately desired.

The present invention, unlike the above-mentioned known technology, has a high simplicity of strength and durability, and at the same time, since the parts are required at a minimum, a manufacturing cost is remarkably inexpensive and a device having a feature that can be widely used is provided. There is this.

Other objects and advantages of the present invention will be apparent from the following description of the present invention and will be apparent from the embodiments, which can be realized by the method, the processing means and the combination technology.

As a characteristic element of the present invention, in forming a vertical valve guide that moves up and down according to cam rotation on a camshaft, a bracket for supporting a vehicle is adjusted to be mounted on the upper surface of the guide to provide a precise gap between the cam and the cam follower. This makes it possible to multiply the service life considerably less noise than the known rocker arm engines, almost no vibrations, and requires minimal components, and it has a synergistic effect with high simplicity in troubleshooting. It was made possible.

The present invention will be described in detail with reference to the accompanying drawings as follows.

1 is a side view of the internal combustion engine according to the present invention, which is cut to show the valve and piston mechanism of the first cylinder, FIG. 2 is a cross-sectional view of the engine, and FIG. 3 is an exploded enlarged perspective view of the camshaft and the valve assembly.

According to the figure, it is constructed on the basis of the principle of the present invention and shows the cam actuating engine directly at number 10.

Substantial embodiments of the invention shown include a cylinder block 12 having a crank shaft 14 therein which is rotatably mounted on an oil pan 13 and a suitable bearing (not shown) at the bottom.

Fly wheel 16 is secured at one end of crankshaft 14 and pulley 17 is at the other end. The camshaft 18 is rotatably mounted below the valve cover 20 on the appropriate bearing housing 19 and connected to the sprocket kit 22 by a chain 24 on the crankshaft 14. Let them bite. When the crankshaft 14 rotates in one direction, the camshaft 18 rotates in the same direction. A plurality of center cams 28 staggered with each other are fixed on the camshaft 18. The valve assembly is mounted to move vertically under each cam 28 in the cylinder head 30 mounted on the block 12. Each valve 32 includes a valve stem 34 moving in the through hole 36, a spring retainer 40, a spring 38, and a fastener 42 thereof. The tip of the valve stem 34 abuts the tip of the tubular valve guide 44 with the tool insertion hole 46 around it. The adjustment screw projection 48 on the valve guide 44 has a hexagonal base 52 for facilitating rotation, and has a spaced apart upward protruding arm 54 in which the opening 56 is laid. It is accommodated in the screw hole 50 in the center of the kit 52.

The radial screw hole 58 in the planar horizontal base portion 52 communicates with the vertical through hole 50. The set screw 60 is accommodated in the through part 58 to sift the briquette 52 to the protrusion part 48.

The cam follower roller 62 is adhered between the arms 54 on the shaft 64 with a slight gap with the cam 28 as shown in FIG.

The suction part 66 and the exhaust part are formed below the through part 36. The exhaust hole 67 is provided at the same height as the guide 44. The combustion chamber 68 has a spark arc 70. Within the cylinder 72 is a known piston 76 and a pin and head gasket 80.

In this invention, in order to adjust the cam assembly, the screw 60 is removed and the bracket 52 is turned left or right with a wrench to obtain a precise gap between the cam 28 and the roller 62. Such valve composition is easier than known rocker arm organs. There is no need to operate and adjust the engine, but simply turn the camshaft until the cam lobe is disengaged from the contact with the roller 62.

As described above, the internal combustion engine of the present invention has an excellent effect such that the service life is doubled because there is little noise and the number of parts is small so that there is no vibration.

Claims (1)

As shown in the text and described above, the cam shaft 18 rotating in the same direction by the crank shaft 14 in the known engine block is interlocked with the chain 24 so that a plurality of cams 28 are staggered. And a cam follower 62 which is in contact with and in contact with the cam follower 62, and is attached to the bracket 52, and a vertical valve main 34 is disposed on the tubular valve guide 44 at the bottom of the bracket 52. Directly retractable engine.

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