CN105332800A - Internal combustion engine system with friction reduction pin rollers - Google Patents

Abstract

The invention discloses an internal combustion engine system with friction reduction pin rollers in the technical field of internal combustion engines. The internal combustion engine system with the friction reduction pin rollers comprises an air cylinder cover, an air inlet passage, an air inlet valve, an exhaust passage, an exhaust valve, a piston, an air cylinder, a piston ring, a connection rod, a crankshaft and the friction reduction pin rollers, wherein the friction reduction pin rollers are embedded into the lateral wall of the piston and make contact with the inner wall face of the air cylinder; the friction reduction pin rollers are evenly distributed into four columns in the axial direction of the piston; the friction reduction pin rollers of the same column do not make contact with one another. In the working process of the internal combustion engine, the friction reduction pin rollers not only can achieve rolling friction between the skirt portion of the piston and the inner wall of the air cylinder so as to reduce friction force between the skirt portion of the piston and the inner wall face of the air cylinder, but also can bear the lateral force generated by secondary motion of the piston and play the supporting and guiding functions. The internal combustion engine system with the friction reduction pin rollers is reasonable in design, simple in structure and applicable to internal combustion engine systems.

Description

Internal combustion engine system with antifriction rollers

technical field

The invention relates to an anti-friction system in the technical field of internal combustion engines, in particular to an internal combustion engine system with anti-friction rollers that can reduce friction between pistons and cylinders.

Background technique

With the development of modern society, people have higher and higher requirements on the power and economy of the engine. In the case of a certain displacement, in order to increase the maximum output power of the engine, in addition to providing more fuel for combustion, reducing the friction between the internal parts of the internal combustion engine is also a very effective method. Therefore, reducing the friction between the internal components of the internal combustion engine, especially the friction between the piston skirt and the inner wall of the cylinder at high speed, is crucial to the performance development of the internal combustion engine. By reducing the number of piston rings between the piston and the inner wall of the cylinder, a certain friction reduction effect can be achieved, but it often leads to a large amount of piston leakage.

After searching the existing technical literature, it is found that Chinese patent application number 201210461458.8, patent name: invention patent application document of an opposed internal combustion engine system with a guide ball, this patent technology reduces the piston skirt by installing a guide ball on the piston skirt The friction between the head and the inner wall of the cylinder, but the guide ball of this technology cannot bear the lateral force, so it is only suitable for the opposed internal combustion engine system.

Contents of the invention

The present invention aims at the deficiencies of the above-mentioned prior art, and provides an internal combustion engine system with anti-friction rollers, which can better solve the problem of friction between the piston skirt and the inner wall of the cylinder.

The present invention is achieved through the following technical proposals, the present invention comprises a cylinder head, an intake port, an intake valve, a spark plug, an exhaust valve, an exhaust port, a cylinder, a first piston ring, a second piston ring, a Three piston rings, pistons, piston pins, connecting rods, crankshafts and friction-reducing rollers, intake and exhaust passages are arranged on the cylinder head, intake valves, exhaust valves and spark plugs are installed on the cylinder head, The cylinder and the cylinder head are solidified together, the piston is installed in the cylinder, the first piston ring, the second piston ring, and the third piston ring are all inlaid on the top of the piston, the first piston ring, the second piston ring . The third piston ring is in sealing contact with the inner wall of the cylinder. The piston is connected with the connecting rod through the piston pin. The axial anti-friction rollers are evenly distributed into four rows, and the anti-friction rollers in the same row do not contact each other.

Further, in the present invention, the anti-friction rollers are drum-shaped, and the anti-friction rollers are attached to the inner wall of the cylinder, and there is a line contact between the anti-friction rollers and the inner wall of the cylinder.

In the present invention, the anti-friction rollers are inlaid on the side wall of the piston, and all the anti-friction rollers can rotate freely in the side wall of the piston. During the working process of the internal combustion engine, when the piston moves left and right, the anti-friction rollers not only translate left and right with the piston, but also rotate themselves, and the anti-friction rollers play a certain guiding and supporting role. Due to the existence of anti-friction rollers, when the piston moves at high speed, rolling friction is realized between the piston skirt and the inner wall of the cylinder, thereby reducing the friction between the piston skirt and the inner wall of the cylinder.

Compared with the prior art, the invention has the following beneficial effects: the anti-friction roller of the invention not only plays a supporting role, but also can bear the lateral force caused by the second-order motion of the piston. Moreover, rolling friction can be realized between the piston skirt and the inner wall of the cylinder, thereby reducing the friction between the piston skirt and the inner wall of the cylinder; the invention can be applied to diesel engines as well as gasoline engines.

Description of drawings

Fig. 1 is the structural representation of the present invention;

The labels in the accompanying drawings are respectively: 1, intake valve, 2, exhaust valve, 3, cylinder, 4, first piston ring, 5, second piston ring, 6, third piston ring, 7, Piston, 8, piston pin, 9, connecting rod, 10, crankshaft, 11, antifriction roller.

detailed description

The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. This embodiment is based on the technical solution of the present invention, and provides detailed implementation methods and specific operating procedures, but the scope of protection of the present invention is not limited to the following embodiments. .

Example

Embodiment of the present invention is as shown in Fig. 1, and the present invention comprises cylinder head, intake port, intake valve 1, spark plug, exhaust valve 2, exhaust port, cylinder 3, first road piston ring 4, second road piston Ring 5, the third piston ring 6, piston 7, piston pin 8, connecting rod 9, crankshaft 10, anti-friction roller 11, the intake port and exhaust port are all arranged on the cylinder head, the intake valve 1, exhaust port The air valve 2 and the spark plug are installed on the cylinder head, the cylinder 3 is consolidated with the cylinder head, the piston 7 is installed in the cylinder 3, the first piston ring 4, the second piston ring 5, and the third piston ring 6 Both are inlaid on the top of the piston 7, the first piston ring 4, the second piston ring 5, and the third piston ring 6 are in sealing contact with the inner wall of the cylinder 3, and the piston 7 is connected with the connecting rod 9 through the piston pin 8, The connecting rod 9 is connected to the crankshaft 10, and the anti-friction rollers 11 are inlaid on the side wall of the piston 7 and are in contact with the inner wall of the cylinder 3. The anti-friction rollers 11 are evenly distributed in four rows along the axial direction of the piston 7, and the The anti-friction rollers 11 do not contact each other; the anti-friction rollers 11 are drum-shaped, and the anti-friction rollers 11 fit the inner wall of the cylinder 3, and the anti-friction rollers 11 and the inner wall of the cylinder 3 are in line contact.

In the present invention, the anti-friction rollers 11 are inlaid on the side wall of the piston 7 , and all the anti-friction rollers 11 can freely rotate in the side wall of the piston 7 . During the working process of the internal combustion engine, when the piston 7 moves left and right, the anti-friction roller 11 not only translates left and right with the piston 7, but also rotates itself, and the anti-friction roller 11 plays a certain role. Guiding support. Due to the existence of the anti-friction roller 11, when the piston 7 moves at high speed, rolling friction is realized between the skirt of the piston 7 and the inner wall of the cylinder 3, thereby reducing the friction between the skirt of the piston 7 and the inner wall of the cylinder 3.

The parts not involved in the present invention are the same as the prior art or can be realized by adopting the prior art.

Claims (2)

1., with an internal-combustion engine system for antifriction roller, comprise cylinder head, intake duct, suction valve (1), spark plug, outlet valve (2), air outlet flue, cylinder (3), top piston ring (4), second piston ring (5), 3rd road piston ring (6), piston (7), wrist pin (8), connecting rod (9), bent axle (10), intake duct, air outlet flue is arranged in cylinder head, suction valve (1), outlet valve (2) and spark plug are installed in cylinder head, and cylinder (3) and cylinder head are consolidated, and piston (7) is arranged in cylinder (3), top piston ring (4), second piston ring (5), 3rd road piston ring (6) is all embedded in the top of piston (7), top piston ring (4), second piston ring (5), 3rd road piston ring (6) seals with the internal face of cylinder (3) and contacts, piston (7) is connected with connecting rod (9) by wrist pin (8), connecting rod (9) connects bent axle (10), it is characterized in that, also comprise antifriction roller (11), the sidewall that antifriction roller (11) is embedded in piston (7) contacts with the internal face of cylinder (3), axial antifriction roller (11) along piston (7) is scattered in four row equably, is not in contact with each other between the antifriction roller (11) of same row.

2. the internal-combustion engine system with antifriction roller according to claim 1, it is characterized in that described antifriction roller (11) is cydariform, the inside wall of cylinder of antifriction roller (11) laminating cylinder (3) is linear contact lay between the inside wall of cylinder of antifriction roller (11) and cylinder (3).