Pistons with clearance paired energy-saving and environment-friendly piston rings

Abstract

The invention relates to the technical field of internal combustion engine accessory manufacturing, in particular to a piston of an energy-saving environment-friendly mounting clearance pairing piston ring. The piston of the energy-saving environment-friendly mounting clearance pairing piston ring comprises a piston body, a first gas ring and a second gas ring, wherein the first gas ring and the second gas ring are installed on the piston body, one end of an opening of a ring body of each gas ring serves as an extending portion, the other end of the opening of the ring body of each gas ring serves as a lap-joint portion, each lap-joint portion corresponds to each extending portion in length, when lap joint is carried out on each lap-joint portion and each extending portion in a vertical mode to enable the ring body of each gas ring to form the whole circle, a gap which cannot expand along with increase of the abrasion loss of each gas ring is formed between the slope of each extending portion and the slope of each lap-joint portion, a fixed matched proportion is arranged between the gap formed between the slopes at the position of the lap joint of the opening of the first gas ring and the gap formed between the slopes at the position of the lap joint of the opening of the second gas ring, and the value of the fixed matched proportion is 0.035mm-0.18mm to 0.02mm-0.12mm. The piston of the energy-saving environment-friendly mounting clearance pairing piston ring can greatly improve the sealing performance and the compression pressure of an air cylinder, fuel oil can carry out sufficient combustion, the phenomenon of carbon deposit can never happen, consumption of the fuel oil and consumption of engine oil are reduced, pollution emission is reduced, and various mechanical property indexes and various economic indexes of an internal combustion engine are greatly improved.

Description

Technical field [0001] The invention relates to the technical field of the manufacture of internal combustion engine parts, in particular to a piston with an installation gap matching an energy-saving and environmentally-friendly piston ring. Background technique [0002] In the assembly and use of internal combustion engine piston rings, the common practice is to stagger the piston ring openings by 120° or 180° to block or reduce the amount of high-temperature gas leakage. However, large-volume cylinders usually use multiple piston rings but still cannot achieve the ideal Sealing effect. Especially after a long time of use, the friction between the piston ring and the cylinder increases the cumulative wear of the piston ring and the cylinder, the opening gap of the piston ring will gradually expand, and the leakage of high-temperature gas will increase, resulting in a decrease in cylinder compression pressure and insufficient fuel combustion. This causes a series of negative pr...

AI Technical Summary

Problems solved by technology

[0002] In the assembly and use of internal combustion engine piston rings, it is common practice to stagger the openings of the piston rings by 120° or 180° to block or reduce the amount of high-temperature gas leakage, but large-volume cylinders usually use multiple piston rings but still cannot achieve ideal sealing effect

Especially after a long period of use, the friction between the piston ring and the cylinder will increase the cumulative wear of the piston ring and the cylinder, the gap between the openings of the piston ring will gradually expand, and the leakage of high-temperature gas will increase, resulting in a decrease in the compression pressure of the cylinder and insufficient combustion of fuel. It causes a series of negative problems such as increased fuel consumption and engine oil consumption, decreased power performance of the internal combustion engine, increased operating temperature, worsened lubrication conditions, and increased emissions of harmful substances.

In order to solve this problem, the industry mainly adopts the method of adding an additional device after the exhaust pipe, or optimizing the surface treatment materials of the piston ring and the cylinder, so as to prolong the time when the gap between the piston ring opening increases; although these methods do not affect the piston ring opening. The expansion of the system has played a certain role in delaying, but it has not fundamentally solved the problem

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