The utility model relates to an improved variable compression ratio piston of an internal combustion engine, which is an optimized design of the variable compression ratio piston with a disclosure No.CN101900056A, wherein a mechanical elastic deformation mechanism in a compression ratio adjusting device of the piston includes a round inclined surface drive disk arranged at the center of the mechanism and an annular inclined surface support ring arranged on the outer side of the round inclined surface drive disk; steel balls are uniformly distributed in a V-shaped ring groove formed by the support inclined surface of the annular inclined surface support ring and the drive inclined surface of the round inclined surface drive disk in an encircling way; and an elastic reset component is arranged on the steel balls, and the bottom surface of the elastic reset component is propped against the steel balls. Compared with the mechanical elastic deformation mechanism before optimization, as a spring seat plate is removed, the elastic reset component is in a state that a tension arm varies when the steel balls move, and the requirements that rigidity is big before the pretightening force and the rigidity becomes smaller after the pretightening force of the mechanical elastic deformation mechanism can be better satisfied. The improved variable compression ratio piston of an internal combustion engine has simpler structure, lower cost and more reliable working, and the compression ratio can quickly adapt and vary along with the working condition of the motor.

Optimized variable compression ratio piston of internal-combustion engine

The invention provides a variable-compression ratio piston of a combustion engine, comprising a piston top and a piston skirt A compression ratio adjusting device is arranged between the piston top and the piston skirt and provided with an adjusting device shell The adjusting device shell is composed of a round platen, an inner cylinder and an outer cylinder, wherein the round platen is fixedlyconnected on the bottom surface of the piston top; the inner cylinder is arranged below the round platen and fixedly connected on the top surface of the piston skirt; and the outer cylinder is in threaded connection with the inner cylinder; the opening of the outer cylinder is provided with a inner stop ring; and the round platen can be embedded between the opening end surface of the inner cylinder and the inner stop ring of the outer cylinder in an axial displacement The adjusting device is internally provided with a mechanically elastic deformation mechanism which is used for controlling the axial displacement of the round platen; and the initial pretightening force of the mechanically elastic deformation mechanism keeps close matching of the upper part of the outer edge of the round platen and the inner stop ring of the outer cylinder, and maintains that a flexible gap delta is formed between the lower part of the outer edge of the round platen and the opening end surface of the inner cylinder The compression ratio can make rapidly adaptive variance along with the working condition of the combustion engine The invention is especially suitable for an automobile engine

Variable-compression ratio piston of combustion engine

The invention discloses a reciprocating piston type internal combustion engine with an energy storage spring, and belongs to the technical field of manufacturing, energy conservation and emission reduction of engines. A dual-piston structure is adopted; a lower piston is connected with a connecting rod; a forcible energy storage spring is arranged between an upper piston and the lower piston; and the lower piston has a function of stably connecting the spring and the connecting rod. The lower piston is of a non-sealed structure, so that on one hand, the weight is reduced, and on the other hand, lubricating oil successfully passes through the lower piston to lubricate and seal the upper piston. The structure of the reciprocating piston type internal combustion engine is slightly more complicated than that of the common reciprocating piston type internal combustion engine and can be machined by the existing production line and the existing technology; the number of sets of equipment is not required to be increased; and large-scale production is realized. The reciprocating piston type internal combustion engine is suitable for various reciprocating piston type internal combustion engines comprising gasoline engines and diesel engines. The efficiency is improved greatly, so that reciprocating piston type internal combustion engine has great significance for development as well as energy conservation and emission reduction of automobile industry.

Reciprocating piston type internal combustion engine with energy storage spring

The invention discloses a parking cooling system of an oil fired automobile. The parking cooling system comprises a water storage tank, a water spraying machine and sprayers. The water storage tank is connected with at least one sprayer through a connecting pipe which is connected with an exhaust pipe, the sprayers are driven by the water spraying machine to spray water, and the water spraying machine is driven by a cooling circuit. After the automobile is parked, when the temperature of an engine is high, the water spraying machine automatically sprays water, and a circulating water pump continues working, so that the engine of the automobile is effectively prevented from being damaged by high temperature.

Parking cooling system of oil fired automobile

The invention discloses a combined piston with a variable compression ratio. A volume of a combustion chamber under the maximum combustion pressure can be changed through a piston cover capable of moving up and down relative to a piston body, and therefore a purpose of regulating and controlling the maximum combustion pressure is achieved. A gas sealing ring designed according to the full-sealingprinciple and an oil distribution ring capable of directly forming a lubricating oil film are matched with the piston for use. A lubricating and cooling oil way is further arranged in the piston. Therefore, an engine using the combined piston disclosed by the invention is suitable for higher compression ratio, is high in heat efficiency, low in fuel consumption, engine oil consumption and pollution discharge value, long in service life, and is expected to be equal to the service life of the engine and the like.

Combined piston with variable compression ratio

A volume-varying engine has two intersleeved pistons in each cylinder An inner piston is connected with a connecting rod via a piston pin An outer piston having a piston ring is supported on the inner piston via a spring It's characterized by the difference of the each stroke volume variation In the exhaust stroke, outer piston gets to the top of the cylinder Most of the exhaust gas can be exhausted, so as to increase the compression ratio In the air suction stroke the internal volume-increasing displacement of the outer piston at the intake end make the air intake larger than that of the constant volume engine

Variable capacity engine

The invention relates to a low-abrasion combustion engine whose machine oil pump is driven by independent auxiliary motor or parallel driven by combustion engine bent shaft Two driven wheels on the main shaft of machine oil pump individually have one overrun clutch; or the drive wheel of auxiliary and the main drive wheel of bent shaft individually have one overrun clutch, to realize the separation between two power resources of machine oil pump When connecting start control circuit, the circuit first connects the auxiliary motor to start the machine oil pump; after operation the machine oil pump for a long time, detecting hydraulic of the lubrication circuit has reached preset valve, outputting a light and sonic signal to start the combustion engine or automatically starting the combustion engine The invention has eliminated the dry friction when starting combustion engine to reduce the start abrasion The invention can improve the start condition, and prolong the service life of combustion engine, with little change, lower cost and wider application

Low-abrasion internal combustion engine

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Variable capacity engine

Low-abrasion internal combustion engine