CN201090308Y - Energy saving type piston of 6160 type supercharged diesel - Google Patents

Abstract

The utility model relates to an energy-saving type piston of 6160 type turbocharged diesel engine, the lower end of piston pin hole seat is an arc-shaped gap structure, the thickness of the top inner cavity of the piston is designed to be 20+-1mm, the ring groove for assembling piston ring is a four-channel ring groove, wherein the fourth ring groove is an oil ring groove with nominal width of 6mm, the guide face of piston skirt movement is optimized to be convex composite face. The utility model has the advantages that: compared with the prior piston, piston quality is reduced by 800-950g, the friction face is reduced by 25 percent, so that the reciprocation inertia force of diesel engine is lowered 25percent, the friction work loss ratio is lowered by 20 percent, available power is enhanced by 5 percent, service life is enhanced by 2000h, fuel consumption ratio is lowered by 4 percent, machine-oil consumption ratio is lowered by 20 percent, so as to realize energy-saving, consumption reduction and environmental protection. The utility model has also the advantages of low noise and reliable use.

Description

A kind of energy-saving piston of 6160 diesel engine

technical field

The utility model relates to a piston, in particular to an energy-saving piston of a 6160 type diesel engine, which belongs to a key part for assembly of a large medium-speed diesel engine.

Background technique

Diesel engines are mainly used in mechanical equipment such as automobiles, ships, construction machinery, transportation machinery, generator sets, etc. The piston is one of the most critical parts in a diesel engine and is the "heart" of a diesel engine. It burns fuel in high-pressure air to produce The explosion pressure is transmitted to the crankshaft to do work and form power. Structurally, the piston is composed of head, top surface, combustion chamber, skirt, inner cavity and other basic parts. There is usually a ring groove on the outer surface of the piston head, and a piston pin hole for fixing on the piston skirt. The working conditions of the piston are quite harsh. One is to withstand high temperature, and the working temperature of the top surface of the piston reaches 350-400 degrees; the other is to withstand high pressure. Up to 6-8m/s. The structure of the 6160 diesel engine piston disclosed in the prior art is a barrel-shaped rigid structure, the bottom surface is a cylindrical shape with a circumferential flat bottom thickness of 7mm, five ring grooves are designed, the skirt is straight and tapered, and the contact friction area of the piston movement is large. , the effective top thickness is 22-24mm, and the mass is 5180-5230g. The piston of this structure is heavy, which leads to a large reciprocating inertial force in the working motion, which brings great destructive force to the diesel engine and causes a lot of friction loss work. , so that the effective power is reduced, the fuel consumption and lubricating oil consumption are high, and the power, economy, energy saving and environmental protection performance are all insufficient.

Contents of the invention

The purpose of this utility model is to provide a 6160 type diesel engine energy-saving piston, which has light weight, reasonable structure, and small loss of ineffective friction work, so as to achieve the purpose of reducing fuel and lubricating oil consumption, saving energy and reducing pollution.

The technical scheme adopted by the utility model is as follows: a 6160 type diesel engine energy-saving piston, the structure includes a piston top surface, a piston combustion chamber, a piston head, a piston skirt and an inner cavity, and the piston skirt has a fixed piston The pin hole, which features a notched skirt at the lower end of the piston pin hole seat, subtracts the weight of excess wall thickness of the skirt that has no effect on piston function and performance.

The energy-saving piston of the 6160 type diesel engine is characterized in that the head of the piston is provided with four piston ring grooves.

The energy-saving piston of the 6160 type diesel engine is characterized in that the notch on the skirt at the lower end of the pin hole seat is an arc-shaped notch upward from the bottom.

The 6160 type diesel engine energy-saving piston is characterized in that the arc-shaped notch at the lower end skirt of the pin hole seat is composed of three arcs, the center section is an arc with a radius of R, and the two ends are respectively with a radius of R1. The arcs of R2 and R2 are respectively tangent to the bottom surface of the center section arc, so as to maintain the strength of the piston and avoid excessive concentration of stress at the connection caused by a direct arc connection with the guide surface.

The 6160 type diesel engine energy-saving piston is characterized in that the first, second and third ring grooves of the piston head are equipped with a piston ring with a width of 3.5mm for installing a flat ring, and the fourth is an oil ring groove for installing a support Spring oil ring, width 6mm, 2mm less than the original structure, this effect can better reflect the effect of oil distribution and oil control, and reduce the contact area of friction.

The energy-saving piston of the 6160 type diesel engine is characterized in that the thickness of the top of the piston is 20±1mm, which not only maintains the mechanical strength and reliability of work, avoids interference with the connecting rod and other related parts, but also effectively reduces the piston body weight.

The energy-saving piston of the 6160 type diesel engine is characterized in that the gap in the skirt at the lower end of the pin hole seat is formed by digging holes above the bottom surface of the piston skirt. the goal of.

In order to maintain the guiding performance of the piston, a guide surface with a certain width is provided at the lower end of the skirt in the vertical direction of the pin hole to effectively reduce the weight of the piston body.

The piston of the utility model is especially used for the 6160 type diesel engine whose working cylinder diameter is 160mm, the cylinder number is 6 cylinders, and the displacement is 27L.

The beneficial effects obtained by the utility model are: the weight of the piston is reduced from 5180-5230g to 4280-4380g, which is reduced by 800-950g, thereby reducing the reciprocating inertial force of the diesel engine by 25%, greatly reducing the impact of the inertial force when the main engine is working and the loss of effective power; adopting the four-ring groove structure and the arc-shaped notch structure of the skirt, the movement friction contact area is reduced by 20%, the friction work loss of the diesel engine is reduced by 20%, and the air leakage channel is correspondingly reduced; The optimized design of the skirt profile and cylinder matching clearance effectively reduces the gas leakage of the diesel engine and increases the effective power; the overall performance of the piston is as follows: the effective power of the diesel engine is increased by 12KW, which is increased by 5%; the fuel consumption is reduced Lubricating oil consumption has been reduced by 20%; the life of the piston has been increased by 2000h; at the same time, the emission of pollutants and working noise have been reduced, achieving the purpose of saving oil energy, protecting the atmospheric environment, and improving the service life of the product. The piston is easy to process , reducing costs.

Description of drawings

Fig. 1 is a front view (sectional view) of the present utility model.

Fig. 2 is a left side view (sectional view) of Fig. 1 .

Detailed ways

Below in conjunction with accompanying drawing and the embodiment that accompanying drawing provides, the utility model is further described.

As shown in Figures 1 and 2, a 6160 type diesel engine energy-saving piston has a total piston height of 230±0.5mm, a compression height of 130±0.1mm, a diameter of the pin hole 6 of Φ55mm, and a weight of 4520g. The skirt at the lower end of the piston pin hole seat has an arc-shaped notch 1 dug upward from the bottom surface. The notch 1 is composed of three arcs. The arc, R1 and R2 are both 22~30mm, respectively transitioning tangentially to the arc of the central section, the top surface of the arc arc of the central section is 38mm from the bottom surface of the piston, and there are four ring grooves on the piston head, of which the fourth ring groove 2 It is the oil ring groove, the width is 6mm, and the thickness 3 of the piston top is 19mm. In order to improve the stability of work, reduce the gap between cylinders, generate greater output power, and reduce operating noise, the outer circle of the piston skirt 4 is a convex barrel-shaped surface, and a certain The width of the guide surface 5 is to maintain the guiding of the piston and effectively reduce the weight of the piston body. The diesel engine installed with this piston has a rotating speed of 800r/min, a piston stroke of 225mm, a total displacement of 27L, a compression ratio of 14.5:1, and a maximum burst pressure of 9.0Mpa.

Claims (8)

1. the energy-saving piston of diesel engine comprises piston-top surface, piston combustion bowl, piston crown, piston skirt and inner chamber in the structure, it is characterized in that the skirt section of piston-pin boss lower end is dug jagged.

2. by the energy-saving piston of described 6160 diesel engines of claim 1, it is characterized in that piston crown is provided with four road piston ring grooves.

3. by claim 1 or the energy-saving piston of 2 described 6160 diesel engines, it is characterized in that the circular arc of breach for making progress in skirt section, piston-pin boss lower end from the bottom surface.

4. by the energy-saving piston of described 6160 diesel engines of claim 3, the circular arc cutaway that it is characterized in that skirt section, piston-pin boss lower end is made up of three sections circular arcs, central segment is to be the circular arc of R with the radius, two ends are respectively to be the circular arc of R1 and R2 with the radius, the two ends circular arc respectively with the tangent transition of central segment circular arc.

5. by the energy-saving piston of described 6160 diesel engines of claim 4, it is characterized in that central segment radius of arc R=140～165mm, two ends circular arc radius R 1 and R2 are 22～30mm.

6. by the energy-saving piston of described 6160 diesel engines of claim 1, be characterized in that the breach in skirt section, pin-and-hole seat lower end forms at above position, bottom surface, piston skirt borehole.

7. by the energy-saving piston of described 6160 diesel engines of claim 2, it is characterized in that the 4th road piston ring groove (2) width is 6mm.

8. by claim 1 or the energy-saving piston of 2 described 6160 diesel engines, it is characterized in that piston head thickness (3) is 20 ± 1mm.

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