CN210660335U

CN210660335U - Lightweight energy-saving piston

Info

Publication number: CN210660335U
Application number: CN201921601781.4U
Authority: CN
Inventors: 张峰; 汪明亮; 梅革胜; 李险峰; 王浩伟
Original assignee: Anhui Taolv New Power Technology Co Ltd; Shanghai Jiaotong University
Current assignee: Anhui Taolv New Power Technology Co Ltd; Shanghai Jiaotong University
Priority date: 2019-09-24
Filing date: 2019-09-24
Publication date: 2020-06-02
Anticipated expiration: 2029-09-24

Abstract

The utility model provides an energy-conserving piston of lightweight, include piston head, skirt section and be located the inside working chamber of skirt section, the both sides wall symmetry of working chamber is equipped with the key seat that opens there is the pinhole, is located and sets up flutedly on the top face of the head in the key seat outside, and the oil storage tank has been seted up to the direction of head to the both ends bottom that is located working chamber length direction. The reduction of the thickness of the arranged groove and the pin boss reduces the contact area between the skirt surface of the piston and the inner surface of the cylinder liner to 70-80% of the original contact area, and can obviously reduce the friction work loss of the piston. In addition, because the head part is provided with the groove, the thickness of the outer frame is correspondingly reduced to only 65-85% of the original thickness. The piston has a weight reduction effect of about 10% due to the reduction of the thickness of the outer frame. This novel lightweight piston can reduce the loss of inertia of moving under the condition of high-speed motion to and reduce the skirt portion to the pressure of cylinder liner, thereby reduce the work of friction, reach the purpose that reduces the energy consumption.

Description

Lightweight energy-saving piston

Technical Field

The utility model relates to a piston, concretely relates to energy-conserving piston of lightweight.

Background

The piston is the most important moving part of the internal combustion engine, called the heart of the internal combustion engine, bears alternating mechanical load and thermal load, and is one of the most severe key parts in the engine under the worst working condition.

At present, a piston moves in an engine and consists of a piston, a connecting rod, a piston pin, a bushing, a cylinder sleeve and the like. The piston is in high-speed reciprocating motion in the engine, the surface of the piston is in contact with the inner surface of the cylinder sleeve, and local friction is generated between the cylinder sleeve and the piston friction ring. Meanwhile, under the action of high load, the piston with a certain weight can offset part of power consumption in repeated acceleration movement back and forth, so that the service life of the piston and the cylinder sleeve is shortened.

In the conventionally designed piston, the outer part of the pin boss of the piston is generally designed to be thicker and larger, so that the overall weight of the piston is heavier, and the power and the service life of an engine are influenced.

SUMMERY OF THE UTILITY MODEL

In view of the problems existing in the background art, the to-be-solved technical problem of the present invention is to provide a piston capable of reducing the whole weight of the piston and reducing the energy consumption.

Therefore, the utility model discloses an adopt following technical scheme to realize:

the utility model provides an energy-conserving piston of lightweight, includes head, skirt portion and is located the inside working chamber of skirt portion, the both sides wall symmetry of working chamber is equipped with the key seat that opens there is the pinhole, is located to offer flutedly on the top face of the head in the key seat outside, and the oil storage tank has been offered to the direction of head to the both ends bottom that is located working chamber length direction.

In a further scheme, three grooves are formed in the same side, one groove is formed in the outer side wall of the pin boss and extends towards the head, and the other two grooves are symmetrically formed in the two sides of the pin boss respectively; the cross section of the groove is arc-shaped.

In the further scheme, adjacent grooves are connected through a reinforcing rib, one end of the reinforcing rib is connected with a convex arc on the outer side wall of the pin boss, and the other end of the reinforcing rib is connected with an outer frame of the head; the reinforcing ribs are lower than the height of the outer frame. The purpose of the reinforcing ribs is to enhance the overall strength of the piston head.

In a further scheme, the width of the working cavity is one fourth of the width of the inner gear of the piston, and the thickness of the pin seat positioned in the working cavity is 5-8 mm.

In a further scheme, three ring grooves are formed in the periphery of the head at intervals, and heat insulation layers are coated on the inner walls of the ring grooves; the head part and the skirt part are made of aluminum-silicon alloy of the piston, and the heat insulation layer is made of a titanium dioxide coating.

The piston aluminum-silicon alloy has good strength, rigidity and casting performance. On the basis, the ring groove of the piston and the inner part of the working cavity are coated with heat insulation layers, so that the piston has the performances of high temperature resistance, impact resistance, heat adhesion resistance and abrasion resistance, and the service life of the aluminum-silicon alloy piston is prolonged.

The head of the piston is provided with the groove and the oil storage groove, so that the weight of the piston is reduced, the potential energy loss during the up-and-down reciprocating motion of the piston is reduced, and the loss of energy consumption is further reduced to the maximum extent. In addition, due to the design of the groove, the width of the working cavity is reduced; an oil storage tank is additionally arranged, so that the weight of the piston is reduced and more lubricating oil is stored on the basis of keeping the total volume of the working cavity unchanged. The lubricating oil can cool the top of the piston and the pin boss, and can enable the stored oil to form an oil film on the skirt of the piston to play a role in lubrication.

Because of the grooves and the reduction of the thickness of the pin boss, the contact area between the surface of the skirt part of the piston and the inner surface of the cylinder liner is reduced to 70-80 percent of the original contact area, thereby obviously reducing the friction work loss of the piston. In addition, because the head of the piston is provided with the groove, the thickness of the outer frame is correspondingly reduced to only 65-85% of the original thickness. The piston has a weight reduction effect of about 10% due to the reduction of the thickness of the outer frame. The lightweight piston reduces loss of motion inertia under high-speed motion conditions. Meanwhile, the pressure of the skirt part on the cylinder sleeve is reduced due to the reduction of the whole weight of the piston, so that the friction work is reduced, and the effect of reducing energy consumption is achieved.

Drawings

The details of the present invention will be further described with reference to the accompanying drawings.

Fig. 1 is a top view of the present invention;

fig. 2 is a side view of the present invention;

3 FIG. 3 3 3 is 3 a 3 cross 3- 3 sectional 3 view 3 taken 3 along 3 line 3 A 3- 3 A 3 of 3 FIG. 3 1 3; 3

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;

fig. 5 is a cross-sectional view taken along line C-C of fig. 2.

In the figure: 1-head part, 2-skirt part, 3-pin hole, 4-working cavity, 5-groove, 6-ring groove, 7-oil storage groove and 8-pin seat.

Detailed Description

Referring to the attached drawings 1-5, the lightweight energy-saving piston comprises a head part 1, a skirt part 2 and a working cavity 4 located inside the skirt part 2, pin bosses 8 with pin holes 3 are symmetrically arranged on two side walls of the working cavity 4, a groove 5 is formed in the top end face of the head part 1 located on the outer side of each pin boss 8, and oil storage grooves 7 are formed in the bottoms of two ends of the working cavity 4 in the length direction and towards the head part 1.

The head of the piston is provided with a groove and an oil storage tank, so that the weight of the piston is reduced, the potential energy loss of the piston in up-and-down reciprocating motion is reduced, and the loss of energy consumption is reduced to the maximum extent. In addition, due to the design of the groove, the width of the working cavity is reduced, and the oil storage tank is additionally arranged, so that the total volume of the working cavity is unchanged, and the running performance of the piston is optimized.

In a further scheme, three grooves 5 are arranged on the same side, wherein one groove 5 is arranged on the outer side wall of the pin seat 8 and extends towards the head part 1, and the other two grooves are symmetrically arranged on the two sides of the pin seat respectively; the cross section of the groove 5 is arc-shaped.

The piston has the advantages that 6 concave grooves are symmetrically formed in the head of the piston, the weight of the piston can be reduced by 10% compared with that of the existing similar piston, the inertia potential energy consumed due to the weight problem is greatly reduced, the utilization of combustion heat energy is improved, and the oil consumption is reduced. In addition, the symmetrical arrangement of the grooves can also ensure the overall balance of the piston, so that the piston can keep stable during working.

In a further scheme, adjacent grooves 5 are connected through reinforcing ribs, one end of each reinforcing rib is connected with a convex arc on the outer side wall of the pin boss 8, and the other end of each reinforcing rib is connected with an outer frame of the head 1; the reinforcing ribs are lower than the height of the outer frame. The cross section of the reinforcing rib and the groove 5 is arc-shaped, and the purpose is to enhance the overall strength of the piston head.

In a further scheme, the width of the working cavity 4 is one fourth of the width of the inner gear of the piston, and the thickness of the pin seat 8 positioned in the working cavity 4 is 5-8 mm.

The reduction of the thickness of the pin boss reduces the contact area between the skirt part surface of the piston and the inner surface of the cylinder liner to 70-80% of the original contact area, and the friction work loss of the piston is obviously reduced. Meanwhile, the weight reduction of the piston can obviously reduce the loss of inertia momentum, and for a high-speed engine, the fuel consumption can be obviously reduced.

In addition, because the head is provided with the groove, the thickness of the outer frame is correspondingly reduced to only 65-85% of the original thickness, and the weight of the piston can be reduced by about 10% based on the reduction of the thickness. Under the condition of high-speed motion, the lightweight piston can reduce the loss of motion inertia and simultaneously reduce the pressure of the skirt part on the cylinder sleeve, thereby reducing the friction work and achieving the purpose of reducing the energy consumption.

In a further scheme, three ring grooves 6 are formed in the periphery of the head part 1 at intervals, and the inner walls of the ring grooves 6 are coated with heat insulation layers; the head part 1 and the skirt part 2 are made of piston aluminum-silicon alloy, and the heat insulation layer is made of a titanium dioxide coating.

The utility model discloses a piston aluminium silicon alloy material to the inner wall coating at the piston ring groove has the insulating layer, and the purpose has high temperature resistant, shock-resistant, heat-resistant adhesion and wear-resistant performance in order to improve the piston, prolongs the life of aluminium silicon alloy piston.

Claims

1. The utility model provides an energy-conserving piston of lightweight, includes head (1), skirt portion (2) and is located inside working chamber (4) of skirt portion (2), the both sides wall symmetry of working chamber (4) is equipped with and opens key seat (8) that have pinhole (3), its characterized in that: a groove (5) is formed in the top end face of the head (1) located on the outer side of the pin seat (8), and oil storage grooves (7) are formed in the bottoms of the two ends of the working cavity (4) in the length direction and in the direction of the head (1).

2. A lightweight, energy saving piston as set forth in claim 1, wherein: the number of the grooves (5) positioned on the same side is three, one groove (5) is arranged on the outer side wall of the pin seat (8) and extends towards the head part (1), and the other two grooves are symmetrically arranged on the two sides of the pin seat respectively; the cross section of the groove (5) is arc-shaped.

3. A lightweight, energy saving piston as set forth in claim 1 or 2, characterized in that: the adjacent grooves (5) are connected through reinforcing ribs, one end of each reinforcing rib is connected with the convex arc of the outer side wall of the pin seat (8), and the other end of each reinforcing rib is connected with the outer frame of the head (1); the reinforcing ribs are lower than the height of the outer frame.

4. A lightweight, energy saving piston as set forth in claim 1, wherein: the width of the working cavity (4) is one fourth of the width of the inner gear of the piston, and the thickness of the pin seat (8) positioned in the working cavity (4) is 5-8 mm.

5. A lightweight, energy saving piston as set forth in claim 1, wherein: three ring grooves (6) are formed in the periphery of the head portion (1) at intervals, heat insulation layers are coated on the inner walls of the ring grooves (6), the head portion (1) and the skirt portion (2) are made of piston aluminum-silicon alloy, and the heat insulation layers are made of titanium dioxide coatings.