Piston for A Fuel Engine with Installed Bearings

Abstract

This invention is a fuel engine piston with an installed bearing and belongs to the field of automotive engine components, specifically relating to a piston for a fuel engine. It includes a piston body, outer arc bearings, pin shaft bolts and sealing rings. It provides a piston for a fuel engine with bearings. The bearings on the piston enable rolling friction during piston operation, replacing sliding friction. This reduces the friction between the piston and the engine cylinder liner, decreases the energy consumption required to overcome friction, and reduces wear on the piston caused by sliding friction.

Claims

1. A piston for a fuel engine with installed bearings, characterized by: comprising a piston body (1); the piston body (1) uniformly having installation grooves, wherein the installation grooves are provided with outer arc bearings (2) through pin shaft bolts (3), and the outer arc bearings (2) protrude from the outer wall of the piston body (1); a sealing ring (4) is provided on the outer wall of the piston body (1).

2. A piston for a fuel engine with installed bearings according to claim 1, characterized in that the number of installation grooves is four.

3. A piston for a fuel engine with installed bearings according to claim 1, characterized in that the number of outer arc bearings (2) provided in each installation groove is more than one.

4. A piston for a fuel engine with installed bearings according to claim 1, characterized in that a shim is provided between the pin shaft bolts (3) and the outer arc bearings (2).

5. A piston for a fuel engine with installed bearings according to claim 4, characterized in that the number of shims is two.

6. A piston for a fuel engine with installed bearings according to claim 1, characterized in that the axis of the pin shaft bolts (3) is perpendicular to the generatrix of the piston body (1).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0015] By combining the accompanying drawings and the detailed description of the preferred embodiments, the invention is further described as below:

[0016] FIG. 1 is a schematic diagram of the structure of this invention;

[0017] FIG. 2 is a cross-sectional view of FIG. 1 along the CC direction;

[0018] Wherein: 1 - piston body, 2 - outer arc bearing, 3 - pin shaft bolt, 4 - sealing ring.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The invention is further described in conjunction with the accompanying drawings: [0020] A piston for a fuel engine with installed bearings, characterized by: comprising a piston body 1; [0021] The piston body 1 uniformly having installation grooves, wherein the installation grooves are provided with outer arc bearings 2 through pin shaft bolts 3, and the outer arc bearings 2 protrude from the outer wall of the piston body 1; [0022] A sealing ring 4 is provided on the outer wall of the piston body 1.

[0023] The number of installation grooves is four.

[0024] The number of outer arc bearings 2 provided in each installation groove is more than one.

[0025] A shim is provided between the pin shaft bolts 3 and the outer arc bearings 2.

[0026] The number of shims is two.

[0027] The axis of the pin shaft bolts 3 is perpendicular to the generatrix of the piston body 1.

Example Implementation

[0028] The number of installation grooves is four, evenly distributed on the side surface of the piston body 1, and each installation groove is provided with an outer arc bearing 2; the rotational direction of the outer arc bearing 2 is parallel to the generatrix direction of the piston body 1, ensuring that the outer arc bearings 2 on the piston body 1 can roll friction with the engine cylinder liner; [0029] The outer arc bearings 2 are installed in the installation grooves through pin shaft bolts 3; shims are placed between the pin shaft bolts 3 and the outer arc bearings 2; and the shims provide axial positioning for the inner ring of the outer arc bearings 2, ensuring that the outer ring of the outer arc bearings 2 does not contact the piston body 1 to prevent unnecessary friction; [0030] The sealing ring 4 is a piston sealing ring, used to ensure the sealing between the piston body 1 and the engine cylinder liner.

[0031] The outer circumference of the piston body 1 does not participate in friction, reducing the friction between the piston and the cylinder liner.