Piston for a fuel engine with installed bearings

Abstract

This invention is a fuel engine piston with installed bearings 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, comprising: a piston body equipped with outer arc bearings, wherein said outer arc bearings are a type of rolling elements, wherein the piston body has installation grooves, wherein the installation grooves are provided with the outer arc bearings, and an outermost point of the outer arc bearings protrudes from an outer wall of the piston body, where the longitudinal axis of the outer arc bearings is perpendicular to the longitudinal axis of the piston body, and two end faces of the outer arc bearing are symmetrical with respect to the longitudinal axis of the piston body, so that a rolling direction of the outer arc bearing is parallel to the longitudinal axis of the piston body.

2. A piston for a fuel engine with installed bearings according to claim 1, characterized in that the number of installation grooves (6) 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, preferably two, so that the piston body does not swing during operation.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) By combining the accompanying drawings and the detailed description of the preferred embodiments, the invention is further described as below:

(2) FIG. 1 is a schematic diagram of the structure of this invention;

(3) FIG. 2 is a cross-sectional view of FIG. 1 along the CC direction;

(4) Wherein: 1piston body, 2outer arc bearing, 3pin shaft bolt, 4sealing ring, 5shim, 6installation groove, 7axis of the outer arc bearing, 8axis of the piston body.

DETAILED DESCRIPTION OF THE EMBODIMENTS

(5) The invention is further described in conjunction with the accompanying drawings:

(6) A piston for a fuel engine with installed bearings, characterized by: the piston body (1) is equipped with outer arc bearings (a rolling element).

(7) The piston body (1) has installation grooves, wherein the installation grooves (6) are provided with outer arc bearings (2) through pin shaft bolts (3), and the outer wall outermost point of outer arc bearings (2) protrude from the outer wall of the piston body (1). The outer arc bearings (2) serve as rolling elements that reciprocate and roll on the inner wall of the engine cylinder liner, with the rolling direction parallel to the axis (8) of the piston body (1).

(8) Sealing rings (4) are provided on the outer wall of the piston body (1), same as existing piston technology.

(9) The number of installation grooves (6) is four.

(10) The number of outer arc bearings (2) provided in each installation groove (6) is more than one, preferably two, so that the piston body (1) does not swing during operation.

(11) Both ends of the inner ring of each outer arc bearing (2) are provided with a shim (5). The pin shaft bolt (3) passes through the shims (5) and the outer arc bearing (2) and fixes them on the piston body (1).

(12) Each outer arc bearing (2) is equipped with two shims

(13) The axis (7) of the outer arc bearing (2) is perpendicular to the axis (8) of the piston body (1), and the two end faces of the outer arc bearing (2) are symmetrical with respect to the axis (8) of the piston body (1), so that the rolling direction of the outer arc bearing (2) is parallel to the axis (8) of the piston body (1)

Example Implementation

(14) The number of installation grooves (6) is four, distributed on the side surface of the piston body (1), and each installation groove (6) is provided with more than one outer arc bearings (2), the rotational direction of the outer arc bearing (2) is parallel to the axis of the piston body (1), ensuring that the outer wall of outer arc bearings (2) on the piston body (1) can roll friction with the engine cylinder liner;

(15) The outer arc bearings (2) are installed in the installation grooves (6) through pin shaft bolts (3), both ends of the inner ring of each outer arc bearing (2) are provided with a shim (5), The pin shaft bolt (3) passes through the shims (5) and the outer arc bearing (2) and fixes them on the piston body (1). The shims (5) 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, at the same time, it can prevent the piston body (1) from deformation when the pin shaft bolt (3) is tightened.

(16) The sealing ring (4) is a piston sealing ring, used to ensure the sealing between the piston body (1) and the engine cylinder liner, same as existing piston technology.

(17) The outer circumference of the piston body (1) does not participate in friction, reducing the friction between the piston and the cylinder liner.