RU186419U1 - PISTON OF THE DIESEL ENGINE OF INTERNAL COMBUSTION - Google Patents

Abstract

The utility model relates to the field of engine building, namely to piston designs, and can be used as part of diesel internal combustion engines. A piston for an internal combustion engine having a head with a combustion chamber in the bottom, grooves for two compression rings and one oil scraper ring, and two samples for the valve, a skirt with an internal cavity and bosses located in the cavity, holes for the piston pin and grooves for the snap rings, as well as through holes in the skirt for draining the oil, characterized in that two through holes for draining the oil are located in a plane perpendicular to the axis of the holes for the piston pin on both sides of the piston skirt, and four more are spaced at equal angles relative to the first two. The holes are located below the upper plane of the oil scraper groove at an angle of 75 ° + 30 ° to the vertical axis of the piston. At the same time, oil consumption for waste is optimized. 4 ill.

Description

The utility model relates to the field of engine building, namely to piston designs and can be used as part of diesel internal combustion engines.

The closest to the claimed technical solution for the combination of essential features and the technical result achieved is the design of the piston described in the patent for utility model RU 104246, IPC F02F 3/02, published on 05/10/2011.

A disadvantage of the known technical solution is that the oil drain holes located in the groove under the oil scraper ring are made perpendicular to the axis of symmetry of the piston, which in turn impedes the free flow of oil residues removed by the oil scraper ring into the crankcase. Obstructed oil flow through the holes leads to an increase in oil consumption for waste, as well as insufficient lubrication of the connecting rod head and piston pin, resulting in a decrease in the reliability and durability of the structure. In FIG. 3 schematically shows the location of the pistons in the engine and the oil drain holes, the longitudinal axes of which are perpendicular to the vertical axis of the piston. It is seen that through the openings 11, the oil will flow quite easily back into the engine crankcase, and through the openings 12 it is difficult, due to their almost vertical location to the horizon.

The proposed technical solution is aimed at improving the reliability and durability of the piston for a diesel internal combustion engine, structurally not having a special nozzle supplying oil located in the lower part of the cylinder liner, for forced lubrication and cooling of the piston assembly with a finger and a connecting rod from the bottom.

The proposed version of the pistons for a diesel internal combustion engine can be manufactured on existing equipment using known technology. No other solutions of a similar purpose with a combination of similar essential features were found by the applicant during a search in scientific and technical literature and patent documentation. Therefore, the applicant believes that the proposal for this application meets the eligibility criteria of the utility model “novelty” and “industrial applicability”.

A piston for an internal combustion engine having a head with a combustion chamber in the bottom, grooves for two compression rings and one oil scraper ring and two samples for valves, a skirt with an internal cavity and bosses located in the cavity, holes for the piston pin and grooves for the retaining rings, and also through holes in the skirt for draining the oil, characterized in that two through holes for draining the oil, are located in a plane perpendicular to the axis of the holes for the piston pin on both sides of the piston skirt, and four equal angles relative to the first two. The holes are located below the upper plane of the groove under the oil scraper ring, at an angle of 75 ° + 30 ° to the axis of the piston.

The execution in the piston skirt of two through holes for draining oil located in a plane perpendicular to the axis of the holes for the piston pin on both sides of the piston skirt, and four more holes spaced at equal angles relative to the first two.

The holes are located below the upper plane of the groove under the oil scraper ring, at an angle of 75 ° + 30 ° to the axis of the piston. This solution will provide free oil flow through the openings from the oil scraper ring, which in turn will lead to a reduction in oil consumption for waste and increase the reliability and durability of the piston. In FIG. 4 schematically shows the location of the pistons in the engine and the oil drain holes, the longitudinal axes of which are at an angle of 15 (75 °), with the possibility of increasing by an angle of 16 (30 °). The proposed location of the drain holes 13 and 14 will greatly facilitate the flow of oil into the crankcase.

The claimed technical solution is illustrated by the drawings:

FIG. 1 - sectional view of a piston of an internal combustion engine;

FIG. 2 - piston of an internal combustion engine, bottom view, the proposed option.

FIG. 3 - schematic arrangement of pistons in the engine and the location of the holes for draining the oil, the old version;

FIG. 4 - schematic arrangement of pistons in the engine and the location of the holes for draining the oil, the proposed option;

A piston (Fig. 1) for an internal combustion engine having a head 1 with a cylindrical combustion chamber 2 and a displacer in the form of a cone in the bottom, grooves 3 and 4 for the compression rings and groove 5 for the oil scraper ring, a skirt with an internal cavity 7, bosses with holes under the piston pin 8, as well as through holes 6 for oil drainage, two of which (Fig. 2) are perpendicular to the axis of the holes 8 under the piston pin and four more holes are spaced at equal angles 9 and 10 relative to the first two holes, below the upper plane grooves 5 under the oil scraper ring, the longitudinal axis of the holes 6 are located at an angle of 75 ° to the vertical axis of the piston.

Claims (1)

A piston for an internal combustion engine having a head with a combustion chamber in the bottom, grooves for two compression rings, and one oil scraper ring, and two samples for valves, a skirt with an internal cavity and bosses located in the cavity, holes for the piston pin and grooves for the retaining rings and also through holes in the skirt for draining the oil, characterized in that two through holes for draining the oil are located in a plane perpendicular to the axis of the holes for the piston pin on both sides of the piston skirt, and four more are spaced equal angles relative to the first two, the longitudinal axis of the holes are located below the upper plane of the oil seal groove at an angle of 75 ° + 30 ° to the vertical axis of the piston.

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