SU1670159A1 - Internal combustion engine - Google Patents

Abstract

The invention makes it possible to reduce fuel consumption and reduce the toxicity of the treated gases of an internal combustion engine by increasing the combustion efficiency. In an internal combustion engine with a displaced inlet axis, relative to the intake valve axis, the combustion chamber is bounded by surface 1, piston head 10 of piston 2 and surfaces of two grooves located in cylinder 3 of cylinder 1. One of these grooves is semi-oval 8, and the other is sickle-shaped, simultaneously adjacent to the recess 8 and to the generatrix of the cylinder 1. The surface of at least part of the crescent-shaped recess is inclined at an acute angle to the opposite portion of the bottom 10 of the piston 2 in a section held parallel to the axis of the cylinder and perpendicular to the line connecting the center of the intake valve 4 with the intersection point of the axis of the inlet channel with the projection of the outer contour of the semi-oval recess 8. 3 Il.

Description

FIG g

The invention relates to mechanical engineering, in particular, to the technique of making combustion chambers with external mixture formation and forced ignition.

The purpose of the invention is to reduce fuel consumption and reduce exhaust emissions.

FIG. 1 shows a cylinder head, a view along the axis of the cylinder from the bottom; in fig. 2 shows a section A A in FIG. 1 (rotated into the drawing plane); in fig. 3 shows a section BB in FIG. 1 (rotated into the drawing plane).

The internal combustion engine contains a cylinder 1 with a piston 2, a cylinder 3 of cylinder 1, equipped with an inlet 4 and an exhaust 5 valves, located respectively in the inlet 6 and exhaust 7 channels.

The head 3 of cylinder 1 is provided with a semi-oval recess 8 and a crescent-shaped recess 9 adjoining the latter and adjacent to the generator of cylinder 1. The engine combustion chamber is limited to the bottom 10 of the piston 2, cylinder 1 and recesses 8 and 9 and fitted with a spark plug 11 installed in the semi-oval recess 8. The axis 12 of the intake valve 4 is located offset from the axis 13 of the inlet channel 6 to the periphery of the recess 8 and perpendicular to the straight 14 connecting the centers of the valves. The surface 15 of the part of the crescent-shaped recess 9 is inclined at an acute angle to the opposite section of the bottom 10 of the piston 2 in section BB, parallel to the axis of the cylinder and perpendicular to the line 16 connecting the center of the intake valve 4 with the point 17 of the intersection of the axis 13 of the inlet 6 with projection of the outer contour of the semi-oval recess 8.

The engine works as follows.

During the intake stroke, under the action of a vacuum created by the piston 2 moving from the top dead center (TDC), the combustible fuel-air mixture formed outside the cylinder enters the cylinder 1 through the open intake valve 4. Thanks to the fact that axis 13 intake channel 6 is offset relative to the axis of the intake valve 12, the combustible mixture acquires a rotational motion in the cylinder 1.

In the compression stroke, the mixture continues rotating in cylinder 1 around its axis. When piston 2 comes up to

TDC, combustible mixture is displaced from the space between the surface of the crescent-shaped recess 9 of the head 3 and the bottom 10 of the piston 2 into the recess 8. Thanks to the reciprocal position at an angle a of the surface 15 of the crescent-shaped section and the bottom 10 of the piston 2 in cross section BB, the mixture flows into the recess 8 tangentially to the axis of the cylinder 1 and receives an additional twist, which improves the combustion of the combustible mixture after it is ignited by the candle 11. During the subsequent stroke, the combustion products expand in cylinder 1, and during the exhaust stroke go out through the exhaust valve 5 and outlet

5 channel 7.

Claims (1)

Intense vortexing of the charge of the combustible mixture in the combustion chamber provides a more complete combustion of the fuel, thereby reducing fuel consumption and reducing exhaust emissions. Claims of the Invention An internal combustion engine comprising at least one cylinder with a piston, a cylinder head provided with 5 parallel exhaust and intake valves placed respectively in the inlet and outlet channels, a semi-oval recess and a crescent-shaped recess adjacent to the last and adjacent to the generator cylinder, and a combustion chamber bounded by the bottom of the piston, the cylinder and the recesses in its head and fitted with a candle ignition, installed in the semi-oval notch, and the axis of the inlet The valve 5 is located offset from the axis of the inlet channel to the periphery of the recess in the cylinder head and perpendicular to the straight line connecting the centers of the valves, characterized in that 0 reducing fuel consumption and reducing exhaust emissions by increasing the completeness of fuel combustion; 5 inclined at an acute angle to the opposite section of the bottom of the piston in section, held parallel to the axis of the cylinder and perpendicular to the line connecting in plan the center of the intake valve by the projection 0 of the outer contour of the semi-oval recess, with the apex of the acute angle located on the side of the generator of the cylinder. V 6 - Blobernumo Figz