JPS62159723A - Fuel injection equipment for internal combustion engine - Google Patents

Abstract

PURPOSE:To improve fuel combustibility by storing a part of a mixture pressed in a combustion chamber in the cylinder of an injection equipment provided in communication with the combustion chamber in a piston, and injecting it into the combustion chamber when the piston approaches near a top dead center in a compression stroke. CONSTITUTION:As a piston 5 moves upward in a compression stroke, a projection 18 formed at a circumferential position of the piston pin 17 of a connecting rod 15 pushes up a piston rod 8 through a spring plate 11 to push the piston 7 of an injection equipment toward a combustion chamber 4. Compressed air in the combustion chamber 4 therefore flows into the cylinder 6 of the injection equipment through a groove 14 for the forced feed and injection of the fuel. When the piston 5 reaches a fixed position about a top dead center to remove thrust pressure caused by the projection 18 from the piston rod 8, the piston 7 is moved backward by differential pressure due to difference in the area of its inside and outside planes 20, 21 and the tension of a spring 25. Consequently, a mixture in the cylinder 6 is injected through the groove 14 into a flame at the beginning of combustion in the combustion chamber 4.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention mainly applies to combustion initiation flames in internal combustion engine cylinders such as gasoline engines and diesel engines, in situations where the fuel gas in the combustion chamber is air or combustion initiation flames, hereinafter referred to as air fuel. The piston is equipped with a device that injects water inside the piston, and there is a cylinder and a piston.The cylinder and piston have a certain gap between them, and the piston has a groove that can be used for both pressure feeding and injection, and a port that can also be used for pressure feeding and injection. ) The piston moves toward the bottom dead center, and the protrusion around the connecting rod centered on the piston pin pushes up the plate due to the change in the angle of the connecting rod, and by pushing up the plate, the piston loft moves toward the bottom dead center. Push up rapidly until it reaches around the bottom dead center including .

When the internal combustion engine piston enters the compression stroke and compresses, it compresses the air-fuel source into the injector cylinder through the pumping and injection groove communicating with the cylinder combustion chamber.

When the internal combustion engine piston reaches the position before and after the top dead center, including the top dead center, where it has completed a rapid thrust up to the position before and after the bottom dead center, including the bottom dead center (the shoulder and elbow device differs depending on the injection start timing setting of the injection device). The piston moves toward the bottom dead center of the internal combustion engine due to the area difference between the pressure applied to the front and back surfaces of the injection pump piston by the repulsive force of the spring. It is injected into the internal combustion engine cylinder and combustion chamber, and remains in the direction of the bottom dead center of the internal combustion engine until the protrusion provided around the piston in the connecting slot starts pushing up again, preventing heat transfer to the piston.

The stroke of the injection pump piston is several tenths of the internal combustion engine histonic range, and it responds correctly to the movement of the internal combustion engine piston to repeat injection. An example of its implementation will be described as follows.

In the figure, (1) is the cylinder wall, (2) is the combustion chamber wall, (3) is the cylinder, (4) is the combustion chamber, (5) is the piston body, (
15) is the injector cylinder, (7) is the injector piston, (8) is the piston rod, (9) is the piston rod guide, (10) is the oil pump cylinder wall, (11) is the spring brake), (12) is the spring plate fixing part, (13) is the injection device cylinder wall, (14) is the groove for pressure feeding and injection, (15) is the connecting slot, (16) is the
) is the screw "ton b>", (17) is around the piston pin of the connecting slot, (18) is the protrusion, (19) is the angle provided on the protrusion, (20) is the piston surface, (21) is the back surface of the piston, ( 22) is the cylinder wall consisting of the piston body, (23) is the oil compression chamber, (24) is R, (25)
is the spring, (26) is the cavity of the piston jet, (2
7) is the intake valve, (28) is the exhaust valve, (29) is the intake port,
(30) is an exhaust port. The rest of the structure is the same as the embodiment shown in FIG.

The operation of the present invention will be explained with reference to the configuration shown in FIGS. 1 and 2.

During the compression stroke due to the reciprocating motion of the piston (5), the air and fuel in the cylinder (3) and combustion chamber (4) are compressed into the injector cylinder (6) via the pressure-feeding and injection groove (14). When the piston <5> reaches around the top dead center including the top dead center, the protrusion (18) with the angle (19) that has been set in advance to the injection timing starts spring play.
(11) The thrust of the piston jit (8) with RC24) is suddenly released, and the piston (7) which is integrated with the piston jit (8) is repulsed by the spring (25). Due to the area difference in the pressure received by the internal combustion engine piston body (5), the injector cylinder wall (22) is transferred to the cylinder wall (22) of the internal combustion engine, and the air and fuel in the cylinder (6) are forced into the injection groove (21). 14) It is injected into the cylinder (3) and combustion chamber (4) mainly into the combustion starting flame.

The piston (7) and piston loft (8) at the injection stage due to the release of thrust must move faster than the movement of the piston body (5), otherwise injection will not be achieved, and in order to hasten the reaction, the piston loft shaft (26) must be emptied. Body and piston surface (20)
Adjustment of the area difference in the pressure that the back surface (21) receives (the size of the piston loft) is handled by adjusting the strength of the repulsive force of the spring.

When the piston loft (8) rises, the cylinder wall (10) that is integrated with the piston jit moves the rod guide (9) up and down in a hollow state, thereby raising the piston loft (8) and the cylinder wall (10).
) rises, piston loft (8) loft guide (9
).

In this invention, combustion starts in the cylinder of the combustion chamber. By injecting the flame fuel gas in the injection device into the flame whose temperature has increased (it may be ejected at low revolutions), the entire body is combusted at a high temperature. Generates a swirl that is resistant to flame.

In a diesel internal combustion engine, high-temperature compressed air (sometimes flame is injected) is mainly injected or ejected into the combustion starting flame to promote combustion in the surrounding flames and create a strong swirl in the overall flame, thereby achieving both of the above. This injection device performs high-temperature combustion in a lean state, increasing combustion efficiency and achieving low fuel consumption and low pollution.

[Brief explanation of drawings]

FIG. 1 is a sectional view of an internal combustion engine cylinder, a combustion chamber, a piston, and an injection device installed in the piston. -Figure 2 shows the cylinder wall, piston, and groove for pressure feeding and injection of the injection device provided on the piston. In the figure, (4) is the combustion chamber, (5) is the piston body, (6) is the injector cylinder, (7) is the injector piston, and (13) is the injector cylinder.
) is the cylinder wall of the injector, (1B) is a protrusion provided around the piston of the connecting rod, and (24) is a groove provided in the piston rod (8) with R (14) for both pressure feeding and injection.

Claims (1)

[Claims] In an internal combustion engine such as a gasoline engine or diesel engine, a device that injects fuel gas air or combustion starting flame in the cylinder or combustion chamber is used to inject mainly into the combustion starting flame within the cylinder or combustion chamber. This injection device is characterized by giving a swirl to the entire flame to promote combustion and enable low fuel consumption and low pollution.