KR100191603B1 - The whole type intake and exhaust gas multi-cylinders for an automotive engine - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intake / exhaust manifold in which an intake manifold is integrally casted in an automobile engine having a cylindrical intake valve and an exhaust valve to simplify the structure. The intake manifold 80 for supplying air sucked in communication with the first to fourth cylinders 5504 is an exhaust manifold 90 for exhausting the exhaust gas discharged from the first to fourth cylinders 5504 to the exhaust pipe. It is molded integrally with and has a structure arranged vertically on the cylinder head (50).

Description

Integral Intake and Exhaust Manifold of Automotive Engine

The present invention relates to an integrated intake / exhaust manifold of an automobile engine, and more particularly, to an automobile in which an intake manifold and an exhaust manifold are integrally cast in an automobile engine having a cylindrical intake valve and an exhaust valve. An integrated intake / exhaust manifold of an engine.

In general, when looking at the components of the engine for automobiles, a plurality of cylinders are integrally manufactured as a part constituting the engine body, a cylinder block having a water jacket and a coolant passage through which coolant flows is formed between each cylinder. And a cylinder head disposed above the cylinder block to form a combustion chamber together with a piston, including a cylinder head for installing various valve mechanisms, spark plugs, injection valves, and the like, and a crank case for installing a crank shaft.

1 is a perspective view showing a cross-sectional view of a part of a conventional automobile engine, and generally, a cylinder is formed by a rotational force of a crankshaft transmitted through a connecting rod 4 in a cylinder 1 formed integrally with a cylinder block 2. A piston (3) is provided which moves up and down along the wall surface of (1). The combustion chamber provided by the cylinder head (5) and the head of the piston (3) is provided with an intake port (6) via an intake manifold (7). Inhaled air is sucked in.

The air sucked in this way is supplied with fuel through the injection valve to form a mixer, and when the mixer is compressed by the piston (3), it is ignited by the spark plug 16 to rotate the crankshaft by the explosion force generated at this time. Get power.

In addition, in the conventional cylinder head 5, an intake valve 8 for opening the intake port 6 during the intake stroke and an exhaust valve 15 for exhaust gas after the combustion are applied to the springs 9 and 13. And the rocker arms 10 and 14 for driving these valves 8 and 15, the push rod 12 and the valve lifter 18 are sequentially connected, (19) has a structure for driving the intake valve (8) and the exhaust valve (15).

2 (a) and 2 (b) are a sectional side view and a plan view showing a configuration of a conventional automotive engine, respectively. As shown in these figures, the upper part of the cylinder 1 has an intake port 6 for introducing outside air at the time of opening the intake valve 8 and exhaust gas to the outside when the exhaust valve 15 is opened. The exhaust port 6a for discharging is arrange | positioned in the state spaced at fixed intervals. An intake manifold 7 for sucking fresh outside air is connected to the intake port 6, and an exhaust manifold 7a for exhausting exhaust gas to the outside through an exhaust pipe is connected to the exhaust port 6a.

Since the intake manifolds and exhaust manifolds of the conventional automotive engine having such a configuration are respectively disposed on both sides of the cylinder head, the structures are complicated because they are manufactured as separate parts, and the manufacturing cost is high. There is a problem of occupying a lot of space in the engine room by the intake manifold and exhaust manifold arranged in the transverse direction.

The present invention devised to solve such a problem is to cast the intake manifold and exhaust manifold integrally, and then placed vertically on the top of the cylinder head to simplify the structure and to secure enough space in the engine room The purpose of the present invention is to provide an integrated intake and exhaust manifold.

1 is a cross-sectional perspective view of a portion of a conventional automobile engine

2 (a) and 2 (b) are a sectional side view and a plan view showing the structure of a conventional automobile engine, respectively.

Figure 3 is a perspective view showing the overall configuration of the engine for automobiles according to the present invention

4 is a plan view showing the configuration of a cylinder head according to the present invention;

Figure 5 is a cross-sectional view showing the configuration of the integrated intake and exhaust manifold according to the present invention

* Description of the symbols for the main parts of the drawings *

20: crankshaft 22: connecting rod

24: piston 26: timing gear

28: timing belt 30: intake valve shaft pulley

3134: 14th Intake Valve 36: Intake Valve Shaft

38, 48: bearing 40: exhaust valve shaft pulley

4144: 14th: exhaust valve 46: exhaust valve shaft

5154: Cylinder 14: Water Jacket

58: cylinder head gasket 6164: 14th intake port

66: manifold gasket 68: bulkhead

7174: 14th exhaust port 80: intake manifold

90: exhaust manifold

An object of the present invention described above is equipped with an intake valve shaft pulley and an exhaust valve shaft pulley driven by the rotational force of a timing gear transmitted through a timing belt, and an intake valve shaft pulley and an exhaust valve shaft pulley at one end thereof, and a cylinder in the center thereof. An automobile engine comprising an intake valve shaft and an exhaust valve shaft in which the first to fourth intake valves and the first to fourth exhaust valves each have an integral shape, the air being in communication with the first to fourth intake ports The intake manifold for supplying the gas to the first to fourth cylinders is integrally formed with the exhaust manifold for discharging the exhaust gas discharged from the first to fourth cylinders to the exhaust pipe, and is disposed vertically on the cylinder head. It is achieved by an integrated intake / exhaust manifold of an automobile engine.

According to the present invention, since the intake manifold and the exhaust manifold are integrally formed, the structure is simple and the space of the engine room can be sufficiently secured, so that the degree of freedom in design can be increased.

Hereinafter, an integrated intake / exhaust manifold of an automobile engine according to a preferred embodiment of the present invention will be described in detail with reference to FIGS. 3 to 5.

Figure 3 is a perspective view showing the overall configuration of the engine for automobiles according to the present invention, Figure 4 is a plan view showing the configuration of the cylinder head according to the invention, Figure 5 is a cross-sectional view showing the configuration of the intake and exhaust manifold of the present invention. .

First, as shown in FIG. 3, when looking at the overall configuration of the engine employed in the present invention, a crank shaft 20 in which a plurality of pistons 24 are rotatably mounted by the connecting rod 22 and a crank shaft An intake valve shaft pulley 30 and an exhaust valve shaft pulley 40 driven by the rotational force of the timing gear 26 fitted to one end of the 20 and the timing gear 26 transmitted through the timing belt 28; In one end, an intake valve shaft pulley 30 is mounted, an intake valve shaft 36 having a cylindrical first to fourth intake valve 3134 integrally formed therein, and an exhaust valve shaft 46 at one end thereof. It is mounted, the center is composed of an exhaust valve shaft 46 formed integrally with the first to fourth exhaust valve 4144 of the cylindrical shape.

Here, the timing belt 28 is pressurized by the tensioner 76. In addition, the diameters of the intake valve shaft pulley 30 and the exhaust valve shaft pulley 40 which rotate the intake valve shaft 36 and the exhaust valve shaft 46 are larger than the diameter of the timing gear 26, so that the diameter is sufficient. The reduction ratio was obtained to selectively open the first to fourth intake valves 3134 and the first to fourth exhaust valves 4144 in the order of valve opening and closing.

Next, Figure 4 is a plan view showing the configuration of a cylinder head according to the present invention.

As shown, at one end of the intake valve shaft 36 and the exhaust valve shaft 46 of the present invention, the intake valve shaft pulley 30 and the exhaust valve shaft pulley operated by the rotational force transmitted by the timing belt 28. 40 is mounted, and the first to fourth intake valves 3134 and the first to fourth exhaust valves 4144 having a cylindrical shape are integrally formed at the center thereof, and these valves 3134 and 4144 are integrally formed. Bearings 38 and 48 are sandwiched therebetween.

Here, the first to fourth cylinders 5504 are sequentially formed in the cylinder block disposed below the cylinder head 50, and the first intake ports of the present invention are respectively formed on the upper portions of the cylinders 5515. The fourth intake port 6164 and the first to fourth exhaust ports 7714 are sequentially arranged. Further, these intake ports 6164 and exhaust ports 7142 are selectively opened by cylindrical intake valves 3134 and exhaust valves 4144 to intake intake air or discharge exhaust gas after combustion.

For the sake of understanding, let's take a look at the open state of the valve according to the explosive order (1 → 3 → 4 → 2 → 1) of the 4-stroke engine. For example, in the case where the fourth cylinder 54 is the intake stroke, for example, only the fourth intake valve 34 is opened and the remaining intake valves 3133 are kept closed. The fourth cylinder 54 is supplied to the fourth cylinder 54 through the fourth intake port 34.

At this time, in the case of the first cylinder 51 and the third cylinder 53, respectively, since the explosion and compression state, the intake valves 31 and 33 and the exhaust valve 41 disposed above the cylinders 51 and 53, respectively. , 43) are all closed. In addition, since the second cylinder 52 is in an exhausted state, the second exhaust valve 42 is opened so that the combusted gas is discharged to the outside through the exhaust manifold through the second exhaust port 72. 4 is shown in more detail.

5 is a cross-sectional view showing an integrated intake / exhaust manifold in communication with the first intake port 61 and the first exhaust port 71 disposed on the first cylinder 51, respectively.

Referring to FIG. 5, the piston 24 is slidably mounted on the wall by the connecting rod 22 in the first cylinder 51 constituting the cylinder block, and the cylinder block and the upper cylinder head 50. ), The head gasket 58 is fitted.

In addition, a plurality of water jackets 56, which are passages for cooling water, are formed in the cylinder head 50, and a partition wall 68 is formed in the center thereof. Intake ports 61 and exhaust ports 71 are vertically symmetrically formed on the left and right sides of the partition wall 68, respectively, and selectively open these intake ports 61 and exhaust ports 71. FIG. The first intake valve 31 and the first exhaust valve 41 are integrally formed on the first intake valve shaft 36 and the second intake valve shaft 36, respectively.

Here, the intake port 61 is shown half open by the operation of the intake valve 31, and the exhaust port 71 is shown in the closed state by the exhaust valve 41.

The first intake port 61 and the first exhaust port 71 disposed vertically adjacent to the partition wall 68 are connected to the intake manifold 80 and the exhaust manifold 90, respectively. In addition, a manifold is provided between the cylinder head 50 and the intake manifold 80 and the exhaust manifold 90 in which the first intake port 61 and the first exhaust port 71 are formed to prevent leakage of intake air and exhaust gas. The gasket 66 was inserted.

Here, the intake manifold 80 which supplies air sucked in communication with the first to fourth intake ports 6164 to the first to fourth cylinders 5504 is discharged from the first to fourth cylinders 5504. It is integrally formed with the exhaust manifold 90 which discharges exhaust gas by exhaust pipe, and is arrange | positioned perpendicularly to the cylinder head 50. As shown in FIG. Therefore, since the space occupied by the intake manifold 80 and the exhaust manifold 90 becomes smaller than in the conventional lateral arrangement, the space of the engine room can be utilized accordingly.

According to the integrated intake / exhaust manifold of the automobile engine according to the present invention described above, since the intake manifold and the exhaust manifold are integrally formed, the structure is simple, and the space of the engine room can be sufficiently secured, thus allowing freedom of design. Get the effect to increase.

Claims (1)

An intake valve shaft pulley 30 and an exhaust valve shaft pulley 40 driven by the rotational force of the timing gear 26 transmitted through the timing belt 28, and one end of the intake valve shaft pulley 30 and the exhaust valve. The shaft pulley 40 is mounted, and an intake valve shaft 36 and an exhaust valve shaft are formed integrally with the first to fourth intake valves 3134 and the first to fourth exhaust valves 4144 each having a cylindrical shape. An automotive engine comprising (46), The intake manifold 80 which supplies air sucked in communication with the first to fourth intake ports 6164 to the first to fourth cylinders 5504 is exhausted from the first to fourth cylinders 5504. An integrated intake / exhaust manifold of an automotive engine, characterized in that it is integrally formed with an exhaust manifold (90) for discharging gas into an exhaust pipe and disposed vertically on a cylinder head (50).