KR19980084937A - Automotive engines with oil-tight passages into the combustion chamber - Google Patents

Abstract

The present invention provides an automobile having an oil inflow prevention passage into a combustion chamber which can prevent oil from flowing into the combustion chamber from the intake manifold, thereby preventing abnormal combustion of the mixer and sticking of the piston ring to the inner circumferential surface of the cylinder block. It's about the engine. The engine has a cylinder head and top of the cylinder block connected to the intake manifold, so that a uniform quality and quantity of mixer is distributed from the intake manifold to the combustion chamber, while receiving as little resistance as possible from the mixer made in the vaporizer. An oil collection groove formed at an end portion of a passage of the cylinder block connected to the intake manifold; An oil passage connecting the oil collecting groove and the lower end of the cylinder block to discharge oil accumulated in the oil collecting groove from the collecting groove to the lower end of the cylinder block; A one-way orifice provided in the middle of the oil passage to prevent backflow of oil flowing along the oil passage.

Description

Automotive engines with oil-tight passages into the combustion chamber

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engine of a motor vehicle, and more particularly, an abnormal combustion and a sticking phenomenon of a piston ring due to oil flowing into an engine combustion chamber from an intake manifold installed at an upper portion of the engine during operation of the engine. It relates to an automobile engine having an oil inflow prevention passage into the combustion chamber to prevent the.

Typically, engines generating power in automobiles are comprised of a cylinder head, cylinder block, piston, connecting rod, crankshaft, flywheel, camshaft, valve and valve opening and closing mechanism. The cylinder head is mounted on an upper portion of the cylinder block, and an intake port for sucking the mixer and an exhaust port through which the combustion gas is discharged are formed in the cylinder head, respectively. Intake and exhaust valves are provided in the intake port and the exhaust port, respectively, and these intake and exhaust valves are operated by cams of cam shafts rotated by the crank shaft of the engine.

In addition, the piston 2 is installed inside the cylinder block 3 of the engine so as to reciprocate up and down, as shown in FIG. 1, to compress the mixer sucked through the intake port provided to the cylinder head 1. Let it explode A connecting rod connected to the crankshaft is connected to the lower end of the piston 2 by a piston pin, and the connecting rod converts the linear linear force of the piston into a rotary moment. The flywheel is fixed to one end of the crankshaft to allow the crankshaft to rotate smoothly using the crankshaft inertia.

Here, the piston (2) for generating power by compressing and exploding fuel is to reciprocate up and down inside the cylinder block (3), as described above, in order to generate a high output, the piston (2) and the cylinder is the first priority The airtightness between the blocks 3 should be maintained.

When the piston 2 moves to the top dead center to form the upper part of the cylinder block 3 and the combustion chamber, and to compress the fuel introduced through the intake port, the outer peripheral surface of the piston 2 and the inner peripheral surface of the cylinder block 3 If the fuel leaks in between, the compressive force is reduced. Therefore, the output of the engine is greatly reduced by not making an efficient explosion stroke.

In addition, since the piston 2 moves up and down while rubbing against the inner circumferential surface of the cylinder block 3, oil for reducing frictional resistance must be supplied. At this time, if airtightness is not maintained between the piston 2 and the inner circumferential surface of the cylinder block 3, the oil moves together with the raised piston 2 to penetrate into the combustion chamber 6 and mix with the mixer. In order to maintain airtightness between the piston 2 and the inner circumferential surface of the cylinder block 3, the piston 2 is provided with a number of piston rings 5.

Therefore, the oil supplied by the appropriate amount is continuously burned in the combustion chamber 6, so that it is not possible to reduce the friction resistance, which is an original function later, due to the absolute lack of quantity. When a shortage of oil occurs, the piston 2 causes severe friction with the cylinder block 3, causing the piston 2 to be continuously worn, thereby severely restricting the vertical movement of the piston 2. In addition, as the piston 2 wears, the clearance between the piston 2 and the cylinder block 3 becomes wider, and the above-mentioned adverse effects are increased and occur.

On the other hand, the combustion chamber of the engine is connected to the intake manifold 4, and the intake manifold 4 distributes the mixer of uniform quality and quantity to the combustion chamber of the engine with as little resistance as possible as the mixer made in the vaporizer. .

However, in the conventional engine as described above, there is a problem that oil is introduced into the combustion chamber from the intake manifold, and the abnormal combustion of the mixer and the sticking phenomenon of the piston ring sticking to the inner circumferential surface of the cylinder block occur, thereby reducing the efficiency of the engine. .

Accordingly, an object of the present invention is to prevent oil from entering the combustion chamber from the intake manifold, thereby preventing the oil inflow passage into the combustion chamber which can prevent abnormal combustion of the mixer and sticking phenomenon that the piston ring sticks to the inner circumferential surface of the cylinder block. It is to provide an automobile engine provided.

1 is a view schematically showing a connection relationship between a conventional engine and an intake manifold;

2 is a view schematically illustrating a connection relationship between an intake manifold and an automobile engine having an oil inflow prevention passage into a combustion chamber according to the present invention;

(Explanation of symbols for the main parts of the drawing)

1: cylinder head 2: piston

3: cylinder block 4: intake manifold

5: Piston Ring 6: Oil Collection Groove

7: oil passage 8: one-way orifice

9,10: mixer passage

An object as described above is an automobile in which the upper ends of the cylinder head and cylinder block are connected with the intake manifold so that a uniform quality and quantity of mixer is distributed from the intake manifold to the combustion chamber while receiving as little resistance as possible from the mixer made in the vaporizer. An engine, comprising: an oil collecting groove formed at an end of the passage of a cylinder block connected to the intake manifold by a mixer passage; An oil passage connecting the oil collection groove and the bottom of the cylinder block to discharge oil accumulated in the oil collection groove from the collection groove to the lower end of the cylinder block; It is achieved by an automobile engine according to the invention, characterized in that it comprises a one-way orifice provided in an intermediate portion of the oil passage to prevent backflow of oil flowing along the oil passage.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

2 is a view schematically illustrating a connection relationship between an automobile engine and an intake manifold having an oil inflow prevention passage into a combustion chamber according to the present invention.

As shown in FIG. 2, in the automobile engine according to the present invention, the cylinder head 1 and the cylinder block 3 are connected to the intake manifold 4 through the mixer passages 9 and 10, respectively. Therefore, the combustion chamber of the engine distributes a uniform quality and quantity of mixer from the intake manifold 4 to the combustion chamber with the least possible resistance of the mixer made in the vaporizer.

At the end of the passage 10 of the cylinder block 3, which is connected to the intake manifold 4 by the mixer passage 10, an oil collection groove is installed so that oil introduced into the mixer from the intake manifold 4 is accumulated. 6) is formed. The oil collection groove 6 is formed as a groove having a constant depth, it can collect a certain amount of oil flowing into the combustion chamber through the mixer passage 10, the oil accumulated in the oil collection groove (6) is the oil collection groove (6) Is discharged from the lower end of the cylinder block 3 along the oil passage 7 extending from the lower end to the lower end of the cylinder block 3.

On the other hand, the one-way orifice 8 for preventing the oil flowing along the oil passage 7 from flowing back along the oil passage 7 by the action of the piston 2 and the piston ring 5 is provided with the oil passage 7. Is provided in the middle of the

Therefore, oil flowing from the intake manifold 4 into the combustion chamber together with the mixer is collected in the oil collecting groove, and the oil collected in the oil collecting groove is drained to the lower end of the cylinder block along the oil passage leading to the lower end of the cylinder block. At this time, backflow of oil is prevented by the one-way orifice provided in the middle of the oil passage.

According to the engine of the automobile according to the present invention as described above, it is possible to prevent the oil from flowing into the combustion chamber from the intake manifold, to prevent the abnormal combustion of the mixer and sticking sticking to the inner peripheral surface of the cylinder block. .

On the other hand, the present invention is not limited to the above-described specific preferred embodiments, and various changes can be made by those skilled in the art without departing from the gist of the invention claimed in the claims. will be.

Claims (1)

In an automobile engine in which a cylinder head and an upper end of a cylinder block are connected to an intake manifold, in which a uniform quality and quantity mixer is distributed from the intake manifold to the combustion chamber while receiving the least possible resistance of the mixer made in the vaporizer, An oil collecting groove formed at an end of the passage of the cylinder block connected to the intake manifold by a mixer passage; An oil passage connecting the oil collection groove and the bottom of the cylinder block to discharge oil accumulated in the oil collection groove from the collection groove to the lower end of the cylinder block; And an one-way orifice provided in an intermediate portion of the oil passage to prevent backflow of oil flowing along the oil passage.