KR19990007292U - Vehicle engine intake - Google Patents

Abstract

By improving the structure of the intake manifold, the air flow flowing into the combustion chamber at low speed is formed by swirl flow, and the tumble flow is formed at high speed, making the intake manifold compact and improving engine performance. An intake manifold (20) for inspiring an engine intake apparatus of a vehicle, the intake air of which is introduced from outside into the planar chamber (10) and mixed with fuel, and the mixed intake manifold (20) is distributed to each combustion chamber of the engine. In the intake apparatus of a vehicle engine having a), one end is connected to the platen chamber 10 of the intake manifold 20, branched into the tumble passage 21A and the swirl passage 22A, and the other end is the cylinder head 5 And a plurality of pairs of branch runner pipes 21 and 22 connected to an intake port of the tank, and each of the tumble valves 30 is provided in the tumble passage 21A and the swirl passage 22A of the branch runner pipes 21 and 22, respectively. ) And swirl valve (40) 0) and swirl valves 40 are connected to respective valve shafts 50 and 60 to rotate these valves 30 and 40, and drive motors 52 for tumble valve control to these valve shafts 50 and 60. And the output shafts of the drive motor 62 for swirl valve control, respectively, and these drive motors 52 and 62 are electric signals for detecting the signal and the engine rotation state of the sensor 70 for detecting the stepped amount of the accelerator pedal 100. Characterized in that the drive is controlled by the control unit (ECU) (80).

Description

Vehicle engine intake

The present invention relates to an engine intake apparatus of a vehicle, and in particular, by improving the structure of the intake manifold, the air flow flowing into the combustion chamber at low speed of the engine is formed by swirl flow, and the tumble flow is generated at high speed. The present invention relates to an engine intake apparatus for a vehicle that is formed to make the intake manifold compact and to improve the performance of the engine.

In general, the engine intake apparatus of a vehicle is a device for adjusting the amount of air required for the combustion chamber of the engine and supplying it to the cylinder side, and is configured to supply air and fuel to the cylinders of each engine through the intake manifold.

Conventionally, the intake manifold is connected to a throttle body for receiving the outside air, and one end of a plurality of runner pipes corresponding to the number of cylinders is connected to the planetary chamber, and the other end of the runner pipe is connected to each cylinder. It is connected to the intake port, and an injector, which is a fuel injection device, is mounted on the end side of each of the runner pipes.

In the conventional intake manifold configured as described above, the amount of air regulated through the throttle body is introduced into the planar chamber, and again, the air flows to the intake port side of the cylinder selectively through each runner pipe, and the fuel injected from the injector mixes with the air. To be supplied to the cylinder.

However, the intake manifold has a relatively long length of the runner pipe, which not only increases the overall volume, but also increases the flow resistance of the air, thereby causing a relatively insufficient air intake at high speed of rotation of the engine, causing a decrease in engine performance.

Therefore, in order to solve this problem, there is a conventional intake pipe configured to have a long path at low speed and a short path at high speed, but this is because the volume of the intake manifold is large, thereby limiting the installation space. There are drawbacks to receiving.

The present invention was devised in view of the above-mentioned circumstances, and the structure of the intake manifold was improved to make the intake manifold compact, and the air flow flow was made at the low speed of the engine and the swirl flow was made at high speed. An object of the present invention is to provide an engine intake device for a vehicle in which a tumble flow is performed to increase an improvement in engine performance.

A specific means of the present invention for achieving the above object is to provide an intake manifold for injecting air sucked from the outside into the planar chamber to mix with the fuel, and to distribute the mixed mixer to each combustion chamber of the engine. In the engine intake apparatus, a plurality of pairs of branch runner pipes, one end of which is connected to the platen chamber of the intake manifold, branches into the tumble passage and the swirl passage, and the other end is connected to the intake port of the cylinder head, is installed. Each tumble valve and swirl valve are installed in the tumble passage and the swirl passage of the pipe, and each valve shaft is connected to the tumble valve and the swirl valve, and the output shaft of the tumble valve control drive motor and the swirl valve control drive motor is connected to these valve shafts. And the drive motor is an electrical control unit (ECU) that detects the engine's rotational state and the signal of the sensor that senses the pedal pedal depression. Characterized in that by configuring such that the control drive.

1,2 is a side cross-sectional view and a planar cross-sectional view showing the configuration of an intake apparatus according to an embodiment of the present invention.

Figure 3 is an operating state of the swirl valve applied to an embodiment of the present invention.

Figure 4 is a perspective view of a swirl valve applied to the embodiment of the present invention.

Explanation of symbols for the main parts of the drawings

10: Planum chamber 20: Intake manifold

21,22: Branch runner pipe 21A: Tumble passage

22A: Swirl passage 30: Tumble valve

40: swirl valve 41: valve plate

42: swirl wing 50,60: valve shaft

52: drive motor for tumble valve control 62: drive motor for swirl valve control

70: sensor 80: electric control device

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention;

As shown in FIGS. 1 and 2, the air sucked from the outside is introduced into the planar chamber 10 to be mixed with the fuel, and the intake air distributing the mixed mixer to the combustion chamber 6 of the cylinder head 5 of the engine. In the manifold 20, one end is connected to the platen chamber 10 of the intake manifold 20, branched into the tumble passage 21A and the swirl passage 22A, and the other end thereof is the intake of the cylinder head 5 again. A plurality of pairs of branch runner pipes 21 and 22 connected to the port 5A are provided, and each of the tumble valves 30 is provided in the tumble passage 21A and the swirl passage 22A of the branch runner pipes 21 and 22. ) And swirl valves 40, and the respective valve shafts 50 and 60 are installed in the tumble valve 30 and the swirl valve 40 to rotate the valves 30 and 40. The shafts 50 and 60 are connected to the output shafts of the tumble valve control drive motor 52 and the swirl valve control drive motor 62, respectively, and these drive motors 52 and 62 are stepped on the accelerator pedal 100. The driving is controlled by an electric control unit (ECU) 80 that detects the signal of the sensor 70 and the engine rotation state.

In the swirl valve 40, a plurality of swirl blades 42 are installed in the disk-shaped valve plate 41 on both sides to change the swirl flow to swirl flow.

That is, the swirl valve 40 is spherical in appearance, and when the swirl passage 22A is blocked, the valve plate 41 is vertically positioned with respect to the swirl passage 22A, and the valve plate 41 is closed. When the outer circumferential surface is in close contact with the inner circumferential wall surface of the swirl passage 22A to block the air flow, and the valve plate 41 of the swirl valve 40 is positioned side by side with the swirl passage 22A, a plurality of swirl wings 42 are provided. A swirl blade 42 is provided on the valve plate 41 at a predetermined twist angle with respect to the valve shaft 60 line of the swirl valve 40 so that air escapes through the gap therebetween.

The operation of this embodiment configured as described above will be described.

First, before starting the engine, the tumble valve 30 and the swirl valve 40 are closed in FIG. 2 so that each tumble passage 21A and the swirl passage 22A of the branch runner pipes 21 and 22 block the air flow. It becomes a state.

In this state, when the engine is started, the engine is in an idling state. At this time, the drive valve 62 for controlling the swirl valve is controlled by the electric control device 80 so that the valve shaft 60 rotates by a predetermined amount and the swirl valve 40 is gradually turned off. In the opening, the mixer is supplied with swirl flow to the cylinder side.

In this state, when the vehicle runs at a low speed, the opening amount of the swirl valve 40 is increased by the valve shaft 60 connected to the drive motor 62 by the electric control device 80 that receives the signal from the sensor 70. While increasing the swirl flow of the swirl blades 42 of the swirl valve 40 to the air flow, this increases the amount of air swirl flows into the combustion chamber 6 of the engine in Figure 3, when the tumble valve ( 30) is closed.

On the other hand, when the accelerator pedal 100 is stepped on to drive the vehicle at a high speed, the sensor 70 detects this and transmits a signal to the electric control device 80, and the electric control device 80 reads it and controls the swirl valve. The drive valve 62 is driven to close the swirl valve 40 connected to the valve shaft 50. On the contrary, the tumble valve control drive motor 52 is driven to connect the tumble valve 52 to the valve shaft 50. Will open as

Therefore, the airflow and the fuel that tumble into the tumble passage 21A at the high speed of the engine are mixed and supplied into the combustion chamber 6. At this time, since the length of the tumble passage 21A is short, the flow resistance of the intake air can be minimized to smoothly supply the amount of air required for engine combustion.

In this way, the tumble passage 21A and the swirl passage 22A formed in the branch runner pipes 21 and 22 of the intake manifold 20 are selectively selected so that the air flow is a high speed swirl flow of the engine. Increasing engine performance can be expected by inducing tumble flow.

In addition, since the length of the branch runner pipes 21 and 22 of the intake manifold 20 can be shortened, the intake manifold 20 can be made compact.

As described above, according to the present invention, the length of the branch runner pipe branched from the planar chamber of the intake manifold to the inlet port of the cylinder head allows the intake manifold to be compact, and at the same time, it supplies a mixer with a swirl flow at low engine speed This is possible and there is an advantage that the tumble flow of the mixer at high engine speed is improved.

Claims (2)

In the intake apparatus of a vehicle engine having an intake manifold (20) for introducing air sucked from the outside into the planar chamber (10) to mix with the fuel, and to distribute the mixed mixer to each combustion chamber of the engine, A plurality of pairs of branch runner pipes connected to the planar chamber 10 of the intake manifold 20 and branched into the tumble passage 21A and the swirl passage 22A and connected to the intake port of the cylinder head 5 again. And tumble valves 30 and swirl valves 40 are installed in the tumble passages 21A and the swirl passages 22A of the branch runner pipes 21 and 22, respectively. Each valve shaft 50, 60 is connected to the valve 30 and the swirl valve 40 to rotate the valves 30 and 40, and a drive motor for tumble valve control is connected to the valve shafts 50 and 60. 52 and the output shaft of the swirl valve control drive motor 62, respectively, and these drive motors 52 and 62 detect the stepped amount of the accelerator pedal 100, respectively. An engine intake apparatus for a vehicle, characterized in that the driving is controlled by an electric control unit (ECU) 80 which grasps the signal of the sensor 70 and the engine rotation state. 2. The engine intake of a vehicle according to claim 1, wherein the swirl valve (40) is formed by inserting a plurality of swirl blades (42) for converting the air flow into the swirl flow on both sides of the disk-shaped valve plate (41). Device.