KR19990007275U - Intake system of automobile engine - Google Patents

Abstract

The present invention relates to an intake apparatus of an automobile engine, and in particular, to improve the performance and combustion characteristics of the engine by increasing the amount of air flowing into the intake port of the engine through the runner of the intake manifold at high speed of the engine, and exhausting The present invention relates to an intake apparatus of an automobile engine capable of reducing gas, and allows air taken in from outside to flow into a planar chamber 12 of an intake manifold 10 to pass through a plurality of runners 14. In the intake apparatus of an automobile engine in which the fuel injected from the injector 16 mounted to each of the runners 14 is mixed with air and distributed to the intake port 21 on the cylinder head 20 side of the engine, the intake air The first air passage 31 and the second air passage 32 are formed in each runner 14 of the manifold 10 and are divided by the runner partition wall 30 formed in the longitudinal direction of the runner 14. And second air cylinders of the respective runners 14. The furnace 32 is provided with a tumble control valve 40 which opens the second air passage 32 at high speed of the engine, and the tumble control valve 40 is configured to be driven and controlled by an electric control device of the vehicle. It is done.

Description

Intake system of automobile engine

The present invention relates to an intake apparatus of an automobile engine, and in particular, to improve the performance and combustion characteristics of the engine by increasing the amount of air flowing into the intake port of the engine through the runner of the intake manifold at high speed of the engine, and exhausting It relates to an intake apparatus of an automobile engine capable of reducing gas.

In general, the intake device of an automobile engine 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 to receive the outside air, and the one end of a plurality of runners corresponding to the number of cylinders is connected to the planetary chamber, and the other end of the runner is an intake port of each cylinder. And an injector, which is a fuel injection device, is mounted on the end side of each runner.

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, through each runner, air flows to the intake port side of the cylinder, and the fuel injected from the injector is mixed with the air. To be supplied to the cylinder.

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

Therefore, in order to solve this problem, a double runner is conventionally configured such that the runner of the engine has a long path at low speed and a short path at high speed, but this has a disadvantage in that the structure of the intake manifold is complicated and the manufacturing cost is increased. have.

The present invention has been devised in view of the above-mentioned circumstances, and improves the performance and combustion characteristics of the engine by increasing the amount of air flowing into the intake port of the engine through the runner of the intake manifold at high speed of the engine. It is an object of the present invention to provide an intake apparatus of an automobile engine capable of reducing the exhaust gas and reducing the exhaust gas.

Specific means of the present invention for achieving the above object, the fuel injected from the injector mounted to each of the runner at the same time while allowing the air sucked from the outside to enter the planar chamber of the intake manifold to pass through a plurality of runners 1. An air intake apparatus of an automobile engine configured to mix air with air and distribute the air to an intake port of a cylinder head side of an engine, the first air cylinder half-split by a runner partition wall formed in the longitudinal direction of the runner inside each runner of the intake manifold. And a tumble control valve which forms a furnace and a second air passage, and opens a second air passage at the high speed of the engine in the second air passage of each runner, and the tumble control valve is an electric control device of the vehicle (ECU). It characterized in that it is configured to drive control by).

1 is an installation state of the intake manifold according to an embodiment of the present invention.

2 is an assembled cross-sectional view showing an intake passage dividing wall formed in the intake port of the cylinder head;

Explanation of symbols for the main parts of the drawings

10 Intake manifold 12 Planum chamber 14 Runner

20: cylinder head 21: intake port 24: intake passage partition wall

30: runner partition wall 31: first air passage 32: second air passage

40: tumble control valve

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

1 is an installation state diagram of an intake manifold according to an embodiment of the present invention, Figure 2 is an assembled cross-sectional view showing an intake passage partition wall formed in the intake port of the cylinder head.

As shown in FIG. 1, the injector mounted in each of the runners 14 is introduced into the planar chamber 12 of the intake manifold 10 so as to pass through the plurality of runners 14. In the intake apparatus of an automobile engine in which the fuel injected from 16 is mixed with air and distributed to the intake port 21 on the cylinder head 20 side of the engine, each runner 14 of the intake manifold 10 is provided. The first air passage 31 and the second air passage 32 half-divided by the runner partition wall 30 formed in the longitudinal direction of the runner 14 are formed inside.

The second air passage 32 of each runner 14 is provided with a tumble control valve 40 for opening the second air passage 32 at high speed of the engine, and the tumble control valve 40 is provided in the vehicle. It is configured to drive control by an Electric Control Unit (not shown).

That is, the electric control device drives the unshown drive motor connected to the tumble control valve 40 at the initial start and low speed of the engine so that the tumble control valve 40 blocks the second air passage 32.

And the electric control device at high speed of the engine is to increase the opening amount of the tumble control valve 40 to increase the opening degree of the second air passage (32).

The joint surface 14A of the runner 14 is a divided section formed to assemble the tumble control valve 40.

The operating state of this embodiment configured as described above will be described.

First, when the engine is initially started and the engine is at low speed, the electric control device of the vehicle senses it from each sensor (not shown) to close the tumble control valve 40 to block the second air passage 32.

Therefore, the air in the planar chamber 12 of the intake manifold 10 is caused by the negative pressure in the cylinder 100 during the intake stroke of the engine along the first air passage 31 and the intake port 21 of the cylinder head 20. It is introduced into the cylinder 100 is sucked into.

On the other hand, when the engine rotates at a high speed, the tumble control valve 40 is opened by the electric control device that detects this.

Accordingly, the second air passage 32 on the runner 14 side of the intake manifold 10 is opened, and the air volume is sucked into the intake port 21 of the cylinder head 20 at approximately twice the low speed.

In this way, since the cross-sectional area of the second air passage 32 determines the flow rate at the high speed of the engine, this cross-sectional area can be determined in proportion to the horsepower of the engine.

As described above, a large amount of air is sucked in a tumble flow through a short path at high speed of the engine, so that performance may be improved in all areas of the engine, and combustion characteristics may be improved to reduce emission gas.

Meanwhile, according to the present invention, as shown in FIG. 2, the runner of the runner 14 in the passage 22 of the intake port 21 side of the cylinder head 20 communicating with the runner 14 of the intake manifold 10. The intake passage dividing wall 24 may be formed to extend in the dividing wall 30 so that the air flow passing through the tumble control valve 40 of the second air passage 32 may be the maximum tumble flow.

As described above, according to the present invention, two flow paths are formed in each runner of the intake manifold, and a tumble control valve for opening and closing one of the air paths is installed to control the air flow rate at low and high speeds of the engine. In particular, since the air flow is tumbled and sucked at high speed, the performance of the entire engine can be improved, and there is an advantage of reducing the stability of the combustion and the emission gas.

Claims (2)

The air sucked from the outside flows into the planar chamber 12 of the intake manifold 10 to pass through the plurality of runners 14 and is injected from the injectors 16 mounted to the respective runners 14. In the intake apparatus of an automobile engine in which fuel is mixed with air and distributed to the intake port 21 on the cylinder head 20 side of the engine, a runner 14 is formed inside each runner 14 of the intake manifold 10. The first air passage 31 and the second air passage 32, which are divided in half by the runner partition wall 30 formed in the longitudinal direction of the cross section, are formed, and the second air passage 32 of each of the runners 14 is formed. The tumble control valve 40 is installed in the second air passage 32 at high speed of the engine, and the tumble control valve 40 is configured to be driven and controlled by an electric control device of a vehicle. Intake device. The inlet port 21 side passage 22 of the cylinder head 20 in communication with the runner 14 of the intake manifold 10 is connected to the runner partition wall 30 of the runner 14. An intake apparatus for an automobile engine, characterized by forming an intake passage dividing wall 24 so as to extend.