KR19980045363A - Supercharged air supply control device - Google Patents

Abstract

The present invention is a supply control device for charging air having a structure in which the air charged by the supercharger can be directly supplied to the engine without passing through the intercooler at all when the vehicle starts or accelerates. A supercharger for supercharging the air sucked through the air and supplying it to the combustion chamber of the engine; An intercooler installed between the supercharger and the combustion chamber to cool the air charged in the supercharger; A first control valve installed in a passage through the intercooler from the supercharger; A second control valve installed in a bypass passage from the supercharger to the combustion chamber of the engine and installed to have a phase difference of 90 ° with the first control valve; A rotary solenoid valve installed to control the communication of the charged air by simultaneously adjusting the first and second control valves according to the rapid start or acceleration signal of the vehicle and the bypass control unit which drives the first and second control valves by the boost pressure. It includes.

Description

Supercharged air supply control device

1 is a schematic illustration of a conventional supercharger system.

2 is a schematic illustration of a conventional supercharger system with a bypass passage.

3 is a view schematically showing a supercharger system according to the present command.

4 is a schematic view showing a control barrel in which the supercharger system shown in FIG. 3 is installed.

5 is a view showing a connection structure of the valve and the rotary solenoid valve shown in FIG.

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

1: Supercharger 2: Intercooler

6: combustion chamber 7: bypass passage

8: first control valve 9: second control valve

10: cooling passage 11: rotary solenoid valve

12: valve case 13: connecting member

[TECHNICAL FIELD OF THE INVENTION]

The present invention relates to a supercharger, and more particularly, to a control apparatus for supplying supercharged air having a structure in which supercharged air can be sucked directly into an engine without passing through an intercooler during a sudden start or acceleration of a vehicle.

[Prior art]

Typically, the supercharger is an air pump installed in the intake manifold to improve the engine output of the vehicle, and the engine without the supercharger cannot suck the mixer with the vacuum generated in the lower stroke of the piston to obtain an improvement in output. Therefore, by installing an air pump called a supercharger, a large amount of air is forcibly supplied to the cylinder to increase the engine output, torque, and fuel economy.

1, there is schematically shown a conventional supercharger system. The supercharger 1 has a crank pulley (not shown) connected to a crankshaft (not shown) of the engine and a drive pulley of the supercharger 1 connected to each other via a belt, and the drive pulley of the supercharger 1 is Receiving the rotational force of the crank pulley, the air is sucked through the air cleaner 3 and the air flow meter 4 by the drive pulley of the supercharger 1 and is supercharged in the supercharger 1. The air charged in the supercharger 1 is supplied to the combustion chamber 6 of the engine via the intercooler 2 and the intake manifold 5.

On the other hand, the intercooler 2 is installed to cool the air whose temperature is increased in order to prevent knocking since the temperature is increased and the knocking may be generated when the air is compressed in the gasoline engine. Also in diesel engines, an intercooler 2 is provided to cool the air for recovery of the air density in order to prevent a decrease in the output of the engine due to a decrease in the air density.

However, the conventional supercharger system as described above is equipped with an intercooler in order to prevent knocking due to supercharging and to improve the heat load of the engine. However, the intercooler is mounted on the intercooler when the vehicle suddenly starts or accelerates. Since the gas is filled and supplied to the engine, the engine output decreases while the intercooler is filled, that is, a response delay phenomenon occurs due to the volume of the intercooler.

In order to solve this problem, as shown in FIG. 2, the bypass passage 7 for directly supplying the supercharged air from the supercharger 1 to the combustion chamber 6 of the engine when the vehicle starts or accelerates. Is provided, and a control valve 8 is provided in the bypass passage 7.

Therefore, in the case of sudden start or acceleration of the vehicle, the control valve 8 provided in the bypass passage 7 is opened in order to supply the air charged in the supercharger 1 directly to the combustion chamber 6 of the engine, and the intercooler ( The air passing through the passage 9 (hereinafter, referred to as a cooling passage) provided with 2) acts as a resistance by the intercooler 2 itself, so that the air charged in the supercharger 1 passes through the cooling passage 9 through the combustion chamber ( 6), most of the supercharged air was intended to be supplied to the combustion chamber 6 through the bypass passage 7.

[Technical problem to be achieved]

However, the conventional supercharger system in which the control valve is installed in the bypass passage as described above has a problem that the efficiency cannot be increased as intended because some supercharged air is supplied to the combustion chamber through the cooling passage.

Accordingly, an object of the present invention relates to a supply control device for charging air having a structure in which the air charged by the supercharger can be supplied directly to the engine without passing through the intercooler at all when the vehicle starts or starts suddenly.

[Configuration and Function of Invention]

The above object includes: a supercharger for supercharging the air sucked through the air cleaner and the air flow meter, and supplying the air to the combustion chamber of the engine; An intercooler installed between the supercharger and the combustion chamber to cool the air charged in the supercharger; A first control valve installed in a passage through the intercooler from the supercharger; A second control valve installed in a bypass passage from the supercharger to the combustion chamber of the engine and installed to have a phase difference of 90 ° with the first control valve; A rotary solenoid valve installed to control the communication of the charged air by simultaneously adjusting the first and second control valves according to the rapid start or acceleration signal of the vehicle and the bypass control unit which drives the first and second control valves by the boost pressure. It is to provide an apparatus for controlling supply of charge air according to the invention, comprising a.

As described above, according to the supply control apparatus of the charge air according to the present invention, since the control valve is installed not only in the bypass passage but also in the cooling passage in which the intercooler is installed, the air charged by the supercharger directly passes without passing through the intercooler at all. Since it can be supplied to the engine, the efficiency can be increased by what is intended, so that problems occurring in the conventional supercharger system can be solved.

EXAMPLE

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

3 is a view schematically showing a supercharger system according to the present invention. As can be seen from FIG. 3, in the supercharger system according to the present invention, air sucked through the air cleaner 3 and the air flow meter 4 is supercharged in the supercharger 1, and at this time, it is sucked from the outside. The air is compressed by the supercharger 1 during the supercharging to become a high pressure and at the same time the temperature is raised.

When the air charged in the supercharger 1 is supplied to the combustion chamber 6 of the engine, the intercooler 2 is installed between the supercharger 1 and the combustion chamber 6 in order to prevent knocking and to prevent thermal load of the engine. Is cooled. The first control valve 9 is provided in the passage 10 from the supercharger 1 through the intercooler 2. The first control valve 9 is always open in normal operation.

On the other hand, when the vehicle starts or accelerates, the combustion chamber of the engine from the turbocharger 1 can be supplied directly to the combustion chamber 6 of the engine without passing through the intercooler 2 when the vehicle is suddenly started or accelerated. In the bypass passage 7 formed to pass through (6), a second control valve 8 is installed to have a phase difference of 90 ° with the first control valve 9, and the first and second control valves ( 8, 9 are actuated by a rotary solenoid valve 11 connected to the first and second control valves 8, 9 via a connecting member 13. The first and second control valves 8, 9 and the rotary solenoid valve 11 are supported by the valve case 12, as shown in FIG. 5.

The rotary solenoid valve 11 rotates the 1st and 2nd control valves 8 and 9 to an angle of 90 degrees according to the signal of the engine control unit ECU as shown in FIG.

4 is a schematic diagram showing a control valve installed in the supercharger system shown in FIG. As shown in FIG. 4, the first and second control valves 8, 9 are provided by the connecting member 13 to have a phase difference of 90 °, and the connecting member 13 is a rotary solenoid valve 11. ). As described above, since the first and second control valves 8 and 9 have a phase difference of 90 ° from each other, when the first control valve 8 is opened, the second control valve 9 is in a closed state. The second control valve 9 is opened when the first control valve 8 is closed, the opening and closing operation of the first and second control valves 8, 9 is operated by a signal of the engine control device. It changes from 0 ° to 90 ° in accordance with the movement of the rotational solenoid valve 11 in the rotational direction.

[Effects of the Invention]

As described above, according to the supply control apparatus of the charge air according to the present invention, not only the bypass passage but also the control valve is installed in the liquid passage in which the intercooler is installed, and the control valves installed in the cooling passage and the bypass passage are mutually different. Since there is a phase difference of 90 °, according to each opening and closing operation of the control valve, the cooling passage or the bypass passage is completely open or closed, so that the air charged by the supercharger is intercooler when the vehicle starts or drops out. Since it can be supplied directly to the engine without going through at all, the efficiency can be increased by the intended, so that the output of the engine can be improved.

Claims (1)

A supercharger for supercharging the air sucked through the air cleaner and the air flow meter and supplying the air to the combustion chamber of the engine; An intercooler installed between the supercharger and the combustion chamber to cool the air charged in the supercharger; A first control valve installed in a passage through the intercooler from the supercharger; A second control valve installed in a bypass passage from the supercharger to the combustion chamber of the engine and installed to have a phase difference of 90 ° with the first control valve; A rotary solenoid valve installed to control the communication of the charged air by simultaneously adjusting the first and second control valves according to the rapid start or acceleration signal of the vehicle and the bypass control unit which drives the first and second control valves by the boost pressure. Supercharge air supply control device comprising a.