KR20010076919A - Turbo charge system using variable exhoust pressure control valve - Google Patents

Abstract

PURPOSE: A turbo charger using a variable exhaust pressure adjusting valve is provided to apply a path to all areas of low, mid and high loads by adjusting the path depending on the area of exhaust pressure by a variable valve. CONSTITUTION: An intake pipe(7) and an exhaust pipe(4) are mounted in a combustion chamber(1) of an engine. A compressor(5) and a compressed air cooler(6) are installed on the intake pipe. A turbine(3) is set in the exhaust pipe to be operated by exhaust gas. An exhaust pressure adjusting valve(2) is controlled by an exhaust pressure sensor(8) and an adjusting valve controller(9). The valve opens/closes an exhaust gas discharge path including each exhaust gas discharge path(12,13,14) at low, mid and high load respectively. Exhaust gas is discharged through the exhaust pipe from the combustion chamber. A valve plate is rotated by a command of the adjusting valve controller, referring to data measured from the exhaust pressure sensor. Thereby, one of the plural exhaust gas discharge paths for each low, mid and high load is selected. The exhaust gas is discharged through the selected exhaust gas discharge path and then through the exhaust pipe with rotating the turbine. The compressor connected with the turbine sucks, compresses and blows air to a cooler(6). Therefore, the cooled air is supplied to the combustion chamber through an intake port.

Description

Turbocharge system using variable exhoust pressure control valve

The present invention is directed to a supercharge system using a variable exhaust pressure control valve, in which a supercharge effect can be obtained in all types of areas such as low load, heavy load, and high load by a variable exhaust pressure control valve. It is about.

Supercharging refers to supplying air to the engine at a pressure higher than atmospheric pressure. Through supercharging, a large amount of air can be charged in an engine with the same displacement, and accordingly, increasing the injection amount of fuel improves the output of the engine. .

Turbocharger is a kind of blower, and for this purpose, as shown in Fig. 1, the turbine is rotated by the flow energy of the exhaust gas, and at the same time, the air is sucked by the rotating compressor and sent to the pressurized cylinder. It is supposed to be.

However, the turbocharger used in most internal combustion engines is divided into a specific area of exhaust pressure, that is, a low load, a heavy load or a high load, so that the supercharge effect can be obtained only in that specific area, and thus cannot be used in other areas.

The present invention eliminates this problem by providing a supercharger that can be used in all areas of low, medium and high load by adjusting the passage according to the exhaust pressure region by the variable variable valve, the supercharger to have an improved supercharging effect It is an object of the present invention to provide a system.

1 is an overall system explanatory diagram of the present invention

Figure 2 is a detailed view of the variable exhaust pressure valve portion of the present invention

<Description of the symbols for the main parts of the drawings>

1: engine combustion chamber 2: exhaust pressure regulating valve

3: turbine 4: exhaust pipe

5: compressor 6: compressed air cooler

7: intake pipe 8: exhaust pressure sensor

9: regulating valve controller 10: actuator

11: Westgate 12: Exhaust gas outflow passage at low load

13: exhaust gas outflow passage at heavy load 14: exhaust gas outflow passage at high load

Hereinafter, the configuration and operation of the present invention will be described in detail by the embodiments of the drawings.

Fig. 1 is an overall configuration diagram of the present invention, and Fig. 2 is an explanatory view of its main parts.

The engine combustion chamber 1 is equipped with an intake pipe 7 and an exhaust pipe 4, an intake pipe 7 is provided with a compressor 5 and a compressed air cooler 6, and the exhaust pipe 4 has exhaust gas. It is configured to operate the compressor 5 which is equipped with the turbine 3 operated by the electric.

The exhaust pressure regulating valve 2 is controlled by the exhaust pressure sensor 8 and the regulating valve controller 9 on the engine combustion chamber 1 side of the turbine 3 of the exhaust pipe 4, and the valve 2 ' Is selected to open and close the exhaust gas outlet passage composed of the exhaust gas outlet passage 12 at the low load, the exhaust gas outlet passage 13 at the heavy load, and the exhaust gas outlet passage 14 at the high load.

In the figure, reference numeral 10 denotes an actuator, and 11 denotes a west gate.

The supercharge system configured as described above discharges exhaust gas combusted in the combustion chamber (1) through the exhaust pipe (4), and the control valve controller (9) based on the data measured by the exhaust pressure sensor (8) installed in the exhaust pipe (4). The valve plate 2 'of the exhaust pressure regulating valve 2 is rotated according to the instruction of to select the low, heavy and high load exhaust gas outlet passages 12, 13 and 14.

The exhaust gas is exhausted through the exhaust pipe 4 while rotating the turbine 3 of the supercharger while exhausting through the exhaust gas outlet passage selected for its capacity.

At this time, the compressor 5 which is coaxially connected to the turbine 3 sucks and compresses the air in the atmosphere to be supplied to the cooler 6, and the air cooled by the cooler 6 is supplied to the combustion chamber through the suction port.

As described above, the present invention selects the exhaust pipe passage on the basis of the exhaust pressure according to the engine driving by mounting the variable valve to increase the exhaust pressure flowing through the rear passage of the variable valve than the pressure of the front end portion, so that the existing exhaust pressure cannot be driven. Not only can the turbocharger be rotated to obtain the supercharged effect, but also the supercharged effect can be seen in all areas of the engine, such as low, medium and high loads.

Claims (1)

The engine combustion chamber 1 is equipped with an intake pipe 7 and an exhaust pipe 4, an intake pipe 7 is provided with a compressor 5 and a compressed air cooler 6, and the exhaust pipe 4 has exhaust gas. In the supercharging system configured to operate the compressor (5) equipped with the turbine (3) operated by the exhaust gas, the exhaust pressure regulating valve (2) on the engine combustion chamber (1) side of the turbine (3) of the exhaust pipe (4). To be controlled by the exhaust pressure sensor 8 and the regulating valve controller 9, but the valve 2 'is lowered at the exhaust gas outflow passage 12, the heavy exhaust gas outflow passage 13, and the high load. A supercharge system using a variable exhaust pressure regulating valve, characterized in that for selectively opening and closing the exhaust gas outlet passage consisting of the exhaust gas outlet passage (14).