KR20090102942A - A car fuel injection acid pollution fuel lubrication prevention filter ring control way - Google Patents

Abstract

PURPOSE: A contaminated fuel injection preventing method in injecting vehicle fuel is provided to facilitate management by additionally mounting each fuel filter on a fuel line between a fuel inlet and a cylinder tank. CONSTITUTION: A contaminated fuel injection preventing method in injecting vehicle fuel comprises an external fuel filter, and a separate external fuel filter. An external fuel filter(16b) is built in a fuel supply line. The fuel supply line transfers the fuel from the cylinder tank to an engine(30). The separate external fuel filter is installed between a fuel inlet(20) and the cylinder tank(10). The fuel is injected into the fuel inlet. The fuel is stored in the cylinder tank.

Description

A car fuel injection acid pollution fuel lubrication prevention filter ring control way}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the installation of a fuel filter for filtering impurities or foreign substances contained in fuel for stable combustion of an engine in a fuel system of an automobile vehicle, and more particularly, in a cylinder tank for storing fuel of an automobile. It is connected to the fuel supply line so that fuel is transferred to the engine, and a fuel filter that filters impurities or foreign substances contained in the fuel is installed in a fuel supply line or a cylinder tank, or mounted on a part of the engine. In the existing method, the fuel line between the fuel inlet and the cylinder tank was used to determine the cause of instability of the automobile engine by accurately and quickly identifying the inflow path of impurities or foreign substances contained in the fuel and the defects of the automobile parts. Additional fuel filters can be used for initial contamination The present invention provides a method of filtering and controlling fuel to prevent fuel from being injected.

In general, automotive engines are classified into gasoline engines and diesel engines according to the characteristics of fuels. LPG is also gradually being used in recent years according to the characteristics of fuels having high vaporization points. Recently, a method of injecting a liquid high pressure fuel directly into an engine through an injector has been used.

Looking at the combustion method and fuel input of the engine, the gasoline engine mixes fuel and air and puts it inside the engine, and when the piston is compressed, the spark plugs splatter sparks so that the fuel is combusted. The fuel is spontaneously ignited by putting it inside and by squeezing the piston and pumping the fuel inside the engine under high pressure.

However, in recent years, engines that are directly injected into some vehicles are gasoline engines, but engines such as diesel engines have been developed to provide efficiency by pumping air after inserting air into the engine.

In addition, the LPG fueled engines adopt the same method as described above. Unlike the existing LPG system, which pushes fuel only by the vapor pressure of the fuel, the LPG fuel is installed in a liquid tank. The method of spraying through the injector in the engine after the pressure is applied has been applied.

In other words, the LPI (Liquefied Petroleum Injection) system adopts a method of directly injecting LPG, which is fuel, into a combustion chamber through an injector in a liquid state, such as a gasoline vehicle, and does not use a vaporizer as in the conventional LPG system. Power performance is improved by supplying LPG to the combustion chamber under the control of the ECU through the injector.

The Intake Manifold Module (Intake Manifold Module) consists of an LPG injector and a high pressure fuel line.The injector is a boottom feed method, which supplies fuel to each cylinder through a needle sheet inside the injector through a filter on the fuel inlet side. The injector is configured to apply an icing tip during LPG fuel injection to freeze ambient moisture due to latent heat of vaporization during fuel injection to remove the effect on engine performance and exhaust gas.

Since the LPI system does not use a delivery pipe, a fuel line is connected between the injectors to distribute the fuel to each injector, and the remaining fuel may be sent to the bomb tank.

Therefore, in the case of directly injecting fuel into the engine, when a foreign substance or impurities are contained in the fuel, a stable combustion cannot be guaranteed. Therefore, a filtering method for removing impurities from the fuel supply line in advance has been very important.

On the other hand, the fuel system of the LPI vehicle is disclosed in Korean Patent Publication No. 10-0689081, and as shown in the accompanying Figure 1 basically LPG fuel is stored in the interior of the cylinder tank 10, LPG fuel is stored in liquid LPG A fuel pump 11 for pumping fuel is mounted, and the fuel pump 11 has a separate fuel filter 16a for filtration of foreign matter, but clogging due to impurities or foreign matter contained in the fuel is prevented. If it occurs, the fuel filter must be inspected or replaced. However, it was not easy to work because it is a built-in fuel filter mounted inside the fuel pump 11.

Therefore, an independent fuel filter 16b is installed in the fuel supply line 12 connected to the engine from the bomb tank 10 so as to freely inspect or replace the filter to filter out impurities or foreign substances contained in the fuel and injector 13. It was composed of a system that is injected into the combustion chamber 14 of the engine and the surplus remaining fuel is returned to the cylinder tank 10 through the fuel return line 15.

Meanwhile, the cylinder tank for storing fuel is generally manufactured by welding cylindrical carbon steel sheets of high pressure gas having a thickness of 3.2 mm or more in cylindrical shape, with a tensile strength test of 41 kg / cm 2 or more, 31 kg / cm 2 and an airtight test of 18.6 kg / cm 2. It satisfies the breaking test for each lot, and the inspection of the inside of the foreign material is inspected and managed through the magnifying microscope.

However, as described above, the fuel filter may be independently configured in the fuel line to filter out impurities or foreign substances contained in the fuel, thereby ensuring improved stability in combustion of the engine. However, impurities or foreign substances which have a serious adverse effect on the combustion of the engine may be substantially reduced. The data on where the oils are coming from, whether they were contained in the fuel from the beginning, or whether foreign matters remain in the fuel tanks that are manufactured during the production of the cylinder tank corresponding to the parts of the car and are introduced into the fuel injected is opaque. Due to the lack of information on which parts were causing problems, there were a lot of problems such as which parts to be checked and managed or where to be responsible for external factors or internal factors.

Therefore, the present invention is to provide a method for controlling by mounting a fuel filter for filtering impurities or foreign substances contained in the fuel for the stable combustion of the engine, which is supplied to the engine to be supplied fuel to the engine from the cylinder tank of the vehicle In the existing configuration in which a fuel filter is installed in the fuel supply line; Separate fuel filter is installed in the fuel supply line between the fuel inlet of the vehicle and the cylinder tank where fuel is stored to check and manage the fuel filter in each location to classify the amount and type of impurities according to the location. The purpose of this study is to identify and cure the causes of instability in the combustion of automobile engines by identifying inflow paths of foreign substances and defects of automobile parts.

The present invention described above can be inspected and managed by installing each fuel filter in the fuel supply line of the vehicle so that impurities checked in the fuel line before the bomb tank can be classified as being included in the fuel, and the fuel after the bomb tank. Impurities detected in the line can be found to be classified as defective removal of impurities remaining inside or at the time of manufacture of the bomb tank or defects due to corrosion, which has the advantage of effectively managing and identifying the cause.

Therefore, in case of automobile manufactured and assembled with each part, it is easy to grasp the material of which part by which it can be managed effectively, and it is also responsible for impurities contained in fuel by external factors rather than automobile parts. It has the advantages and effects to make the material clear.

In addition, it is possible to improve the stable combustion of the engine by preventing the initial injection of contaminated vehicle fuel.

In addition, as described above, it is possible to clearly check and manage problems and responsible materials in the handling of fuels and the management of automobile parts, thereby more effectively responding to the management of automobile fuel in the future.

1 is a schematic diagram illustrating a fuel system of a typical LPI vehicle.

2 is a block diagram of a conventional fuel system.

3 is a block diagram of a fuel system of the present invention.

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

10: cylinder tank 11: fuel pump

12 fuel supply line 13 injector

14 combustion chamber 15 fuel return line

16a, 16b, 16c: fuel filter 20: fuel inlet

30: engine 40: gas station

In the fuel system of an automobile vehicle for achieving the object of the present invention, the external fuel filter is installed in the fuel supply line for transporting the fuel from the cylinder tank of the vehicle to the engine to filter the impurities of the fuel; A separate external fuel filter is installed in the fuel supply line between the inlet for injecting fuel from the vehicle and the cylinder tank where fuel is stored to check and manage the fuel filter at each location to detect the inflow path of foreign substances and defects of the automobile parts. The purpose is to identify and cure the causes of instability in the combustion of automobile engines.

In addition, it is possible to improve the stable combustion of the engine by preventing the initial injection of contaminated vehicle fuel.

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

FIG. 1 is a schematic view showing a fuel system of a general LPI vehicle, and FIG. 2 is a schematic view showing a block diagram, and as shown in the drawing, a liquid phase is contained inside a cylinder tank 10 in which LPG fuel is stored. The fuel pump 11 for pumping the LPG fuel is mounted, and the fuel pumped by the fuel pump 11 is sent to the fuel supply line 12, and then through the injector 13 of the engine 30 through the combustion chamber ( 14) and the surplus fuel is returned to the cylinder tank 10 through the fuel return line (15).

In particular, the fuel supply line 12 employs an external fuel filter 16b, and the fuel filter 16b is directly fixed to the fuel supply line 12 or by a separate bracket (not shown). It is made of a structure that is fixed to.

As such, the configuration of the fuel filter 16b that can be detached independently from the fuel supply line 12 supplied to the engine 30 from the cylinder tank 10 filters the impurities, foreign substances, and water in the fuel to stabilize the combustibility of the fuel. Or to increase the efficiency, and to protect the engine 30 and injector 13 and fuel supply line 12 of the automotive parts.

In addition, there may be foreign substances or impurities remaining in the inside of the cylinder tank 10 during manufacture, and corrosion may occur due to moisture in the fuel. Thus, the impurities are introduced into the engine 30 and are unstable in combustion. It was adopted to prevent it.

However, as described above, the fuel filter 16b for filtering impurities or foreign substances contained in the fuel simply serves to filter impurities of the fuel flowing into the engine 30 comprehensively, and the bomb tank 10 Since it is not possible to distinguish whether it is generated from within or contained in the fuel in the first place, a problem arises in which it is impossible to know where it is wrong.

Therefore, as shown in FIG. 3 of the present invention, the fuel filter 16b is installed in the fuel supply line 12 to supply fuel to the engine 30 by the fuel tank 10 of the automobile. And a separate fuel filter 16c is further installed and configured in the fuel supply line 12 between the injection hole 20 for injecting fuel of the vehicle and the cylinder tank 10 in which the fuel is stored, and the fuel filter 16b at each position. , 16c) to check and manage the amount and type of impurities according to the location, to classify the inflow path of foreign substances and the defects of the automobile parts, to accurately and quickly identify the cause of instability in the combustion of the car engine and to heal can do.

That is, the present invention can be inspected and managed by installing each fuel filter in the fuel supply line of the vehicle so that the impurities checked in the fuel line before the bomb tank can be classified as being included in the fuel, and the fuel after the bomb tank. Impurities detected in the line can be found to be classified as defective removal of impurities remaining inside or at the time of manufacture of the bomb tank or defects due to corrosion, which has the advantage of effectively managing and identifying the cause.

On the other hand, unlike the case of gasoline or diesel, the fuel inlet 20 should be interpreted as a filling valve (not shown) in the case of LPG or LNG.

Therefore, in case of automobile manufactured and assembled with each part, it is easy to grasp the material of which part by which it can be managed effectively, and it is also responsible for impurities contained in fuel by external factors rather than automobile parts. It has the advantages and effects to make the material clear.

In addition, as described above, it is possible to clearly check and manage the problems and responsible materials in the handling of fuels and the management of automobile parts, thereby more effectively responding to the management of automobile fuel in the future, and to prevent polluted fuel injected into the vehicle in advance. It will have advantages and effects.

In addition, when the fuel is managed as described above, a separate fuel filter may be installed in the storage tank in the service station 40 to be handled, or a synergy effect may be expected to manage the inflow of impurities or foreign substances from the refinery. Will be.

Claims (2)

In a fuel system of an automobile vehicle, An external fuel filter is installed in a fuel supply line for transferring fuel from a bomb tank of an automobile to a engine; Installing a separate external fuel filter in a fuel supply line between an injection hole for injecting fuel of a vehicle and a cylinder tank in which fuel is stored; Sequentially checking and managing fuel filters in each location to classify the amount and type of impurities and foreign substances according to the location; Control method for preventing polluted fuel injection during vehicle fuel injection, characterized in that for distinguishing the inflow path of the impurities and foreign matter and the defects of the automotive parts. The method of claim 1, The installation of a separate external fuel filter in the fuel supply line between the injection hole for injecting the fuel of the vehicle and the cylinder tank in which the fuel is stored is included in any one of LPG or a fuel system using gasoline or diesel fuel. A method for controlling polluting fuel refueling during vehicle fuel injection.