KR20100038259A

KR20100038259A - Used an automobile internal pressure the test method of the big distant rail injector test roof tile

Info

Publication number: KR20100038259A
Application number: KR1020080097443A
Authority: KR
Inventors: 조봉조; 황성일
Original assignee: 조봉조; 황성일
Priority date: 2008-10-04
Filing date: 2008-10-04
Publication date: 2010-04-14

Abstract

PURPOSE: A device and a method for testing a common rail injector using internal pressure of a vehicle are provided to simplify the testing device by performing a test using power and pressure of a diesel vehicle. CONSTITUTION: A method for testing a common rail injector using internal pressure of a vehicle is as follows. An injector is operated when high-pressure fuel is supplied to a fuel supply part of the injector. The amount of fuel sprayed from an injector nozzle is measured. It is determined whether the injector has a defect.

Description

Common rail injector tester using the internal pressure of the vehicle and its test method {Used an automobile internal pressure the test method of the big distant rail injector test roof tile}

The present invention relates to a novel common rail injector test method and a test apparatus for performing a common rail injector test using a fuel supply pressure inside a diesel engine vehicle.

Common rail injection and common rail direct injection engines (Common Rail Direct Injection Engine) is a direct injection method that directly injects fuel into the combustion chamber by controlling the fuel suitable for the operating state by the ECU (Electronic Control Unit),

High combustion efficiency, good output, greatly reduce emissions of harmful substances, low noise and vibration, excellent ride comfort,

In particular, it is possible to control injection pressure, injection amount, injection rate, and injection timing independently of each engine regardless of the number of revolutions of the engine.

In addition, since the engine and fuel injection means can be independently configured and operated, considerable advantages that can contribute to the ease of design and the size and weight of the engine are recognized, and the demand is rapidly increasing.

However, the common rail injector has high performance, but fatal defects (rising friction resistance, debris formation, nozzle clogging, malfunction, breakage, etc.) occur when the fuel injected into the engine combustion chamber contains a small amount of water or other foreign matter. The disadvantage is that frequent repair during use is inevitable.

To solve this problem, up to now, it is best to check the common rail injectors installed in diesel differentials at any time, and if any abnormality is found, it is best to quickly clean the repair or repair it, and replace it with another injector of remanufactured good quality.

In addition, the conventional diesel car common rail injector tester (inspection equipment for defects) has been developed by many companies after developing various structures, but most of them are quite expensive, so they are purchased and installed in a small vehicle repair and maintenance shop. I can't even make it

Therefore, it is urgent to supply small / low-cost testers suitable for reality without making a big difference in function and performance.

That is, the conventional common rail injector tester is quite complicated such as test fuel and fuel container, high pressure pump, fuel filter, pressure regulator, branch valve, etc. required for the injector test, automatic semi-automatic control electronic control means, and other piping lines. In addition to the high cost of construction and construction of the equipment, the volume of the equipment was also unnecessarily large.

In addition, the complex configuration has a considerable problem of causing additional losses such as frequent failures and repairs, and at the same time, adversely affecting handling, maintenance and operation operability.

Therefore, the present invention was devised to solve the above-mentioned problems. As a result, when using the common rail injector for defect testing, the diesel vehicle itself power and power are not used. Test work can be carried out using pressure, simplifying, miniaturizing, and inexpensive test equipment, and even performing preliminary testing on defects of the injector without removing the injector mounted on the vehicle. It is a technical task that focuses on providing a new method of common rail injector test method and device that can greatly contribute to maximizing the efficiency of rail injector test work.

The present invention for achieving the above technical problem is to operate the injecting in the state of supplying the high-pressure fuel to the fuel supply of the separate type common rail injector separated from various diesel differential vehicles, at this time by measuring the amount of fuel injected from the inject nozzle In the conventional separate common rail inject test method for finally determining abnormality or coupling (nozzle clogging, failure, etc.), when supplying the high pressure fuel to the fuel supply part of the separate common rail injector, The vehicle's own high-pressure fuel, which is moved from the rails to the in-vehicle injectors, is drawn and tested.

As described above, the common rail injector tester using the internal pressure of the vehicle and the test method thereof do not generate separate power or high pressure when testing the separate common rail injector separated from the vehicle. By making it simple and easy to use, it is a useful invention that can be widely distributed at a low cost to a small auto repair shop, as it can minimize the structure and size of the tester, and in particular, reduce the manufacturing and installation costs superior to the existing ones.

Hereinafter, a common rail injector tester using the internal pressure of the present invention and a test method thereof will be described in detail with reference to the accompanying drawings.

That is, as shown in 1, on one side of the body 110, a detachable injector fixing part capable of fixing the detachable common rail injector 110 separated from other diesel vehicles 100 according to the necessity of the test ( 20),

The injector nozzle insertion groove 121 at the top of the fixed portion 20 collects the high-pressure fuel injected from the separate common rail injector 210 and discharges the collected fuel downward. The high pressure fuel collection container 120 having a 122 is provided,

Below the high pressure fuel collection container 120 is installed a measuring beaker 130, which is scaled to accurately measure the amount of fuel injected from the separate common rail injector 210,

The recovery plate 150 and the fuel container 160 are provided at the lower side of the measuring beaker 130 so that the empty fuel is collected and collected at the lower side thereof.

A return fuel recovery pipe 170 for recovering the returned fuel is connected between the fuel storage cylinder 160 and the return unit 111 of the separate common rail injector 110,

The other end of the body 10, the separate common rail injector 110 is provided with a control control panel 180 for supplying signals and connecting signals for electrical and electronic control control of the separate common rail injector 110 Install the means 100,

One side of the split common rail injector 210 is connected to the fuel supply 111 of the split common rail injector 210.

The other side of the vehicle is provided with a high-pressure pull-out pipe 10 having a high-pressure fuel take-out groove 11 for the high-pressure fuel withdrawal inside the car,

The high-pressure fuel outlet groove 11 of the high-pressure fuel outlet pipe 10 of the vehicle may be connected between the high-pressure output unit 221 of the internal common rail 220 and the high-pressure fuel supply unit 231 of the vehicle injector 230. It is characterized in that it is provided by the vehicle high-pressure pull-out means 30 is provided with the high-pressure draw connection pipe 20 having the car common rail coupling portion 21 and the vehicle injecting coupling portion 22.

The measuring beaker 130 may be mounted on the beaker tilt device 140 which may be inclined at a predetermined angle according to a user's operation to easily empty the internal fuel contained in the beaker 130 after the test as shown in the drawing. have.

And the other side of the body 110 is provided with a measuring beaker 410, the upper end of the beaker 410 is provided with a return hose coupling portion 420, the return hose coupling portion 420 is a car Connect the return unit 232 and the return take-out hose 430 of the common rail injector 230 mounted inside the vehicle to measure the linton fuel of the vehicle injector, and based on this, the defect on the vehicle injector It is also possible to further install a return test device 400 of the in-vehicle inject to enable the preliminary estimation of the presence.

In addition, when combining the high-pressure withdrawal connection pipe 20 of the vehicle high-pressure fuel extraction means 30, the car itself high-pressure fuel connection already built between the car interior common rail 220 and the car interior injector 230 Remove the tube 240 first,

The high pressure draw connection pipe 20 is used to connect, and after use, the high pressure draw connection pipe 20 is removed, and the vehicle itself can be easily realized by returning and installing the high pressure fuel connection pipe 240 as it is. It is.

In addition, the return withdrawal hose 430 of the injector return test apparatus 400 of the automobile may also be removed by replacing the return hose 440 provided in the vehicle and then replaced and used in place during the return test. When the return test is finished, the return withdrawal hose 430 may be removed and the original return hose 440 fitted inside the vehicle may be returned.

Hereinafter, the common rail injector test method of the present invention will be described.

First, the injector is operated while the high pressure fuel is supplied to the fuel supply unit of the split type common rail injector separated from various diesel differential vehicles, and at this time, the amount of fuel injected from the inject nozzle is measured to determine whether it is abnormal or not. In the common split type common rail inject test method for final determination of a failure, etc.,

When the high-pressure fuel is supplied to the fuel supply unit of the split common rail injector, the high-pressure fuel of the vehicle moved out from the common rail inside the diesel vehicle to the in-vehicle injector is characterized in that the supply is made.

As described above, the common rail injector tester using the vehicle interior pressure and the test method thereof may be configured as described above.

Basically, the high-pressure fuel required for the test operation of the common rail injector is drawn out and used as a high-pressure fuel that is equipped and retained in an automobile engine without having to prepare a separate device of considerable cost and complicated configuration as before.

Not only can the size of the common rail injector tester be significantly reduced, it also eliminates many components such as fuel and fuel tank, high pressure pump, fuel filter, pressure regulator, branch valve, etc. Therefore, it is a useful invention that a groundbreaking solution is provided to simplify the tester's miniaturization and low-cost implementation.

Claims

One side of the body 110 is provided with a detachable injector fixing part 20 capable of fixing the detachable common rail injector 110 in a state separated from other diesel vehicles 100 according to the necessity of the test. The injector nozzle insertion groove 121 at the top and the fuel outlet groove 122 at the bottom of the government 20 collect the high pressure fuel injected from the separate common rail injector 210 and discharge the collected fuel downward. A high pressure fuel collecting container 120 having a) is provided, and a measuring beaker (scaled) is provided at the lower side of the high pressure fuel collecting container 120 so as to accurately measure the amount of fuel injected from the separate common rail injector 210 ( 130 is provided, and the recovery plate 150 and the fuel storage cylinder 160 are provided at the lower side of the measuring beaker 130 so that the empty fuel can be collected and collected underneath, and the fuel storage cylinder 160 and Detachable Common Rail A return fuel recovery pipe 170 for recovering the returned fuel is connected between the return parts 111 of the ejector 110, and the separate common rail injector 110 is connected to the other end of the body 10. To install a separate common rail inject test means 100, which is provided with a control control panel 180 for signal supply and signal connection for electrical and electronic control control,

One side of the separate common rail injector 210 is connected to the fuel supply 111 of the separate common rail injector 210, and the other side of the high pressure fuel extraction groove for drawing the high pressure fuel inside the vehicle ( 11 is provided with a high-pressure car withdrawal pipe 10 having a high-pressure fuel extraction groove 11 of the high-pressure car withdrawal tube 10, the high-pressure output unit 221 and the car injector of the common rail 220 inside the car Automobile high pressure fuel provided with a high-pressure outgoing connection pipe 20 having a car common rail coupling part 21 and a car injecting coupling part 22 so as to connect between the high-pressure fuel supply part 231 of 230. Common rail injector tester using the internal pressure of the vehicle, characterized in that the installation means for taking out (30).

The method of claim 1,

The other side of the body 110 of the separate common rail injector test means 100 is provided with a measuring beaker 410, the upper end of the beaker 410 is provided with a return hose coupling portion 420, The return hose coupling unit 420 is connected to the return unit 232 and the return take-out hose 430 of the common rail injector 230 mounted inside the vehicle to measure the linton fuel of the injector inside the vehicle. The common rail injector tester using the internal pressure of the vehicle, characterized in that the additional installation of the return test device 400 of the vehicle injector to preliminarily estimate the presence or absence of defects on the vehicle injector.

Operate the injector while supplying high rolling material to the fuel supply section of the split type common rail injector separated from various diesel differential vehicles, and measure the amount of fuel injected from the inject nozzle. In the conventional separate common rail inject test method for final determination,

When the high pressure fuel is supplied to the fuel supply unit of the split common rail injector, the common vehicle using the internal pressure of the vehicle is characterized in that the high-pressure fuel is drawn out from the common rail inside the diesel vehicle and is supplied to the vehicle. Rail injector test method.