KR19990052117A - Apparatus and method for measuring oil deposit of piston ring groove - Google Patents

Abstract

The present invention relates to an oil deposition amount measuring device and method of the piston ring groove to prevent the waste of costs and to improve the reliability of the test data by allowing the test of various changes in a short time under the same conditions as the actual vehicle. In the present invention, the transparent film 11 is installed on the front surface so that the inside is visible and the test box 10 having the chamber 12 installed on one side so as to provide a temperature in the same condition as the inside of the cylinder of the engine, It is installed on the bottom of the test box 10 and installed to be inclined to one side, the specimen support 20 with the heater 21 to provide a high temperature heat generated during operation of the piston inside, and the specimen support The test sample 30 is installed on the upper surface of the 20 and the temperature is controlled by the heater 21 and is manufactured in the same manner as the material of the actual piston, and is installed on the upper side of the test box 10. An oil leak pipe 40 for supplying oil to the test sample 30 in the same manner as in a vehicle, and an oil leakage amount of the oil leak pipe 40 is adjusted, and thus, the chamber 12 and the heater 21 Controllers I and II (50, 51) respectively installed outside the test box 10 to adjust the temperature, and the display 60 for outputting the data measured by the controllers I, II (50, 51) Configure.

Description

Apparatus and method for measuring oil deposit of piston ring groove

The present invention relates to a method for measuring oil deposition amount of a piston ring groove for a vehicle, and in particular, it is possible to test various changes in a short time under conditions such as a real vehicle, thereby preventing waste of costs and increasing reliability of test data. The present invention relates to an apparatus and a method for measuring oil deposition amount of a piston ring groove.

In general, an engine is installed in a vehicle to provide driving power, and a piston is installed inside a cylinder of the engine to explode fuel and air while the piston moves up and down to allow the engine to have driving power.

Since the piston must compress the fuel in order to induce the explosion of the fuel, there should be no gap between the outer circumferential surface of the piston and the inner wall of the cylinder.

Therefore, a plurality of grooves are formed above the outer circumferential surface of the piston, and the piston ring is provided in the groove to be rubbed with the inner wall of the cylinder, so that the piston ring can obtain a sealing effect while rubbing the inner wall of the cylinder. The structure of such a piston is shown in FIG.

As shown in FIG. 1, the piston 1 forms a plurality of grooves 2 on the upper outer circumferential surface thereof, and installs circular piston rings 3 on the grooves 2, respectively, so that the piston 1 is operated up and down. When the piston ring 3 is compressed by sliding the inner wall of the cylinder (not shown).

However, since the internal temperature of the piston 1 is increased due to the continuous reciprocating motion, the strength of the material is weakened, the strength and wear resistance are lowered, and the carbon deposit is increased.

As described above, when the carbon deposit is increased, the consumption of oil is increased, harmful emissions are increased, problems such as cylinder bore parsing occur, and the engine performance is deteriorated, and the piston ring 3 is the inner wall of the cylinder. There was a problem that could cause the phenomenon to stick to.

Therefore, in the related art, each test was performed in order to know the influence factors in which deposits accumulate in the grooves 2 in which the top piston ring 3 is installed according to each type of engine. After continuous quenching for time-400 hours (depending on the vehicle), the engine was disassembled and the results measured.

However, in the conventional test, the method of measuring the deposition amount in the engine of an actual vehicle is first; Since the engine must be operated for a long time, there is a problem in that it takes a lot of time, manpower and cost for the test; Since it is difficult to independently grasp the effects of oil composition, blow-by gas amount, oil consumption, and piston temperature, various changes cannot be tested and accurate measurement data cannot be obtained.

Therefore, the present invention was devised to solve the above-mentioned conventional problems, and it is possible to test various conditions (independent tests) within a short time to prevent waste of time and cost, and to increase the reliability of measurement data. It is an object of the present invention to provide an apparatus and method for measuring oil deposition amount of a piston ring groove.

1 is a perspective view showing a groove and a piston ring of a typical piston;

Figure 2 is a schematic configuration diagram showing an oil deposition amount measuring device of the present invention.

Figure 3 is a block diagram showing a method for measuring the oil deposition amount of the present invention.

Explanation of symbols on the main parts of the drawings

One ; Piston 2; Groove

3; Piston ring 11; Transparent film

12; Chamber 20; Specimen Support

21; Heater 30; Test sample

40; Oil leak lines 50, 51; Controller I, II

60; display

In order to achieve the above object, the apparatus of the present invention is provided with a test box having a chamber installed on one side of the upper part so that the inside is visible by installing a transparent film on the front surface and providing the same temperature as the inside of the cylinder of the engine; It is installed on the bottom of the specimen and installed to be inclined to one side, and a specimen support with a heater installed to provide a high temperature heat generated during operation of the piston inside, and installed on the upper surface of the specimen support, the temperature is controlled by the heater And a test sample manufactured in the same manner as the material of the actual piston, an oil leak pipe installed at one side of the test box, and configured to supply oil to the test sample as in a vehicle, and an oil leak amount of the oil leak pipe. Installed on the outside of the test box to adjust the temperature of the chamber and the heater And a display for outputting the data measured by the controllers I and II.

According to the method of the present invention, the oil leakage amount adjusting step (I) for checking the displacement of the oil deposit while adjusting the leakage amount of the oil falling on the test sample, and the groove temperature of the test sample while adjusting the temperature of the specimen support are adjusted. Groove temperature adjustment step (II) for checking the displacement, and chamber temperature adjustment step (III) for adjusting the temperature of the chamber to check the displacement of oil deposits according to the actual temperature change between the piston and the piston ring; An oil selection step (IV) for changing the type of oil leaking into the test sample to check the displacement of the oil deposit, and an output step (V) for calculating and displaying data measured under the changed conditions for each step. Characterized in that made.

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

As shown in FIG. 2, the present invention provides an engine by installing a chamber 12 on an upper side of a test box 10 in which a transparent membrane 11 is installed on a front surface so that a tester can visually check a change in a test from the front. It is possible to provide the same temperature as the inside of the cylinder.

At the bottom of the test box 10, a specimen support 20 is installed to be inclined to one side, but a heater 21 is installed inside the specimen support 20 to provide high temperature heat generated during operation of the piston. Do it.

On the upper surface of the specimen support 20 is installed a test sample 30 made in the same manner as the material of the piston so that the temperature is controlled by the heater 21 and the oil deposits can be accumulated.

An oil leak pipe 40 is installed on one side of the test box 10 to supply oil to the test sample 30 as in a vehicle.

Controllers I and II (50, 51) are installed outside the test box 10, and the controller I (50) is connected to the oil leak pipe (40) to adjust the oil leakage of the oil leak pipe (40). In addition, the controller II (51) is connected to the chamber 12 and the heater 21 to adjust the temperature of the chamber 12 and the heater 21 according to the test method.

In addition, the controllers I and II (50 and 51) are connected to the display 60 to output data measured by the controllers I and II (50 and 51).

The method of the present invention manipulates controller I (50) to regulate the displacement of oil deposits generated on the surface of test sample (30) while controlling the amount of oil falling from oil leak tube (40) to test sample (30). . (Ⅰ)

In addition, by controlling the temperature of the heater 21 of the specimen support 20 by operating the controller II (51), the groove temperature of the test sample 30 is adjusted to adjust the displacement of the oil deposit generated on the surface of the test sample 30. I book it. (Ⅱ)

In addition, the controller II (51) is operated to adjust the temperature of the chamber 12 and to detect the displacement of the oil deposit generated on the surface of the test sample 30 in accordance with the actual temperature change between the piston and the piston ring. (Ⅲ)

The type of oil leaking to the test sample 30 is changed to check the displacement of the oil deposit generated on the surface of the test sample 30. (Ⅳ)

After completing the step-by-step test as described above, the data measured under the conditions changed for each step is calculated and output to the display 60. (Ⅴ)

Looking at the state of use of the present invention configured as described above are as follows.

The tester manipulates the controller I 50 to adjust the amount of oil falling on the test sample 30 while checking the displacement of the oil deposit generated on the surface of the test sample 30 to output the measured value to the display 60. (Ⅰ, Ⅴ)

After the test for adjusting the oil leakage amount as described above, the controller II (51) is operated to increase the heater (21) temperature of the specimen support (20), and by the heater 21 of the test sample (30) As the temperature is changed, the displacement of the oil deposit generated on the surface of the test sample 30 is checked, and the measured value is output to the display 60. (II, V)

After the test by the temperature change of the test sample 30 as described above, while operating the controller II (51) to increase the temperature of the chamber 12, the test sample in accordance with the actual temperature change between the piston and the piston ring The displacement of the oil deposit generated on the surface of 30 is checked to output the measured value to the display 60. (Ⅲ, Ⅴ)

After the test by the temperature change of the chamber 12 as described above, while changing the type of oil leaking to the test sample 30, the displacement of the oil deposit generated on the surface of the test sample 30 is checked to measure the measured value. Output to display 60. (IV, V)

At this time, the type of the oil is to use the used oil and the new oil that the difference in viscosity using a certain period of time.

As described above, the present invention provides an apparatus and a method for measuring the oil deposition amount of a piston ring groove, so that tests of various conditions (independent tests) can be performed in a short time, thereby preventing waste of time and money, This is to increase the reliability of the measurement data.

Claims (2)

The test box is installed on the upper side of the test box so that the inside can be seen by installing a transparent film on the front side and to provide the same temperature as the inside of the cylinder of the engine, and installed on the bottom of the test box and inclined to one side. A test piece which is installed on the specimen support with a heater to provide high temperature heat generated when the piston is operated inside, and installed on the upper surface of the specimen support, whose temperature is controlled by the heater and manufactured in the same manner as the actual piston material. An oil leak pipe installed at an upper portion of the sample, one side of the test box, and configured to supply oil to the test sample in the same manner as in a vehicle; and an oil leakage amount of the oil leak pipe is adjusted and temperature of the chamber and the heater is adjusted. In the controllers I, II and the controllers I, II which are respectively installed on the outside of the test box to adjust An oil deposition amount measuring device of a piston ring groove, comprising a display for outputting measured data. An oil leakage adjustment step that controls the oil deposits falling on the test sample while adjusting the oil deposits, and a groove temperature that controls the oil deposits by adjusting the groove temperature of the test sample while controlling the temperature of the specimen support. Adjusting the temperature of the chamber, adjusting the temperature of the chamber, and adjusting the temperature of the oil deposit according to the actual temperature change between the piston and the piston ring; and adjusting the type of oil leaking into the test sample. An oil selection step of measuring the displacement of the deposit, and an output step of calculating and displaying the data measured under the conditions changed for each step, the oil deposition amount measuring method of the piston ring groove.