KR20020041672A - Engine tilting test rig - Google Patents

Abstract

PURPOSE: An engine tilting test rig is provided to perform a tilting test by using only an engine itself during the stage of engine development, while obtaining an accurate analysis on the relationship between tilting angle of engine and behavior of engine oil. CONSTITUTION: An engine tilting test rig comprises an engine mounting bracket(10) for mounting an engine(200) as an object of the test; a pressure sensor for checking oil pressure of the engine; a rotatable support(20) disposed underneath the engine mounting bracket, and where the engine mounting bracket is attached onto the rotatable support, wherein the rotatable support is arranged to rotate in a left or right direction; a tilting plate(30) disposed underneath the rotatable support; a fixing pin(70) interposed between the rotatable support and the tilting plate, and which fixes the rotatable support to the tilting plate, to thereby cut off rotating motion of the rotatable support; a semi-circular gear(40) constituted by a mounting section forming the upper portion of the body of the semi-circular gear, and a gear section forming the lower portion of the body of the semi-circular gear, wherein the mounting section has the tilting plate attached onto the mounting section, and the gear section has entire area constituted by tooth wheel; a tilting gear(50) disposed beneath the semi-circular gear and engaged with the gear section of the semi-circular gear; a motor for rotating the tilting gear; and a test rig support(100) a lower portion of which is fixed to a bottom and an upper portion of which is coupled to the semi-circular gear. The test rig support has a hinge axis serving as a central axis with respect to the tilting movement of the semi-circular gear.

Description

Engine Tilting Test Rig

The present invention relates to an engine tilting test rig, and more particularly, an apparatus designed to measure the change of engine oil behavior and the effect of the engine oil behavior on the engine according to the tilting angle of the engine during the engine development stage. It is about.

In the case of a normal engine, the oil pressure value is determined to have an appropriate design value for normal lubrication at the friction part of the engine, which is almost changed only by the rotation speed of the engine. Therefore, it can be judged that the change in the oil pressure is a phenomenon in which air is mixed into the engine oil almost when the oil is insufficient or the engine is not broken. As such, the air mixed in the engine oil acts as a sponge and prevents the oil pump from operating.

As described above, the phenomenon in which air is mixed into the engine oil is called oil aeration.

When the engine starts to tilt, the oil pan's oil film is about to be level, so the oil film is tilted when viewed from the engine's point of view. In this state, air may be introduced into the oil flowing into the oil inlet.

At this time, if the air is not excessively mixed (weak oil aeration), the oil pressure is kept constant regardless of tilting. However, if the tilting angle is increased and there is excessive oil aeration from a moment, the oil pressure drops drastically.

Engine oil is supplied to the main engine parts of the engine, such as the valve train system and the crank train system, at the same time as the engine is started. If the oil is not supplied or the proper oil pressure is not maintained, the movement part will not be able to perform normal sliding motion, and eventually the engine will be damaged.

Therefore, it is very important to design and measure the range of tilting angle that can freely tilt the engine in the range where excessive oil aeration does not occur.

However, conventionally, the engine is not tilted by testing the driving, rapid cornering, rapid start, and sudden stop of the vehicle while the developed engine is installed in the vehicle, without performing the tilting test by the engine alone in the stage of developing the engine. After induction, the effect of engine oil behavior in the oil pan on the engine is indirectly estimated.

In this case, since the influence on the engine is generally caused by not only the behavior of the engine oil but also various other factors, it is very difficult to judge the influence caused by the engine oil's behavior purely. As a result, a large amount of test vehicles and test time are required to determine the behavior of the engine oil and the impact of the engine.

In addition, the tilting test of the engine while the engine developed in the past and the vehicle is actually running is much more time and cost than when the engine is driven with a dynamometer. In other words, the accuracy of the test results is much lower.

The present invention has been conceived to solve the problems of the prior art as described above, an object of the present invention can be a tilting test by the engine itself in the stage of developing the engine, through the test of the tilt angle of the engine and the engine oil It is to provide an engine tilting test rig that allows you to accurately determine behavioral relationships and their impact on the engine.

It is another object of the present invention to provide an engine tilting test rig that can produce an engine tilting test result efficiently and accurately even at low cost and time.

1 is a front view of an engine tilting test rig according to the present invention.

2 is a side view of the engine tilting test rig in accordance with the present invention.

* Brief description of symbols for the main parts of the drawings *

10: engine mounting bracket 20: rotating support

30: tilting plate 40: semi-circle gear

50: tilting gear

70: fixed pin 80: pressure sensor

90: tilting motor 100: test rig pedestal

200: engine

In order to achieve the above object, the present invention and the engine mounting bracket; A pressure sensor; A rotating pedestal; A tilting plate; A fixing pin; With semicircle gears; Tilting gear; A tilting motor; An engine tilting test rig including a test rig pedestal is provided.

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

1 is a front view of an engine tilting test rig according to the present invention, and FIG. 2 is a side view of an engine tilting test rig according to the present invention.

Each of the components included in the engine tilting test rig according to the present invention is a test rig pedestal 100, a tilting motor 90, a tilting gear 50, a semicircle gear 40, a tilting plate 30, from below. It is preferable that the fixing pin 70, the rotary base 20, the engine mounting bracket 10, the pressure sensor 80 in the order.

The engine mounting bracket 10 is for fixing the engine 200 which is the test target object to which the tilting test is performed by the engine tilting test rig according to the present invention.

Since the engine tilting test rig according to the present invention continues the tilting of the engine 200 mounted on the body back and forth, left and right or in any direction during the tilting test of the engine, the engine 200 There is a fear of leaving the body of the engine tilting test rig according to the present invention.

However, even if the vehicle 200 is actually mounted on the vehicle, even if the vehicle runs, suddenly corners, suddenly starts, or suddenly stops, the engine 200 does not have any behavior or position change, so the engine tilting test In this case, it is necessary to firmly bind the engine to the engine tilting test rig according to the present invention in order to maintain the same state as when driving the actual vehicle.

Since the engine mounting bracket 10 is used for the purpose of firmly binding the engine 200, various forms can be implemented without other limitations as long as the engine mounting bracket 10 achieves its own purpose. For example, various shapes, various materials, and the like may be applied to the engine mounting bracket 10. However, since the engine mounting bracket 10 needs to alleviate the impact applied to the engine 200 during the tilting behavior of the engine tilting test rig according to the present invention, a predetermined shock absorber 10a is required for this purpose. It is preferable to include).

Since the engine tilting test according to the present invention is performed while the engine 200 is actually driven, the intake pipe 200a and the exhaust pipe 200b are connected to the engine 200 in the same manner as in the case of a normal vehicle. .

In addition, a pressure sensor 80 is attached to the engine 200. The pressure sensor 80 is a pressure of an engine oil generated by an engine oil inside an oil pan when the engine 200 performs a tilting motion. It checks for changes.

The rotary pedestal 20 is positioned below the engine mounting bracket 10, and the engine mounting bracket 10 is attached to an upper surface of the rotary pedestal 20.

The rotating pedestal 20 has a structure capable of rotating in a left or right direction about the center of the engine tilting test rig according to the present invention in a state where the engine 200 is attached or detached.

The tilting plate 30 is positioned below the rotary pedestal 20, and the semicircular gear 40 is attached to the lower surface of the tilting plate 30. Since the tilting plate 30 is fixedly attached to the semi-circular gear 40, it cannot rotate left and right.

The tilting plate 30 serves to block the rotational movement of the rotary pedestal 20 and simultaneously transmit the tilting movement of the semicircular gear 40 to the rotary pedestal 20 as it is.

The fixing pin 70 is positioned between the rotary pedestal 20 and the tilting plate 30, and serves to fix the rotary pedestal 20 to the tilting plate 30.

Although the rotating pedestal 20 has a structure capable of rotating in the left or right direction, the tilting state of the engine 200 is established by the engine tilting test rig according to the present invention. Since the rotating pedestal 20 should not rotate, it is necessary to rotate the rotating pedestal 20 at an arbitrary angle and then fix it. The fixing pin 70 performs the same function.

When the rotating pedestal 20 and the tilting plate 30 are connected to each other by the fixing pin 70, the rotating pedestal 20 of the rotating pedestal 20 is supported by the supporting action of the tilting plate 30 which is configured to not rotate in the left and right directions. Rotating movement is blocked.

The semi-circle gear 40 is a semi-circular gear, consisting of a gear portion 40a and the mounting portion 40b, and receives the rotational force of the tilting gear 50 to convert it into a tilting motion.

An encoder (not shown) is installed at the center of the semicircular gear 40 so that the tilting angle can be observed.

The gear portion 40a is a portion corresponding to the arc of the semicircular gear 40, and the entire region of the gear portion 40a is composed of gears.

The mounting portion 40b is a portion corresponding to the diameter of the semicircular gear 40 and the tilting plate 30 is mounted on the upper surface of the mounting portion 40b.

Combining the rotational motion of the rotating pedestal 20 and the tilting motion of the semicircular gear 40 can lead to a case in which the engine 200 is tilted in various directions.

The tilting of the vehicle in the lateral direction is mainly caused by cornering, the tilting of the vehicle forward is mainly caused by sudden stops, and the tilting of the vehicle backwards is mainly caused by rapid starting. However, if the semi-circular gear 40 is tilted left and right (named 'left' and 'right' for convenience of description) in the state set as shown in FIG. 1 or 2, the engine 200 has the same effect as when the vehicle is tilted in the transverse direction.

If, when the rotary pedestal 20 is rotated 90 ° in the state set as shown in FIG. 1 or 2 and then tilting the semi-circular gear 40 left and right, the engine 200 is tilted in the longitudinal direction of the vehicle You will get the same effect.

In addition, when the rotary pedestal 20 is rotated at an angle in the state set as shown in FIG. 1 or 2 and the tilting of the semicircular gear 40 to the left and right, the engine 200 is the vehicle in any direction The same effect as when tilting is achieved.

The tilting gear 50 is positioned below the semicircular gear 40 and is engaged with the gear part 40a of the semicircular gear 40 to drive each other.

The tilting gear 50 and the semicircular gear 40 are installed in pairs on both sides of the engine tilting test rig according to the present invention in order to prevent the stable driving of the gear and the twisting of the hinge shaft of the test rig pedestal 100. It is preferable to.

The tilting motor 90 serves to rotate the tilting gear 50.

The test rig pedestal 100 is an element supporting the entire engine tilting test rig according to the invention.

The lower portion of the test rig pedestal 100 is fixed to the bottom, the upper portion of the test rig pedestal 100 has a hinge axis that can be coupled to the semi-circular gear 40. The hinge shaft serves to couple the test rig pedestal 100 and the semicircular gear 40 to each other, but also serves as a central axis for the semicircular gear 40 to perform a tilting motion.

Hereinafter, a process of performing a tilt test of the engine 200 as the engine tilt test rig according to the present invention will be described in detail.

The engine 200 is fixed to the engine mounting bracket 10.

Rotate the rotating pedestal 20 by an angle to be tested.

The rotating pin 20 and the tilting plate 30 are coupled to each other by the fixing pin 70.

The engine 200 is started and preheated until the engine oil reaches a desired temperature.

After the preheating is completed, the speed of the engine 200 is increased by a target speed, and the oil pressure of the oil pan is measured by the pressure sensor 80.

When the tilting gear 50 is rotated by the tilting motor 90, the semicircular gear 40, in which the tilting gear 50 and the gear mesh with each other, receives the rotational force of the tilting gear 50 to perform the test. The tilting movement is inclined to one side based on the hinge axis of the rig pedestal 100. At the same time, since the tilting plate 30 attached to the mounting portion 40b of the semi-circular gear 40 and the rotating pedestal 20 connected to the tilting plate 30 also perform a tilting motion, the rotary pedestal 20 The engine 200, which is integrated with), also makes a tilting motion.

When the engine 200 is tilted and the pressure of the engine oil is started to be checked and the pressure reaches the limit value, the tilting of the engine 200 is stopped and the maximum tilting angle inclined until the limit pressure value is reached. Check it. In this case, the threshold pressure value means the lowest pressure value of the engine oil that has oil aeration but is maintained in a state that does not damage the engine.

Check that the maximum tilt angle exceeds the reference value.

In this case, the reference value means a tilting angle that should be tilted at least without a drop in oil pressure when the vehicle is running. For example, in the engine tilting test rig according to the present invention, the maximum tilting angle that can be tilted without oil pressure drop was measured as 20 °, and some of the driving conditions for satisfying the law in the vehicle driving test were tilted at 30 ° ( The engine will break during the driving test.

Therefore, if the maximum tilting angle measured in the engine tilting test rig according to the present invention exceeds the reference value, the engine will not be damaged due to tilting while driving. Achieve your purpose.

Although the embodiments of the present invention have been described above, this is only an example and the spirit of the present invention is not limited thereto, and various changes and modifications may be possible. However, it will be understood through the appended claims that such changes and modifications fall within the scope of the present invention.

By implementing the present invention, a tilting test can be performed using only the engine itself at the stage of developing the engine, and through the test, it is possible to accurately determine the relationship between the tilting angle of the engine and the behavior of the engine oil and their influence on the engine.

In addition, there is an advantage that it is possible to calculate the engine tilt test results efficiently and accurately even at low cost and time.

Claims (3)

An engine mounting bracket for fixedly attaching the engine under test; A pressure sensor for checking oil pressure of the engine; A rotary pedestal positioned below the engine mounting bracket and attached to the upper surface of the body, the engine mounting bracket being configured to rotate in a left or right direction about an axis of the body; A tilting plate positioned under the rotating pedestal; A fixing pin positioned between the rotary pedestal and the tilting plate and blocking rotation of the rotary pedestal by fixing the rotary pedestal to the tilting plate; Semi-circular gear, the upper part of the body is a mounting part corresponding to the diameter, and the lower part of the body is a gear part corresponding to the arc. The tilting plate is attached to the upper surface of the mounting part, and the gear part is a semi-circular gear composed of gears. Wow; A tilting gear positioned at a lower portion of the semicircular gear and driving in engagement with a gear part of the semicircular gear; A tilting motor for rotating the tilting gear; Engine tilting test rig including a test rig pedestal which is fixed to the bottom and has a hinge axis which is coupled to the semicircle gear at the top and which serves as a central axis for the tilting motion of the semicircle gear. The method of claim 1, The semi-circular gear is tilted in a direction opposite to the direction of rotation of the tilting gear as the tilting gear rotates. The method of claim 1, The engine tilting test rig is attached to the semi-circle gear is an encoder for measuring the tilted angle of the semi-circle gear and outputs it as a numerical value