RU31644U1 - ICE CRANK CONNECTOR WEAR INDICATOR - Google Patents

Description

CRANKSHAFT CONNECTOR WEAR

. two

The proposed device relates to recording instruments that measure some values of variables, and is intended for in-place determination of the degree of wear of the mating surfaces between the parts of the crankshaft-connecting rod mechanism (KShO in two (internal combustion engines).

It is known that during the operation of the car as the wear of its parts and assemblies increases the cost of transportation, the most obvious. an example is the automobile engine (ICE), the timely repair of which can reduce the unit cost of maintaining the performance of the car,

To determine the timeliness of engine repair, it is necessary to use reliable methods for diagnosing its condition, in turn, the state of mating surfaces (the degree of wear) in the crank mechanism and piston group, which can be established with the greatest reliability only as a result of engine disassembly. However, diagnostics using disassembly instead of benefit is harmful, since during subsequent assembly, the mating surfaces begin to be worked in again, which reduces the engine’s time for slashing. Therefore, in practice, the state of the engine and the need for its repair are determined by a number of indirect signs, such as fuel consumption, engine oil, pressure in the lubrication system, power drop, etc. (see, for example, F.N. Avdonkin. Theoretical foundations of the technique IK S- 01 D 1/08

practical operation of cars. M, Transport, 1985).

Obviously, the reliability and objectivity of such a diagnosis is generally doubtful.

A known compressor is used to diagnose the condition (degree of wear) of two piston rings quite effectively without disassembling it.

A 1% in-line compressor is a manometer (recording / recording device) with a fixed position of its arrow mounted on a housing / unit that is easily removable mounted on the internal combustion engine (installed instead of an afterburner or spark plug). During diagnostics, the engine is cranked up by the starter, and the manometer shows the pressure created in the combustion chamber (see, for example, Ger. Device, maintenance and repair of automobiles. M., Vysshaya Shkola, 1975, p. 241). Pressure (compression) below the set for this brand of engine, indicates a malfunction of the piston rings (wear or occurrence).

Despite the advantages of the known indicator-compressor, its use is limited only by the diagnosis of the condition of the piston rings.

When creating the claimed device, the task was to create an indicator for CIP diagnosis of the state of the crank mechanism, for the ease of use and reliability of diagnosis similar to the well-known compressor.

The problem is solved by the fact that a wear indicator of the ICE crank mechanism is proposed, the recording device of which is connected to the combustion engine of the internal combustion engine through a channel in the indicator housing, which is easily connected to the combustion chamber.

What's new in the pre-set indicator is that the instrument is a micrometer depth gage, the probe of which is axially movably mounted in the channel and interacts with the crank piston of the mechanism, and another channel is provided with a shut-off valve in the housing, which communicates with the atmosphere to the chamber.

The indicator is also characterized in that its probe is equipped with an electric signaling device for the probe to interact with the piston.

The technical result of the claimed device is to create an indicator that allows quickly and with high accuracy and reliability to determine the degree of wear in the crank mechanism of such joints as a connecting rod bearing, the crankshaft journal, the sleeve-piston pin, the piston palette-bobppki of the piston, which can significantly reduce operating costs .

The drawing schematically shows the design of the claimed indicator, side view.

The indicator comprises a housing I, in a through channel 2 (conventionally shown by a geometric axis) of which a micrometric depth gauge is placed, including a probe 3 mounted axially-movably and spring-loaded interacting with a micrometer screw 4. In the housing I, a steep channel 5 is also released into the atmosphere and equipped with a shut-off valve 6. A pressure gauge 7, which performs the function of a well-known compressor, is constantly connected to channel 5. % n 3 is electrically isolated from the housing I (from the ground) and through the power supply element 8 is connected to an electric signaling device 9 (for example, an LED).

The device operates as follows.

CBQ4VI ignition) insert the probe 3, and the indicator housing I is fixed relative to the internal combustion engine so that the combustion chamber of the diagnosed cylinder is sealed by the housing I itself, but its connection with the atmosphere through channel 5. The screw 4 is screwed in until the 3 contact with the piston 10, on as indicated by LED 9, and the readings of screw 4 are recorded. Unscrew screw 4, withdrawing 1 chain 3 from piston II, close shut-off valve 6 (if it was open), start the engine, and with a minimum engine speed of its crankshaft, screw 4 returns to odyat probe 3 into contact with the piston II. When the LED lights up, the new readings of the screw 4 are read. The difference between the first and second readings of the screw 4 will determine the total by the thickness of the oil layer in the gaps between the parts of the crankshaft.

Then, without stopping the engine, the probe is withdrawn from the piston, the shut-off valve b is opened, communicating the combustion chamber with the atmosphere, and the probe is again brought into contact with the piston. Due to the inertia forces of the KShM parts, the oil film will be squeezed out of the gaps between its parts, and the difference between the first and third readings of the micrometer screw 4 will characterize the extra gap between the mating KShM parts.

Thus, in conjunction with a pressure gauge 7 (functionally independent of the micrometer screw-depth gauge), the claimed indicator allows you to reliably and with high accuracy to diagnose the state of the internal combustion engine in a wide range.

Claims (2)

1. The wear indicator of the ICE crank mechanism, the recording device of which is connected to the combustion engine of the ICE through a channel in the indicator housing, easily connected to the camera, characterized in that the device is a micrometer depth gauge, the probe of which is axially movably mounted in the channel and interacts with the piston a crank mechanism, and in the housing another channel is provided equipped with a shut-off valve, communicating the chamber with the atmosphere. 2. The indicator according to claim 1, characterized in that the probe is equipped with an electrical signaling device for its interaction with the piston.