RU80952U1 - DEVICE FOR DIAGNOSTIC OF PISTON RING ICE - Google Patents

Abstract

The objective of the utility model is to increase the accuracy of measurements. The inventive device consists of a housing 1, on which is placed a device for fixing the studied piston rings 2, consisting of a pressure plate 3 and screws 4. At the free end of the piston ring, a bracket 5 is mounted, which is rigidly connected to the armature of the electromagnet and is a reference mass, with fixed on it an acceleration sensor (accelerometer) 6 .. When applying an electric voltage to the starting electromagnet 7, the piston ring 2 bends, and the bracket 5 with the sensor 6 is attracted to its lowest position. Next, a signal is sent to turn off the starting electromagnet 7. Due to a direct central impact of the bracket 5 at the adjustable stop 11, shock processes occur in the piston ring 2. The oscillation process is recorded by the acceleration sensor 6, the signal from which is recorded by block 10, and enters the computer 8 as a voltage dependence from time.

Positive effect: accelerating the diagnosis process and increasing the reliability of fuel equipment.

Description

The utility model relates to engine building, in particular to control and diagnostic equipment.

A known device for measuring the physicomechanical properties of piston rings, consisting of a base on which a measuring part is mounted, including a lever with a reference load and an indicator (see Danilov Yu.S., Nikitin D.A., Khokhlov A.V. Pattern) changes in the elastic modulus around the perimeter of the piston ring. Tractors and agricultural machines. No. 8, 2005, pp. 47-48).

The disadvantage of this device is that the measurement process is quite lengthy.

A device for controlling the elastic-plastic properties of piston rings of an internal combustion engine, including a pendulum lever with an arrow, pivotally connected to a movable carriage and mounted on a fixed frame (see Moldavanov V.P. Piston rings of an internal combustion engine. - M .: Rosselkhozizdat, 1985. p. 75-77).

The disadvantage of this device is that it does not have a sufficiently high measurement accuracy.

The objective of the utility model is to increase the accuracy of measurements.

The task is achieved in that in the device for diagnosing piston rings of the internal combustion engine including a housing, a clamping device for securing the piston ring, on the free end of which there is a bracket with a reference mass and an accelerometer electrically connected to the control system, an adjustable stop is fixed on the housing, made in the form of a convex hemisphere.

Distinctive features in the claimed technical solution were not identified when studying this and related areas of technology.

The combination of the claimed features ensures the achievement of the objective of the utility model - improving the accuracy of measurements.

In FIG. shows a General view of the proposed device.

The device consists of a housing 1, on which is placed a device for fixing the studied piston rings 2, consisting of a pressure plate 3 and screws 4. A bracket 5 is mounted on the free end of the piston ring, which is rigidly connected to the armature of the electromagnet and is a reference mass with a sensor mounted on it acceleration (accelerometer) 6. Under the bracket, a starting electromagnet 7 is installed, controlled by a control system including a computer 8, an amplifier 9, and an analog-to-digital and digital-to-analog converter unit 10. An adjustable stop 11 made in the form of a convex hemisphere is fixed to the housing 1.

The device operates as follows. An electric voltage is applied to the starting electromagnet 7, as a result of which the piston ring 2

bends, and the bracket 5 with the sensor 6 is attracted to its lowest position. Next, a signal is sent to turn off the starting electromagnet 7. Due to a direct central impact of the bracket 5 at the adjustable stop 11, shock processes occur in the piston ring 2. The oscillation process is recorded by the acceleration sensor 6, the signal from which is recorded by block 10, and enters the computer 8 as a voltage dependence from time. The use of an adjustable stop in the form of a convex hemisphere allows you to customize the installation so that the impact occurs with the required amplitude, and the spherical shape of the adjustable stop provides a direct central impact. For the correct functioning of the device, it is necessary to provide a gap 8 between the bracket 5 and the adjustable stop 11. According to the results obtained from the tests, controlled by the impact, the curve processes shock pulses, etc. reject defective piston rings.

Using the proposed device can significantly speed up the process of diagnosis and increase the reliability of fuel equipment.

Claims (1)

A device for diagnosing piston rings of an internal combustion engine, including a housing, a clamping device for securing a piston ring, on the free end of which there is an arm with a reference mass and an accelerometer electrically connected to the control system, characterized in that an adjustable stop is made on the housing, made in the form convex hemisphere.