RU2511796C1 - Centrifugal oil filter of internal combustion engine - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: centrifugal oil cleaner is proposed with the possibility to control frequency of rotation of its rotor by induction instruments. For this purpose on the outer vertical surface of the rotor perpendicularly to its axis there is a cog, and on the outer cylindrical surface of the filter cap there is an induction converter of rotation frequency with the possibility of interaction of its core with the cog during rotor rotation. Use of the proposed device under stationary conditions, during maintenance, makes it possible to increase accuracy of determination of extent of contamination of the centrifugal filter and its good condition.

EFFECT: use of the device makes it possible to permanently clean a centrifugal filter when required, taking into account technical condition of an engine and conditions of its operation.

2 cl, 2 dwg

Description

The invention relates to mechanical engineering, as well as to the diagnosis of internal combustion engines, in particular to the design of centrifugal oil filters and means for determining their technical condition.

Known induction measuring speed converter. It consists of a housing, inside which a coil with a core is placed, and a three-core shielded cable connected to the ends of the coil and to the housing of the converter. The Converter is placed against a rotating part having a drilling or a protrusion at a distance of 3 ... 4 mm / 1 /.

The disadvantage of this device is that it is little adapted for use as a diagnostic tool for centrifugal oil filters.

The closest technical solution, selected as a prototype, is a centrifugal oil filter of an internal combustion engine, consisting of a rotor and a filter cap / 2 /.

A disadvantage of the known device is that it is not sufficiently adapted for diagnosis, in particular for determining and monitoring the rotor speed. The rotor is made of non-magnetic material, which does not allow the use of induction measuring devices as diagnostic tools.

The objective of the invention is the creation of a centrifugal oil cleaner with the ability to control the frequency of rotation of its rotor by induction devices.

The invention consists in the following. A spike is installed on the outer vertical surface of the rotor perpendicular to its axis of rotation, and an induction speed converter is placed on the outer cylindrical surface of the filter cap with the possibility of its core interacting with the spike during rotation of the rotor. In addition, the spike is made with the formation of a cylindrical head, the axis of which is parallel to the axis of rotation of the rotor. The length of the head is configured to interact with the core during rotation of the rotor while moving along its axis in the interval of the axial clearance from zero to the maximum value. Together, this allows you to create a centrifugal oil purifier with the ability to control the frequency of rotation of its rotor by induction devices.

In FIG. 1 and 2 show a centrifugal oil filter of an internal combustion engine. In particular, in FIG. 1 shows a local section through a centrifugal oil filter; FIG. 2 presents a diagram of the movement of the spike 7 relative to the core 5 when the rotor 2 selects the axial clearance S _o .

The centrifugal oil filter of the internal combustion engine (Fig. 1) consists of a rotor 2 and a cap 1. On the outer vertical surface of the rotor 2 there is a spike 7 perpendicular to its axis of rotation, and an induction frequency converter 3, the core 5 of which is mounted on the outer cylindrical surface of the cap 1 has the ability to interact with the spike 7 during rotation of the rotor 3. Cable 4 of the Converter 3 is connected to a pointer (not shown). While the spike 7 is made of magnetic material with the formation of a cylindrical head 6, the axis of which is parallel to the axis of rotation of the rotor 2 (Fig. 1), the length of the head 6 is made with the possibility of interaction of the core 5 with it during rotation of the rotor 2 with simultaneous movement along its axis in the interval axial clearance S _o from zero to the maximum value (Fig. 2).

The principle of operation of the device is as follows. Rotor speed control 2 at a nominal frequency of rotation of the crankshaft and an oil temperature of 75 ... 80 ° ^C. With the passage of the head 6 of the core 5 by the coil transducer 3 under the action of the magnetic field lines excited by current pulses which are proportional to the rotational frequency of the rotor 2. They do into a measuring device and after conversion to speed units - to a pointer. During rotation, the rotor 2 rises upward along the axis and selects the axial clearance S _o , the maximum value of which can reach 3 mm. In this case, the spike 7 with the head 6 also rises upward relative to the core 5 (this position in Fig. 2 is shown by dashed lines). Since the length of the head 6 is made comparable with the axial clearance S _o , in this position the head 6 and the core 5 also remain in the interaction zone.

Based on the proposed technical solutions, it seems possible to create a centrifugal oil filter with a device for controlling the rotor speed 2.

Using the proposed device in stationary conditions during maintenance can improve the accuracy of determining the degree of contamination of a centrifugal filter and its serviceability. Using the device constantly (normally) allows you to clean the centrifugal filter as necessary, taking into account the technical condition of the engine and its operating conditions.

INFORMATION SOURCES

1 . Belsky V.I. Diagnostics and maintenance of agricultural machinery / V.I.Belsky. - 2nd ed., Revised. and add. - M.: Kolos, 1980 .-- S. 77-78.

2 . Tractors "Belarus" MTZ-100, MTZ-102, MTZ-80A, MTZ-82A: Technical description and instruction manual / E. A. Bomberov and others - Mn. : Urajay, 1987. - S. 43-46 - prototype.

Claims (2)

1. A centrifugal oil filter of an internal combustion engine, consisting of a rotor and a filter cap, characterized in that a spike is installed on the outer vertical surface of the rotor perpendicular to its axis of rotation, and an induction frequency converter with the possibility of interaction of its core with spike when the rotor rotates. 2. The device according to claim 1, characterized in that the spike is made with the formation of a cylindrical head, the axis of which is parallel to the axis of rotation of the rotor, while the length of the head is configured to interact with the core during rotation of the rotor while moving along its axis in the interval of axial clearance from zero to the maximum value.

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