RU2323354C1 - Device for maintaining level of working liquid in crankcase of internal combustion engine - Google Patents

Abstract

FIELD: mechanical engineering; internal combustion engines.

SUBSTANCE: proposed device contains float chamber with cover connected with engine crankcase in manner of communicating vessels, float with rod placed in chamber, conical valve with housing and tank with reserve volume of working liquid installed higher than float chamber and connected with valve housing by pipeline. Device is furnished with solenoid and ferromagnetic sleeve, valve housing is secured on cover of float chamber, and float is connected with valve by means of rod. Ferromagnetic sleeve is secured in lower part of rod, is connected with float and is made for getting into solenoid which is secured on inner side of cover of float chamber.

EFFECT: reduced consumption of working liquid at operation of engines.

1 dwg

Description

The invention relates to the field of mechanical engineering and can be used in the design, manufacture and operation of internal combustion engines of mobile machines.

A device for maintaining the level of the working fluid [1], including a float chamber, a float, a cone valve, a pipeline, moreover, the float chamber is connected to the crankcase on the principle of communicating vessels, and a tank with a reserve volume of liquid connected to the valve body by a pipeline. The device ensures the maintenance of an optimal level of working fluid in the crankcase of an internal combustion engine mounted on a fixed base.

The disadvantage of this device is the inability to use it to maintain an optimal level of working fluid in the crankcase of internal combustion engines installed on mobile machines. During the movement of mobile machines, the level of the working fluid at the point of attachment of the float chamber varies over a wide range due to inertia forces during acceleration and braking of the machine, as well as due to the longitudinal and transverse slopes of the road. Under these conditions, the device does not ensure the maintenance of an optimal level of working fluid in the crankcase. As a rule, an excess supply occurs, which leads to an increased flow of working fluid.

The aim of this invention is to reduce the flow rate of the working fluid during the operation of internal combustion engines installed on mobile machines.

To achieve this goal, the problem is solved - to develop the design of the device, ensuring the maintenance of the optimal level of working fluid in the crankcase of the internal combustion engine of the mobile machine.

To solve this problem, a device for maintaining the level of working fluid in the crankcase of an internal combustion engine, comprising a float chamber with a cap connected to the crankcase of the engine according to the principle of communicating vessels, a float with a rod located in the chamber, a cone valve with a housing and a tank with a reserve volume fixed above the float chamber the working fluid connected to the valve body by a pipeline is supplied with a solenoid and a ferromagnetic sleeve, the valve body is fixed on the cover of the float chamber, and the float ok connect to the valve through the rod, while the ferromagnetic sleeve is fixed in the lower part of the rod and connected to the float and is configured to enter the solenoid, which is fixed on the inside of the cover of the float chamber.

The invention is illustrated by the drawing, which shows a vertical section of the device.

The device consists of a breather 1, tank 2 with a reserve volume of working fluid, pipeline 3, conical valve 4, valve body 5, rod 6, solenoid 7, ferromagnetic sleeve 8, connecting (gas) pipe 9, crankcase 10 of the engine, connecting (liquid) the pipe 11, the float 12, the float chamber 13, the cover 14 of the float chamber.

The device is attached by the float chamber 13 to the engine crankcase 10 by means of connecting nozzles 9 and 11. A tank 2 with a reserve volume of the working fluid, equipped with a breather 1, is attached above (to create the necessary pressure) of the float chamber 13 and is connected to the valve body 5 by a pipe 3. The body 5, valve 4 is mounted on the cover 14 and connected through a hole in the cover by means of a pipe 3 to the cavity of the float chamber 13. The float 12 is placed in the chamber 13 and connected to the valve 4 by means of a rod 6, in the lower part of which is fixed ferro agnitnaya sleeve 9 is connected also with a float, which is adapted to fit inside the solenoid 7 fixed to the inner side of the lid 14. All parts of the device except the sleeve are made of materials nemagnitoaktivnyh.

The device operates as follows. The solenoid 7 included in the ignition system, when starting the engine, draws in the ferromagnetic sleeve 8, and the valve 4 closes the inlet in the housing 5. Thus, the supply of working fluid from the tank 2 to the float chamber 13 is blocked during the operation of the engine of the mobile machine, which is accompanied by level fluctuations in the float chamber due to inertia during acceleration and braking of the machine and its inclinations on ascents, descents and with side roll. The connecting pipe 11 has hydraulic resistances that reduce the effect of the excitation of the working fluid on the float 12. After turning off the engine, after 15 ... 20 minutes (the time required for the working fluid to flow out of the lubrication system), the time relay built into the ignition system turns off the current in the solenoid and the float 12 together with the stem 6 and valve 4 is lowered, opening a hole in the housing 5 of the valve 4. The working fluid from the tank 2 through the pipe 3 through the housing 5 of the valve 4 enters the float chamber 13 and raises the level of the working fluid and up to the optimal level 15 at which the valve closes the opening 4 in the casing 5 due to the buoyancy force of the float 12. The volume of hydraulic fluid in the crankcase 10 is replenished exactly as much as it was consumed (due to fumes) during the preceding operation of the engine of the mobile machine. Control over the flow of working fluid is performed by observing its level in the tank 2, equipped with a viewing window (not shown).

It is supplying the device with a solenoid and a ferromagnetic sleeve, securing the valve body to the cover of the float chamber, connecting the float to the valve through the rod, securing the ferromagnetic sleeve in the lower part of the stem and connecting to the float, and making it possible to enter the solenoid that is fixed on the inside of the float chamber , ensures the maintenance of an optimal level of working fluid in the crankcase of the internal combustion engine of a mobile machine.

Example. With continuous operation of the YaMZ-238B engine with a power of 220.6 kW with a standard oil consumption of 1% (0.01) of the exhausted fuel (fuel consumption of 237 grams per 1 kWh) for 4 hours, the oil consumption was

0.01 (220.6 · 237 · 4) = 2091≈2.1 kg.

A device for maintaining the working fluid level installed on the engine, 20 minutes after turning off the ignition, replenished the crankcase by the amount of oil used above and its level again became optimal before the next engine start, i.e. the average between the maximum and minimum acceptable. Observations of oil consumption from the reserve tank showed that its level in the crankcase has risen.

Information sources

1. Application of France No. 2583106, publ. 1986.

Claims (1)

A device for maintaining the working fluid level in the crankcase of an internal combustion engine, comprising a float chamber with a cap connected to the crankcase of the engine according to the principle of communicating vessels, a float chamber with a rod located in the chamber, a cone valve with a housing and a tank fixed above the float chamber with a reserve volume of working fluid connected with the valve body by a pipeline, characterized in that it is provided with a solenoid and a ferromagnetic sleeve, the valve body is mounted on the cover of the float chamber, and the float is connected nen with the valve through the rod, while the ferromagnetic sleeve is fixed in the lower part of the rod and connected to the float and is configured to enter the solenoid, which is fixed on the inside of the cover of the float chamber.