SU987130A1 - Vehicle engine liquid cooling circuit washing - Google Patents

Description

(54) FLUSHING SYSTEM FOR LIQUID CONTOUR

COOLING ENGINE TRANSPORT

one

The invention relates to mechanical engineering, in particular to power plants of vehicles, namely to systems of liquid cooling of internal combustion engines, mainly diesel ones.

The known systems for flushing the engine liquid-cooling circuit of a vehicle with a source of compressed air include an engine cooling jacket, a radiator, a pump through pump, connecting pipes and a device for supplying the flushing water with inlet and outlet connections equipped with a shut-off member and an air supply line to the system .

The system, when the engine liquid-cooling circuit is contaminated during operation, provides the option of flushing the circuit by disconnecting one of the connecting pipes and flushing the engine separately, and then, after appropriate switching of the pipelines, flushing the radiator. The locking organ installed in the system prevents ingress of contaminated EQUIPMENT

washing water in the water supply system in case of reverse flow 1.

However, in the known system, the intensity of suction of the ejected air bubbles into the wash water is low, and, consequently, the cleaning efficiency of the internal cavities of the elements of the liquid cooling circuit is insufficient, and therefore the flushing of the system is determined in a very considerable time.

The aim of the invention is to reduce the flushing time of a vehicle engine cooling system.

This goal is achieved by the fact that the shut-off element is made in the form of a butterfly valve, the inlet and outlet pipes 15 are located on both sides, and the air supply line is connected to the source of compressed air on the one hand and to the flushing water supply pipe on the other.

FIG. 1 shows a flushing circuit for a liquid cooling circuit; in fig. 2devices for the supply and removal of wash water and air; in fig. 3 - section A - A in FIG. 2; in fig. 4 shows an embodiment of a device for supplying and discharging washing water and supplying air; in fig. 5 is a section BB in FIG. four.

A flushing system for a liquid-cooled engine circuit of a vehicle with a source of compressed air includes diesel 1, radiators 2, a pump through pump 3 connected by pipelines 4-6, a draining tank 7. In pipe 5 between pump 3 and radiators 2 there is a device 8 consisting of housing 9 (FIG. 2), in which the rotary valve 10 is located. A feed pipe 11 and a discharge pipe 12 are connected to the housing 9. In the pipe 11, a pipe 13 is installed in the form of a pipe section, which serves to supply compressed air from a compressor installation of a vehicle (not shown). The valve 10 is rotated by the handle 14 (Fig. 3).

One of the embodiments of the system can be a structure in which the valve 10 is located in the wall of the glass 15 (Fig. 4 and 5), having two holes in the cylindrical part and two holes in the bottom. The latter are connected to nozzles 11 and 12, and the holes in the bottom of the housing 9 coincide with the holes in the bottom of the glass 15 in the position when the valve 10 closes the pipe 8 (Fig. 1).

In working condition, the valve 10 is installed along the axis of the housing 9 (Fig. 2), and the additional nozzles 11 and 12 and the line 13 are closed by valves (not shown) or disconnected by the bottom of the cup 15 (Fig. 4).

When flushing, the working fluid is drained from the system. A flushing unit (not shown) is connected to the pipes 11 and 12, a compressor unit with compressed air is connected to the line 13, the valve 10 is rotated 90 °, the main line being closed, and the flushing water inlet and outlet valves 11 and 12 and air to line 13 is open. After turning on the pump of the flushing unit and supplying the air from the compressor unit, an intense bubbling of air is created in the flushing fluid circulating in the circuit of the liquid cooling system in the direction opposite to the main direction of movement of the working fluid during diesel operation.

Simultaneous flushing of all elements of the vehicle engine liquid cooling circuit without dismantling them, the direction of circulation of the flushing liquid and the intense flow of compressed air into the liquid increase the efficiency of flushing the system, reduce the cost of the process and 2-3 times shorten the flushing time.

Claims (1)

Invention Formula A flushing system for a liquid-cooled engine circuit of a vehicle with a source of compressed air, containing an engine cooling jacket, a radiator, a pump through pump, connecting pipes and a device for supplying the flushing water with inlet and outlet connections equipped with , characterized in that, in order to reduce the flushing time, the shut-off member is designed as a butterfly valve, the inlet and outlet nozzles are located on both its sides s, and the air supply line is connected on one side to a compressed air source, and the other - to the supply pipe of wash water present. Sources of information taken into account in the examination 1. US patent number 4178134, cl. F 01 R 11/06, published 1980