SU714030A1 - Vehicle i.c. engine cooling system - Google Patents

Description

The invention relates to the field of mechanical engineering, in particular, engine-building, namely, to system 4 cooling of internal combustion engines of land-based vehicles. The cooling systems of internal combustion engines, containing a package of radiators, are known. in the form of a wall of a sub-radiator duct, the outlet of which is connected to the mixing chamber of a multi-nozzle ejector that uses the energy of exhaust gases. For sucking fresh air through the packet of radiators 1. The geometrical parameters of the flow section of such ejectors are related to certain ratios needed for. performance performance, For special purpose ground vehicles that have hidden open compartments ventilated through safety grilles at the top, the flat layout of the cooling system with weights limited in height 2 is most characteristic. However, it is difficult to ensure that these dimensions are optimal. The purpose of the described invention is to evaluate the effectiveness of the cooling system while maintaining its overall dimensions. For this, the outlet of the duct is divided into two sections, with a partition wall, one of the sections, remote from the radiator package, is connected to the mixing chamber of the ejector, and in the second, a diametrical fan that overlaps the section. The system can be made with the following ratio: the dimensions of the fan AND; the flow part of the ejector. . D 0., 8 - 1.0 N; f 0.55 - 0.60 H; h 0.60 - 0.70 H; where D is the diameter of the fan's impeller, -H is the distance from the longitudinal partition to the nearest horizontal: duct wall, the distance from the fan axis to the nearest vertical radiator wall, h is the distance from the axis fan to the nearest horizontal wall of the radiator.

714030

The drawing shows a diagram of the proposed system 1№abhla1zhden; y. at:

The package of radiators 1 is made up in the form of the upper wall of the subradiator duct 2, Tiyoyyshchunu inside the receiving chamber 3 and the outlet nipple 4. The exhaust nipple 4 is divided into two by means of a continuous partition 5

sections in the form of flow channels, pr 1 f YASh6g9 T1bpeo Sh "Shz" 5: s1echeny5,: located one bank YARUGIM. The lower section, remote from the package of radiators, is a flow through part of the injector, consisting of an active chamber and a diffuser 7 connected to it, an upper section of the unit of a diametral ventilator, consisting of a suction nozzle 8 and a discharge pipe 9. In the receiving chamber 3 at the entrance

in the mixing chamber b transversely to the duct 2, a receiver 10 of exhaust gases is installed, equipped with nozzles 11 evenly spaced along the width. -; -; - -; box.,.

In the flow part of the fan between the pipes 8 and 9 transversely the duct 2 is in its width and is set to -. leno 12w impeller impeller with a movable guide for Gotsim apparatus 13 wheels, ..; . . .

. The dimensions of the flow-through part of the fan are chosen based on the condition of ensuring the thermal efficiency of the system of 3 tense operating conditions during the joint operation of the ejector and the fan. In accordance with the following parameters: segma diameter of the worker; fan wheels and coordinates of its axis with respect to the vertex and the local and horizontal direction of the wall to the nearest radiator are expressed depending on D 0; 8-1,0 N, f 0,550 , 60 N, h 0.60 - 0.70 N (symbols are given above) ..

System cooling operation is bare. Blowing way. ....- ..,; ,,, ...., ..

In the receiving chamber 3, as a result of the joint work of the fan and the ejector, it is created; and a vacuum is maintained to allow

 Air flow through the radiator package 1 and the last 5. Of

; the receiving caller is blown out by two parallel streams of bdi pbto-enters the mixing chamber 6

 an ejector where it mixes with exhaust gases coming from the nozzles 11. 10, cools them in the form of a gas-air mixture; it passes through the diffuser 7 and the outlet, 4, to orbit 2 to the outside. The second Pt 6k enters the flow part of the fan / passes through the suction nozzle

8, the impeller 12 with guiding devices — 13 and the discharge nozzle 9, from where it is thrown out through the exhaust nozzle 4 of the box.

The overall dimensions of the package of radiators and the flow part of the ejector make it possible to ensure the thermal efficiency of the cooling system in various operating conditions.

Claims (2)

1 .. The engine cooling system of the vehicle is burned, containing a radiator package that is fitted in the wall of the subradiator box, the exhaust pipe of which is connected to the mixing ejector, which uses the energy of the exhaust ejector, and is powered by the power of the unit. tl and h ayu sh. . By the fact that, in order to increase efficiency while preserving the system’s rabap dimensions, the duct outlet is divided into a yVo by means of a longitudinal partition, one of the sections being removed from the radiogram package, connected to the mixing chamber of the ejector, and diametric valve tbr. . 2. The system of claim 1, wherein the diameter of the impeller of the fan and the coordinates of the EG of its axis relative to the vertical and horizontal walls of the nearest radius are expressed by dependencies; D 0.8-1.0 N, e-0.55-0.60 N h 0,60-0,70 N,. where b is the diameter of the impeller of the fan, H is scaled, in height from the longitudinal partition to the nearest horizontal duct wall, e is the distance from the axis: the fan to the nearest vertical wall of the radiator, h is the distance from the axis of the fan to the nearest horizontal wall of the radiator. Sources of information taken into account in examination 5 1. Authors certificate of the USSR in application 2440756/06 (003397), Cl. F. 01 P 3/00, F 01 H 5/00 1977. 2, Nosov N.A. Calculation and design of tracked vehicles. L., Ma1972, p. 39 (protoshinostroenie type). 11 ya "a & e" shch y. 4-7 s 5 ff / 3 e n D n