SU891997A1 - V-shaped i.c. engine cylinder block - Google Patents

Description

(54) U-: CYLINDER BLOCK: INTERNAL COMBUSTION MOTOR

I

The invention relates to mechanical engineering, in particular to internal combustion engines, and can be used & in engines with preheating systems.

Known blocks of cylinders V-shaped .go engine of internal combustion, containing tbrtsevye and side, outer and inner walls and cylinders, forming a cooling cavity U-IQ

However, these blocks are not adapted for connecting the pre-start preheater, since there are no openings for the supply and removal of cooling fluid from the pre-heater.

Such cylinder blocks of a V-shaped internal combustion engine are known, which include end and side, outside. internal walls and cylinders that form the cooling plane, equipped with holes dp supply and removal of coolant I.

The disadvantages of the known blocks are that the connection of the heater connection is long and complex in performance, and there is also a high uneven heating of the block, due to the uneven distribution of the coolant over the cavities. cooling, and as a result, the duration of the heating is significant.

The purpose of the invention is to accelerate the warm-up by leveling the speeds of movement of the coolant.

To achieve the goal, in the lower part of the end walls, channels are made, which communicate the cooling cavities of the cylinders among themselves.

FIG. 1 shows the cylinder block, plan; in fig. 2 - the same cross section; in fig. 3 is a schematic of the engine cooling system and its preheating.

Claims (2)

The cylinder block of a y-shaped internal combustion engine comprises end walls 1, side outer walls 2, side inner walls 3, and cylinders 4. forming cooling cavities 5 (Figs. 1 and 2), provided with openings for supply 6 and outlet 7 for cooling fluid. In the lower part of the end walls 1, a canal 8 is made, collecting cavities 5. between them. A heater consisting of the boiler 12 and the liquid pump 13 is connected to the cooling cavities 5 through openings 6 and 7 with the help of pipelines 14 and 15 {fig. 3). The engine cooling system includes a radiator 16, a thermostat 17 and a liquid pump 18 driven by the engine. The unit works as follows. When the engine is preheated, the cooling fluid through conduit 14 is collected from the cooling cavities 5 in the front of the oypindr. By pump 13 of the preheater, coolant is supplied through a conduit to the body 12 of the preheater, where it is heated. Then, the heated fluid through conduit 15 is fed through inlet 7 in canape 5, located in the end wall adjacent to the crankcase. The distribution chamber 9 ensures a uniform flow of heated coolant through both cooling cavities 5. Inside the cooling cavities 5, the liquid passes from the rear to the front end walls 1. Under the action of the gravitational pressure, the cooling liquid through the holes 10 is guided into the cooling cavity of 5 gs of bulbs cylinders, ensuring their warming up. During operation of the preheater, the coldest liquid is discharged from the cooling cavities 5 through the channel 8, located at the front end wall and provided with an opening 7. Thanks to the curved thermostat 17 during the pre-heating of the cylinder, the heated cooling liquid is prevented from entering the radiator of the cooling system which makes the effect of warming up the cylinder unit. The engine in the open thermostat 17, under the action of a liquid pump 18 driven by the engine, ensures the normal circulation of the coolant through the radiator 16. Such a design of the cylinder block of the V-engine in the presence of a valve is:. Fishing in the lower part of the end walls 1 of the cooling cavities 5 o6 ensures uniform distribution of the cooling fluid along both cooling cavities, equalization of velocities and stabilization of the fluid flow inside each cooling cavity. As a result, the cylinder block is uniformly heated. A more uniform heating of the cylinder block provides a significant increase in the temperature of the lower part of the cooling cavities, due to the heat transfer from which the crankshaft main bearings are heated. The application of the invention provides shorter pre-launch time, engine warming with negative topics: ambient air temperatures by 25% due to an increase in the efficiency of using the heat supplied by the preheating agent to the cooling cavities of the S1LICDRO unit, as well as decreasing, approximately twice the length of the liquid connections of the heater to the engine due to the optimal supply and removal of coolant during preheating. DETAILED DESCRIPTION OF THE INVENTION Cylinder block of a V-shaped internal combustion engine comprising end walls, outer and inner side walls, and cylinders forming cavities equipped with openings for supplying and discharging coolant, characterized in that in order to accelerate the warm-up the movement of the fluid, in the lower part of the end walls, channels are made, which communicate the cooling of the cylinder cavity between them. Sources of information taken into consideration in the examination of 1, B, N, Constructions of foreign diesel and marine engines. M ,, 1961, p. 39-42, 2. Instructions for the operation of cars KRAZ-255B and KPAS-255B, Voeniz dates of MO, 197O. with. 34 (prototap). T YU at  6 ./ - " FIG. one Faye. 2