SU1295014A1 - Lubrication system of diesel engine cylinder face - Google Patents

Abstract

The invention relates to engine construction and makes it possible to increase the efficiency of the lubrication system by simplifying its design. For this purpose, channels 7 and 8 are made in the wall of the cylinder liner 5, which are located between the feed tank and the oil supply device 2. Through the channel 8, oil is displaced to the moving compression rings. The housing 3 of the device 2 is made with an internal stepped cavity. The displacer 4 is placed in the housing 3 with the formation of the pre-chamber 11 and the cavities 12 and 13 of the injection. During the period of increase in pressure in the prechamber, the brush 9 and the piston 10, when moved, compress the spring. When this occurs, an increase in the oil cavity 13 and the oil is sucked through the check valve 18 from the tank. Cavities 12 and 13 are interconnected by means of oil channels 14 and a check valve 15 in the rod 9. The amount of oil supplied to the prechamber is controlled by adjusting the system with the regulating device 19. 3 sludge. SS (L 10 7J 15 J / // ed. 1511 5 4;

Description

The invention relates to mechanical engineering and can be used in the lubrication systems of internal combustion engines.

The aim of the invention is to increase the efficiency of the lubrication system by simplifying its design.

FIG. 1 shows the scheme of the proposed lubrication system; in fig. 2 — oil supply device, longitudinal section; in fig. 3 shows the curves for the change in gas pressure in the cylinder and in the region of the lubrication ports.

The system contains a supply tank 1, an oil supply device 2 with a housing 3 and a spring-loaded displacer 4 installed in the wall of the cylinder liner 5, and an oil pipe 6 placed between the supply tank 1 and the oil supply device 2. The cylinder sleeve 5 is equipped with two channels 7 and 8, made in its wall and communicating the oil supply device 2 with the cylinder mirror. The channels 7 and 8 are located one distance from the other, greater than the height of the compression ring. The body 3 of the oil tank (the rear part 2 is made with an internal stepped cavity, and the expeller 4 is composed of a stepped rod 9 and a piston 10 and is housed in the body 3 with about |) prechamber 11 and two cavities 12 and 13 pumping. The rod 9 is provided with oil channels 14, a check valve 15 and oil grooves 16. Pre-chamber 11 is in communication with channels 7 and 8 with a cylinder of a diesel engine, one injection cavity 12 is in communication with pre-chamber II with the help of oil grooves 16 in the shaft, and another with the supply tank 1. The cavities 12 and 13 are interconnected by means of the oil channels 14 and the check valve 15 in the rod 9.

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A booster pump 17 is placed in the oil line 6. The oil supply device 2 is provided with a check valve 18 and a pei-y-40 liquefaction device 19.

The feed tank I is connected to the compressed air supply line 20.

The system works as follows.

When the engine moves upward in the cylinder and the prechamber 11, the gas pressure increases (section a, line 1, fig. 3). The pressure build-up in the pre-chamber ends at point 1 when the first compression ring closes channel 7. During the pressure build-up period in the predecessor, the brush 9 and the piston 10 move to the left, compressing the spring. When this occurs, an increase in the oil pressure 13 and the suction of oil through the check valve 18 from the feed tank 1 occurs.

From the moment when the first compression ring goes under hole 8 (point 2), gas pressure drops in the pre-chamber, similar to the pressure drop in the cylinder. In this case, the spring moves the brush and the piston to the right, the cavity 13 is reduced and oil is pumped into the cavity 12 and the pre-chamber, from which some oil can flow to the mirror during this period. This oil is captured by the first compression ring during the upward stroke of the piston and is distributed by it to the cylinder mirror. When the first ring is again between channels 7 and 8, the cycle of oil supply and the operation of the system is repeated.

Pumping the system when the engine is not running or an emergency increase in the oil supply during its operation is provided by the boost pump 17 or by transferring to the supply tank I of compressed air through the pipeline 20.

The amount of oil supplied to the prechamber is controlled by adjusting the system with the regulating device 19.

Claims (1)

Invention Formula The lubrication system of the cylinder of a diesel engine, containing a feed tank, an oil supply device with a housing and a spring-loaded propellant, is installed in Further movement of the piston upwards 55 to the wall of the liner and, at the same time, and the oil line, and the message of the subsequent interring beams placed between the feed tank and straps with channels 7 and 8 leads to an oil-bearing device, which differs in pressure drop in the pre-chamber (section b so that, in order to increase the effect of 0 five 0 g line 1). In this case, under the action of the compressed spring, the piston rod moves to the right. This reduces the volume of cavity 13, closes valve 18, opens valve 15, and displaces oil from cavity 13 into cavity 12 through channels 14. Due to the fact that cavity 13 is larger than cavity 12, oil from cavity 12 flows through the oil grooves in the prechamber 11. When the piston moves down, the lower compression ring is between channels 7 and 8. From this moment, due to the pressure difference between the rings and the alternate subsequent communication of the inter-ring bridges with the pre-chamber, gases enter the pre-chamber; The oil on the channel 8 is forced out to the moving rings. At the same time, due to the increase in pressure in the prechamber (section from line I), the rod and piston are again moved to the left. The cavity 12 is reduced, the check valve 15 is closed and the oil from the cavity 12 is forced out into the pre-chamber. At this time, oil is sucked in the cavity 13 through the check valve 18. From the moment when the first compression ring goes under hole 8 (point 2), gas pressure drops in the pre-chamber, similar to the pressure drop in the cylinder. In this case, the spring moves the brush and the piston to the right, the cavity 13 is reduced and oil is pumped into the cavity 12 and the pre-chamber, from which some oil can flow to the mirror during this period. This oil is captured by the first compression ring during the upward stroke of the piston and is distributed by it to the cylinder mirror. When the first ring is again between channels 7 and 8, the cycle of oil supply and the operation of the system is repeated. Pumping the system when the engine is not running or an emergency increase in the oil supply during its operation is provided by the boost pump 17 or by transferring to the supply tank I of compressed air through the pipeline 20. The amount of oil supplied to the prechamber is controlled by adjusting the system with the regulating device 19. Invention Formula The cylinder liner is provided with two channels made in its wall and communicating the oil supply device with a cylinder mirror, the channels being located at a distance from one another, which exceeds the height of the compression ring, the body of the oil supply device is made with an internal stepped cavity, and the propellant is made of a step-type scraper and a piston and is placed in the housing with the formation of a pre-chamber and two injection cavities; the stem is provided with oil channels, a check valve and oil grooves, channels chamber communicates with the mirror cylinder diesels, one injection cavity communicates with the prechamber using oily schtoka grooves and the other with the flow tank, and cavities are interconnected by means of oily channels and a check valve in the rod. FIG. MPa 5 L 90 ° srig.Z