SU1273626A2

SU1273626A2 - Device for feeding fuel-air mixture to internal combustion engine

Info

Publication number: SU1273626A2
Application number: SU853910621A
Authority: SU
Inventors: Александр Владиславович Моисеенко; Станислав Андреевич Романов; Юрий Борисович Свиридов
Original assignee: Научно-производственное объединение по топливной аппаратуре двигателей
Priority date: 1985-06-10
Filing date: 1985-06-10
Publication date: 1986-11-30

Description

Изобретение относитс к машиностроению , в частности к устройствам питани топливовоздушной смесью двигател внутреннего сгорани , и вл етс усовершенствованием известного устройства по основному авт.св. № 1002647.The invention relates to mechanical engineering, in particular, to power supply devices with an air-fuel mixture of an internal combustion engine, and is an improvement of the known device according to the main auth. No. 1002647.

Цель изобретени - повьшение экономичности двигател и снижение токсичности отработавших газов.The purpose of the invention is to increase engine economy and reduce exhaust emissions.

На фиг. 1 изображено предлагаемое устройство питани топливовоздушной 1смесью двигател внутреннего сгорани , разрез; на фиг, 2 - разрез А-А на фиг. 1.FIG. 1 shows the proposed power supply device for an air-fuel 1 mixture of an internal combustion engine, a slit; FIG. 2 is a section A-A in FIG. one.

Устройство питани топливовоздушной смесью двигател внутреннего сгорани (фиг. 1) содержит корпус 1,установленный между головкой 2 (фиг.1 2) двигател с одной стороны и впускным патрубком 3 и выпускным патрубком 4 с другой. В корпусе 1 установлен вкладьш 5, в котором выполнено отверстие 6 с замкнутой боковой стенкой 7. Отверстие 6 предназначено дл прохода отработавшйх газов двигател . Во вкла дьппе 5 также выполнена проточка 8 с незамкнутой боковой стенкой 9, на участке между точками 10 и 11 образующа нагревательную поверхность 12. Топливоподающа форсунка 13 установлена в корпусе 1 так, что ось ее соплового отверсти 14 расположена параллельно касательной 15 и направл ющей 16 боковой стенки 9 и смещена внутрь проточки 8 на величину радиуса струи. В пазах 17, выполненных в корпусе 1, установлена перегородка 18 с отвер сти ми 19, образующа вместе с отверс тием 20 в корпусе 1 канал 21 дл прохода воздуха, а перегородка 18 размещена с зазором относительно нагревательной поверхности 12 и образует с ней испарительную полость 22, сообщенную с каналом 21 через отверсти 19, причем сопловое отверстие 14 сооб щено с испарительной полостью. Герметизаци вкладыша 5,головки21 и впускного и выпускного патрубков 3 и 4, а также фиксаци перегородки |18 в осевом направлении осуществл етс прокладками 23, а перегородка 18 размещена так, что не перекрывает впускной канал 24 головки 2.The power supply device by the air-fuel mixture of the internal combustion engine (Fig. 1) comprises a housing 1 mounted between the head 2 (Fig. 1 2) of the engine on one side and the inlet pipe 3 and the outlet 4 on the other. The housing 1 has an insert 5 in which an opening 6 is made with a closed side wall 7. The opening 6 is intended for the passage of engine exhaust gases. In addition, the groove 8 is also made with an open side wall 9, in the area between points 10 and 11 forming the heating surface 12. The fuel injection nozzle 13 is installed in the housing 1 so that the axis of its nozzle hole 14 is parallel to the tangential 15 and the side guide 16 wall 9 and is offset inside the groove 8 by the magnitude of the jet radius. In the grooves 17 made in the housing 1, a partition 18 with holes 19 is installed, forming together with the opening 20 in the housing 1 a channel 21 for the passage of air, and the partition 18 is placed with a gap relative to the heating surface 12 and forms with it an evaporation cavity 22 communicated with the channel 21 through the holes 19, the nozzle hole 14 being in communication with the evaporating cavity. The sealing of the liner 5, the head 21 and the inlet and outlet nozzles 3 and 4, as well as the fixation of the baffle | 18 in the axial direction, is carried out by gaskets 23, and the baffle 18 is placed so that it does not block the inlet channel 24 of the head 2.

Устройство питани работает следующим образом.The power device operates as follows.

Claims

The closed side wall 7 of the liner 5 receives heat from the exhaust gases of the engine. Reproducible heat is transferred through the plug 5 to the open side wall 9. A fuel ejecting from the nozzle orifice 14 of the nozzle 13 into the evaporation cavity 22, as a result of a tangential impact with the wall 9, spreads into the film of fuel that continues its movement along the heating surface 12. Since air flow in the channel 21 is separated by a partition 18 from the fuel jet and film, it does not affect their development. In the wall 9 along the rail 16, as a result of one-sided heat supply from the exhaust gases, an increase in the temperature field is formed, the minimum temperature of which is located at point Y. This temperature minimum does not exceed the initial boiling temperature of the fuel. The end zone of evaporation of the fuel fractions is set automatically. The evaporation of high-boiling fractions ends near the .11 point. In the area near the point 11 topics. The surface temperature exceeds by 4050 ° C the temperature of the end of the fractional distillation of the fuel to ensure the evaporation of residues. As the fuel evaporates, the pressure under the bulkhead 18 rises and only the evaporated fuel through the holes 19 enters the channel 2.1. Fuel vapors picked up by the air flow are mixed with water while moving along the intake tract and in the cylinder. The air flow, the passage through the duct 21, is in contact only with the cold case 1 and the partition 18, therefore its heating is negligible. The complete evaporation of the fuel in the intake tract, the increase in the engine's weight content of the engine contribute to the efficiency of fuel combustion. This reduces fuel consumption and reduces exhaust emissions. In addition, the complete evaporation of fuel eliminates the uneven distribution of fuel in the cylinders, which also contributes to a more economical operation of the engine on lean mixtures. 31 The invention of the device power supply air-fuel mixture of an internal combustion engine according to auth. No. 1002647, characterized in that, in order to increase engine efficiency and reduce exhaust emissions, it further comprises a baffle with openings installed 273 J 264 in the bore of the body shell along the open side wall and positioned with a gap relative to the heating surface, forming a vaporization cavity with the partition, and the nozzle orifice of the nozzle communicating with the evaporation cavity, the latter being connected to the air passage through the holes of the partition.

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