SU1337543A1 - Fuel-feed system for internal combustion engine - Google Patents

Abstract

The invention allows to simplify the design and at the same time to reduce its dimensions and weight, reduce toxicity and increase efficiency. The evaporation-surface device of the power supply system is made in the form of a cylindrical cup having a passage 4, connected to the flow channel 2. Radial holes 5 are located in the wall 6 at the bottom 7 of the cup and are made in a number equal to the number of engine cylinders. The outer surface 14 of the bottom of the glass forms an element of localized heat supply and is located in the flow part of the passage channel 15 of the exhaust manifold 16. The nozzle 8 is located near the glass on the side opposite to the supply of heat. From the bottom 7, along the wall 6, the heat flux spreads, therefore the fuel film moving down the wall 6 moves along the growing field T-p. It is heated and evaporated in accordance with the curve of the frictional distillation of the fuel. During the intake stroke of each cylinder, the entire flow of air and vapors from channel 4 is directed to one of the openings 5, in which the flow is highly turbulent and a homogenized mixture is obtained. 2 Il. (L 16 oo with SP 4 CO

Description

From 1 | G1 (). ioiisie refers to mechanical engineering, in i-uu TiiocTH to the power systems of an internal combustion engine.

The aim of the invention is to simplify the design with a simultaneous decrease in size and weight, reducing the toxicity of exhaust gases and improving efficiency.

FIG. Figure 1 shows schematically the proposed supply system for an internal combustion engine; in fig. 2 is a section A —A in FIG. one.

The power supply system for the internal combustion engine comprises a housing 1 with a flow channel 2 and a throttle valve 3 located in the latter, an evaporative surface device made in the form of a cylindrical cup having a passage channel 4 connected to the flow channel 2, radial holes 5 located in the wall 6 at the bottom of the 7 glass, and the fuel supply device, formed by electromagnetic nozzles 8, located at the open end of the glass and having output nozzles (not shown) communicated from the annular fuel an open chamber 9 connected to the passage 4 through the slit 10. The radial holes 5 in the glass are made in an amount equal to the number of engine cylinders (see Fig. 2) and connect the distribution chamber formed in the passage 4 to the inner surface 11 of the bottom 7 and the adjacent part of the surface of the wall 6, with the inlet channels 12 of the intake manifold 13. The outer surface 14 of the bottom 7 of the glass forms an element of localized heat supply and is located in the flow part of the passage channel 15 of the exhaust manifold 16, in connection with which force Nka 8 is located on the glass side opposite to the supply of heat.

The power supply system works as follows.

When the engine is operating, the fuel coming out of the injectors 8 (in a dosed quantity) enters the annular chamber 9, from which through the slit 10 flows to the surface of the evaporating surface element in the form of a uniformly distributed film. At the same time, the air in a regulated amount (by means of a throttle valve) passes from the flow channel 2 to the flow channel 4 of the cylindrical cup, from the bottom 7 of which a heat flux spreads along wall 6. Therefore, the fuel film moving down the wall 6 moves along the build-up

floor-melting temperatures, in connection with which it is heated and evaporated in accordance with the fractional distillation curve of the fuel. The vaporized vapors of the fuel are partly mixed with air in the passage channel 4 of the cylindrical cup, and the final mixing occurs with the passage of air and fuel vapor through the radial holes 5, and during the intake stroke of each cylinder all air and vapor flow from passage channel 4 is directed to one of the holes 5, in which the flow is highly turbulent and a homogenized mixture is obtained, the combustion of which increases economy and reduces the toxicity of exhaust gases. Since the outer surface 14 of the bottom 7 of the glass forms a localized area of heat supply, it provides a simple constructive implementation of the evaporative

0 surface element and does not require special gas pipelines for exhaust gases.

Claims (1)

Invention Formula A power supply system for an internal combustion engine comprising a housing with a flow channel and a throttle valve located in the last one, an evaporating surface device configured with a flow channel connected to the housing flow channel, and having a localized element for supplying heat to the heated exhaust gas surface, and a fuel supply device, located at the evaporative surface device on the side opposite to the element of localized heat supply, the passage channel and the pairing device communicates with an intake manifold having inlet channels according to the number of cylinders, characterized in that, in order to simplify neither the design with a simultaneous decrease in size and weight, reduction in exhaust emissions and increased efficiency, the evaporative surface device is made in the form of a cylindrical cup having radial holes located in the wall at the bottom according to the number of cylinders, and the outer surface of the bottom of the cup forms an element of localized heat supply , and the inner surface of the bottom together with the adjacent part of the wall forms in the passage channel distribution chamber, communicated through the radial holes with the inlet channels of the intake manifold.