SU1638347A1 - Internal combustion engine with forced ignition and evaporator - Google Patents

Abstract

The aim of the invention is to increase the efficiency and reduce toxicity of 6 18 29 P. 13 st. The engine includes a fuel tank 1, fuel drives 2, 4, and 6, fuel battery 5, and an evaporator 7 with a steam separator 8 and a heat exchanger 9. The solenoid valve 18 is controlled by the control unit depending on the operating mode and engine parameters. In the steam separator 8 and the heat exchanger 9, partially placed in the exhaust manifold 10, the liquid fuel evaporates and passes through the steam line 13 to the valve 18, the opening time of which is controlled by the control unit, while the pressure in the evaporator 7 is kept constant by means of the bypass valve 30 and the fuel battery 5. 1 z.p, f-ly, 2 ill. j / 10 o CJ 00 from 4 vj

Description

The invention relates to mechanical engineering, in particular, to power systems for internal combustion engines with an evaporator fuel.

The purpose of the invention is to increase efficiency and reduce toxicity.

FIG. Figure 1 shows schematically an engine with a power supply system, a transverse section; in fig. 2 - diaphragm type fuel accumulator.

The engine includes a fuel tank 1, a fuel line 2 to the fuel pump 3 of diaphragm type, a fuel line 4 to the fuel accumulator 5, a fuel line 6 to the evaporator 7 consisting of a steam separator 8 of a heat exchanger 9 partially placed in the exhaust manifold 10. Power system the engine contains an electric heating element 11 and an electric heating element 12 of the steam pipe 13. In this case, the battery 5 consists of a spring 14, a diaphragm 15, an intake valve 16 and an exhaust valve 17. The engine power supply system also contains an electro A valve 18 and can be made with a vent 19 for the corresponding intake manifold of the intake manifold 20. The engine includes an air filter 21, an air flow thermo-anemometric sensor 22, a throttle air damper 23 in the passage 24 of the intake manifold 20, an intake valve 25 and a cylinder 26 with an outlet 27, heat insulating coatings 28 and, 29, as well as bypass valve 30 with an adjusting screw 31 and pipeline 32. The engine also has a control unit with mode sensors and a temperature sensor 33.

The engine works as follows.

At start-up, fuel from fuel tank 1 through fuel line 2 is pumped by fuel pump 3 through fuel line 4 to fuel cell 5, from which fuel line 6 enters evaporator 7, filling the internal cavity of separators 8. Excess fuel flows into heat exchanger 9. Simultaneously with the start of the engine start, the electric heating element 11 of the evaporator 7 and the electric heating element of the steam line 13 are turned on, heating the fuel in the steam separator to the boiling point of light fractions and the steam line to the temperature ci tim all fractional components of fuel. The fuel evaporated in the separator creates an excess pressure not exceeding the pressure developed in the accumulator 5 by the spring 14 by means of the diaphragm 15, the inlet 16 and the outlet 17

valves. The evaporated fuel enters the steam line 13, creating an overpressure in it. On the intake stroke, the solenoid valve 18 opens

an ejection duct 19 through which the evaporated fuel enters the intake manifold 20 of the engine; air flows there through the air filter 21.

Mixing air and evaporated

0 fuel begins in the intake manifold 20, in the immediate vicinity of the intake valve 25 and ends in the cylinder 26. After the expansion stroke, the exhaust gases through the exhaust channel 27 enter the

5, the exhaust manifold 10 and the heat exchanger 9 is heated. The fuel in it is evaporated and mixed with the fuel in the steam trap 8. Part of the evaporated fuel enters the steam line 13,

0, the other part condenses on the walls of the steam separator 8 and flows into the heat exchanger 9, where the evaporation cycle is repeated. According to the signal of the temperature sensor 33, the power supply of the element 11 is turned off and further

5, the evaporation is due to the temperature of the exhaust gases, and the electric heating element 12 maintains a constant temperature of the steam line 13.

Air flow in the intake manifold

0 20 is controlled by the throttle valve 23 and the fuel consumption by the opening time of the solenoid valve 18 controlled by the control unit in accordance with the electrical signals of the thermometer sensor 22 by the air flow is controlled commensurately with the air flow.

With a sharp decrease in the load, the pressure of the fuel in the evaporator 7 is maintained by the valve 30, and the gaseous

0, the fuel through line 32 is diverted to tank 1, where it is cooled and condensed.

With a sharp increase in load, when there is a sharp increase in the consumption of fuel to prevent pressure drop in the evaporator 7, the accumulator 5 enters into operation, maintaining a constant pressure of liquid fuel in the fuel line 6, resulting in a constant dosing of the required amount of liquid in the evaporator 7 fuel. In the idle mode, the solenoid valve 18 does not open and the fuel supply to the engine is stopped. In all modes, the dosing of fuel according to the amount of air is carried out by the control unit by changing the duration of the opening of the valve 18, also

0 as in the injection systems of liquid fuel in the intake manifold pipes.

Claims (2)

1. Internal combustion engine with forced ignition and evaporator, containing a fuel tank, fuel lines, fuel pump, pressure reducing valve, fuel metering device, made in the form of a solenoid valve installed in the nozzle of each cylinder, intake manifold with rotary throttle valve, the exhaust manifold, the starting electric heating element, as well as the control unit electrically connected with the fuel metering device with the mode and temperature sensors, are distinguished by iy- in that, in order to increase efficiency and reduce toxicity, the engine is provided with fuel vaporizer paroproFig 2 Editor S. Lisin Compiled by M. Ayriyev Tehred M. Morgenthal with water having a steam separator and a heat exchanger in the form of a heat pipe, the lower part of which is located in the exhaust manifold, and the upper is insulated from the external environment and communicated with the steam separator, in the casing wall of which a drainage channel is installed a valve and a channel for supplying liquid fuel; in this case, an electric heating element and a temperature sensor are installed in the steam separator, and the dosing device communicates with the steam separator ploizoliruyuschim coating. 2. The engine according to claim 1, characterized in that the steam pipe is provided with an additional electric heating element. Proofreader A.Osaulenko