SU427158A1 - DEVICE FOR LIGHTING THE STARTING OF INTERNAL COMBUSTION ENGINE - Google Patents

Description

one

EH-known devices for facilitating engine start-up burned in the presence of negative temperature conditions, i.e., i.e., an evaporator equipped with an electric heating element with a liquid fuel supply channel, in which a check valve is installed, and a gas-removal outlet 1.

The disadvantage of the described device is the low heat content of the fuel vapor supplied to the engine from the evaporator during start-up. As a result, a significant portion of the vaporized fuel may condense on the cold walls, worsening the mixture formation and making the engine difficult to start.

The purpose of the present invention is to increase the heat content of 1 iov. To achieve this goal, a pressure reducing valve equipped with a shut-off valve is placed in the vapor fuel removal channel.

In order to ensure explosion safety, a safety valve has been installed in the evaporator cavity.

As is known, the boiling point of a liquid in a closed vessel increases with increasing pressure in it. This effect is used in the proposed device.

The vapor temperature of the starting fuel, such as gasoline, can rise up to 200-250 ° C before being fed into the engine, which contributes to a decrease in the condensation of the vapor on the cold walls when the engine is fed into the engine, improving the mixture formation, raising the temperature of the mixture and facilitating its ignition.

The drawing shows a diagram of the proposed device.

The device contains an evaporator / fuel, the cavity 2 of which serves as a tank for starting fuel, inlet channel 3 with a check valve 4 installed in it, safety valve 5, pressure reducing valve 6 installed in the exhaust channel 7 and electric heating element 8.

The device works as follows. The fuel, for example, from the tank through the check valve 4 through the inlet channel 3 enters the cavity 2 of the evaporator 1. After switching on the electric heating element 8, the fuel in the cavity 2 of the evaporator / heats up and expands, the pressure in the evaporator / increases, the return valve closes. Upon reaching the established vapor pressure of the fuel vapor in the evaporator, and, consequently, when their temperature rises, the reduction valve 1 of the valve 6 opens and releases the vaporizer / vaporous fuel that passes through channel 7 to the engine cylinder.

If the starting fuel is supplied directly to the engine cylinder, the reduction valve 6 performs the function of a check valve and, with a flash in the engine cylinder, prevents the penetration of hot gases through the exhaust channel 7 into the evaporator cavity 2 /.

When the pressure increases in excess of the set pressure valve, the safety valve opens, n 5, and releases part of the vaporized fuel to the atmosphere.

After the electrical heating element 8 is turned off, the pressure in the evaporator / decreases, the check valve 4 opens and the cavity 2 of the evaporator 1 is refilled with starting fuelOL, after which the device is ready for the next start.

Subject invention

Claims (2)

1. A device for facilitating the start of an internal combustion engine at negative temperatures, containing an evaporator fitted with an electric heating element with a liquid fuel supply channel in which a check valve is installed and a vapor fuel removal channel, characterized in that in order to increase the heat content vapors, in the pipe of the vapor fuel outlet, the reduction valve, equipped with a stop valve, is stirred. 2. The device according to claim 1, characterized in that, in order to ensure explosion safety, a safety valve is installed in the evaporator cavity.