SU653420A1 - Internal combustion engine fuel supply system - Google Patents

Description

for example, by a carburetor, either directly, or through a booster pump (not shown in the drawing). The mixer 2 has an orifice 8 in the upper part. It is a gas outlet from the internal cavity 9 of the mixer 2. The supply and discharge pipes 3 and 6 are connected to the internal cavity 9 and their ends 10 and 11 are located in the latter and are directed upwards. In this case, the end 10 of the supply line 3 is located below the end. II discharge pipe 6. Mixer 2 can be made removable.

The power supply system works as follows. Before starting the engine in conditions of low ambient temperature, the valve 4 is opened and the fuel with low boiling temperature (propane) through the supply line 3 enters the internal cavity 9 of mixer 2. Since propane has a lower specific weight than the main one in tank 1 fuel (gasoline), then when it enters the mixer 2, it moves upwards within the internal cavity 9 of mixer 2. In this case, propane is mixed with the main fuel, and the mixture, which has the greatest concentration of propane, will be in the upper In it, parts of the internal cavity 9 of the mixer 2, in which the end II of the discharge pipe 6 is located. After supplying propane from the tank 5, the valve 4 is closed and the engine is started. Since the end 11 of the discharge pipe 6 is located in the upper part of the internal cavity 9, at the first moment a mixture with the greatest concentration of propane enters the carburetor, which ensures easy start of the engine in conditions of low ambient temperature. The composition of the mixture is controlled depending on the ambient temperature, and the volume of the mixer is performed depending on the type of engine to ensure a reliable start.

After the engine is started up, as the mixture is developed from the internal cavity 9, the main fuel flows from the tank 1 through the open lower part of the mixer 2, and the engine automatically switches to the main fuel supply. If in the process of moving fuels in the inner

The cavity 9 of the mixer releases gaseous components, then they are discharged from the mixer through the throttle opening 8 and enter the upper part of the tank 1, which prevents the formation of steam plugs in the exhaust pipe 6 and the engine stop.

The mixer 2 (see Fig. 2) may have a spherical shape, and the throttle hole 8 may be formed by a jet 12, pressed in the upper part.

Such an embodiment of the system ensures good mixing of the fuel components and powering the engine at the first moment of starting the mixture with the highest concentration of fuel having a low boiling point, and thus a reliable engine start is achieved with simple maintenance of the system and using carbon fuels with a low boiling point.

Claims (2)

1. The power supply system for an internal combustion engine, containing a fuel tank, located in its lower part, a mixer, made with an open c. downstream and fitted with a gas outlet and connected to the internal cavity of the mixer supply line for the component of another fuel and outlet line for the engine fuel dosing device, characterized in that, in order to improve the quality of mixing of the fuel components, the gas outlet is made in the form The throttle holes in the upper part of the mixer, and the ends of the inlet and outlet pipes are placed in the internal cavity of the mixer and directed upwards. 2. A system according to claim 1, characterized in that the end of the discharge pipeline is located above the end of the supply pipeline. Sources of information taken into account in the examination 1. US patent No. 3259119, CL. 123-187.5. 1966. 2. US Patent No. 2980172, cl. 165-110. 1961.