SU892003A1 - Apparatus for heating combustible mixture of i.c. engine - Google Patents

Description

(54) DEVICE FOR HEATING COMBUSTIBLE MIXTURE OF INTERNAL COMBUSTION ENGINE

I

The invention relates to a motor structure, in particular to fuel supply systems for an internal combustion engine, for example a rotary piston.

A device for heating a combustible mixture of an internal combustion engine (Zenit-Duplex system) is known.

A disadvantage of the known device is that when feeding a combustible mixture through the main channel, the fuel film moving along the pipe walls leads to an increase in fuel consumption and higher toxicity of the exhaust gases.

The purpose of the invention is to increase efficiency by reducing the possibility of the occurrence of a fuel film on the walls of the main channel and, consequently, reducing the toxicity of exhaust gases.

This goal is achieved by the fact that the main channel has an inclined annular seal located in front of the valve at the entrance to the auxiliary channel.

The drawing shows a diagram of the device.

The device comprises a carburetor 1, an intake pipe 2 with a main 3 and an auxiliary 4 channels adjacent to the engine body 5. The main channel 3 has a valve 6, kinematically connected to the throttle valve 7 of the carburetor 1 and an inclined annular recess 8 located at the entrance to the auxiliary channel 4. In the auxiliary channel 4 at the exit to the main channel 3 there is an evaporation chamber 9 in contact with the outlet U collector mounted on the engine housing 5.

Claims (1)

The device works as follows. 8 At idle conditions and partial loads (when the flap 5 of the main channel 3 is completely closed), for operation of vehicles in urban conditions, the fuel mixture into the engine chamber enters through auxiliary channel 4 having a small bore and an evaporating chamber 9 in contact with the exhaust manifold 10. This allows, due to heat exchange, to prepare and supply a dry combustible mixture to the engine working chamber. Fuel film moving along the walls of the main channel 3 and able to penetrate the gaps between the flaps. 6 and the walls of the main channel 3, reaches the provided inclined annular recess 8 and enters the auxiliary channel 4 along its s-Genkal, is heated and turns into a gaseous condition in the evaporation chamber, and gets into the combustion chamber in a dry form. At full load, when the flap 6 is fully open and flammable. The mixture into the engine chamber 5 passes through the main channel 3, which has a commonly used flow area, and is not heated, thus avoiding a decrease in the maximum engine j oiOHOCT due to excessive heating of the combustible mixture in the auxiliary Tsanapa 4. 3 Fuel film moving from the walls of the main channel 3, as well as when working at idle and partial loads, reaches the inclined annular recess 8 and along its walls enters the auxiliary channel 4. The invention allows for all engine operating modes The liquid phase of the combustible mixture of the fuel film is directed to the evaporation chamber 9 and thereby reduce the fuel consumption and the toxicity of the exhaust gases. Apparatus of the Invention A device for preheating the combustible mixture of an internal combustion engine, comprising a tail pipe installed on the engine casing and having a main channel with a valve communicated with each other, an auxiliary channel with an evaporation chamber and, adjacent to the latter, an exhaust gas manifold, about l and h and u sch ee.s. By the fact that, in order to increase the economy and reduce toxicity, the main channel has an inclined annular recess located in front of the gate at the entrance to the auxiliary channel. Sources of information taken into account in the examination 1. Andreev V. I. and others. Mixing in carburetor engines. M., Mashchinostroenie, 1975, p. 159, fig. 90.