RU2293202C2 - Fuel system of internal combustion engine - Google Patents

Abstract

FIELD: mechanical engineering; internal combustion engines.

SUBSTANCE: invention relates to fuel systems of internal combustion engines. Proposed fuel system contains carburetor with throttle valve, gas nozzle installed in behind-the throttle space of flow-through channel, gaseous fuel feed circuit including series-communicating pressure reducer and gas bottle and acoustic radiator. Electromagnetic valve installed at pressure reduced outlet is connected by pipeline with acoustic radiator and with drive of throttle valve opening depending on angle of turning.

EFFECT: increased economy, improved characteristics of engine under conditions close to maximum power.

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Description

The invention relates to power systems for an internal combustion engine and can be used in engine building.

The closest in technical essence, selected as a prototype, is a power system for an internal combustion engine [RF patent 2101539, IPC 6 F 02 M 13/08, 1998], containing a carburetor in which a flow channel with a throttle valve is located, a gas nozzle installed in the throttle space, a gaseous fuel supply circuit comprising a pressure reducer and a gas cylinder. The gas fuel supply circuit is equipped with an acoustic emitter, the output of which is connected to a gas nozzle, and the input is connected to a pressure reducer.

The disadvantage of this system is the inability to control the supply of gaseous fuel depending on the engine loading conditions, since this is not structurally provided, which leads to unjustified overspending of gas fuel and a possible reduction in engine life.

The technical result is aimed at improving efficiency and improving engine performance in modes bordering on maximum power.

The technical result is achieved by the fact that in the power supply system of an internal combustion engine containing a carburetor with a throttle valve, a gas nozzle installed in the throttle space of the flow channel, a gaseous fuel supply circuit including a pressure reducer and a gas cylinder in series, an acoustic emitter according to the invention at the output a pressure reducer is installed an electromagnetic valve, through a pipeline connected to an acoustic emitter and driven by a throttle slonki opening in function of its angle of rotation, which overlaps the movement of the gaseous fuel to the emitter of the engine operation modes not requiring maximum power, and supplies the gas mixture to the engine operating conditions bordering on the maximum power.

A distinctive feature of the prototype is that an electromagnetic valve is installed at the output of the pressure reducer, through a pipeline connected to an acoustic emitter and driven by a throttle valve that opens depending on its angle of rotation, which blocks the movement of gaseous fuel into the emitter at engine operating modes that do not require maximum power, and provides a gas-air mixture at engine operating modes, bordering on maximum power.

The drawing shows a power system having a carburetor in which there is a flow channel 1 with a throttle valve 2, a gas nozzle 3 installed in the throttle space 4, a gas fuel supply circuit including an electromagnetic valve 5. The gas fuel supply circuit is equipped with an acoustic emitter 8, output which is connected to the gas nozzle 3, and the input is connected by a pipe 9 to the output of the electromagnetic valve 5.

The power system operates as follows.

The gas-air mixture prepared by the carburetor during engine operation enters the throttle space 4 of the flow channel 1. Gaseous fuel from the gas cylinder 7 under excessive pressure enters the pressure reducer 6, in which pressure is stabilized to a specified value. Further, gaseous fuel through the solenoid valve 5, which opens at an angle of opening of the throttle valve of the secondary chamber of more than 80%, thereby ensuring the supply of gaseous fuel through the pipe 9 to the acoustic emitter 8. In an acoustic emitter of a known design, for example direct-jet type, the constant pressure of the gas fuel is converted in high frequency sound pressure. Thus, an increase in efficiency is ensured by the possibility of turning on the supply of the gas-air mixture in engine modes bordering on maximum power.

The feasibility study of the invention is to save gas-air fuel, without reducing the specified engine resource, by turning off the fuel supply in modes that do not require maximum power.

Claims (1)

An internal combustion engine power system comprising a carburetor with a throttle valve, a gas nozzle installed in the throttle space of the flow channel, a gaseous fuel supply circuit including a pressure reducer and a gas cylinder in series, an acoustic emitter, characterized in that an electromagnetic valve is installed at the output of the pressure reducer , through a pipeline connected with an acoustic emitter and driven by a throttle valve, opening depending on its angle and the rotation.