RU83102U1 - GAS DIESEL FUEL SYSTEM - Google Patents

Abstract

A gas-diesel fuel system containing a tank, a fuel priming pump, a fuel filter, an electromagnetic valve, a high-pressure fuel pump, a pressure accumulator, a pressure sensor, a pressure regulator, an electronic control unit, characterized in that it is equipped with upgraded nozzles, a fuel tank, a fuel pre-filter , booster pump, fuel filter, high pressure pump.

Description

The proposal relates to transport engineering and, in particular, can be used in engine building.

Common Rail Fuel System Known (Automotive Engines:

Duty cycles. Indicators and characteristics. Methods for increasing the efficiency of energy conversion / V.R.Buryachko, A.V. Guk. - SPb .: NPIKTS. 2005. p. 284), consisting of a tank, fuel priming pump, fuel filter, solenoid valve, high pressure fuel pump, pressure accumulator, pressure sensor, pressure regulator, electronic control unit.

The specified technical solution is the closest to the declared technical essence and the achieved result and is taken as a prototype. However, the disadvantage of this power system is that it does not allow for the translation of the diesel engine on natural gas.

The objective of the proposal is to ensure the possibility of diesel operation on natural gas.

The solution to this problem is achieved by the fact that the fuel system of a gas diesel engine containing a tank, a fuel priming pump, a fuel filter, an electromagnetic valve, a high pressure fuel pump, a pressure accumulator, a pressure sensor, a pressure regulator, an electronic control unit is equipped with upgraded nozzles, a fuel tank, and a coarse filter fuel, booster pump, fine fuel filter, high pressure pump.

Distinctive features of the prototype is that the gas diesel fuel system is equipped with upgraded nozzles, a fuel tank, a fuel pre-filter, a booster pump, a fuel fine filter, and a high-pressure pump.

Analysis of the proposed solution and prototype allows us to conclude that it meets the conditions of patentability of a utility model.

Figure 1 is a schematic diagram of a gas diesel fuel system.

The gas diesel fuel system consists of a tank 1, a fuel priming pump 2, a fuel filter 3, a solenoid valve 4, a high pressure fuel pump 5, a pressure accumulator 6, a pressure sensor 7, a pressure regulator 8, an electronic control unit 9, upgraded nozzles 10, a fuel tank 11 , coarse fuel filter 12, booster pump 13, fine fuel filter 14, high pressure pump 15.

The fuel system of the diesel engine operates as follows. When the diesel engine is switched to natural gas (gas-diesel cycle), the electronic control unit 9 sends a signal to turn on the electromagnetic valve 4 and to the control system of the high-pressure pump 15 to reduce

supply of diesel fuel, forming a firing dose of diesel fuel.

The fuel priming pump 2 supplies gas from the tank 1 to the fuel filter 3 and through the solenoid valve 4 to the high pressure fuel pump 5. The high pressure fuel pump pumps gas under pressure into the pressure accumulator 6. The pressure in the pressure accumulator is measured by pressure sensor 7 and is maintained at a constant level using the pressure regulator 8. The pressure accumulator 6 is connected by pipelines to the upgraded nozzles 10, as a result of which a high excess is always maintained at the entrance to the upgraded nozzles 10 full-time pressure. At the command of the electronic control unit 9, the valve of the upgraded nozzle 10 opens, opening the first gas supply channel, and gas is supplied to the combustion chamber of the engine at the beginning of the compression process for better mixture formation.

In this case, the ignition dose of diesel fuel from the fuel tank 11 is pumped up by the booster pump 13 and fed through the coarse fuel filter 12 and the fuel fine filter 14 to the high pressure pump 15, which pressurizes the fuel to the upgraded nozzles 10 at the end of the compression stroke in the cylinder engine. Under high pressure, the needle of the upgraded nozzle 10 rises, and the ignition dose of diesel fuel flows through the second channel in the upgraded nozzle 10 into the engine cylinder. The ignition dose of diesel fuel in the engine cylinder spontaneously ignites from the high temperature of the air-gas mixture, igniting the entire mixture.

When moving the engine from the gas-diesel cycle, the electronic control unit 9 will turn off the solenoid valve 4, and the gas supply from the tank 1 will stop. At the same time, the electronic control unit switches the control system of the high-pressure pump 15 to supply the full dose of fuel necessary for the engine to run on diesel fuel.

The application of this technical solution will improve the efficiency of the gas diesel engine and ensure the compactness of the gas diesel power system.

Claims (1)

A gas-diesel fuel system containing a tank, a fuel priming pump, a fuel filter, an electromagnetic valve, a high pressure fuel pump, a pressure accumulator, a pressure sensor, a pressure regulator, an electronic control unit, characterized in that it is equipped with modernized nozzles, a fuel tank, a fuel pre-filter , booster pump, fuel filter, high pressure pump.