SU1562496A1 - Method of arranging the working process of diesel engine - Google Patents

Abstract

The invention relates to the diesel engine industry and makes it possible to increase the efficiency of the diesel working process by reducing the time of pre-flame reactions. For this, exhaust gases in an amount of 10 ... 100% by volume of the fuel supply are introduced into the fuel, namely, into the high pressure line through a check valve controlled by vacuum waves in the line. Gas extraction for injection into the high pressure line of this cylinder is advisable to produce from another cylinder. 1 hp f-ly, 2 ill.

Description

The invention relates to the organization of work processes of diesel engines by influencing the combustion process with an additive of exhaust gases (VG) to a combustible mixture.

The purpose of the invention is to reduce the time of pre-flame reactions and, reduce exhaust emissions, i.e. improving the quality of the organization of the workflow diesel engine

Fig. 1 is a schematic diagram of an apparatus for carrying out the method; figure 2 - oscillograms of his work, where Pr - fuel pressure, C - the angle of rotation of the shaft, h 0 (with - the rise of the check valve ..

This goal is achieved by introducing the VG additive into the fuel in the high-pressure line of the LVD near the nozzle, the introduction of the VG additive is led through a check valve controlled by the rarefaction waves in the LVD formed after the fuel supply is cut off with the suction of the injection valve. diesel in the vicinity of the exhaust valve in the amount of 10-100 vol.% of the supply of J.

The supply of VG directly into the fuel does not impair the diesel engine fill indicators and does not reduce the coefficient of excess air in the cylinder. Due to the injection of VG directly into the fuel of the SC, the pre-flame reactions start already WJ in the channels and the injector nozzle, thanks to elevated temperatures Ј of the fuel and VG. To ensure the after-1 QQ of it, VG is collected near the valve outlet f with minimal losses to the heatsink from the VG, and VG is introduced near the nozzle, into its channels or even in the cavity of the nebulizer. The supply of VG through a check valve controlled by vacuum waves provides a highly dispersed emulsion of diesel fuel with VG, which contributes to a good distribution of the active centers in the fuel and, consequently, an increase in the likelihood of the emergence of new centers of more efficient self-ignition.

An additional effect of introducing SH into the fuel is an improvement in the spraying of fuel in the flare due to boiling up of the fuel droplets due to the pressure drop in the medium around the fuel droplets when it is injected into the cylinder.

The device contains a high pressure fuel pump 1 (high pressure pump) with a discharge valve 2 with a discharge valve (not shown). The high-pressure line 3 (LVD) connects the high-pressure pump 1 with a closed-type injector A mounted on a diesel engine 5. Cavity

pump 1 prepared at the nozzle or in its channels fuel with additive VG enters the cylinder of a diesel engine. The gas dissolved in the fuel after the fuel is injected into the cylinder, where the pressure "lower than the fuel pressure in the LHD, is released (degassed) from the fuel, improves mixing, due to the boiling up of JQ droplets and significantly reduces the ignition delay period and the VG smoke.

A suitable amount of the additions of injected VG is 10-100 vol.% Of the fuel cycle, and preferably the exhaust channel near the exhaust 15 is 30-80 oo.%. Also target20

25

The valve 7 has a channel 8 with thermal insulation 9 connected through a reverse kpa-pan 10 with a low pressure valve 3 and preferably with channels in the nozzle b in the maximum proximity to its spray gun.

The dosing of the VG flow rate can be carried out in any known manner, for example, by throttling gas at the inlet to the check valve, by closing the check valve, by performing a check valve with an anti-corrective element. In this case, at the inlet to the check valve 10 is installed choke 11.

When the diesel engine is working, after the fuel supply pump fuel cut-off 1, when the injection valve 2 has set in, there are rarefaction waves C, if4 and, the check valve (holt) and SH rise from the outlet channel cavity 6 through channel 8 through the check valve 10 to LCD 3 Due to the repeated passage of the waves at valve 10 (waves cf, MF, and), Vg advance into the fuel in the LVL in the form of a series of successive portions, which are due to pressure fluctuations in the LVD. well dispersed, partially dissolved in the fuel, partially emulsified. At the next fuel cycle

thirty

It is necessary to select different CGs for injection into the LVD of this cylinder from another cylinder, the exhaust process from which is closest to the process of cutting off the fuel supply in the fuel system of this cylinder.

Claims (1)

1. The method of organizing a diesel engine workflow, which involves introducing an additive into the fuel and supplying fuel with an additive to the nozzles of the diesel cylinders, the additive being introduced into the high-pressure line through a check valve controlled by discharge waves generated by suction of the discharge valve after the supply is cut off fuel, characterized in that, in order to intensify the combustion process and reduce the level of toxicity of exhaust gases, exhaust gases in the amount of 10-100 are used as additives b.% of the po- fuel problem. 2 ° The method according to claim 1, wherein the exhaust gases supplied to the high pressure line of each of the cylinders are taken from the other cylinder. 624964 pump 1 prepared at the nozzle or in its channels fuel with additive VG enters the cylinder of a diesel engine. The gas dissolved in the fuel after the fuel is injected into the cylinder, where the pressure of the fuel pressure in the LHD is released (degassed) from the fuel, improves the mixture formation due to the boiling up of JQ droplets and significantly reduces the ignition delay period and the VG smoke. A suitable amount of an additive for injected VG is 10-100 vol.% Of the fuel cycle, and preferably 30-80 oo.%. It is also expediently 30-80 °.%. Also It is necessary to select different CGs for injection into the LVD of this cylinder from another cylinder, the exhaust process from which is closest to the process of cutting off the fuel supply in the fuel system of this cylinder. Formula invented 1. The method of organizing a diesel engine workflow, which involves introducing an additive into the fuel and supplying fuel with an additive to the nozzles of the diesel cylinders, the additive being introduced into the high-pressure line through a check valve controlled by discharge waves generated by suction of the discharge valve after the supply is cut off fuel, characterized in that, in order to intensify the combustion process and reduce the level of toxicity of exhaust gases, exhaust gases in the amount of 10-100 are used as additives vol.% of fuel supply. 2 ° The method according to claim 1, wherein the exhaust gases supplied to the high pressure line of each of the cylinders are taken from the other cylinder. FIG. I