SU1315627A1 - Method for operating of internal combustion engine - Google Patents

Abstract

The invention relates to the field of engine-building and makes it possible to increase efficiency in modes xx. and small loads. The exhaust gases from the diesel cylinder 1 through the exhaust pipe 4, on which the thermal switch 5 is located, enter the catalytic converter 2 and further into the liquid 3. When the exhaust gas temperature decreases below the set value of the operating temperature for this type of catalyst, the thermal relay gives a signal which enters the solenoid valves. The latter are closed and the fuel supply to a part of the engine cylinders is stopped. At the same time, the signal from the thermal switch is supplied through the control mechanism 12 to the bypass dampers 11, which open, and compressed air from the disabled cylinders is fed through conduit 9 to the nozzle 10 for exhaust gas dilution during their release before being released into the atmosphere. 1 il. § (L 00 SL about:

Description

eleven

The invention relates to mechanical engineering, and specifically to exhaust gas aftertreatment systems of diesel engines.

The aim of the invention is to increase the efficiency of cleaning exhaust gases at idle and low engine loads.

The drawing shows a diagram of the device that implements the method of operation of the internal combustion engine.

A device for implementing the inventive method comprises diesel 1, catalytic 2 and liquid 3 neutralizers installed on exhaust pipe 4, on which thermal relay 5 is installed. Magnetic valves 6, powered by electric current source 7, are installed on fuel supply pipes 8. Diesel cylinders 1 communicate with a conduit 9 through which compressed air from the disconnected cylinders is directed to the inlet 10. The conduit 9 is provided with dampers 11 with a control mechanism 12. Diesel 1 is fed from fuel tank 13. The recirculation channel bypasses the humidified exhaust gases into the engine cylinders.

The method of operation of the internal combustion engine is as follows.

The exhaust gases from the cylinders of diesel 1 through the exhaust pipe

4, on which the thermal relay is located

5, enter the catalytic converter 2 and further into the liquid 3. When the exhaust gas temperature decreases below a predetermined operating temperature for a given type of catalyst, the catalytic converter (the lower limit of the operating temperature for feeding a platinum catalyst is 220 ° C, palladium 280 s, etc.) thermal relay 5 generates a signal that is supplied to the solenoid valves 6, the latter are closed and the fuel supply to part of the engine cylinders is stopped. At the same time, the signal from the thermal switch 5 is supplied through

VNIIPI Order 2329/33

Prosy.-polygram. pr-tie, Uzhgorod, st. Project, 4

272

control mechanism 12 to the bypass valves 11, which open, and compressed air from the disconnected cylinders is fed through pipeline 9

in the pipe 10 on the dilution of exhaust gases during their release before release into the atmosphere. The humidified exhaust gases are bypassed to the engine cylinders through the channel.

When several cylinders are disconnected, the load on the remaining operating cylinders of the engine increases, and the exhaust gas temperature increases. When the operating temperature for this catalyst of the catalytic converter is reached, the thermal relay 5 issues a signal to the solenoid valves 6, which open, the fuel enters the cylinder in the disconnected part and the latter begin to work. At the same time, the thermal relay 5, through the control mechanism 12, also sends a signal to the bypass valves 11, which close the entrance to the pipeline 9 and the exhaust gases from all cylinders enter the exhaust pipe 4.

thirty

Claims (1)

Invention Formula The method of operation of the internal combustion engine by supplying fuel to the cylinders, shutting off the fuel supply to part of the cylinders, exhausting gases, controlling their temperature and cleaning the gases in the catalytic converter with their partial recirculation after moistening, in order to increase efficiency exhaust gas cleaning at idle and low engine load modes; fuel supply to part of the cylinders is shut off when the exhaust gas temperature reaches a value below p The working temperature of the catalyst and the air from the deactivated cylinders are directed to mix with the exhaust gases during their release. Circulation 481 Subscription