AUTOMATED EXHAUST GAS PURIFICATION SYSTEM OF ENGINE STAND Russian patent published in 2023 - IPC F02B79/00 F01N3/04 F01N9/00 

FIELD: testing equipment.

SUBSTANCE: invention can be used when testing fuels and oils on engine stands using a system for cleaning exhaust gases of internal combustion engines. The automated exhaust gas purification system of a motor test bench contains an exhaust pipe (1) of the engine (2), an engine crankshaft speed sensor (3) and a receiver (5). The receiver inlet pipe (5) is connected to the exhaust pipe (1) through an intermediate ring (6). The intermediate ring (6) has beveled holes (7) in the body relative to the center, directed inside the receiver (5) and connected to the source of irrigation water. The water is drained through a pipe in the bottom of the receiver (5), in the upper part of which there is a channel for releasing purified exhaust gases. The system contains a dynamometer (9) with a strain gauge (11) for engine torque, a smoke meter (17) with an optical sensor (16) and a soot separator (13). The smoke meter (17) is installed in the exhaust channel of purified exhaust gases. The soot separator (13) is installed in the exhaust pipeline (1) in front of the intermediate ring and is made in the form of a sealed pipeline insert with the central axes of the exhaust gas inlet and outlet shifted in height to a distance not less than the diameter of the engine exhaust pipeline (1). The outlet pipe of the soot separator (13) is made at the same level with its lower bottom and is combined with the inlet channel of the intermediate ring (6). Sprayers (14) are installed in the side walls of the soot separator (13), directed oppositely to each other and perpendicular to the central axis of the exhaust pipeline (1). The sprayers (14) are connected to the source of irrigation water through a shut-off valve (15), the actuator of which is connected to the input of the control unit (12). The engine torque strain gauge (11), crankshaft speed sensor (3) and smoke meter (17) are connected to the inputs of the control unit (12).

EFFECT: reducing emissions of soot and harmful substances into the environment under various load-speed modes of engine operation and combustion conditions of the air-fuel mixture in the engine.

1 cl, 1 dwg