Engine Exhaust Single Cycle Sampling System

Abstract

The invention discloses a single-cycle sampling system for engine exhaust gas so as to solve the problem that the single-cycle exhaust gas of an engine cannot be separated. The system comprises a circuit control system, an actuator, a gas storage device and a vacuum degree adjustment device, wherein the actuator comprises a high-frequency electromagnetic valve, a compressed air cylinder, a two-position five-way electromagnetic valve, a crank-link mechanism, a butterfly valve and a high-pressure gas source. The left end of the high-frequency electromagnetic valve is connected with the butterfly valve, and the right end of the high-frequency electromagnetic valve is connected with a quick connector of the gas storage device and a ball valve No.3 of the vacuum degree adjustment device; the crank-link mechanism is connected with a valve stem of the butterfly valve, and the left end of the crank-link mechanism is connected with the compressed air cylinder; the left gas inlet and outlet of the compressed air cylinder are connected with a left gas outlet pipe of the two-position five-way electromagnetic valve, the right gas inlet and outlet of the compressed air cylinder are connected with a right gas outlet pipe of the two-position five-way electromagnetic valve, the left end of the high-pressure gas source is connected with a gas inlet pipe of the two-position five-way electromagnetic valve, and the output end of a solid state relay of the circuit control system is connected with the lead wires of the two-position five-way electromagnetic valve and the high-frequency electromagnetic valve.

Description

technical field [0001] The invention relates to a sampling device applied in the technical field of internal combustion engines, more precisely, the invention relates to an engine exhaust single-cycle sampling system. Background technique [0002] Automobile pollution is one of the most important issues that people are most concerned about and urgently need to solve. When a car is driving in an urban area, it is affected by factors such as traffic signals, bus stops, and pedestrians. Under transient conditions, the engine produces more incomplete combustion products, namely hydrocarbons, due to the harsh combustion conditions. Hydrocarbons are the main factor causing the odor of exhaust gas, and are also an important source of photochemical smog. The hydrocarbon components in hydrocarbons can be quantitatively analyzed by means of chromatographic analysis, which is very important for the selection of high-efficiency catalysts and the search for reducing hydrocarbons. Emissi...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the problem in the prior art that the single-cycle exhaust cannot be separated, and to provide a single-cycle sampling system for engine exhaust

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