Electromagnetic urea pump for diesel engine exhaust treatment

Abstract

An electromagnetic urea pump for diesel engine exhaust treatment comprises a shell and a rear cover. An inner cavity is formed between the shell and the rear cover, a push rod is arranged in the inner cavity, the outer circle of the push rod is sleeved with a base, an armature and a spring, the portion between the base and the armature is sleeved with a wire frame and a varnished wire, the portion between the armature and the wire frame is sleeved with an embedding sleeve, and an electromagnet shell is arranged between the wire frame and the shell. A valve seat and a valve deck are arranged at the front end of the shell, two valve plates are arranged between the valve deck and the valve seat, and a water inlet and a water outlet are formed in the positions, corresponding to the two valve plates, of the valve deck. A membrane is arranged between the valve seat and the shell and provided with a first sealing line and a second sealing line. After the varnished wire is electrified, a main magnetic circuit is generated, so that the armature is made to drive the push rod to move, the push rod drives the membrane to reciprocate, and the process is repeated to continuous spray urea. Electromagnetic induction is adopted to drive the membrane to reciprocate, and the electromagnetic urea pump for diesel engine exhaust treatment has the advantages that the structure is simple, lubrication is not needed during membrane operation, the overall size is small, flow control is flexible, using is convenient, and cost is low.

Description

technical field [0001] The invention relates to the technical field of diesel engines, in particular to an electromagnetic urea pump for diesel engine tail gas treatment. Background technique [0002] Existing diesel engines must be equipped with an additional system to fully react urea and exhaust gas to meet emission standards in compliance with regulations; the urea discharge system requires a high-pressure, quantitative power source to inject urea into the exhaust pipe converter. The current technology cannot realize this function, thus affecting the development of the diesel automobile industry. Contents of the invention [0003] The purpose of the present invention is to solve the deficiencies of the prior art, and the present invention provides an electromagnetic urea pump for diesel engine tail gas treatment. [0004] The technical solution adopted by the present invention to solve the technical problem is: an electromagnetic urea pump for diesel engine exhaust ga...

AI Technical Summary

Problems solved by technology

[0002] Existing diesel engines must be equipped with an additional system to fully react urea and exhaust gas to meet emission standards in compliance with regulations; the urea discharge system requires a high-pressure, quantitative power source to inject urea into the exhaust pipe converter. The current technology cannot realize this function, thus affecting the development of the diesel automobile industry

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