Pneumatic double urea tank electronically-controlled urea loading pump built-in filter SCR (silicon controlled rectifier) urea system
A urea tank and filter technology, which is applied to the electronic control of exhaust treatment devices, exhaust devices, exhaust treatment and other directions, can solve the problems of high price and complex system, and achieve the goal of reducing system cost and simplifying system structure. Effect
Inactive Publication Date: 2012-05-16
FAW GROUP
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Problems solved by technology
[0002] At present, the mature urea solution supply and injection systems are all produced by foreign companies, all of which are external filters, some adopt diaphragm pump structure, and some adopt gear pump structure, the system is complicated and the price is high, and they are all system supply , do not agree to break the system for component suppliers
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[0010] Below in conjunction with accompanying drawing, the present invention will be further described: as figure 1 Shown is a pneumatic double urea tank electric control urea filling pump built-in filter SCR urea system, which consists of urea solution filling port 1, auxiliary urea tank 2, water heating pipeline 3, urea solution temperature and liquid level signal 4 , Atmospheric temperature signal 5, SCR inlet temperature signal 6, NOx signal 7, divided into signal I8, signal II9 and signal III11, urea injector 12, urea injector cooling pipeline 13, main urea tank 14, urea filling pump 15 , compressed gas control valve A16, compressed gas control valve B22 and compressed gas control valve C23, gas pipeline a17, gas pipeline b24 and gas pipeline c21, urea tank heating control valve 18, urea infusion tube 19, urea solution filtration It is composed of a device 20; it is characterized in that: the volume of the auxiliary urea tank is 30L-40L, and the urea solution filling port...
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The invention relates to a pneumatic double urea tank electronically-controlled urea loading pump built-in filter SCR (silicon controlled rectifier) urea system, which is characterized in that: an auxiliary urea tank with a volume of 30L-40L is provided with a urea solution loading port, a temperature and liquid level sensor and a heating pipeline; as a pressure tank, a main urea tank is equipped with a compressed air inlet channel and a compressed air release control valve B, a pressure sensor, and a heating pipeline; a compressed air control valve A, the compressed air control valve B and a compressed air control valve C are arranged in a compressed air pipeline between an automobile air reservoir and the main urea tank; a urea solution filter is disposed in a urea solution supply pipeline between the main urea tank and a urea solution injector; and an ECU signal controls three solenoid valves of the compressed air control valve A, the compressed air control valve B and the compressed air control valve C as well as the urea solution injector. The urea system of the invention has simplified structure and reduced system cost, breaks the situation of monopoly by international suppliers in the field, and gives full play to the advantage of independent development.
Description
technical field [0001] The invention relates to an SCR urea system with a built-in filter in a pneumatic double urea tank electric control urea filling pump. Background technique [0002] At present, the mature urea liquid supply and injection systems are all produced by foreign companies, all of which are external filters, some adopt diaphragm pump structure, and some adopt gear pump structure, the system is complicated and the price is high, and they are all system supply , do not agree to break the system for component suppliers. Contents of the invention [0003] The purpose of the present invention is to provide a simple pneumatic double urea tank electric control urea filling pump built-in filter SCR urea system, the system is simple, the cost is low, the heating device of the urea filter is reduced, and the monopoly of international suppliers is broken The situation in this field gives full play to the advantages of self-development and facilitates the layout of th...
Claims
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Login to View More IPC IPC(8): B01D53/94B01D53/56F01N9/00F01N3/20
CPCY02T10/24Y02T10/47Y02A50/20Y02T10/12Y02T10/40
Inventor 李骏邢喜春戈非尹燕升纪英
Owner FAW GROUP