Pneumatic single-urea box full-deflating emptying pipeline SCR urea system
A urea tank, pneumatic technology, applied in exhaust treatment, exhaust device, engine components, etc., can solve the problems of high price, incomplete emptying, complex system, etc., and achieve the effect of reducing system cost
Inactive Publication Date: 2011-02-16
FAW GROUP
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Problems solved by technology
[0002] At present, the mature direct-injection urea solution supply and injection systems are all produced by foreign companies. Some adopt diaphragm pump structure, and some adopt gear pump structure. The price is very high, it is all system supply, do not agree to break the system as a component supplier
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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 single urea tank fully deflated and empty pipeline SCR urea system, which consists of urea solution filling port 1, urea tank 2, water heating pipeline 3, urea solution temperature and level signal 4, and atmospheric temperature signal 5 , SCR inlet temperature signal 6, NOx signal 7, urea tank pressure signal 10, ECU control signal is divided into signal Ⅰ 8, signal Ⅱ 9, signal Ⅲ 11, urea injector 12, urea injector cooling pipeline 13, urea tank heating control valve 16. Compressed gas control valve A 14, compressed gas control valve B 20, compressed gas control valve C 21, compressed gas pipeline I15, compressed gas pipeline II19 and compressed gas pipeline III22, urea infusion tube 17, urea liquid filtration Composed of device 18; it is characterized in that: urea solution filling port 1, temperature and liquid level sensor 4, urea tank pr...
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The invention relates to a pneumatic single-urea box full-deflating emptying pipeline SCR urea system, which is characterized in that a urea liquid feed port, a temperature and liquid level sensor, a urea box pressure sensor and a heating pipeline are distributed on the upper surface of a urea box; compressed gas enters into a compressed gas pipeline I and a compressed gas pipeline III, and gas is deflated to a compressed gas solenoid valve B; a compressed gas control valve A, a compressed gas control valve B and a compressed gas control valve C are arranged in a compressed gas pipeline between an automobile air reservoir and the urea box; and a urea liquid filter is arranged in a urea liquid feed pipeline between the urea box and a urea liquid ejector; and an ECU signal controls the compressed gas control valve A, the compressed gas control valve B, the compressed gas control valve C and the urea liquid ejector. The invention has the advantages of thoroughly emptying the urea liquid in the pipelines of the system, and can reduce the system cost, break the situation that international suppliers monopolize the field, and give full play to the autonomic development superiority thereof.
Description
technical field [0001] The invention relates to a pneumatic SCR urea system for single urea tank fully deflated and empty pipeline. Background technique [0002] At present, the mature direct-injection urea solution supply and injection systems are all produced by foreign companies. Some adopt diaphragm pump structure, and some adopt gear pump structure. The price is high, it is all system supply, do not agree to break the system as a component supplier. Contents of the invention [0003] The purpose of the present invention is to provide a pneumatic single urea tank full deflation and emptying pipeline SCR urea system, which reduces the cost, breaks the monopoly of international suppliers in this field, gives full play to the advantages of independent development, and facilitates the layout of the whole vehicle . [0004] The technical solution of the present invention is achieved in the following way: a pneumatic single urea tank full deflation emptying pipeline SCR ur...
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IPC IPC(8): B01D53/56B01D53/94F01N3/24F01N9/00F01N3/20
CPCY02T10/24Y02T10/47Y02A50/20Y02T10/12Y02T10/40
Inventor 李骏邢喜春戈非朱宏志尹燕升纪英
Owner FAW GROUP