Pneumatic dual-urea tank urea one-way valve control water heating silicon controlled rectifier (SCR) urea system
A technology of urea tank and one-way valve, which is applied to the electric control of exhaust treatment devices, exhaust treatment, exhaust devices, etc., can solve the problems of high price and complex system, and achieve the goal of small gas consumption and reduced system cost Effect
Inactive Publication Date: 2011-02-23
FAW GROUP
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[0002] At present, the mature urea solution supply and injection systems are all produced by foreign companies. Some adopt diaphragm pump structure, and some adopt gear pump structure. supplier
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[0010] Below in conjunction with accompanying drawing, the present invention will be further described: as figure 1 A pneumatic double urea tank urea one-way valve control water heating SCR urea system is shown, which consists of urea solution filling port 1, auxiliary 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, ECU control signal is divided into signal Ⅰ 8, signal Ⅱ 9 and signal Ⅲ 11, urea injector 12, urea injector cooling pipeline 13, main urea tank 14, urea one-way valve 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 fil...
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The invention relates to a pneumatic dual-urea tank urea one-way valve control water heating silicon controlled rectifier (SCR) urea system, which is characterized in that: the capacitance of an auxiliary urea tank is 30 to 40L, a urea liquid filling opening is formed at the top of the auxiliary urea tank, and a temperature and liquid level sensor and a heating pipeline are arranged at the top of the auxiliary urea tank; the main urea tank is a pressure vessel tank, and a compressed gas inlet channel, a compressed gas release control valve B, a pressure sensor and a heating pipeline are arranged on the main urea tank; a compressed gas control valve A, a compressed gas control valve B and a compressed gas control valve C are arranged in a compressed air pipeline between an automobile air reservoir and the main urea tank; a urea liquid filter is arranged in a urea liquid supply pipeline between the main urea tank and a urea liquid injector; and an electronic control unit (ECU) signal controls three electromagnetic valves, namely the compressed gas control valve A, the compressed gas control valve B and the compressed gas control valve, and the urea liquid ejector. The system has low air consumption, can reduce the cost of the system, breaks the monopoly of international suppliers in the field and gives full play to autonomous development.
Description
technical field [0001] The invention relates to a pneumatic double urea tank urea one-way valve controlling water heating SCR urea system. Background technique [0002] At present, the mature urea liquid supply and injection systems are all produced by foreign companies. Some adopt diaphragm pump structure, and some adopt gear pump structure. supplier. Contents of the invention [0003] The purpose of the present invention is to provide a pneumatic double urea tank urea one-way valve to control water heating SCR urea system, which has small gas consumption, reduces cost, breaks the monopoly situation of international suppliers in this field, fully exerts the advantages of independent development, and facilitates the whole process. car arrangement. [0004] The technical scheme of the present invention is achieved in the following way: a pneumatic double urea tank urea one-way valve controls the water heating SCR urea supply and injection system, which consists of urea so...
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IPC IPC(8): F01N9/00B01D53/94B01D53/56F01N3/20
CPCY02T10/24Y02T10/47Y02A50/20Y02T10/12Y02T10/40
Inventor 李骏邢喜春戈非吴君华尹燕升纪英
Owner FAW GROUP