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Urea consumption deviation fault simulation device and method

A technology of deviation faults and simulation devices, applied in the direction of instruments, electrical testing/monitoring, control/regulation systems, etc., can solve problems such as urea waste, environmental pollution test costs, etc., to reduce the burden on enterprises, avoid waste and environmental pollution, low cost effect

Active Publication Date: 2018-04-20
WEICHAI POWER CO LTD
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Problems solved by technology

[0009] The purpose of the present invention is to provide a urea consumption deviation fault simulation device and simulation method to solve the problems of urea waste, environmental pollution and high test cost in the existing urea consumption deviation fault simulation

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  • Urea consumption deviation fault simulation device and method

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Embodiment Construction

[0034] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0035] Such as figure 1 As shown, the present invention provides a urea consumption deviation fault simulation device, including a weighing mechanism 1, a measuring cylinder 2, a liquid level sensor 3, a urea nozzle 4, and an ECU 5, wherein:

[0036] The weighing mechanism 1 is used to weigh the measuring cylinder 2 and the urea solution in the measuring cylinder 2, and the weighing mechanism 1 is sequentially provided with a weight display 11, an initial value setting button 12, an alarm deviation value, etc. from left to right. Setting panel 13 and zero return button 14, wherein weight indicator 11 is used for displaying the weight of the urea solution in measuring cylinder 2 and measuring cylinder 2, initial value setting button 12 is used for setting reference quality, alarm deviation value sett...

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Abstract

The present invention belongs to the technical field of urea consumption deviation detection, and discloses a urea consumption deviation fault simulation device and method. The urea consumption deviation fault simulation device comprises a weighing mechanism, a measurement cylinder arranged on the weighing mechanism, a liquid level sensor arranged on the measurement cylinder and configured to detect a liquid level of urea solution in the measurement cylinder, a urea nozzle connected with the measurement cylinder, and an ECU connected with the liquid level sensor and the urea nozzle. The urea consumption deviation fault simulation device can achieve simulation of urea consumption deviation faults and replaces a mode of simulation through adoption of urea leakage in the prior art so as to avoid urea waste and environment pollution; and moreover, the urea consumption deviation fault simulation device is employed for simulation, is low in cost and can effectively reduce the burden of enterprises.

Description

technical field [0001] The invention relates to the technical field of urea consumption deviation detection, in particular to a urea consumption deviation fault simulation device and simulation method. Background technique [0002] As a kind of power machinery, diesel engine has made outstanding contributions to the development of society, but it also causes environmental pollution. With the increasingly stringent national regulations, the requirements for diesel engine emissions are getting higher and higher, and it is becoming more and more difficult to achieve emission compliance only by improving engine technology. In this case, the SCR after-treatment system is introduced. The basic working principle of the SCR system: the exhaust gas flows out of the turbocharger and enters the exhaust pipe, and at the same time, the urea injection unit installed on the exhaust pipe sprays a certain amount of urea aqueous solution into the exhaust pipe in the form of mist, and the urea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B23/02
CPCG05B23/0213G05B2219/24065
Inventor 施泰峰孟媛媛刘玉伟孟强
Owner WEICHAI POWER CO LTD
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