Urea quality detection device
A detection device and quality technology, applied in measurement devices, color/spectral characteristic measurement, instruments, etc., can solve the problems of SCR system hardware damage, post-processing component damage, SCR system damage, etc., and achieve simple structure, easy manufacturing, Guarantee the effect of stable operation
Pending Publication Date: 2022-07-29
GREAT WALL MOTOR CO LTD
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[0003] The concentration standard of urea solution for vehicles in the industry is 32.5% (mass ratio). If the concentration of urea solution is high and the water content is low, the NOx emission of the vehicle will exceed the standard, causing irreversible and serious damage to the SCR system, and even damage to the SCR system hardware. ;If the concentration of urea solution is too low, the urea pump, urea nozzle and other post-processing components of the SCR system will be severely damaged, and even sedimentation and fouling will cause blockage
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[0041] The specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure, but not to limit the present disclosure.
[0042] In the present disclosure, unless stated to the contrary, directional words such as "inner" and "outer" are generally used with respect to the contours of the corresponding parts. Furthermore, the terms "first", "second", etc., are used in the present disclosure to distinguish one element from another and have no order or importance. Where the following description refers to the drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated.
[0043] refer to figure 1 and figure 2 The present disclosure provides a urea quality detection device, the urea quality detection device includes a concentration det...
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Abstract
The invention relates to a urea quality detection device which comprises a concentration detection part arranged in a urea box and used for detecting urea concentration, the concentration detection part comprises a light source used for emitting detection light with at least a first wavelength, and the first wavelength is the wavelength of light which can be absorbed by urea liquid; the light source is accommodated in the packaging shell, and the packaging shell is provided with a light-transmitting wall for the detection light to transmit; the detector and the packaging shell are arranged in a spaced mode, the detector is used for receiving the detection light which is transmitted from the light transmitting wall and absorbed by the urea liquid, and the detector comprises an optical filter only allowing light rays with the first wavelength to penetrate through and a photoelectric conversion part arranged on the side, away from the light source, of the optical filter; and a controller for controlling the light source and acquiring an electrical signal of the photoelectric conversion unit. According to the urea quality detection device, a user can accurately judge whether urea liquid meets the use standard or not, damage to SCR system components is avoided, stable operation of an SCR system is guaranteed, and the urea quality detection device is simple in structure and convenient to produce and manufacture.
Description
technical field [0001] The present disclosure relates to the technical field of vehicle urea quality detection, in particular to a urea quality detection device. Background technique [0002] With the upgrading of automobile emission regulations, vehicles now usually use SCR (Selective Catalytic Reduction, selective catalytic reduction technology), using ammonia gas as a gas reducing agent, when the exhaust pipe of diesel vehicles reaches certain conditions, activate the SCR system to exhaust The vehicle urea liquid is sprayed into the pipe to reduce the nitrogen oxides in the exhaust gas to nitrogen and water, which can not only meet the purpose of cleaning the exhaust gas, but also save energy, safety and cost. [0003] The concentration standard of urea solution for vehicles in the industry is 32.5% (mass ratio). If the concentration of urea solution is high and the water content is low, the NOx emission of the vehicle will exceed the standard, causing irreversible and se...
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IPC IPC(8): G01N21/01G01N21/31
CPCG01N21/01G01N21/3103
Inventor 赵振兴
Owner GREAT WALL MOTOR CO LTD