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Vehicle-mounted urea solution index measuring system

A technology of index measurement and solution, applied in exhaust gas treatment, mechanical equipment, engine components, etc., to ensure the effect of detection accuracy

Pending Publication Date: 2021-12-28
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above, the present invention aims to provide a vehicle-mounted urea solution index measurement system to solve the deficiencies in the existing urea solution detection level and concentration detection

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  • Vehicle-mounted urea solution index measuring system
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Embodiment Construction

[0024] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0025] The present invention proposes an embodiment of a vehicle-mounted urea solution index measurement system, specifically, as figure 1 As shown, it mainly includes: a urea tank 1 , an ultrasonic transducer group 10 , an ultrasonic drive chip 4 , a microcontroller 5 and an OR logic gate 6 . Wherein, the ultrasonic transducer group 10 is arranged in the urea tank 1 (it should be pointed out that the two ultrasonic transducer groups 10 marked in the figure are for schematically indicating that they can be transmitted in diffe...

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Abstract

The invention discloses a vehicle-mounted urea solution index measuring system which has a main design conception that two paths of ultrasonic devices are adopted to detect a liquid level and a concentration of a urea solution, the liquid level and the concentration can be continuously measured, and a fluctuation of the urea solution does not influence an ultrasonic propagation time, so that the detection precision is ensured. Specifically, by designing a connection architecture and measurement logic of an ultrasonic driving chip, a microcontroller and two transducers, the ultrasonic driving chip is utilized to send signals to the microcontroller at the moment of measurement starting and measurement stopping, and the microcontroller calculates an ultrasonic wave velocity through a time difference, so that the liquid level and the concentration of the solution are detected.

Description

technical field [0001] The invention relates to the technical field of vehicle emission treatment, in particular to a vehicle-mounted urea solution index measurement system. Background technique [0002] The content of nitrogen oxides in vehicle emissions is in accordance with the requirements of relevant regulations. For vehicles with diesel systems, urea solution is required to reduce the nitrogen oxides in the exhaust gas. Also make a request. [0003] The existing liquid level sensing adopts the reed switch circuit, that is, the combination of the reed switch and the resistor is used to sense the liquid level. As the liquid level changes, the corresponding reed switch is connected to the circuit to realize different The liquid level corresponds to different resistance values, which in turn reflect the liquid level. However, the on-off of the dry reed switch and the resistor cannot continuously sense the urea liquid level, but can only sense the liquid level in sections...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N11/00
CPCF01N11/00F01N2550/02Y02T10/40
Inventor 王家华董善燕赵欣亮张中刚余仕侠
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD