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Urea box urea temperature and urea concentration data processing strategy

A technology of data processing strategy and urea concentration, applied in the direction of exhaust gas treatment, electronic control of exhaust gas treatment device, diagnosis device of exhaust gas treatment device, etc., can solve the problems of vehicle torque limit, speed limit, etc. The effect of jumping and stable urea concentration

Pending Publication Date: 2021-07-27
ANHUI ACT BLUE ENVIRONMENTAL PROTECTION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a urea tank urea temperature and urea concentration data processing strategy to solve the problem that the existing urea tank urea temperature and urea concentration data processing strategy will cause the vehicle to be limited in torque or speed

Method used

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  • Urea box urea temperature and urea concentration data processing strategy

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Effect test

Embodiment 1

[0017] Such as Figure 1-2 As shown, a urea tank urea temperature and urea concentration data processing strategy includes the following steps:

[0018] (1) Use the filtering algorithm to calculate the temperature measurement value collected by the urea temperature sensor in the urea tank to obtain the filtered temperature;

[0019] (2) When the filtered temperature reaches -7 o At C, the urea quality sensor sends the calculated urea concentration to the CAN bus.

[0020] In the step (1), the urea quality sensor sends the filtered temperature as the real value of the temperature in the urea tank to the CAN bus.

[0021] When the measured value of the temperature collected by the urea temperature sensor reaches -7 o At C, the urea temperature sensor continuously collects several temperature measurements at equal time intervals, and calculates the difference between the maximum and minimum values ​​of these temperature measurements. When the difference is less than the set th...

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Abstract

The invention discloses a urea box urea temperature and urea concentration data processing strategy, and relates to the technical field of diesel engine urea detection. The strategy comprises the following steps: employing a filtering algorithm to calculate a temperature measurement value collected by a urea temperature sensor in a urea box, and obtaining a filtered temperature; and when the filtered temperature reaches-7 DEG C, sending the calculated urea concentration to a can bus by a urea quality sensor. According to the urea box urea temperature and urea concentration data processing strategy provided by the invention, the problem that the torque or speed of a vehicle is limited due to an existing urea box urea temperature and urea concentration data processing strategy can be solved.

Description

technical field [0001] The invention relates to the technical field of diesel engine urea detection, in particular to a data processing strategy for urea temperature and urea concentration in a urea tank. Background technique [0002] An electrically connected urea temperature sensor and a urea quality sensor are arranged in the urea tank, and the urea temperature sensor and the urea quality sensor are used to measure the urea temperature and urea concentration respectively. There is only one urea temperature sensor, which can only measure the urea temperature at its location in the urea tank, but cannot measure the average temperature of urea in the urea tank, so the measured value is not the real value. An ultrasonic probe is installed on the urea quality sensor, and the ultrasonic probe emits ultrasonic waves toward the reflective plate installed in the urea tank. Since the ultrasonic wave has different speeds in urea solutions with different concentrations, the urea qual...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N11/00F01N3/20
CPCF01N11/00F01N3/2066F01N2900/1811F01N2900/1818F01N2900/0404F01N2900/0418F01N2610/02Y02T10/40Y02A50/20
Inventor 刘屹徐金帅胡光东秦亮朱庆
Owner ANHUI ACT BLUE ENVIRONMENTAL PROTECTION CO LTD
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