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High-effective oxygen sensor detection system based on LabVIEW

An oxygen sensor and detection system technology, applied in instruments, measuring devices, scientific instruments, etc., can solve the problems of unstable idling, increased fuel consumption, increased engine emissions, etc., to achieve semi-automation, reduce manual intervention, and fast automatic detection. Effect

Inactive Publication Date: 2016-04-20
祁艳
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Problems solved by technology

The oxygen sensor is a key part of controlling emissions. Once a fault occurs, the electronic control unit (ECU) will not be able to obtain the oxygen concentration information in the exhaust gas in real time, so it will not be able to perform feedback control on the air-fuel ratio dispersion difference, which may cause engine emissions Substantial increase, increased fuel consumption, unstable idle speed

Method used

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  • High-effective oxygen sensor detection system based on LabVIEW
  • High-effective oxygen sensor detection system based on LabVIEW

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Embodiment Construction

[0014] Such as figure 1 As shown, it is a device composition diagram of a high-efficiency oxygen sensor detection system based on LabVIEW in the present invention. The figure includes the FAI EFI engine unit, the ECU module with the measurement timing set, the exhaust gas measurement section, the sensor clamping operating mechanism, the computer, and the AD sampling processing unit MECU; the ECU and the FAI EFI engine set with the measurement timing set connected with each other, the output of the FAI EFI engine unit is connected back to the ECU module that has set the measurement sequence, and the FAI EFI engine unit is connected to the exhaust measurement section, and at the same time connected to the clamping operating mechanism; the output of the exhaust measurement section It is connected to the AD sampling processing unit MECU, and the output of the AD sampling processing unit MECU is directly connected to the computer, and the hormone and output signals are then connect...

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Abstract

A high-effective oxygen sensor detection system based on LabVIEW can be used for detecting various performance indices of an oxygen sensor accurately and quickly, such as ignition activation time, lean-rich signal intensity, lean-rich response speed and the like. The detection system comprises an FAI electronic fuel injection engine set, an ECU module with measurement time set, an exhaust measurement section, a sensor clamp-mounting operation mechanism, a computer and an AD sample processing unit MECU. The ECU module with measurement time set is connected to the FAI electronic fuel injection engine set. The output of the FAI electronic fuel injection engine set is fed back and then is connected to the ECU module with measurement time set. The FAI electronic fuel injection engine set is connected to the exhaust measurement section and meanwhile is connected to the sensor clamp-mounting operation mechanism. The output of the exhaust measurement section is connected to the AD sample processing unit MECU. The output of the AD sample processing unit MECU is directly connected to the computer. A signal outputted from the computer is connected to the ECU module with measurement time set.

Description

technical field [0001] The invention belongs to the field of engine electric injection systems, in particular to a high-efficiency oxygen sensor detection system based on LabVIEW. Background technique [0002] With the increasingly stringent emission regulations, engines tend to use closed-loop control electronic injection systems to eliminate manufacturing dispersion and durability changes in product air-fuel ratio control. The oxygen sensor is a key part of controlling emissions. Once a fault occurs, the electronic control unit (ECU) will not be able to obtain the oxygen concentration information in the exhaust gas in real time, so it will not be able to perform feedback control on the air-fuel ratio dispersion difference, which may cause engine emissions Substantial increase, increased fuel consumption, unstable idle speed. Therefore, it is necessary to strictly and accurately test and judge the performance parameters of the produced oxygen sensor when it is offline. C...

Claims

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Application Information

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IPC IPC(8): G01N33/00
Inventor 祁艳
Owner 祁艳
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