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Detection device for testing EGR valve sensor cover plate

A detection device, EGR valve technology, applied in the direction of measuring device, instrument, measuring electricity, etc., can solve the problems of increasing production cost and affecting production efficiency, and achieve the effect of improving production efficiency, ensuring qualified rate and reducing production cost

Inactive Publication Date: 2018-04-13
WUXI LONGSHENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no equipment to detect the circuit in the sensor cover plate during the production process of the EGR valve. It can only be judged after the EGR valve is assembled and tested. When a short circuit occurs, it can only be scrapped, which affects the production efficiency. increased production costs

Method used

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  • Detection device for testing EGR valve sensor cover plate
  • Detection device for testing EGR valve sensor cover plate

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Experimental program
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Embodiment Construction

[0014] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0015] A detection device for testing the EGR valve sensor cover plate, its structure is as follows figure 1 As shown, it includes a detection mechanism and a plug 2. The detection mechanism is connected to the plug through a wire harness 3, and the wire harness includes a test line connected to five wires in the sensor cover. The plug 2 is docked with the sensor cover 1, and the detection mechanism is used to test and display the short circuit state of the sensor cover, so that the operator can quickly judge whether there is a short circuit on the EGR valve sensor cover.

[0016] The detection mechanism includes a base 4 on which a disc 5 with a knob 6 and an alarm mechanism for issuing a short circuit alarm are arranged. There are 20 contacts on the disk, and the 20 contacts correspond to the combination of five wires in the sensor...

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PUM

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Abstract

The present invention discloses a detection device for testing an EGR valve sensor cover plate. The detection device comprises a plug butted joint with a sensor cover plate and a detection mechanism configured to test and display a short-circuit state of the sensor cover plate; the detection mechanism is connected with the plug through a wire harness; and the wire harness comprises a test wire connected with five wires in the sensor cover plate. The detection device for testing an EGR valve sensor cover plate is used to detect a line condition prior to production process of the EGR valve sensor cover plate so as to solve the problem that a short-circuit condition cannot be accurately tested after inserts in the EGR valve sensor cover plate are subjected to injection, the qualified rate ofan EGR valve is ensured, the production efficiency of the EGR valve is improved, and the production cost of the EGR valve is reduced.

Description

technical field [0001] The invention relates to the technical field of EGR valve detection, in particular to a device for detecting a cover plate of an injection molded part of an EGR valve sensor. Background technique [0002] In the engine exhaust gas recirculation (EGR) system, the ECU calculates the opening required by the current EGR system according to the engine speed, fuel quantity and other signals, and uses the calculated signal to control the opening of the EGR valve, thereby adjusting the flow of exhaust gas. Exhaust gas and fresh air are mixed in a certain proportion and then returned to the cylinder for recirculation to reduce the combustion temperature and combustion speed in the cylinder, thereby further reducing NOX emissions. [0003] The EGR valve sensor cover plate is a plastic plate that seals the EGR valve motor, transmission mechanism and transmission gear in the EGR valve body. One end of the plastic plate is a plug with 5 pins connected to the engine...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/02
CPCG01R31/50
Inventor 于政
Owner WUXI LONGSHENG TECH