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Glue immersion technological method for breaking capillarity of engine wiring harness

A technology of capillary phenomenon and process method, which is applied in the direction of engine components, machines/engines, mechanical equipment, etc., can solve the problems of polluting the ECU electrical interface, the decline of the electrical performance of the electrical interface, and affecting the normal operation of the engine, so as to achieve simple production process and high effect obvious effect

Active Publication Date: 2011-02-09
湖北正奥比克希汽车电气系统有限公司
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AI Technical Summary

Problems solved by technology

[0002] In the existing EFI diesel automobile engine wiring harness, the wiring part connected to the fuel injector is installed in the rocker chamber. Because the copper core part of the wire is composed of many thin copper wires, there is a gap between the copper wires, which makes the engine The lubricating oil in the rocker chamber penetrates into the engine electronic control ECU through the gap through the capillary phenomenon, thereby polluting the ECU electrical interface, causing the electrical performance of the ECU electrical interface to decline, and affecting the normal operation of the engine

Method used

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  • Glue immersion technological method for breaking capillarity of engine wiring harness
  • Glue immersion technological method for breaking capillarity of engine wiring harness
  • Glue immersion technological method for breaking capillarity of engine wiring harness

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Embodiment Construction

[0011] Such as figure 2 As shown, one end of the engine wiring harness 6 is connected to the ECU 8 and the other end is connected to the rocker arm chamber 7 .

[0012] Such as figure 1 , 2 As shown in the engine wiring harness 6, the wires are interrupted at A, welded by a copper wire ultrasonic welding machine, dipped in glue, and then covered with an oil-resistant glue-containing heat shrinkable tube for insulation and sealing treatment. Specifically: interrupt the part of the wire harness connected to the fuel injector in the automobile engine wire harness, use T3 wire 5 for the section connected to the ECU, and use T6 wire 1 for the other section, and then disconnect the copper cores 3 and 4 of the interrupted parts in sequence Staggered, using an ultrasonic wire welding machine to weld the copper cores 3 and 4 of the wires together; soak the anaerobic adhesive in the welding part, use the capillary phenomenon generated by the gaps in the copper cores of the wires to s...

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Abstract

The invention provides a glue immersion technological method for breaking capillarity of an engine wiring harness, aiming at solving the problem that the oil is seeped in an ECU due to the capillarityof the diesel engine wiring harness. The technical proposal is as follows: the harness lead connected with an injector wiring in an automobile engine wiring harness is broken; subsequently the lead copper cores at the broken position are staggered sequentially and welded together by an ultrasonic wire welder; an anaerobic adhesive is dipped at the welding position; the anaerobic adhesive is sucked inside the lead copper cores by the capillarity generated by the apertures in the lead copper cores; subsequently the welding position is sheathed by an oil-resistance composite dual-layer thermal contracting pipe to carry out sealing insulation; the anaerobic adhesive sucked in the lead wire cores is solidified under a condition of meeting metal ions and having no oxygen; and the solidified anaerobic adhesive fills in and blocks the clearances in the lead copper cores.

Description

technical field [0001] The invention relates to an automobile engine wiring harness, in particular to a dipping process method for blocking the capillary phenomenon of the engine wiring harness. Background technique [0002] In the existing EFI diesel automobile engine wiring harness, the wiring part connected to the fuel injector is installed in the rocker chamber. Because the copper core part of the wire is composed of many thin copper wires, there is a gap between the copper wires, which makes the engine The lubricating oil in the rocker chamber penetrates into the engine electronic control ECU through the gap through the capillary phenomenon, thereby polluting the ECU electrical interface, causing the electrical performance of the ECU electrical interface to decline, and affecting the normal operation of the engine. Contents of the invention [0003] In order to eliminate the problem of oil leakage to the ECU caused by the capillary phenomenon of the diesel engine wiri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01R4/72H01R4/02F02M51/06
Inventor 孟祥林戚春敏
Owner 湖北正奥比克希汽车电气系统有限公司
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