Ignition cable shield

Abstract

The invention provides an ignition cable shield which comprises a cable shielding layer composed of an outer layer, a middle layer and an inner layer in a combined mode. The cable shielding layer is composed of a stainless steel mesh sleeve (1), a corrugated metal belt (2), an insulating bush (3) and an anti-wave copper sleeve (4). According to the ignition cable shield, the cable shielding layer is excellent in quality and low in electromagnetic leakage; the outer cable protection layer is high in insulation strength, low in transmission loss, high in severe environment adaptability, capable of shielding stray radiation of ignition energy and also capable of effectively avoiding and preventing electromagnetic interference on other weak current equipment and electronic equipment on site; the defect that a traditional shielding mesh sleeve has a lot of electromagnetic leakage points is overcome, or the defects that the electromagnetic compatibility of a mesh sleeve plus a hose does not meet standards, the weight exceeds the standards and the bending performance is poor are overcome.

Description

technical field [0001] The invention relates to an electromagnetic shielding ignition cable mainly used for transmitting electric energy of an engine and protecting internal wires, especially a high-temperature-resistant high-energy (single transmission energy greater than 16 joules) ignition multi-layer metal shielding cable. Background technique [0002] In the high-energy ignition system consisting of high-energy ignition device, high-energy ignition cable, and high-energy semiconductor electric nozzle (ignition gun), the ignition cable is the main shielding device for the energy transmission components of the ignition system. With the rapid development of aircraft and the increasingly high requirements for electromagnetic compatibility of the system, the ignition system generally adopts electronic ignition and electric starting. Electromagnetic interference is one of the main factors affecting the normal operation of the ignition system circuit and other surrounding syste...

AI Technical Summary

Problems solved by technology

Due to the complex electromagnetic environment on site, there is serious crosstalk between braided cables

The technical shortcomings of the engine ignition cable used in the prior art: ①The electromagnetic shielding performance cannot meet the requirements of relevant regulations such as the engine catalytic ignition fuel controller timer specification GJB; ②The weight of the multilayer metal shield of the ignition cable exceeds the specified requirements; ③The ignition cable Poor workmanship (mainly manifested in bending)

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