For the currently used engine wiring harness, the line protection design mainly guides the rational selection of lines, the application of protective materials on the line, and the selection of fuses connected in series on the line.
The selection of the wire type is based on the standard of the vehicle application market. At present, most of the engine wiring harnesses are German standard wire harnesses. The type is FLR9Y-B single-core unshielded thin-walled polypropylene insulated low-voltage wire. Bare copper wire, insulation is made of halogen-free flame retardant material, which has excellent oil resistance and reliability.
The selection of the cross-sectional area of the wire After determining the type of wire, the cross-sectional area of the wire should be determined according to factors such as wire voltage drop, load power, and wire heating.