Material and Function Description of Automobile Wiring Harness
- PRODUCT DETAIL
The material requirements for automotive wiring harnesses are also very strict:
Automotive wiring harnesses, including their electrical properties, material emission, temperature resistance, etc., are all more demanding than general wiring harnesses. Especially when it comes to safety, the requirements are more stringent.
1. The ambient temperature around the engine is high and there are more corrosive gases and liquids. Therefore, the wires of the engine harness must use high temperature, oil, vibration, and friction resistant wires.
2. The wire on the automatic transmission uses hydraulic oil resistant, high temperature resistant and temperature stable wire.
3. The wires of the wire harness on the luggage compartment cover must maintain their elasticity at low temperatures, so cold elastic wires should be used to ensure their normal operation.
4. Weak signal sensors should use shielded wires.
5. The ABS wiring harness assembly uses twisted wires that are resistant to high temperatures of 150-200°C, and have a hard and wear-resistant outer protective insulating layer, but the core is greater than 133.
6. Power line: For example, the wires used in the starter alternator output line and battery line are special wires that can withstand large currents and have good heat dissipation performance and low voltage.
The cross-sectional area of wires used in motors and actuators is 0.85 and 1.25mm2, while the cross-sectional areas of wires used in power circuits are 2, 3, and 5mm2; The special circuits (starter, alternator, engine grounding wire, etc.) have different specifications of 8, 10, 15, 20mm2.
In addition to considering the electrical performance, the selection of wires is also restricted by the physical performance of the vehicle. For example, the frequently opened/closed door of a taxi and the wires that cross the body should be made of wires with good flexibility.
In recent years, electromagnetic shielding wires used in weak signal circuits have also been increasing.
With the increase of automobile functions and the widespread application of electronic control technology, the number of circuits and power consumption on automobiles has increased significantly, and the wiring harness has become thicker and heavier. How to make a large number of wiring harnesses more effectively and rationally arranged in a limited automobile space so that the automobile wiring harness can exert greater functions has become a problem facing the automobile manufacturing industry.
Automotive wiring harnesses, including their electrical properties, material emission, temperature resistance, etc., are all more demanding than general wiring harnesses. Especially when it comes to safety, the requirements are more stringent.
1. The ambient temperature around the engine is high and there are more corrosive gases and liquids. Therefore, the wires of the engine harness must use high temperature, oil, vibration, and friction resistant wires.
2. The wire on the automatic transmission uses hydraulic oil resistant, high temperature resistant and temperature stable wire.
3. The wires of the wire harness on the luggage compartment cover must maintain their elasticity at low temperatures, so cold elastic wires should be used to ensure their normal operation.
4. Weak signal sensors should use shielded wires.
5. The ABS wiring harness assembly uses twisted wires that are resistant to high temperatures of 150-200°C, and have a hard and wear-resistant outer protective insulating layer, but the core is greater than 133.
6. Power line: For example, the wires used in the starter alternator output line and battery line are special wires that can withstand large currents and have good heat dissipation performance and low voltage.
Functional classification of automotive wiring harness
In modern cars, the electronic control system is closely related to the wiring harness. Someone once made an image metaphor: The microcomputer is equivalent to the human brain; The sensor is equivalent to the sense organ; The actuator is equivalent to a moving device; Then the wire bundles are nerves and blood vessels.
Automotive wiring harnesses are classified in terms of function: It is used to carry the power line that drives the actuator (actuator). And the signal line that transmits the sensor input command. Power lines are thick wires that carry large currents, while signal lines are thin wires that do not carry electricity (optical fiber communication).
Automotive wiring harnesses are classified in terms of function: It is used to carry the power line that drives the actuator (actuator). And the signal line that transmits the sensor input command. Power lines are thick wires that carry large currents, while signal lines are thin wires that do not carry electricity (optical fiber communication).
The cross-sectional area of wires used in motors and actuators is 0.85 and 1.25mm2, while the cross-sectional areas of wires used in power circuits are 2, 3, and 5mm2; The special circuits (starter, alternator, engine grounding wire, etc.) have different specifications of 8, 10, 15, 20mm2.
In addition to considering the electrical performance, the selection of wires is also restricted by the physical performance of the vehicle. For example, the frequently opened/closed door of a taxi and the wires that cross the body should be made of wires with good flexibility.
In recent years, electromagnetic shielding wires used in weak signal circuits have also been increasing.
With the increase of automobile functions and the widespread application of electronic control technology, the number of circuits and power consumption on automobiles has increased significantly, and the wiring harness has become thicker and heavier. How to make a large number of wiring harnesses more effectively and rationally arranged in a limited automobile space so that the automobile wiring harness can exert greater functions has become a problem facing the automobile manufacturing industry.
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