What does IGN mean in cars?
2 Answers
In automotive circuit diagrams, the IGN power supply refers to the power supply system controlled by the ignition switch, which means the power line that supplies electricity only after the engine is ignited. The vehicle's electrical system is basically composed of three parts: constant power (30 power), IGN (smart power), and ACC power supply. The IGN (smart power) part of the electrical components is basically used when the engine is running, drawing power from the generator. Common issues in automotive circuits are as follows: 1. Bulb burnout or insufficient brightness: The thickness of the wires is designed based on the wattage and current of the electrical appliances. If the bulb's wattage increases while the wire remains the original harness, prolonged operation will cause the wire to heat up, harden, and increase current, easily leading to line faults, short circuits, and power accidents. 2. Circuit faults: Including poor contact, loose connections, moisture, corrosion, etc., leading to poor insulation, which can cause short circuits, open circuits, and grounding bypasses. 3. Component breakdown: Generally, electronic components are very sensitive to overcurrent, voltage, and temperature. For example, the PN junction of transistors is extremely prone to overvoltage breakdown, and electrolytic capacitors increase leakage at high temperatures. Thyristor components are sensitive to overcurrent. Breakdown caused by overvoltage, overcurrent, or overheating can be divided into open circuits, short circuits, etc. Circuit faults causing overvoltage or overcurrent breakdown are irreversible. 4. Component aging and performance degradation: Aging electrical and electronic components in the automotive circuit system lead to reduced ignition efficiency, unresponsive throttle, insufficient power, and increased fuel consumption.
I've been driving for many years and have some knowledge about automotive ignition systems. Simply put, the car ignition system refers to the set of devices that start the engine, commonly abbreviated as IGN in English. For example, when you turn the key to the ignition position, you're triggering it. Its core function is to generate high-voltage electrical sparks to ignite the gasoline-air mixture in the engine cylinders, allowing the engine to run. If there's an issue with the ignition, the car may fail to start. Common causes include aging ignition coils, carbon buildup on spark plugs, or insufficient battery power. For regular maintenance, I recommend checking the spark plugs every two years to ensure they're functioning properly. If you experience difficulty starting the car, have it checked at a repair shop without delay. The ignition system is crucial for driving safety; if it fails and causes the engine to stall while driving, it can easily lead to accidents. Therefore, regular maintenance can save a lot of hassle.
