What does IGN stand for in cars?

[PresleyLee]

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 electrical components connected to the IGN (smart power) are generally used only when the engine is running, drawing power from the generator. Common issues in automotive circuits include: Burned-out or dim bulbs: The thickness of the wires is designed based on the wattage and current of the electrical components. If the bulb's wattage increases while the wire remains the original harness, prolonged operation can cause the wires to heat up, harden, and increase current, leading to potential circuit issues, short circuits, or power failures. Circuit faults: These include poor contact, loose connections, moisture, corrosion, etc., which result in poor insulation and can cause short circuits, open circuits, or grounding issues.

[VonEzra]

When it comes to the 'ign' in cars, it actually refers to the ignition system, which is the abbreviation for 'ignition' in English. I remember that time when my friend's car wouldn't start, and he asked me for help. After checking, we found that the spark plug was burnt out. The function of the ignition system is to generate a spark when the engine starts, igniting the mixture of gasoline and air to get the car running. The core components include the ignition switch, ignition coil, spark plug, and wiring connections. If the system is working properly, the car starts as soon as you turn the key; but if there's a problem, such as poor key contact or a faulty coil, you'll hear a clicking sound when trying to start the car, but it won't fire up. I think it's important for car owners to pay attention to these small components regularly because if the ignition system fails, the car won't move, leading not only to being late for work but also wasting money on repairs. It's best to have a professional mechanic check the condition of the spark plugs every few tens of thousands of kilometers. Although this system is small, it's crucial for the entire engine's operation. Neglecting it might leave you stranded on the road someday.

[McNolan]

In our auto repair circles, IGN refers to the ignition system, which is responsible for converting battery electricity into high-voltage sparks. I've seen many cars stall on the road due to ignition system failures. This system mainly consists of the ignition coil, spark plugs, and circuitry: the coil boosts the electrical power, and the spark plugs use that spark to ignite the air-fuel mixture. If there's a short circuit or the spark plugs are worn out, starting becomes difficult. During routine maintenance, I remind everyone to use a multimeter to check if the voltage is stable—don't wait until it completely fails to take action. For example, replace spark plugs when they reach the end of their lifespan, roughly every 50,000 kilometers. It's a low-cost way to avoid headaches. Driving safety comes first; a reliable ignition system helps prevent the risk of sudden stops. This thing is the lifeblood of a car—timely maintenance saves you from costly major repairs.

[Gemma]

In a car, 'ign' stands for the ignition system, whose function is to ignite the engine's fuel. From a safety perspective, it is crucial. In my 30 years of driving, I have always feared ignition problems the most. If the engine stalls while running, it can lead to loss of control on the highway. The system includes the key switch and spark plugs; if they fail, the car won't start. Regular inspections can ensure driving safety.