What is the ignition method of a gasoline engine?

[VonEverly]

Gasoline engines use spark plugs to ignite the air-fuel mixture. Below is an introduction to gasoline engines: 1. Introduction: A gasoline engine is an internal combustion engine that converts internal energy into kinetic energy using gasoline as fuel. Due to gasoline's low viscosity and rapid evaporation, a fuel injection system can spray gasoline into the cylinder. After compression reaches a certain temperature and pressure, the spark plug ignites the mixture, causing the gas to expand and perform work. 2. Principle: By burning fuel inside the cylinder, kinetic energy is generated, driving the piston in the engine cylinder to move back and forth. This motion drives the connecting rod attached to the piston and the crankshaft connected to the rod, creating a reciprocating circular motion around the crankshaft center, thereby outputting power.

[LaRebecca]

I've been running an auto repair shop for nearly twenty years, and gasoline engine ignition is the most fundamental yet critical aspect. It relies on spark plugs to discharge and ignite. When the air-fuel mixture in the cylinder is compressed to the top, the spark plug fires with a 'snap,' much like a lighter, to ignite the fuel. The entire system consists of an ignition coil, control module, and spark plugs. When you turn the key, the battery supplies power, and the control module calculates the optimal ignition timing to boost the coil's voltage to tens of thousands of volts. If the ignition timing is off, the car will jerk and shake, and fuel consumption will skyrocket. Spark plug carbon buildup or coil aging are common failure points. Remember to check the spark plug gap every 40,000 kilometers, and for older models, pay attention to distributor cap leakage issues.

[LukeMarie]

My old Jeep has clocked over 300,000 kilometers, and I know the gasoline engine ignition principle inside out. Simply put, it's about spark plug ignition, with the engine control computer precisely timing the spark based on RPM and load. Modern vehicles have replaced old-fashioned distributors with electronic ignition control for faster response and lower failure rates. Spark plug selection matters too - iridium ones can last 100,000 km while standard copper-core plugs need replacement at 30,000 km. Once it wouldn't start in rainy weather due to ignition coil moisture leakage causing electrical tracking. Regular maintenance should include cleaning spark plug electrode deposits - poor fuel quality often causes ignition delay. Crisp engine sound without misfiring noises indicates proper ignition.

[DiLily]

When modifying racing cars, special attention is paid to the ignition system. Gasoline engines must rely on spark plugs for forced ignition because gasoline has a high ignition point, unlike diesel engines which can use compression ignition. Modern direct injection engines form a rich air-fuel mixture around the spark plug to ensure successful ignition, and some performance cars even use a dual-spark-plug design. The ignition timing is precise to one-thousandth of a second. Advancing the ignition can increase torque but may cause knocking. Professional racing tuning often uses an ignition timing light for testing. For regular car owners, replacing spark plugs with NGK or Bosch products yields the most stable results. Note that oxidized coil connectors can affect discharge intensity, and older vehicles should have their wiring insulation checked.