What does the ignition switch NO mean?

[VonAaliyah]

ON is the ignition position, where the engine can operate normally and the starter stops. Generally, when starting the car, you need to turn to the start position to start the engine, and after starting, releasing the key automatically returns it to the ignition position. START is the start position, where the starter is connected via the circuit to start the engine. Relevant information about spark plugs is as follows: 1. Introduction: The spark plug is a crucial component of the gasoline engine's ignition system. It introduces high voltage into the combustion chamber and generates a spark by jumping the electrode gap, thereby igniting the combustible mixture in the cylinder. It mainly consists of a terminal nut, insulator, terminal stud, center electrode, side electrode, and shell, with the side electrode welded to the shell. 2. Working Principle: Under high voltage, the air between the spark plug's center electrode and side electrode rapidly ionizes, forming positively charged ions and negatively charged free electrons. When the voltage between the electrodes reaches a certain level, the number of ions and electrons in the gas increases like an avalanche, causing the air to lose its insulating properties.