What is ignition time delay relay?
An ignition time delay relay is a device used in automotive electrical systems to control the timing of the ignition system. It is typically used in diesel engines to ensure that the glow plugs have sufficient time to heat up before the engine is started. The relay is connected to the glow plug circuit and is activated by the ignition switch. When the ignition switch is turned on, the relay provides power to the glow plugs for a predetermined period of time, typically around 10 seconds. After this time, the relay opens and the glow plugs are turned off. This ensures that the glow plugs are only heated for the necessary amount of time, preventing them from overheating and damaging the engine. Ignition time delay relays are also used in some gasoline engines to control the timing of the spark plugs.