To facilitate starting from a cold state, diesel models are equipped with a preheating system consisting of four glow plugs, a control unit installed in the instrument panel of a warning lamp.
Glow plugs are miniature heating elements in a metal case that are connected to the electrical network. Each glow plug is screwed into the cylinder head and the tip of the spark plug is placed in a swirl chamber. When the spark plug heats up, the air in the cylinder heats up, thereby reaching the combustion temperature faster.
The duration of the warm-up period is controlled by the system, which receives information about the engine temperature from the coolant temperature sensor and, based on this information, adjusts the warm-up time.
The control lamp installed in the dashboard informs the driver that the heating is on. The lamp goes out after the temperature in the vortex chamber reaches a level sufficient to start the engine. When the engine is warm or the ambient temperature is above 8°C, the lamp will only illuminate for approximately one second, after which the engine can be started.
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