A glow plug is installed in each vortex chamber. Glow plugs are used when starting a cold engine. The voltage supply to the glow plugs is controlled by a timing relay from a signal from the engine ECU.
The control lamp in a combination of devices burns at work of glow plugs. After turning off the lamp, the engine can be started. Voltage is supplied to the glow plugs within a few seconds after the control lamp is turned on. If no attempt is made to start the engine after the lamp has been turned off, the timer cuts off power to the glow plugs to avoid battery drain and overheating of the glow plugs.
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