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3.3.2 Disel Glow Plugs
When the engine or the weather is relatively cold, it will affect the combustion of diesel fuel, so the glow plug is
required to heat the cylinder before starting. Diesel engine glow plugs generally have one for each cylinder,
connected in series, powered by a battery, and controlled by a relay to open and close.
When the ambient temperature is low or the engine temperature is relatively low, when starting the vehicle, the
glow plug will be turned on first, and after the preheating light goes out, the vehicle can be started to make the
engine idling.
Use a current clamp, connect one end to channel 1 of the oscilloscope, and clamp the other end to the power cord of
the glow plug. Pay attention to the direction of the current.
ATO oscilloscope can be used to test the diesel engine glow plug (according to the type of glow plug, there are two
types: glow plug and single glow plug).
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