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What are glow plugs really used for in a diesel engine?

Model: (Various brands) Various
Part: Glow plugs

Let's debunk a myth: glow plugs on modern diesel engines are not really necessary for ignition, or at least not specifically just for that, but are more anti-pollution systems, to increase combustion temperatures; For ignition, compression ratios are so high that glow plugs are not really needed. In fact, there are many commercial vehicles that no longer even have them. Glow plugs are instead used to ignite the combustion of the anti-pollution system of the Particulate Filter; and for this reason, they can often cause many issues.

Posted on 10 March 2025 by ScegliAuto

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