Glow plug how does it work




















The glow plugs heat the fuel in order for the engine to start. To start the engine, the intake air is compressed and, as the piston rises, the engine injects diesel into the combustion chamber. The injected fuel combines with the air, evaporates and ignites.

The glow plugs remain heated for a few minutes after the engine has been started to maintain the combustion process. Read our blog post on how glow plugs are manufactured here. With thousands of glow plugs available to choose from, it can be an overwhelming task to find the replacements for your car. But by entering your number plate into our car lookup tool, you can find the best glow plugs for your vehicle within seconds. With one of the widest high-quality glow plug ranges on the market, DIY Car Service Parts stocks plugs from the top recommended manufacturers, providing glow plugs for every make and model.

All DIY car service parts are manufactured by trusted, high-quality brands. Here are just a few of the brands that we stock. Where To Buy. About US. Select Language. Message Regarding Your Privacy. I accept Submit Submit. What is a glow plug? Phase 1: pre-heating when the ignition starts. Phase 2: Heating during starting to ensure optimal combustion of your fuel. Phase 3: Post-heating. BERU glow plugs continue to be heated for approximately 3 minutes after the engine has been started.

This extended glow plug operating time helps to complete the combustion process and to decrease noise output as the combustion chambers heat up. Reliable power start after start — Beru glow plugs are manufactured by BorgWarner, who also produces glow plugs that meet original equipment OE manufacturer standards, so you can be certain of high-quality parts that you can rely on.

Glow plug systems The starting process of an engine heavily influences the exhaust gas values of a vehicle. Types of glow plugs BERU offers a range of innovative glow plugs, each with specific features for a variety of applications.

Pressure Sensor Glow Plugs PSG The sensor and electronics in the pin of the PSG optimise performance of the glow plug, significantly reducing particle emissions in order to meet and exceed current exhaust gas limit values. High-tech Steel Glow Plugs Beru high-tech steel glow plugs are an ideal fast, durable and green solution for two- and three-phase glow technologies.

Two-phase technology Type GV — these glow plugs meet the pre-heating and heating performance requirements of older diesel engines. They deliver reliable cold starting, and a short pre-heating time of seconds. Commercial Vehicles Glow Plugs BERU also offers a range of glow plugs designed to meet the specific needs of vans, trucks and other industrial applications. This includes: Flame Start System Type GF delivers reliable, convenient and green cold-starting performance even at low temperatures.

Available in two versions 12V and 24V , the Flame Start System has a short pre-heating time and a long post-flame time. Spark plugs are not used in diesel vehicles because they do not produce enough heat for the mixture in a diesel combustion chamber. Cylinder compression is stronger in diesel engines, so they require more heat to ignite.

A glow plug is the only thing that can generate the additional heat needed to start and run a diesel engine. Depending on the outside temperature, there may be times that you can achieve ignition after several attempts to start your vehicle. However, in freezing winter temperatures, it is unlikely that a diesel engine will start at all if the glow plug is faulty.

If you are having trouble starting your diesel vehicle, especially in the winter, have your glow plug tested as soon as possible. Another sign that your glow plug is faulty would be black smoke coming out of the vehicle when you try and start the engine. The black smoke results from the fuel that did not go through the combustion process properly because of a bad glow plug.

If you have experienced these symptoms and your vehicle still manages to start and drive, it likely is not performing very well.

You will most likely experience the following problems:. These driving conditions can be unsafe and could result in further and more expensive vehicle damage.



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