How does a fuel injector work?Ĭontrary to popular belief, fuel injectors do not “inject” fuel into the engine.
On these engines, the combustion process is initiated at several points throughout the combustion chamber, but how well (or otherwise) the combustion process works depends on the size of the fuel droplets, and how well the fuel droplets are distributed throughout the air/fuel mixture. Note that on diesel engines, the propagation of the detention flame does not depend on a spark. Therefore, by reducing the size of the fuel droplets, mixing of the fuel with the intake air is improved, which in turn, improves the way the detonation flame propagates. In practice, the air/fuel mixture is ignited only around the tip of the spark plug, and the detonation flame propagates outward from this point. Modern emissions regulations have forced engine designers to improve the efficiency of the combustion process on both gasoline and diesel applications, and vaporizing the pressure fuel into as fine a mist as possible has gone a long way towards increasing the efficiency of the combustion process.Įssentially, the problem of combustion efficiency involves the propagation of the detonation flame, also known as the flame front. The degree of vaporization depends on the engine, the type and temperature of the fuel used, and the actual fuel pressure at any given moment. The primary function of fuel injectors on both gasoline and diesel engines is to vaporize pressurized fuel when it passes through the injector, into the engine or combustion chamber.
#Will a bad injector set a dtc code manual
Nonetheless, be aware that neither similarities in operation, appearance, or location, nor effects on engine operation when any given sensor fails is guaranteed, and it is therefore recommended that the relevant technical manual be consulted for details on the location, manufacturer specific diagnostic information, replacement procedures, and other technical information pertaining to the affected application. However, since the basic operating principles of any given engine sensor is largely similar across all makes and models, it is possible to apply the information provided here to a large range of applications. SPECIAL NOTES: Note that the information provided in this guide is of a generic nature, and is intended for informational purposes only.
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