Engine Management Systems - Denso-am.eu

Engine Management SystemsFuel PumpsGBHow they workTypesThe role of the electrical Fuel Pump is to deliver fuel from the tankto the engine, under high pressure, depending on the vehicleapplication’s specific requirements. The fuel is transported to fuelinjectors, which spray the fuel into the engine cylinders.Types of Fuel Pump include in-line and in-tank types. The in-tanktype, located in the fuel tank, is currently the most widely used, and isdescribed below.> The location of an in-tank Fuel Pump helps to reduce noiseproduced by the electric fuel pump motor. It also keeps the pumpsupplied with fuel, lubricating and cooling the pump motor> When the impeller of an in-tank Fuel Pump rotates, the blademoves around the impeller, creating a swirling motion inside thepump to deliver fuel. The fuel then passes around the motor,forcing the check valve upwards to supply fuel to the fuel pipe> Type C in-tank> Type H38 in-tankFeatures and benefits> Low Noise: Turbine pump technology with a V-shaped internalimpeller delivers fuel with minimal pressure pulsation, for quietoperation> Accuracy: Accurately measures pressure for better performance> All-New: Pumps contain all new parts, not remanufactured> Performance: Operate at higher speeds and draw less currentthan older style pumps> Due to the use of engines with large cylinder displacement, FuelPumps with greater capacities are increasingly needed. Thedischarge volume of these pumps must therefore be controlled tosuit the operating conditions of the engine. This is made possibleby the turbine technology of in-tank Fuel PumpsView of pumpPrinciple of pump operationPump constructionOUTOUTHousingBlade groovesConnectorCheck valveArmatureHousingMagnetSuction Discharge ImpellerImpellerININCharacteristics> Check Valve: Maintains consistent system pressure for superior hot fuel handling ability> Choke Coils: Ensure minimal radio interference> Relief Valve: Protects the fuel delivery system> Brushes: Designed for durability, efficiency, and low-resistance operation> Armature: Ultra-high balance to minimise noise and vibration> Impeller: Delivers fuel with minimal pressure pulsation for quieter operation10