FUEL INJECTORPresented byBirupakhya pr.SahuMd.Amjad AnsariSouravdutta PattnaikAnand KumarSudhansu Se. Palei

Contents…INTRODUCTION

CLASSIFICATIONNOZZLE

SPRAY DELIVERYADVANTAGES

DISADVANTAGESCONCLUSION

INTRODUCTION A FUEL INJECTOR IS USED TO INJECT

THE FUEL IN THE CYLINDER IN ATOMISED FORM AND IN PROPER QUANTITY.

FUEL INJECTOR IS THE MAIN COMPONENT OF FUEL INJECTION

IT IS A SPRAY DELIVERY DEVICE

CLASSIFICATION MECHANICAL FUEL INJECTOR ELECTRONICS FUEL INJECTOR

MECHANICAL FUEL INJECTOR

PURELY MECHANICAL FUEL INJECTOR FOR INTERNAL COMBUSTION ENGINE UTILIZES A SINGLE PLUNGER PISTON WITHIN A PLUNGER BARREL FOR FUEL PUMPING, FUEL/AIR MIXING,AND FUEL INJECTION FUNCTIONS.

THE FUEL INJECTOR UTILISES A FUEL BYPASS VALVE TO METERFUEL TO THE FUEL INJECTOR & /OR BYPASS FUEL TO FUEL TANK IN RESPONSE TO POSITION OF THE AIR THROTTLE VALVE ON THE ENGINE AIR INTAKE

COMPONENTS NEEDLE VALVE COMPRESSION SPRING A NOZZLE INJECTOR BODY

ELECTRONIC FUEL INJECTOR

electronic fuel injector through ECUsignal to apply for the current or voltage act on electromagnetic coil of fuel injector, then produce electromagnetic force, and enhance the valve then opened and spraying fuel.

 At present, the BOSCH produce more than 1,100 kinds of fuel injectors.  

COMPONENTS ELECTRICAL CONNECTOR ELECTRONIC COIL MAGNET NOZZLE

NOZZLE NOZZLE IS THAT PART

OF INJECTOR THROUGH WHICH THE LIQUID FUEL IS SPREAD INTO THE COMBUSTION CHAMBER

TYPES OF NOZZLE THERE ARE ESSENTIALLY FOUR

DIFFERENNT TYPES OF NOZZLES PINTLE BOSCH DISC INJECTOR LUCAS DISC INJECTOR BALL

SOME NOZZLES

PINTLE BOSCH DISC

BALL LUCAS DISC

DIFFERENT NOZZLE SHAPE

SPRAY DELIVERY DEVICES

INJECTOR IS A SPRAY DELIVERY DEVICE. INJECTOR IS RESPONSIBLE FOR

PRODUCING THE DESIRED SPRAY,WITH A CORRECT SIZE DISTRIBUTION & VELOCITY.

INJECTOR IS VERY IMPORTANT FOR THE SPRAY BEHAVIOUR.

ONCE THE FUEL IS INJECTED THERE IS NOT MUCH ONE CAN DO TO CHANGE THE SPRAY CHARACTERSISTICS.

SCHEMATIC OF SPRAY

SPRAY PATTERN

ADVANTAGES INJECTOR ATOMIZES THE FUEL. INJECTOR INJECT THE FUEL AT HIGH

PRESSURE. INJECTOR DISTRIBUTE THE FUEL

UNIFORMLY THROUGHOUT THE CYLINDER

Symptoms of a bad fuel injector

Rough Engine Idle Engine Missing Fuel Leak Engine Surging Poor Gas Mileage

conclusion FUEL INJECTOR IS A AN EXCELLENT TECHNOLOGY

WHICH HAD PREDOMINANTLY SOLVED MANY PROBLEMS OF IGNITION TECHNOLOGIES ACROSS THE GLOBE. IT WILL BE THE ANSWER FOR AN ECO-FRIENDLY ENGINE WITH MORE POWER & LESS POLLUTION

ANY QUARIES…??

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