A fuel injector injects atomized fuel into the cylinder in the proper quantity. It is the main component of a fuel injection system and is a spray delivery device. There are mechanical and electronic fuel injectors. Mechanical injectors use a single piston to pump, mix, and inject fuel while electronic injectors are controlled by an ECU through electromagnetic coils. Fuel injectors have components like a nozzle, needle valve, spring, and body to atomize and distribute fuel uniformly in the cylinder.

3.  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

4.  MECHANICAL FUEL INJECTOR
 ELECTRONICS FUEL INJECTOR

5.  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

6.  NEEDLE VALVE
 COMPRESSION SPRING
 A NOZZLE
 INJECTOR BODY

7.  electronic fuel injector through ECU
signal 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.

8.  ELECTRICAL CONNECTOR
 ELECTRONIC COIL
 MAGNET
 NOZZLE

9. NOZZLE IS THAT PART
OF INJECTOR THROUGH
WHICH THE LIQUID FUEL
IS SPREAD INTO THE
COMBUSTION CHAMBER

10. THERE ARE ESSENTIALLY FOUR DIFFERENNT
TYPES OF NOZZLES
 PINTLE
 BOSCH DISC INJECTOR
 LUCAS DISC INJECTOR
 BALL

11. PINTLE BOSCH DISC
BALL LUCAS DISC

13.  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.

16.  INJECTOR ATOMIZES THE FUEL.
 INJECTOR INJECT THE FUEL AT HIGH
PRESSURE.
 INJECTOR DISTRIBUTE THE FUEL
UNIFORMLY THROUGHOUT THE CYLINDER

17.  Rough Engine Idle
 Engine Missing
 Fuel Leak
 Engine Surging
 Poor Gas Mileage

18.  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