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Water injection

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M
Mohan Ram

Parts of water injection engine, principle of water injection engine and it's advantages and limitations.

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WATER INJECTION ENGINES.
CONTENTS  INTRODUCTION  WHY W.I ENGINES  CONSTRUCTION  WORKING  Characteristics  ADVANTAGES  DISADVANTAGES  CONCLUSION  REFERENCE  VIDEO
INTRODUCTION  In internal combustion engines, water injection, also known as anti- detonant injection (ADI), can spray water into the incoming air or fuel-air mixture, or directly into the cylinder to cool certain parts of the induction system where "hot points" could produce premature ignition. In jet engines it increases engine thrust at low speeds and at takeoff.
Why W.I Engines?  To reduce engine thrust.  To attain higher compression ratio.  To reduce engine knocking.  To reduce NOx emission.
Construction  Water tank.  Water pump.  Water rail.  Equipped with a combined injection valve and nozzle that allows injection of water and fuel into the cylinder separately.  Electronic engine control unit.  Electronic pump control unit.
Working of W.I Engines  precisely designed water injector which injects a fine spray of water into the engine combustion chamber through its intake port.  The water injectors are attached to the water rail which provides water to the injectors.  Water injection timing and duration is electronically controlled by control unit.  Control unit gets the input(ex:Engine RPM,temrature etc)from the engine output.
CHARACTERISTCS OF W.I ENGINES
ADVANTAGES  Water is available at free of cost.  Increases performance by 5%.  Reduces NOX emission.  13% lower the fuel consumption. OR  Increases fuel efficiency by as much as 13%.  Reduces engine knocking.  Reduces the carbon emission by 4%.
DISADVANTAGES  Refilling of water is required.  Freezing of water in water tank.  It is expensive.  Accidentally running out of water makes piston very unhappy.
THANK YOU

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Water injection

  • 2. CONTENTS  INTRODUCTION  WHY W.I ENGINES  CONSTRUCTION  WORKING  Characteristics  ADVANTAGES  DISADVANTAGES  CONCLUSION  REFERENCE  VIDEO
  • 3. INTRODUCTION  In internal combustion engines, water injection, also known as anti- detonant injection (ADI), can spray water into the incoming air or fuel-air mixture, or directly into the cylinder to cool certain parts of the induction system where "hot points" could produce premature ignition. In jet engines it increases engine thrust at low speeds and at takeoff.
  • 4. Why W.I Engines?  To reduce engine thrust.  To attain higher compression ratio.  To reduce engine knocking.  To reduce NOx emission.
  • 5. Construction  Water tank.  Water pump.  Water rail.  Equipped with a combined injection valve and nozzle that allows injection of water and fuel into the cylinder separately.  Electronic engine control unit.  Electronic pump control unit.
  • 6. Working of W.I Engines  precisely designed water injector which injects a fine spray of water into the engine combustion chamber through its intake port.  The water injectors are attached to the water rail which provides water to the injectors.  Water injection timing and duration is electronically controlled by control unit.  Control unit gets the input(ex:Engine RPM,temrature etc)from the engine output.
  • 8. ADVANTAGES  Water is available at free of cost.  Increases performance by 5%.  Reduces NOX emission.  13% lower the fuel consumption. OR  Increases fuel efficiency by as much as 13%.  Reduces engine knocking.  Reduces the carbon emission by 4%.
  • 9. DISADVANTAGES  Refilling of water is required.  Freezing of water in water tank.  It is expensive.  Accidentally running out of water makes piston very unhappy.