How A Turbo Charger Works

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  • 1. How a Turbocharger works?
  • 2. Holset Product Training How A Turbocharger Works
    • How does a turbocharger work ?
    • The Turbine End
    • The Compressor End
    • The Oil Supply
    • The Piston Ring Seals
    • Summary
  • 3. Holset Product Training How A Turbocharger Works
    • The turbine housing is bolted
    • to the exhaust manifold of the
    • engine.
    • The waste exhaust gasses are
    • used to rotate a turbine wheel
    • which is housed in the turbine
    • casing.
    • The turbine wheel is connected
    • to a common shaft which in turn
    • rotates a compressor wheel.
  • 4. Holset Product Training How A Turbocharger Works
    • Rotating the turbine wheel is
    • the only use for the waste
    • exhaust gas.
    • Once the gas has passed
    • through the blades of the wheel
    • it leaves the turbine housing
    • via the exhaust outlet area.
  • 5. Holset Product Training How A Turbocharger Works
    • As more gas passed through
    • the turbine housing, the faster
    • the turbine wheel rotates.
    • As the turbine wheel increases in
    • speed, so does the compressor
    • wheel. This creates a sucking
    • process and pulls air into the
    • compressor cover from the
    • atmosphere (filtered)
    • The faster the wheels spin the,
    • the more air is sucked in.
  • 6. Holset Product Training How A Turbocharger Works
    • As the air is sucked into the
    • compressor cover, it is forced
    • through a diffuser area.
    • This compressors the air and
    • forces it into the engine
    • This process causes the air to
    • increase in temperature,
    • sometimes up to 200 degrees C
  • 7. Holset Product Training How A Turbocharger Works
    • Front Wheel Clearance affects the
    • performance of the turbo.
    • The smaller the FWC the better
    • the performance.
    • The Compressor Wheel Bore must
    • be machined to tolerance / drawing.
    • Over sized bore will affect the balance
    • of the turbocharger.
    Compressor Wheel Profile Compressor Cover Profile. Compressor Wheel Bore F W C
  • 8. Holset Product Training How A Turbocharger Works
    • The oil used in a turbocharger is
    • the same as that used for your
    • engine.
    • The oil is used as both a lubricant
    • and a coolant.
    • It is fed under pressure into the
    • bearing housing, through to the
    • journal bearings and thrust
    • system.
  • 9. Holset Product Training How A Turbocharger Works
    • The Journal Bearings are a free
    • floating rotational type.
    • To perform correctly, the journal
    • bearings should float between a film
    • of oil (i.e. between bearing & shaft,
    • & bearing & bearing housing.)
    • Dirty oil, or blockages in the oil
    • supply holes can cause serious
    • damage to the turbocharger.
  • 10. Holset Product Training How A Turbocharger Works
    • Piston Ring Seals, can be found
    • at both ends of the turbocharger
    • They are designed to keep the
    • exhaust pressure out of the
    • bearing housing, and the air
    • pressure out of the bearing
    • housing.
    • The surface finish on both
    • Turbine & Compressor end bore
    • must be smooth and score free.
  • 11. Holset Product Training How A Turbocharger Works
    • Summary
    • What is the function of the
    • Turbine Housing ?
    • What is the function of the
    • Compressor Housing ?
    • What is the function of the
    • oil in the turbocharger ?