How a Turbocharger works?

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

How does a turbocharger work ?

The Turbine End

The Compressor End

The Oil Supply

The Piston Ring Seals

Summary

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.

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.

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.

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.

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.

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.

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

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

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

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.

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.

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.

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.

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.

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.

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.

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 ?

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 ?