DAF CF65, CF75, CF85 Series . Manual - part 432

©

 200416

2-1

General

CE ENGINE INLET/EXHAUST SYSTEM

ΧΦ65/75/85 series

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3

2. GENERAL

2.1 LOCATION OF COMPONENTS

1.

Wastegate diaphragm box

2.

Oil supply pipe

3.

Oil discharge pipe

4.

Turbocharger

5.

Exhaust manifold

3

4

5

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2

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CE ENGINE INLET/EXHAUST SYSTEM

2-2

©

 200416

General

3

ΧΦ65/75/85 series

4

1.

Glow element connections

2.

Intake manifold

1

2

i400841

©

 200416

2-3

General

CE ENGINE INLET/EXHAUST SYSTEM

ΧΦ65/75/85 series

4

3

2.2 SYSTEM DESCRIPTION, TURBOCHARGER WITH WASTEGATE

To make the engine more responsive at lower 
engine speeds, a turbocharger is used that 
produces a better charge ratio at these speeds. 
Without provision having been made for this, the 
boost pressure yielded by this turbocharger 
would be too high at maximum engine speeds. 
Use of a wastegate prevents this.

The boost pressure is measured by a diaphragm 
box (1) on the delivery side of the turbocharger. 
The diaphragm is pushed back against the spring 
pressure by the boost pressure. The linked 
control rod (2) is also pushed back. The control 
rod operates a valve in the turbine housing (3).
The valve in the turbine housing is opened when 
the maximum pre-set pressure has been 
reached.

When the valve is opened, some of the exhaust 
gases will be discharged directly to the exhaust 
pipe rather than being used to propel the turbine 
rotor of the turbocharger.

i400509

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CE ENGINE INLET/EXHAUST SYSTEM

2-4

©

 200416

General

3

ΧΦ65/75/85 series

4