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E L E C T R I C A L C O M P O N E N T S
Actuators
• Actuators convert electrical output from the
PCM to hydraulic, mechanical, or electronic
work.
• The 6.0L Power Stroke uses four (4)
actuators: Injection Pressure Regulator,
Exhaust Gas Recirculation Valve, Variable
Geometry Turbocharger Control Valve, and
Glow Plug Control module.
IPR (Injection Pressure Regulator)
• The IPR (Injector Pressure Regulator) is a
duty cycle controlled valve that the PCM
uses to control ICP (Injection Control
Pressure).
• The IPR is a valve that blocks the path to
drain for oil coming out from high pressure
pump. As duty cycle signal increases at the
IPR the restriction to drain increases, thus
increasing ICP.
• When the valve is disconnected it is in its
open or drain state and the engine should
not start.
• The IPR valve also contains the pressure
relief valve for the high pressure oil system.
EGR (Exhaust Gas Recirculation)
Valve
• The EGR (Exhaust Gas Recirculation) valve
is used to mix cooled exhaust gasses with
intake air to lower emissions and noise.
• The EGR valve is duty cycle controlled, the
higher the duty cycle the more the valve
opens.
• When the valve is disconnected it is in its
closed state.
64
Actuators
• Injection Pressure Regulator (IPR)
• Exhaust Gas Recirculation Valve (EGR)
• Variable Geometry Turbocharger Control
Valve (VGTCV)
• Glow Plug Control Module (GPCM)
OIL OUT
INTAKE AIR
O-RINGS
118
O-RINGS
OIL IN
119
COOLED EXHAUST
INTAKE AIR
120
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