Modulating Piston Movement Sender - Volkswagen Marine TDI 100-5 User Manual

Modulating piston movement sender

The modulating piston movement sender signals
to the engine control unit the current position of
the metering adjuster in the injection pump.
Functional description
An alternating voltage generates an alternating
magnetic field in a special iron core. A metal ring
that is secured to the eccentric shaft moves along
the iron core.
This movement influences the magnetic field.
The engine control unit evaluates this change
and thus obtains the current position of the
metering adjuster.
Substitute function
If the engine control unit receives no signal from
the modulating piston movement sender, the
engine will be shut down for safety reasons.
Effect
Engine operation is not possible.
Engine electronic systems
Distributor
injection pump
Superior 29 Technology
Coil with alternating
voltage
Iron core
Moving
metal ring
Eccentric
shaft
Fixed metal ring
MSSP_001_021