GF09.40-W-4050H | Component description for turbine wheel rpm sensor | 10.5.12 |
ENGINES 470.9 in MODEL 963 with CODE (M5Z) Engine version Euro VI
ENGINES 471.9 in MODEL 963 with CODE (M5Z) Engine version Euro VI
W09.40-1229-06
Location
Shown on engine 471.9
B610 Turbine wheel rpm sensor
The turbine wheel rpm sensor (B610) is located in the center of the turbocharger.
Task
The turbocharger rotor speed is detected by the engine management (MCM) control unit (A4) over the turbine wheel rpm sensor (B610).
The rotor speed is used to protect the turbocharger from running at excessively high rotational speeds.
Design
The turbine wheel rpm sensor (B610) is an inductive sensor and possesses a permanent magnet as well as a sensor coil.
Function
The permanent magnet on the turbine wheel rpm sensor (B610) generates a magnetic field. Magnetic field changes occur due to a groove in the turbocharger shaft when the shaft turns. A voltage is induced in the coil of the turbine wheel rpm sensor (B610) or inductive voltage signals are generated. With the aid of these signals the engine management (MCM) control unit (A4) can determine the rotor speed.