Arrangement for recognizing differences in RPM between two exhaust gas turbochargers
AssigneeRobert Bosch GmbH
InventorsBernhard Schray, Werner Haming, Michael Bauerle
Life of this patent
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Abstract
An arrangement enabling a reliable detection of speed-of-rotation deviations between two exhaust-gas turbochargers of an internal combustion having separate cylinder banks included a device, which determines the difference between the pressures prevailing in the two exhaust trains of the two cylinder banks upstream from the exhaust turbines and signals a relevant speed deviation when the pressure difference determined exceeds a specifiable threshold.
Claims7
An arrangement for detecting speed-of-rotation deviations between two exhaust-gas turbochargers of an internal combustion engine, the arrangement comprising:
- a first cylinder bank;
- a second cylinder bank;
- a first exhaust train including a first exhaust turbine provided for the first cylinder bank;
- a second exhaust train including a second exhaust turbine provided for the second cylinder bank;
- and
- a device determining a difference between first and second pressures, between first and second gas masses, or between first and second gas volumes present in the first and second exhaust trains, respectively, upstream from the first and second exhaust turbines, respectively, the device indicating a speed deviation when the difference exceeds a predetermined threshold.
Dependencies are inferred from the claim text.