Back to results
US 8,261,605 B2Granted
Method and device for controlling a fuel metering system
AssigneeRobert Bosch GmbH
InventorsHenning Hermes, Traugott Degler, Andreas Hempel, Andreas Sommerer, Jens-Uwe Nagler, Marcus Marheineke
Life of this patent
Estimating the term…
Abstract
A method and a device for controlling a fuel metering system are described. The fuel metering system includes at least one injector for injecting fuel into an internal combustion engine. An electric current value is applied to the at least one injector, and a rail pressure value is determined based on the electric current value.
Claims20
A method for controlling a fuel metering system, comprising:
- injecting fuel into an internal combustion engine by at least one injector, wherein an electric current value is applied to the at least one injector;
- performing a plausibility check of a signal of a rail pressure sensor;
- triggering an actuator to control the fuel pressure when a defect in the rail pressure sensor is detected, so that rail pressure rises so as to trigger at least one injector to perform at a reduced electric current value;
- performing a query to determine if a sufficient waiting time has elapsed before applying the reduced electric current value;
- and
- determining a rail pressure value based on at least the electric current value.
3 more elements
A device for controlling a fuel metering system, comprising:
- at least one injector for injecting fuel into an internal combustion engine;
- an actuator to control the fuel pressure when a defect in a rail pressure sensor is detected;
- an arrangement to perform a query to determine if a sufficient waiting time has elapsed before applying an electric current value;
- an arrangement to apply the electric current value to the at least one injector;
- and
- a determining arrangement to determine a rail pressure value based on at least the electric current value.
3 more elements
Dependencies are inferred from the claim text.