Back to results
US 2003/0213465 A1Published application
Method and device for controlling an engine
AssigneeRobert Bosch GmbH
InventorsGerhard Fehl, Winfried Langer
Life of this patent
Estimating the term…
Abstract
A method and a device for controlling an engine, in which a control module calculates a setpoint torque based on an accelerator position and calculates an air mass and a fuel mass from this setpoint torque. In the process, a setpoint value for lambda (ratio of air mass to fuel mass) is taken into account when the fuel mass is calculated. A monitoring module calculates a monitoring value for the air mass from the fuel mass and compares it to a measured air mass for fault detection.
Claims10
A method for controlling an engine comprising:
- calculating, using a control module, a setpoint torque as a function of an accelerator position;
- calculating, using the control module, an air mas and a fuel mass as a function of the setpoint torque, the fuel mass being calculated as a further function of a setpoint value for an air-mass-to-fuel-mass ratio (lambda);
- calculating, using a monitoring module, a monitoring value for the air mass as a function of the fuel mass;
- and
- comparing, using the monitoring module, the monitoring value for the air mass to a measured air mass for fault detection.
2 more elements
A device for controlling an engine comprising:
- a control module for calculating a setpoint torque as a function of an accelerator position and for calculating an air mass and a fuel mass as a function of the setpoint torque, the fuel mass being calculated as a further function of a setpoint value for an air-mass-to-fuel-mass ratio (lambda);
- and
- a monitoring module for calculating a monitoring value for the air mass as a function of the fuel mass and for comparing the monitoring value for the air mass to a measured air mass for fault detection.
Dependencies are inferred from the claim text.