Patent application number | Description | Published |
20090326787 | Method and Device for Operating an Internal Combustion Engine - During the operation of an internal combustion engine, a check is made whether the engine functions in an error-free manner in relation to the engine noise. If not, a current value of a cylinder-specific fuel quantity in a cylinder is determined. A check is made whether a current injected cylinder-specific fuel quantity in one of the cylinders is too low or high to check with respect to a cylinder-specific motor speed N_CYL, by comparing a current value of the cylinder-specific injection quantity in the relevant cylinder with a stored reference value of the cylinder-specific injection quantity of the relevant cylinder at the current operating point. A check with respect to the cylinder-specific motor speeds of one of the cylinders is deactivated, if the current injected cylinder-specific fuel quantity in the relevant cylinder is too low or high to check the relevant cylinder with respect to the cylinder-specific motor speed N_CYL. | 12-31-2009 |
20100059017 | METHOD AND DEVICE FOR DETERMINING AN OPTIMIZED EMERGENCY RUNNING FUNCTION IN A FAULT-AFFLICTED ENGINE OF A MOTOR VEHICLE - In a motor vehicle having an emergency running device, there is the problem that, in the event of certain fault symptoms occurring, an emergency running function is initiated and the torque of the engine is in the process limited to an unsuitable low value. In the worst case, this can lead to insufficient acceleration, for example during an overtaking maneuver, and to an accident occurring. It is therefore proposed that the determination of an optimized emergency running function be defined as a function both of the present driving state of the motor vehicle and also of the type of fault symptom depending on which the risk and the level of danger are graded into classes and an optimized emergency running function is then determined and initiated. Thus, sufficient torque and rotational speed can be provided for reliable vehicle control even in an unfavorable traffic situation without damaging the endangered components. | 03-11-2010 |
20100275680 | METHOD AND DEVICE FOR CARRYING OUT AN ADAPTATION AND A DIAGNOSIS OF EMISSION-RELEVANT CONTROL DEVICES IN A VEHICLE - In a method and a device which allow carrying out of at least part of the adaptation and the diagnosis of a defined driving mode, the following steps are performed: determining whether the vehicle has reached a defined driving mode, carrying out a diagnosis of at least one of the emission-relevant control devices once it is detected that the vehicle has reached the defined driving mode, the diagnosis determining and optimizing at least one parameter of an operating point of at least one emission-relevant control device if said parameter deviates from a set range or a set value; and carrying out at least one adaptation step of the adaptation of at least one emission-relevant control device, at least one parameter of a plurality of operating points of the emission-relevant control devices being determined and optimized during said adaptation if said parameter deviates from a set range or a set value. | 11-04-2010 |
20100292866 | METHOD AND DEVICE FOR OPERATING A MOTOR VEHICLE, METHOD AND DEVICE FOR ACCESSING AN ASSIGNMENT RULE AND COMPUTER-PROGRAM PRODUCT - To operate a motor vehicle ( | 11-18-2010 |
20100305811 | METHOD AND DEVICE FOR IDENTIFYING ERRORS IN EMISSION-RELEVANT CONTROL DEVICES IN A VEHICLE - A method and a device for identifying errors in emission-relevant control devices of a vehicle, such as the injection of fuel into a cylinder, allows error identification even if none of the sub-systems exceeds a predetermined threshold value. The method has the following steps: determining whether at least one parameter, which permits conclusions to be drawn about the emission behaviour of the respective control device, lies in a desired range; if the parameter lies outside said desired range, an error value that correlates to an increase in emissions is stored; if the parameter is in the desired range, an error value of zero is stored; a total error value is formed from all error values of the control device and an error message is output if the total error value exceeds a predetermined threshold value. | 12-02-2010 |
20110077842 | METHOD FOR TESTING A PRESSURE SENSOR OF A FUEL ACCUMULATOR DEVICE - In a method for testing a pressure sensor of a fuel accumulator device in an internal combustion engine, the pressure in the fuel accumulator device is altered and the influence of said alteration on the torque generated by the internal combustion engine is determined. A deviation of the measured alteration from the expected alteration is then calculated. | 03-31-2011 |
20110098976 | METHOD FOR IDENTIFYING AN ERROR FUNCTION AND IN PARTICULAR A DRIFT OF A RAIL PRESSURE SENSOR IN A COMMON RAIL INJECTION SYSTEM - In order to locate errors of the rail pressure sensor ( | 04-28-2011 |
Patent application number | Description | Published |
20090326787 | Method and Device for Operating an Internal Combustion Engine - During the operation of an internal combustion engine, a check is made whether the engine functions in an error-free manner in relation to the engine noise. If not, a current value of a cylinder-specific fuel quantity in a cylinder is determined. A check is made whether a current injected cylinder-specific fuel quantity in one of the cylinders is too low or high to check with respect to a cylinder-specific motor speed N_CYL, by comparing a current value of the cylinder-specific injection quantity in the relevant cylinder with a stored reference value of the cylinder-specific injection quantity of the relevant cylinder at the current operating point. A check with respect to the cylinder-specific motor speeds of one of the cylinders is deactivated, if the current injected cylinder-specific fuel quantity in the relevant cylinder is too low or high to check the relevant cylinder with respect to the cylinder-specific motor speed N_CYL. | 12-31-2009 |
20100059017 | METHOD AND DEVICE FOR DETERMINING AN OPTIMIZED EMERGENCY RUNNING FUNCTION IN A FAULT-AFFLICTED ENGINE OF A MOTOR VEHICLE - In a motor vehicle having an emergency running device, there is the problem that, in the event of certain fault symptoms occurring, an emergency running function is initiated and the torque of the engine is in the process limited to an unsuitable low value. In the worst case, this can lead to insufficient acceleration, for example during an overtaking maneuver, and to an accident occurring. It is therefore proposed that the determination of an optimized emergency running function be defined as a function both of the present driving state of the motor vehicle and also of the type of fault symptom depending on which the risk and the level of danger are graded into classes and an optimized emergency running function is then determined and initiated. Thus, sufficient torque and rotational speed can be provided for reliable vehicle control even in an unfavorable traffic situation without damaging the endangered components. | 03-11-2010 |
20100275680 | METHOD AND DEVICE FOR CARRYING OUT AN ADAPTATION AND A DIAGNOSIS OF EMISSION-RELEVANT CONTROL DEVICES IN A VEHICLE - In a method and a device which allow carrying out of at least part of the adaptation and the diagnosis of a defined driving mode, the following steps are performed: determining whether the vehicle has reached a defined driving mode, carrying out a diagnosis of at least one of the emission-relevant control devices once it is detected that the vehicle has reached the defined driving mode, the diagnosis determining and optimizing at least one parameter of an operating point of at least one emission-relevant control device if said parameter deviates from a set range or a set value; and carrying out at least one adaptation step of the adaptation of at least one emission-relevant control device, at least one parameter of a plurality of operating points of the emission-relevant control devices being determined and optimized during said adaptation if said parameter deviates from a set range or a set value. | 11-04-2010 |
20100292866 | METHOD AND DEVICE FOR OPERATING A MOTOR VEHICLE, METHOD AND DEVICE FOR ACCESSING AN ASSIGNMENT RULE AND COMPUTER-PROGRAM PRODUCT - To operate a motor vehicle ( | 11-18-2010 |
20100305811 | METHOD AND DEVICE FOR IDENTIFYING ERRORS IN EMISSION-RELEVANT CONTROL DEVICES IN A VEHICLE - A method and a device for identifying errors in emission-relevant control devices of a vehicle, such as the injection of fuel into a cylinder, allows error identification even if none of the sub-systems exceeds a predetermined threshold value. The method has the following steps: determining whether at least one parameter, which permits conclusions to be drawn about the emission behaviour of the respective control device, lies in a desired range; if the parameter lies outside said desired range, an error value that correlates to an increase in emissions is stored; if the parameter is in the desired range, an error value of zero is stored; a total error value is formed from all error values of the control device and an error message is output if the total error value exceeds a predetermined threshold value. | 12-02-2010 |
20110077842 | METHOD FOR TESTING A PRESSURE SENSOR OF A FUEL ACCUMULATOR DEVICE - In a method for testing a pressure sensor of a fuel accumulator device in an internal combustion engine, the pressure in the fuel accumulator device is altered and the influence of said alteration on the torque generated by the internal combustion engine is determined. A deviation of the measured alteration from the expected alteration is then calculated. | 03-31-2011 |
20110098976 | METHOD FOR IDENTIFYING AN ERROR FUNCTION AND IN PARTICULAR A DRIFT OF A RAIL PRESSURE SENSOR IN A COMMON RAIL INJECTION SYSTEM - In order to locate errors of the rail pressure sensor ( | 04-28-2011 |