摘要:
A method is disclosed for operating an exhaust gas catalytic converter designed to reduce nitrogen oxides in an exhaust gas flow using a solution that contains urea and that reacts to form at least ammonia in the exhaust gas flow. The method may include: introducing an amount of the solution containing urea upstream of the exhaust gas catalytic converter until an ammonia slip through the exhaust gas catalytic converter; determining a first actual value of the loading state of the catalytic converter with ammonia at the time of the slip; determining a first estimated value of the loading state at the time of the slip by means of a dynamic model for the loading; subsequently draining the ammonia from the catalytic converter; determining a second actual value of the loading state of the exhaust gas catalytic converter with the solution containing urea when the catalytic converter is drained as specified.
摘要:
A method is disclosed for operating an exhaust gas catalytic converter designed to reduce nitrogen oxides in an exhaust gas flow using a solution that contains urea and that reacts to form at least ammonia in the exhaust gas flow. The method may include: introducing an amount of the solution containing urea upstream of the exhaust gas catalytic converter until an ammonia slip through the exhaust gas catalytic converter; determining a first actual value of the loading state of the catalytic converter with ammonia at the time of the slip; determining a first estimated value of the loading state at the time of the slip by means of a dynamic model for the loading; subsequently draining the ammonia from the catalytic converter; determining a second actual value of the loading state of the exhaust gas catalytic converter with the solution containing urea when the catalytic converter is drained as specified.
摘要:
A system for running an internal combustion engine has at least two mode managers for activating and/or for requesting at least one combustion mode of the internal combustion engine. The system further has a combustion manager (9) wherein each of the output of the mode managers (1-7) are attached at least at one input of the combustion manager (9) for collecting and prioritizing all combustion mode requests active at the same time.
摘要:
A system for running an internal combustion engine has at least two mode managers for activating and/or for requesting at least one combustion mode of the internal combustion engine. The system further has a combustion manager (9) wherein each of the output of the mode managers (1-7) are attached at least at one input of the combustion manager (9) for collecting and prioritizing all combustion mode requests active at the same time.
摘要:
A method for correcting the injection duration of injections is based on pressure fluctuations of preceding injections. The injection duration is determined on the basis of a mapping value and of a correction value. The mapping value is read out from a mapping according to the fuel pressure and according to the amount of fuel to be injected. The correction value is calculated according to the time interval between the subsequent injection and at least one latter injection. This enables a precise determination of the injection duration and thus a precise metering of the desired amount of fuel.
摘要:
A method for precisely controlling the charge pressure in an internal combustion engine with an exhaust-gas turbocharger is disclosed. According to said method, the output or torque of the turbine is determined based on the outputs or torques of the compressor and the loss on the shaft and the selected set point for the correcting variable for adjusting the charge pressure is determined according to said output or said torque of the turbine.