Control device and method for setting a control device which can be retrofitted, with which an internal combustion engine operated with liquid fuel is controlled after switching over to operation with gaseous fuel

摘要

The invention relates to a method for setting a control device which can be retrofitted, with which an internal combustion engine (11) operated with liquid fuel is controlled after switching over to operation with gaseous fuel, a cold start operating phase being detected in the control device (51) in which the a specific parameters of an internal combustion engine (11) adapted to the type of fuel are output until the operating temperature is reached, the internal combustion engine (11) is set to a first value of a secondary pressure for operation with gaseous fuel after the operating temperature has been reached, an exhaust gas measurement is carried out as a function of the exhaust gas measurement the secondary pressure is maintained, increased or decreased, and the secondary pressure is determined and stored after the optimum exhaust gas value has been reached.