process for the schneidzu00e4hne hinterschleifen of gewindebohrern, gewindeformern and similar tools, and grinding machine for implementing the method

摘要

A method for operating an internal combustion engine, the one intake tract (1) and an exhaust gas tract (4) to at least one combustion chamber (9) of the internal combustion engine as a function of the switch position to communicate at least one gas intake valve (12) or of at least one gas outlet (13), wherein the– within a first driving cycle (dc) of the internal combustion engine, a combustion process in the at least one combustion chamber (9) in the sense of a checking (check) of an emission reduction system of the internal combustion engine is controlled,– in a second driving cycle (dc) according to the first driving cycle (dc), it is checked whether during the first driving cycle (dc) an error (error) of the emission reduction system has been recognized,– a standing time (dur _ off) of the internal combustion engine, between the first and the second driving cycle (dc) is determined, if during the first driving cycle (dc) an error (error) of the emission reduction system has been recognized,– in the second driving cycle (dc) of the internal combustion engine of the combustion process in the at least one combustion chamber (9) only in the sense of the checking (check) of the emission reduction system is controlled..