Abstract: The invention relates to a method for automatically generating smoothed characteristic diagrams for electronic engine controls of internal combustion piston engines. The invention is characterized in that the adjustment variable combination of the individual successive operating points are input by means of a motor control to a reference internal combustion piston engine by entering specified values of the boundary conditions for the operation of an internal combustion piston engine. According to the invention, the reference internal combustion piston engine is operated in this operating point, and the actual values and/or boundary conditions occurring during the same are acquired and compared with the specified values of the boundary conditions in an optimization system assigned to the engine control and, in the instance of variations, the adjustment variable combinations are optimally altered in a progressive manner by the optimization system.

Abstract: New substituted 1-(4-amino-6,7-dialkoxyquinazolinyl)-4-cyclohexenyl derivatives of piperazine and homopiperazine, of the general formula I ##STR1## in which R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5, which can be identical or different, denote hydrogen, straight-chain or branched alkyl groups with in each case 1 to 6 carbon atoms, cyclic aliphatic radicals with in each case 5 to 7 carbon atoms, aromatic radicals or substituted aromatic radicals, which can be monosubstituted or polysubstituted by identical or different substituents from the group comprising halogen and lower alkyl groups with in each case 1 to 4 carbon atoms in the alkyl part, or denote aralkyl radicals, furanyl radicals or thienyl radicals, orR.sup.2 and R.sup.3 together denote the group --(CH.sub.2).sub.a --, wherein a is the number 4 or 5, orR.sup.3 and R.sup.4 together denote the group --(CH.sub.2).sub.b --, wherein b is the number 3, 4 or 5,R.sup.6 and R.sup.