from
The Collaborative International Dictionary of English v.0.48
Automixte system \Au`to*mixte" system\ (Mach.)
A system (devised by Henri Pieper, a Belgian) of driving
automobiles employing a gasoline engine and an auxiliary
reversible dynamo. When there is an excess of power the
dynamo is driven by the engine so as to charge a small
storage battery; when there is a deficiency of power the
dynamo reverses and acts as an auxiliary motor. Sometimes
called {Pieper system}. -- {Automixte car}, etc.
[Webster 1913 Suppl.]