cylinder for which one induction manifold 18 is connected in the conventional manner to the induction ports 16 the induction manifold 18 is composed essentially of a first header 20 a second header 22 one short individual pipe 24 and one long individual pipe 26 per cylinder of the internal combustion engine the individual pipes 24 empty into the header 22 in this case while the individual pipes 26 enter the header 20 the individual pipes 24 26 combine into a common single pipe in front of the connection to the induction ports 16 the headers 20 22 are interconnected via a connecting pipe 28 in the header 20 in its induction connection 32 is an arbitrarily controllable throttle valve 32 which is connected to the gas pedal of the motor vehicle this is not shown and which is used to control the performance of the internal combustion engine in addition in the short individual pipes 24 are butterfly valves 34 which in one of their positions as shown close the short individual pipes 24 while in the other end position completely open them the butterfly valves 34 are actuated via a rod assembly 36 which is only partially shown.