Acceleration aid for an internal combustion engine having an exhaust-driven turbocharger

In an auxiliary combustion air supply arrangement for an internal combustion engine having a combustion air supercharger that is driven by an exhaust ga turbine and that has disposed in its air line, immediately prior to entry thereof into the intake manifold of said internal combustion engine, an automatic valve that is opened when an air stream flows in the direction toward said intake manifold, whereby during time periods characterized by a lack of sufficient exhaust gas energy, in order to increase the supply of air to said intake manifold, auxiliary combustion air is obtained directly from a compressed air tank and is supplied to said intake manifold via an appropriate control mechanism, the improvement including:

• a delay element as part of a fuel injection system, whereby said control mechanism for air injection, as well as said delay element, are actuated by operation of a gas pedal associated with said internal combustion engine, as a result of which the supply of said auxiliary combustion air precedes the fuel injection that is demanded, and an injection of the full fuel injection quantity is not initiated until later, either in a sudden manner or pursuant to a slowly rising increase curve.