CPC F04D 27/002 (2013.01) [F02B 37/18 (2013.01); F02B 37/24 (2013.01); F02D 23/00 (2013.01); F04D 25/06 (2013.01); F04D 27/004 (2013.01); F05D 2220/40 (2013.01); F05D 2270/62 (2013.01)] | 10 Claims |
1. A method for controlling an electrically supported exhaust gas turbocharger, comprising the following steps:
ascertaining a monitored effective turbine area in a monitoring path for the electrically supported exhaust gas turbocharger;
ascertaining a planned effective turbine area in a planned controlling path;
ascertaining a correction signal for the electrically supported exhaust gas turbocharger as a function of a difference between the planned effective turbine area and the monitored effective turbine area;
(i) controlling an actuator as a function of the planned effective turbine area, and/or (ii) activating an electric machine for controlling the electrically supported exhaust gas turbocharger, for a supporting operation corresponding to a boost mode of the electrically supported exhaust gas turbocharger;
taking a mechanical driving power from an exhaust gas turbine until the taking of the mechanical driving power is restricted by component protection limits;
for a recuperative operation of the electrically supported exhaust gas turbocharger, determining a difference between a maximally possible turbine power and a planned compressor power by taking into account the component protection limits;
restricting a maximally possible extracted recuperative power for obtaining electrical energy to the difference between the maximally possible turbine power and the planned compressor power; and
ascertaining the maximally possible turbine power as a function of a minimal turbine area and/or an exhaust gas back pressure and/or an exhaust gas mass flow.
|