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Turbocharging Device and Control Method for Controlling the Turbocharging Device

  • US 20080053091A1
  • Filed: 02/16/2005
  • Published: 03/06/2008
  • Est. Priority Date: 02/16/2005
  • Status: Abandoned Application
First Claim
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1. A method for controlling an electrically assisted turbocharger (1;

  • 20;

    30;

    40;

    50) comprising a compressor assembly (3) having a compressor wheel for compressing a fluid to an engine (7);

    a turbine assembly (2) having a turbine wheel driven by an exhaust gas of the engine and driving the compressor wheel; and

    an electric motor (4) for electrically driving the compressor wheel, wherein at least the turbine assembly (2) comprises a variation means (10;

    21) for varying an operational condition of the turbine assembly (2);

    the method comprising the steps of judging that the actual operational condition of the engine (7) requires electrical driving of the compressor wheel;

    controlling said variation means (10;

    21) in accordance with a rotational speed of the engine (7), and operating the electric motor (4) to drive the compressor wheel in accordance with a target operational condition of the engine (7).

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