Turbocharger control system and method for improving transient performance

Turbocharger control system and method for improving transient performance

  • CN 102,042,080 B
  • Filed: 10/22/2010
  • Issued: 04/26/2017
  • Est. Priority Date: 10/23/2009
  • Status: Active Grant
First Claim
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1. a kind of for high pressure turbocharger and the turbo-charger control system of low pressure turbocharger, the high-pressure turbineSupercharger includes variable geometry turbocharger, and the turbo-charger control system includes:

  • Turbo Mode determining module, it is determined from double turbo Modes to the conversion of single turbine pattern, wherein the high-pressure turbine increasesDepressor works under described pair of turbo Mode and does not then work under the single turbine pattern;

    Shift control module, it determines the expectation turbine efficiency of the high pressure turbocharger and controls in the transition periodThe high pressure turbocharger is keeping the expectation turbine efficiency;

    AndBypass valve control module;

    Bypass valve and through the high pressure turbocharger turbine volume flow rate by the turbo-charger control system comeControl, the volume flow rate by the high pressure turbocharger turbine variable inlet guide vane position determining;

    It is wherein described to expect that turbine efficiency is the predetermined turbine effect of the position based on the variable inlet guide vane and pressure ratioRate;

    Wherein described pressure ratio is the ratio of turbine inlet pressure and turbine outlet pressure;

    AndWherein described bypass valve control module opens the bypass valve when the pressure ratio exceedes threshold pressure ratio.

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