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Regulating method for a turbocharger of an internal combustion engine, and turbocharger

The technology of a turbocharger and an adjustment method is applied in the field of adjustment of turbochargers of internal combustion engines and turbochargers to achieve the effect of precise position adjustment

Inactive Publication Date: 2009-09-30
BORGWARNER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, in the control box there is a hysteresis effect in the stroke value of the actuating lever during pressure increase and during pressure decrease, which has a negative effect on the overall regulation characteristics

Method used

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  • Regulating method for a turbocharger of an internal combustion engine, and turbocharger
  • Regulating method for a turbocharger of an internal combustion engine, and turbocharger
  • Regulating method for a turbocharger of an internal combustion engine, and turbocharger

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Embodiment Construction

[0017] figure 1 A diagram is shown in which the pressure demand for supercharging, the actual supercharging pressure, engine load, engine speed and the position of the guide vanes of the VGT are plotted against time in order to illustrate a particularly preferred embodiment of the control method according to the invention implementation plan.

[0018] exist figure 1 The regulation strategy depicted in consists of three stages, of which stage 2 is optional, which means that it can also be omitted in some applications.

[0019] In Phase 1, it is seeking to increase the exhaust backpressure P3 (which is at figure 2 ), in order to improve the response characteristics. For this purpose, the guide vanes of the VTG are temporarily adjusted to the maximum closed state for the respective current operating point by having phase 1 active only for approximately 100 to 200 milliseconds (maximum 500 milliseconds). as from image 3 As can be seen in the schematic diagram, the control o...

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Abstract

The invention relates to a regulating method for a turbocharger (1) with a turbine (4) which has a variable turbine geometry (VTG) provided with adjustable guide blades (5), having the following method steps: a) closing the guide blades (5) of the variable turbine geometry (VTG), as a function of the present operating point of the internal combustion engine which is turbocharged by means of the turbocharged (1), to the maximum possible closing position of the guide blades (5) for said operating point, and b) regulating the charge pressure (P2) by adjusting the position of the guide blades (5) in a closed regulating loop.

Description

technical field [0001] The invention relates to a control method for an exhaust-gas turbocharger of an internal combustion engine according to the preamble of claim 1 and to a turbocharger according to the preamble of claim 6 . Background technique [0002] In known turbochargers with an adjustable turbine geometry (VTG), if the VTG is closed to an excessive degree by means of a conventional PID regulator and a pneumatic control box, increased A drop in pressure. Furthermore, in the control box there is a hysteresis effect in the stroke value of the actuating lever during pressure increase and during pressure decrease, which has a negative effect on the overall regulation behavior. Contents of the invention [0003] It is therefore an object of the present invention to create a regulation method of the type specified in the preamble of claim 1, and a turbocharger according to the preamble of claim 6, by which it is possible to at least The hysteresis effect of the contro...

Claims

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Application Information

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IPC IPC(8): F02B37/24F02D23/00F02C9/22
CPCF02D23/02F02C9/22F02D41/0007F05D2220/40F05B2220/40F02B37/24Y02T10/144Y02T10/12F02B37/12F02B37/22F02D23/00
Inventor V·穆勒R·克里斯特曼G·斯平纳
Owner BORGWARNER INC
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