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System and method for mode transition for a two-stage series sequential turbocharger

A turbocharging system, turbocharger technology, applied in the direction of machines/engines, electrical control, mechanical equipment, etc., can solve repetitive, non-optimal and other problems

Inactive Publication Date: 2010-12-01
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, if one of the subsystems is changed, the entire calibration will have to be repeated
Furthermore, due to component tolerances, the calibration may not be optimal due to component tolerances, aging and other unforeseen conditions

Method used

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  • System and method for mode transition for a two-stage series sequential turbocharger

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Embodiment Construction

[0055] The following description is merely exemplary in nature and is in no way intended to limit the invention, application or use. For purposes of clarity, the same reference numbers have been used in the drawings to identify similar elements. As used herein, the phrase at least one of A, B, and C should be construed as a logical (A or B or C) using a non-exclusive logical or. It should be understood that steps within a method may be executed in different order without altering the principles of the present invention.

[0056] As used herein, the term module refers to an application-specific integrated circuit (ASIC), an electronic circuit, a processor (shared, dedicated, or grouped) and memory, a combinational logic circuit that executes one or more software programs or firmware programs , and / or other suitable components that provide the described functionality.

[0057] now refer to figure 1 , engine 10 includes a cylinder block 12 having various numbers of cylinders, ...

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Abstract

The invention relates to a system and method for mode transition for a two-stage series sequential turbocharger. A method of controlling a series turbocharger for an engine and a control system for the same includes a boost determination module determining a first predicted boost pressure for a first position of a variable geometry turbine when a high pressure turbine bypass valve is in an open position. The boost determination module determines a second boost pressure for a second position of the variable geometry when the high pressure turbine bypass valve is in the open position. A desiredboost module determines a desired boost. A comparison module determines when the desired boost signal is between the first predicted boost pressure and the second predicted boost pressure. A bypass valve control module closes the high pressure turbine bypass valve when the desired boost signal is between the first predicted boost pressure and the second predicted boost pressure.

Description

technical field [0001] The present invention relates to internal combustion engines, and more particularly, to systems and methods for controlling sequential two-stage turbochargers of internal combustion engines. Background technique [0002] The background art provided herein is for the purpose of generally presenting the context of the disclosure. The work of the presently named inventors, to the extent described in this Background section, and aspects of this description that are otherwise insufficient to be prior art at the time of filing, are neither expressly nor impliedly admitted to be relevant to The present invention conflicts with the prior art. [0003] Increasing fuel economy is a desired goal of automakers. Consumers desire high fuel economy without sacrificing performance. While reducing the vehicle's overall fuel economy because a smaller displacement engine can be used, turbocharging provides a way to increase performance during demanding conditions. ...

Claims

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Application Information

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IPC IPC(8): F02D23/00F02B37/24F02B37/013F02B37/16F02D41/00
CPCF02B37/18F02B37/004F02D23/00F02D2200/0408F01N13/107F02B37/22Y02T10/144F02B37/127F02B37/013F02D2200/0406F02D41/0007F02D41/1447F02B37/162Y02T10/12
Inventor Z·刘P·葛A·甘戈帕迪亚伊
Owner GM GLOBAL TECH OPERATIONS LLC
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