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Two-Stage Turbocharger System For Internal Combustion Engines Featuring Cylinder Deactivation

A turbocharger, turbocharged technology, applied in the direction of internal combustion piston engines, charging systems, combustion engines, etc., can solve problems such as inability to drive compressors

Active Publication Date: 2015-09-02
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compressors may be sized such that a single fixed geometry turbine cannot drive the compressor to meet performance requirements

Method used

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  • Two-Stage Turbocharger System For Internal Combustion Engines Featuring Cylinder Deactivation
  • Two-Stage Turbocharger System For Internal Combustion Engines Featuring Cylinder Deactivation
  • Two-Stage Turbocharger System For Internal Combustion Engines Featuring Cylinder Deactivation

Examples

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Embodiment Construction

[0017] Example embodiments will now be described more fully with reference to the accompanying drawings.

[0018] Example embodiments are provided so that this disclosure will be thorough, and will fully convey the scope to those who are skilled in the art. Numerous specific details are set forth, such as examples of specific components, devices and methods, to provide a thorough understanding of embodiments of the present disclosure. It will be apparent to those skilled in the art that specific details need not be employed, that example embodiments may be embodied in many different forms and that neither should be construed to limit the scope of the disclosure. In some example embodiments, well-known processes, well-known device structures, and well-known technologies are not described in detail.

[0019] The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a"...

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PUM

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Abstract

An internal combustion engine includes an engine defining a plurality of cylinders including full-time active cylinders and cylinders capable of being deactivated. A turbocharger system having a high pressure turbocharger in communication with the exhaust passages from the full-time active cylinders and a low pressure turbocharger in communication with the exhaust passages from the cylinders capable of being deactivated. A control valve is provided in communication with the exhaust passages from the full-time active cylinders and being operable in an open position to allow exhaust gases from the full-time active cylinders to pass through the second turbocharger along with the exhaust gasses from the cylinders capable of being deactivated, and being operable in a closed position to direct exhaust gases from the full-time active cylinders to pass through the first turbocharger.

Description

technical field [0001] The present invention relates to a two-stage turbocharger system for an internal combustion engine with a cylinder deactivation feature. Background technique [0002] This section provides background information related to the present disclosure which is not necessarily prior art. [0003] Current regulatory conditions in the automotive market lead to an increased demand for improved fuel economy and reduced emissions in current vehicles. These regulatory conditions must be balanced with consumers' demands for high performance and responsive vehicles. Cylinder deactivation is a technique often applied to naturally aspirated internal combustion engines to improve the efficiency of the engine under part load conditions by deactivating a selected number of cylinders so that the remaining cylinders operate with reduced pumping losses [see "Active Fuel Management Technology: Hardware Development on a 2007 GM 3.9L V-6 OHV SI Engine,” SAE Paper 2007-01-1292...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B37/007F02B37/12F02D17/02
CPCF02M25/0713F02B37/007F02B37/18F02B37/001F02B37/002F02B37/004F02D17/02F02D23/00F02M26/02Y02T10/12
Inventor K-J.吴A.W.海曼
Owner GM GLOBAL TECH OPERATIONS LLC