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Turbocharger and air induction system incorporating the same and method of making and using the same

A turbocharger and turbine technology, applied in the direction of charging system, fuel air intake, exhaust gas recirculation, etc., can solve the problem that the increase of EGR flow cannot be realized

Inactive Publication Date: 2011-04-20
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Further, the increase in back pressure caused by closing the turbine vanes of the variable nozzle is substantially outweighed by the resulting increase in intake air boost such that the desired increase in EGR flow into the intake system cannot be achieved

Method used

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  • Turbocharger and air induction system incorporating the same and method of making and using the same
  • Turbocharger and air induction system incorporating the same and method of making and using the same
  • Turbocharger and air induction system incorporating the same and method of making and using the same

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Embodiment Construction

[0048] The present invention discloses exemplary embodiments of a turbine housing, an exemplary embodiment of a turbocharger including a turbine housing and an air intake system for an internal combustion engine, and related methods of use, which enhance the availability of air EGR into the intake system while simultaneously providing sufficient exhaust flow to drive the turbo and generate the desired boost and intake air flow into the intake system, regardless of whether the turbocharger uses a fixed or variable nozzle turbine.

[0049] The present invention includes a turbine housing having a wastegate-like conduit or passage that directly bypasses or shunts a portion of the exhaust energy from the turbine and reduces turbine stages. Effective efficiency, which thus reduces the boost pressure of the intake air flow available from the compressor and allows the EGR flow pressure to be higher than the intake air flow pressure, thereby propelling the EGR flow into the intake air ...

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PUM

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Abstract

A turbocharger for an internal combustion engine includes a turbine comprising a turbine wheel attached to a turbine shaft, the turbine wheel and shaft rotatably disposed in a turbine housing, the turbine housing comprising a turbine volute conduit, the turbine volute conduit having a turbine volute inlet and an EGR conduit inlet, the EGR conduit inlet radially spaced from the turbine volute inlet along the turbine volute conduit and opening into an EGR conduit that is joined to the turbine volute conduit. The turbine volute inlet is configured for fluid communication of an exhaust gas received from an engine to the turbine wheel, the EGR conduit configured for fluid communication of the exhaust gas to an engine intake conduit. The turbocharger also includes a compressor comprising a compressor wheel attached to the turbine shaft, the compressor wheel and turbine shaft rotatably disposed in compressor housing.

Description

technical field [0001] Exemplary embodiments of the present invention relate to turbine housings and turbochargers including the same, and methods of using the same, and more particularly to having integrated wastegate / exhaust gas recirculation A turbine housing for an (EGR) outlet, a turbocharger including the turbine housing, and a method of using the turbine housing. Background technique [0002] The efficient use of exhaust gas recirculation (EGR) is very important to all modern internal combustion engines, both diesel and gasoline. Efficient use of EGR generally helps to achieve high power output from these engines while also achieving high fuel efficiency and economy and meeting the goals of increasingly stringent engine emissions requirements. Forced induction (notably including turbochargers) is also commonly used in these engines for increasing engine intake airflow mass and engine power output. However, turbochargers are also driven by the exhaust, so the efficie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B37/18F02M25/07F02C6/12F02M35/10
CPCF02M25/0728F02B29/04F02M25/0709F02B37/24Y02T10/121Y02T10/144F02M26/06F02M26/25Y02T10/12
Inventor C·E·威廉斯R·M·特卡克
Owner GM GLOBAL TECH OPERATIONS LLC