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Twin scroll turbocharger device with bypass

A turbocharger and vortex technology, applied in the direction of machines/engines, stators, engine components, etc., can solve problems such as leakage, increased resistance, and decreased efficiency of internal combustion engines, so as to offset compressor surge and increase energy utilization. , the effect of increasing the overall internal combustion engine efficiency

Active Publication Date: 2016-04-06
VOLVO CAR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, simultaneously closing one scroll leads to a decrease in the efficiency of the internal combustion engine due to the increased resistance to the exhaust as it enters the partially closed turbine inlet
Another drawback is that due to the lower pressure of the closed scroll there will be some leakage from the open high pressure scroll to the low pressure scroll where the scrolls merge

Method used

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  • Twin scroll turbocharger device with bypass
  • Twin scroll turbocharger device with bypass
  • Twin scroll turbocharger device with bypass

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Embodiment Construction

[0091] figure 1 An exemplary engine arrangement 1 comprising an internal combustion engine 3 provided with an exemplary twin-scroll turbocharger arrangement 2 according to the invention is disclosed. The internal combustion engine 3 comprises an exhaust manifold 4 and an intake manifold 5, wherein exhaust gas from the internal combustion engine 3 is expelled from the exhaust manifold into a turbine inlet 6 via one or more ducts 6a. The exhaust gas drives the turbine wheel 7 a of the turbine 7 of the twin-scroll turbocharger arrangement 2 and is then discharged through the turbine outlet 8 . The turbine wheel 7 a is connected to a compressor wheel 9 a of the compressor 9 via a shaft 19 . The twin-scroll turbocharger device 2 is enclosed by a turbocharger casing 18 .

[0092] The compressor is supplied with compressor gas, preferably ambient air, from the compressor inlet 10 . The compressed gas is compressed within the compressor 9 and then discharged from the compressor 9 t...

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Abstract

A twin scroll turbocharger device for an internal combustion engine comprising a turbine and a compressor wherein the turbine comprises a first turbine scroll and a second turbine scroll, and wherein at least said first turbine scrolls is provided with a turbine scroll inlet valve such that the exhaust gas flow through the first turbine scroll is controllable. The twin scroll turbocharger device is further characterized in that a bypass conduit is provided between a compressor and at least the first turbine scroll. The bypass conduit is provided with a bypass conduit valve such that a flow through said bypass conduit is controllable.

Description

technical field [0001] The present invention relates to a twin scroll turbocharger arrangement for an internal combustion engine (ICE). Such an internal combustion engine may be configured in any type of vehicle suitable for spark ignition or compression ignition engine drive. Background technique [0002] Conventional turbochargers for internal combustion engines are generally most efficient when operating under certain operating conditions. For example, the configuration of the turbine wheel, compressor wheel, and turbine scroll all affect the characteristics of the turbocharger and determine under what operating conditions the turbocharger is as efficient as possible. When the exhaust flow from the internal combustion engine is low, such as when running the engine at low rpm or when the generator load is low, it is generally preferred to have a smaller turbocharger, while at higher exhaust flows it is generally preferred to have Bigger turbo. In order to obtain a turbo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B37/18
CPCF01D9/026F01D17/146F02B37/025F02B37/168F02B37/225F02B2037/125F05D2220/40Y02T10/12F02B37/18
Inventor G·阿尔姆奎斯特
Owner VOLVO CAR CORP
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