Method and systems for reducing heat loss to a turbocharger during cold engine starting

Systems and methods for reducing heat loss to a turbocharger during cold engine starting are described. In one example, a turbocharger bypass pipe and a turbocharger turbine pipe are oriented at forty five degrees relative to a longitudinal axis of a catalyst so that a turbocharger turbine may be co...

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Hauptverfasser: Zhang, Xiaogang, Wooldridge, Steven, Host, Ray, Ruona, William Charles, Yi, Jianwen, Moilanen, Peter
Format: Patent
Sprache:eng
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Zusammenfassung:Systems and methods for reducing heat loss to a turbocharger during cold engine starting are described. In one example, a turbocharger bypass pipe and a turbocharger turbine pipe are oriented at forty five degrees relative to a longitudinal axis of a catalyst so that a turbocharger turbine may be completely bypassed, thereby increasing the amount of energy that may be transferred to the catalyst.