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Title: Engine and fuel cell system including first and second turbochargers

Patent ·
OSTI ID:1986963

An engine system includes an internal combustion engine, a fuel cell system, a first turbocharger and a second turbocharger. The internal combustion engine has an intake passage, and a first exhaust passage fluidly connected to the first set of combustion chambers. The first turbocharger has a first compressor and a first turbine. The second turbocharger has a second compressor and a second turbine, the second compressor connected in series with the first compressor, and the second turbine being in fluid communication with the second exhaust passage. The first and second turbines are connected in parallel such that the first turbine only receives exhaust flow from the fuel cell system, and the second turbine only receives exhaust flow from the internal combustion engine.

Research Organization:
Caterpillar Inc., Deerfield, IL (United States)
Sponsoring Organization:
USDOE Advanced Research Projects Agency - Energy (ARPA-E)
DOE Contract Number:
850K474; AR0000953
Assignee:
Caterpillar Inc. (Peoria, IL)
Patent Number(s):
11,536,191
Application Number:
17/333,769
OSTI ID:
1986963
Resource Relation:
Patent File Date: 05/28/2021
Country of Publication:
United States
Language:
English

References (20)

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Exhaust system having parallel asymmetric turbochargers and EGR patent October 2012
Method and system for influencing the quantity of exhaust gas recirculated in a pressure charged internal combustion engine patent-application May 2006
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High Efficiency Solid Oxide Fuel Cell - Internal Combustion Engine Hybrid Power System patent-application January 2020
Power generation system and method patent May 2001
Power Units, Including Reciprocating Internal Combustion Engines and Turbo Compressors Utilizing Exhaust Gases from Such Engines patent February 1957
Two-stage supercharging internal combustion engine having an exhaust-gas aftertreatment arrangement, and method for operating a two-stage supercharged internal combustion engine patent October 2018
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Power Generation System and Method for Activating Fuel Cell in Power Generation System patent-application July 2018
Systems and Methods for an Engine with a Two-Stage Turbocharger patent-application February 2013
Series/parallel turbochargers and switchable high/low pressure EGR for internal combustion engines patent January 2007
Centrifugal Flow Gas Turbine patent December 1971
Two-turbocharger engine and method patent-application August 2006

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