Engine and fuel cell system including first and second turbochargers
AssigneeCaterpillar Inc.
InventorChristopher Lusardi
Life of this patent
Estimating the term…
Abstract
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.
Claims20
An engine system, comprising:
- an internal combustion engine having an engine intake passage and a first exhaust passage;
- a fuel cell system having a fuel cell air intake passage and a second exhaust passage;
- a first turbocharger including a first compressor and a first turbine, the first compressor being in fluid communication with the engine intake passage, and the first turbine being in fluid communication with the second exhaust passage;
- a second turbocharger including 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 first exhaust passage;
- and
- a third turbine configured to receive a flow of fuel from the fuel cell system,
- the first and second turbines being 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.
An engine system, comprising:
- an internal combustion engine having an engine intake passage and a first exhaust passage;
- a fuel cell system having a fuel cell air intake passage and a second exhaust passage;
- a first turbocharger including a first compressor and a first turbine, the first compressor being in fluid communication with the engine intake passage, and the first turbine being in fluid communication with the second exhaust passage;
- a second turbocharger including 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 first exhaust passage;
- and
- a third turbine configured to receive a flow of fuel from a passage connecting the fuel cell system and the internal combustion engine,
- the first and second turbines being 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.
An engine system, comprising:
- an internal combustion engine having an engine intake passage and a first exhaust passage;
- a fuel cell system having a fuel cell air intake passage and a second exhaust passage;
- a first turbocharger including a first compressor and a first turbine, the first compressor being in fluid communication with the engine intake passage, and the first turbine being in fluid communication with the second exhaust passage;
- a second turbocharger including 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 first exhaust passage;
- and
- a third turbine configured to receive a flow of fuel from the fuel cell system,
- the first and second turbines being connected in parallel such that the first turbine receives exhaust flow from the fuel cell system, and the second turbine receives exhaust flow from the internal combustion engine.
Dependencies are inferred from the claim text.