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US 10,961,900 B2Granted
Compressor bypass flow arrangement
AssigneeCummins Inc.
InventorsDavid Guillermo Gonzalez Medina, Alan C. Anderson, Matthew Keith Sease, David P. Richter, Rahul Bhardwaj
Life of this patent
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Abstract
Methods and devices are disclosed for introducing a compressor bypass flow that is returned from location that is downstream of a pressure source of an internal combustion engine to an air filter housing that is located upstream of the pressure source.
Claims18
A method, comprising:
- receiving a fresh airflow in a flow passage into an air filter housing upstream of an internal combustion engine;
- receiving a compressor bypass flow into the air filter housing;
- delivering the fresh airflow and the compressor bypass flow from the air filter housing to a first air-fuel mixer and a second air-fuel mixer;
- introducing a fuel into each of the first and second air-fuel mixers to combine with the fresh air flow and the compressor bypass flow to provide a first charge flow and a second charge flow;
- and
- pressurizing the first charge flow and the second charge flow downstream of the first air-fuel mixer and the second air-fuel mixer with respective ones of first and second compressors of first and second turbochargers, wherein the compressor bypass flow is a returned portion of the pressurized first and second charge flows.
3 more elements
A system, comprising:
- at least one pressure source including an inlet and an outlet, the at least one pressure source operable to pressurize a charge flow received by the pressure source through the inlet and to provide the pressurized portion of the charge flow to the outlet;
- an air filter housing including at least one air filter housed therein, the air filter housing including at least one outlet, the at least one outlet connected to the inlet of the at least one pressure source, the air filter housing including:
- a first inlet for receiving a fresh airflow;
- and
- a second inlet for receiving a compressor bypass flow that is returned from a location downstream of the at least one pressure source, wherein the fresh airflow and compressor bypass flow combine in the air filter housing and are provided to the at least one pressure source through the at least one outlet;
- wherein the at least one outlet of the air filter housing includes a first outlet and a second outlet, and the at least one pressure source includes a first turbocharger and a second turbocharger, and each of the first and second turbochargers is connected to a respective one of the first and second outlets.
3 more elements
An air filter assembly, comprising:
- an air filter housing including at least one air filter housed therein, the air filter housing including at least one outlet, the at least one outlet connected to an inlet of a pressure source that is operable to pressurize a charge flow to an internal combustion engine, the air filter housing including:
- a first inlet for receiving a fresh airflow;
- and
- a second inlet for receiving a compressor bypass flow that is returned from a location downstream of the at least one pressure source, wherein the fresh airflow and compressor bypass flow combine in the air filter housing and are passed through the at least one outlet to the pressure source, wherein the at least one outlet of the air filter housing includes a first outlet and a second outlet connectable to respective ones of a first fuel mixer connectable to a first turbocharger and a second fuel mixer connectable to a second turbocharger, and the second inlet of the air filter housing is connected to a bypass line that extends to a location between a charge air cooler that receives compressed charge flow from the first and second turbochargers and an intake throttle.
1 more element
Dependencies are inferred from the claim text.