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US 2019/0203680 A1Published application
Charge flow introducer
AssigneeCummins Inc.
InventorsSandesh R. Patil, Joshua Bradley Bettis, Yogesh Jagannath Patil
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Abstract
Methods and devices are disclosed for introducing a fresh airflow, crankcase ventilation gases, fuel, and charge bypass flow upstream of a pressure source of an internal combustion engine.
Claims27
A method, comprising:
- receiving a fresh airflow in a flow passage of an introducer upstream of an intake of an internal combustion engine system;
- receiving crankcase ventilation gases from the internal combustion engine into the flow passage of the introducer;
- receiving a fuel flow into the flow passage of the introducer;
- receiving a charge bypass flow into the flow passage of the introducer;
- delivering the fresh airflow, the crankcase ventilation gases, the fuel flow, and the charge bypass flow from the introducer to provide a charge flow;
- and
- pressurizing the charge flow downstream of the introducer, wherein the charge bypass flow is a returned portion of the pressurized charge flow.
4 more elements
A system, comprising:
- a pressure source including an inlet and an outlet, the pressure source operable to pressurize at least a portion of a charge flow received by the pressure source through the inlet and to provide the pressurized portion of the charge flow to the outlet;
- and
- an introducer mounted upstream of the inlet that includes a flow passage for receiving a fresh airflow, the introducer including:
- a first inlet for receiving crankcase ventilation gases from an internal combustion engine and providing the crankcase ventilation gases into the flow passage of the introducer;
- a second inlet for receiving a fuel flow and providing the fuel flow into the flow passage of the introducer;
- a third inlet for receiving a charge bypass flow and providing the charge bypass flow into the flow passage of the introducer, wherein the introducer is configured to deliver the fresh airflow, the crankcase ventilation gases, the fuel flow, and the charge bypass flow to provide the charge flow for pressurization by the pressure source.
3 more elements
An apparatus for introducing a charge flow upstream of an internal combustion engine, comprising:
- an introducer including an axial flow passage and a first inlet in flow communication with the axial flow passage to provide a flow of crankcase ventilation gases to the flow passage, the introducer further including a second inlet in flow communication with the flow passage to provide a flow of fuel to the flow passage, and the introducer further including a third inlet in flow communication with the flow passage to provide a charge bypass flow to the flow passage.
Dependencies are inferred from the claim text.