Supercharged air duct for providing supercharged air to an internal combustion engine
AssigneeDr. Ing. h.c. F. Porsche Aktiengesellschaft
InventorWerner Verdoorn
Life of this patent
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Abstract
A supercharged air duct for providing supercharged air to an internal combustion engine. The air duct includes at least the following components in the stated order along the flow direction: a compressor turbine of a turbocharger; an intercooler for cooling compressed supercharged air of the compressor turbine; a Ranque-Hilsch cyclone tube having an inflow outlet and having a return flow outlet; and a return throttle for the return flow of the Ranque-Hilsch cyclone tube. During operation, an inflow further cooled from the cooled supercharged air flows out via the inflow outlet for a combustion chamber of the internal combustion engine and a heated return flow flows out via the return flow outlet.
Claims10
A supercharged air duct for providing supercharged air to an internal combustion engine, said supercharged air duct comprising:
- a compressor turbine of a turbocharger;
- an intercooler for cooling compressed supercharged air produced by the compressor turbine;
- a Ranque-Hilsch cyclone tube having an inflow outlet and a return flow outlet, wherein, during operation, an inflow further cooled from the cooled supercharged air flows out via the inflow outlet towards a combustion chamber of the internal combustion engine and a return flow flows out via the return flow outlet;
- and
- a return throttle for the heated return flow of the Ranque-Hilsch cyclone tube.
A method for cooling supercharged air for an internal combustion engine using a supercharged air duct, the supercharged air duct comprising a compressor turbine of a turbocharger;
- an intercooler for cooling compressed supercharged air of the compressor turbine;
- a Ranque-Hilsch cyclone tube having an inflow outlet and a return flow outlet, wherein, during operation, an inflow further cooled from the cooled supercharged air flows out via the inflow outlet towards a combustion chamber of the internal combustion engine and a return flow flows out via the return flow outlet;
- and a return throttle for the heated return flow of the Ranque-Hilsch cyclone tube, wherein the method comprises at least the following steps in the following order:
- a. compressing the supercharged air to over 3 bar using the compressor turbine;
- b. pre-cooling the compressed supercharged air to between 80° C. and 30° C. using the intercooler;
- and
- c. using the Ranque-Hilsch cyclone tube to cool the pre-cooled supercharged air to a target temperature of below 20° C. and relieving to a target charge pressure of 3 bar or less,
- wherein the cooling of the supercharged air to a desired target temperature is controlled by adjusting the return flow from the Ranque-Hilsch cyclone tube of the return throttle,
- wherein a flow volume of the return flow is less than a flow volume of an inflow.
Dependencies are inferred from the claim text.