Twin flow supercharged engine
AssigneeFord Global Technologies, LLC
InventorsVanco Smiljanovski, Norbert Schorn, Helmut Kindl, Uwe Spaeder, Rob Stalman, Franz Brinkmann
Life of this patent
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Abstract
Systems and methods for operating a twin flow supercharged engine are provided. The exhaust lines of engine cylinders are grouped into separate manifolds connected to respective inlet ducts of the twin-flow turbine. The inlet ducts of the twin-flow turbine are of different sizes, with different-sized cross sections and/or different-sized exhaust-gas volumes. The exhaust line of a manifold with a smaller exhaust-gas volume is connected to the larger inlet duct, and the exhaust line of a manifold with the larger exhaust-gas volume is connected to the smaller inlet duct.
Claims8
A supercharged internal combustion engine comprising:
- at least one cylinder head with at least four cylinders, each of which has at least one outlet opening which is adjoined by an exhaust line for discharging exhaust gases out of the cylinder, the at least four cylinders being configured in such a way as to form two groups, each group with at least two cylinders, the exhaust lines of only the cylinders of a first cylinder group merging to form a first overall exhaust line, the exhaust lines of the first cylinder group and the first overall exhaust line forming a first exhaust manifold, the exhaust lines of only the cylinders of a second cylinder group merging to form a second overall exhaust line, the exhaust lines of the second cylinder group and the second overall exhaust line forming a second exhaust manifold, the first exhaust manifold having a different-sized exhaust gas volume than the second exhaust manifold;
- and
- at least one twin-flow turbine which has an inlet region with a first and a second inlet ducts, wherein the first overall exhaust line opens out into the first inlet duct and the second overall exhaust line opens out into the second inlet duct,
- wherein the inlet ducts of the twin-flow turbine are of different sizes, with different-sized cross sections and/or different-sized exhaust-gas volumes, and
- wherein the overall exhaust line of the exhaust manifold with a smaller exhaust-gas volume is connected to a larger inlet duct, and the overall exhaust line of the exhaust manifold with a larger exhaust-gas volume is connected to a smaller inlet duct.
An engine, comprising:
- two inner cylinders between two outer cylinders inline;
- a first manifold coupled to only the outer cylinders;
- a second manifold coupled to only the inner cylinders, a volume of the second manifold less than the first manifold;
- and
- a twin-flow turbine including a first duct coupled to the first manifold and a second duct coupled to the second manifold, a cross-section of the first duct being smaller than the second duct.
An engine, comprising:
- two inner cylinders between two outer cylinders inline;
- a first manifold coupled to only the outer cylinders;
- a second manifold coupled to only the inner cylinders, a volume of the second manifold less than the first manifold;
- and
- a twin-flow turbine including a first duct coupled to the first manifold and a second duct coupled to the second manifold, a gas volume of the first duct being smaller than the second duct.
Dependencies are inferred from the claim text.