Internal combustion engine with exhaust-gas turbocharging arrangement
AssigneeFord Global Technologies, LLC
InventorsHelmut Matthias Kindl, Hanno Friederichs, Joerg Kemmerling, Vanco Smiljanovski, Andreas Kuske, Franz Arnd Sommerhoff
Life of this patent
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Abstract
Systems and methods for operating an engine that includes a cavity in an exhaust manifold of a turbocharged engine are described. The systems and methods may improve engine efficiency and provide a way of controlling temperatures of engine exhaust components. The cavity may be located between an exterior wall of the exhaust manifold and an interior wall of the exhaust manifold.
Claims20
A supercharged internal combustion engine having at least two cylinders, having an intake system for the supply of charge air, and having an exhaust-gas discharge system for the discharge of exhaust gas, and having at least one exhaust-gas turbocharger which comprises a turbine arranged in the exhaust-gas discharge system and a compressor arranged in the intake system, in which each cylinder has at least one outlet opening for the discharge of the exhaust gases via the exhaust-gas discharge system, and each outlet opening is adjoined by an exhaust line, the exhaust lines of at least two cylinders merging to form an overall exhaust line, thus forming an exhaust manifold, and the turbine, which comprises a turbine housing, of the at least one exhaust-gas turbocharger is a wastegate turbine, wherein the exhaust-gas discharge system is equipped at least in regions with at least one cavity which can be used as thermal insulation, the at least one cavity forming a bypass which is at least connectable to the exhaust-gas discharge system upstream and downstream of the wastegate turbine and which is equipped with at least one shut-off element.
An internal combustion engine, comprising:
- a cylinder block;
- an exhaust manifold including a first cavity located between an exterior wall of the exhaust manifold and an interior wall of the exhaust manifold;
- and
- a turbocharger coupled to the exhaust manifold and including a second cavity to bypass a turbine of the turbocharger, the first cavity in pneumatic communication with the second cavity.
An engine operating method, comprising:
- adjusting a state of a bypass valve to open or close a cavity in an engine exhaust manifold via a controller in response to an operating condition of an engine, the cavity located between an exhaust manifold exterior wall and an exhaust manifold interior wall.
Dependencies are inferred from the claim text.