Charged internal combustion engine and method to operate such an engine

Abstract

A supercharged internal combustion engine having at least two exhaust-gas turbochargers is provided. The engine includes a first exhaust manifold and a second exhaust manifold which are permanently connected to one another upstream of the two turbines of the turbochargers via at least one connecting duct which cannot be closed off. In this way, overflow of exhaust from the one exhaust manifold may be transferred to the other exhaust manifold.

Description

[0001] related application [0002] This application claims priority from European Patent Application No. 11159786.0 filed on March 25, 2011, the entire content of which is hereby incorporated by reference for all purposes. technical field [0003] The present disclosure relates to a supercharged internal combustion engine having at least two exhaust-gas turbochargers. Background technique [0004] An internal combustion engine has a cylinder block and at least one cylinder head interconnected to form cylinders. In order to control the charge exchange, an internal combustion engine requires control elements, usually in the form of valves, and actuating means for activating said control elements. The valve actuation mechanism required for valve movement (including the valve itself) is referred to as the valve actuation. A cylinder head is typically used to house the valve drive mechanism. [0005] During charge exchange, the combustion gases are expelled via the cylinder o...

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Problems solved by technology

[0013] The inventors have recognized the problems with the above-described approaches and provide herein a system that at least partially addresses them

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