Arrangement of a two stage turbocharger system for an internal combustion engine

Abstract

Arrangement of a two stage turbocharger system (10) for an internal combustion engine comprising an intake manifold (14) and an exhaust manifold (15), comprising a low-pressure turbocharger (17), a high-pressure turbocharger (16) and a bypass duct (27) in flow communication with an outlet (22) of the low-pressure compressor (19), an inlet (25) of the high-pressure compressor (24), an outlet (26) of the high-pressure compressor (24) and an inlet of the intake manifold (14). The bypass duct (27) comprises a first bypass valve (28) for opening and closing the bypass duct. The first bypass valve (28) and the high-pressure compressor (24) are accommodated within a common housing (29).

Description

technical field [0001] The invention relates to a two-stage turbocharger system arrangement for an internal combustion engine. Background technique [0002] A two-stage turbocharger system typically consists of a small high-pressure turbocharger and a larger low-pressure turbocharger. Two-stage turbocharger systems are used in automotive internal combustion engines to improve engine performance, for example, to generate more torque at low speeds or to reduce turbo lag. [0003] Two-stage turbocharger systems for internal combustion engines are usually driven by exhaust gases. Various configurations of two-stage turbocharger systems and various methods of operating two-stage turbocharger systems are known, for example as disclosed in US 4,930,315 and US 6,981,375. [0004] In order to reduce exhaust emissions, especially from vehicles, to meet increasingly stringent environmental standards, particulate filters and / or oxidation catalysts may be provided in fluid communicatio...

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Problems solved by technology

But a car with such an engine would suffer from an undesired drop in performance and heat loss when the particulate filter regenerates

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