| 摘要 |
A turbocharger system for an engine comprises at least a small and a large compressor arranged in series, at least a small and a large turbine arranged in parallel and a shut-off arrangement adapted to interrupt exhaust gas flow through at least one of the small and the large turbine. Further, a method for controlling a turbocharger system for an engine having a large turbocharger with a large turbine and a small turbocharger with a small turbine comprises the steps switching off an exhaust gas flow through the large turbine and switching on an exhaust gas flow through the small turbine in a low engine speed range, switching on the exhaust gas flow through the large and small turbine in a medium engine speed range, and switching on the exhaust gas flow through the large turbine and switching off the exhaust gas flow through the small turbine in a high engine speed range.
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