Exhaust gas-turbocharged internal combustion engine comprising a radial compressor with guide device arranged in the diffuser, and method for operating an internal combustion engine of said type

摘要

Methods and systems are provided for an adjustable diffuser of a turbocharger compressor. In one example, a compressor includes a diffuser formed in a compressor housing downstream of an impeller of the compressor, the diffuser including guide blades mounted on a rotatable annular support of the diffuser. Further, an engine controller may adjust rotation of the annular support based on one or more engine operating conditions.