An air system for an internal combustion engine with improved cooling power electronics of an electric auxiliary compressor arrangement by reducing the heat flow of secondary heat sources

摘要

An air system (1) for an internal combustion engine with an auxiliary compressor arrangement, the air system (1) having an intake channel (2) which is adapted to supply air to a combustion chamber (3), an air collector (10), a pressure channel (3). 9), • an auxiliary compressor (4), which is adapted to suck in air via the air collector (10) from the intake duct (2) and to output compressed air into the pressure duct (9) again, • a bypass flap (8) arranged for this purpose Air from the intake duct (2) on the auxiliary compressor (4) over to lead directly into the pressure channel (9), • an electric motor (5), which drives the auxiliary compressor (4), • a power electronics (6), which set up is the electric motor (5) to control, • a support plate (7) on which the power electronics (6) is arranged, and which connects the power electronics (6) with the intake duct (2) thermally, • wherein the intake duct (2) serves as a heat sink, and • wherein the Ans Augkanal (2) has a connection region (21), in which the thermal connection of the support plate (7) with the intake passage (2) is formed, wherein a heat flow from the pressure channel (9) and / or the additional compressor (4) to the connection area (21) is inhibited by thermal insulation.