Abstract: It is aimed to provide an internal combustion engine (10) comprising: an exhaust line (13) configured to receive exhaust gas from the internal combustion engine (10). An intake line (12) is configured to supply pressurized air from an air intake to the internal combustion engine. A heater (20) is disposed adjacent the exhaust line (13) to generate heat that is transported via the exhaust line to an exhaust aftertreatment system (30). A bypass line (11) controllably connects the intake line to the exhaust line to bypass the engine An electric flow generator (40) is arranged in the intake line and/or bypass line between the air intake and the inlet opening to supply intake air to the exhaust line; and a control system is arranged to selectively control the bypass line (11) to provide pressurized intake air from the electric flow generator, via the inlet opening (17) to supply intake air to the exhaust line for transporting heat generated by the heater towards the aftertreatment system.

Abstract: A duct is provided for interconnecting separate stages of a compressor or a compressor and an intercooler of an internal combustion engine. The duct comprises a lumen for conveying compressed air and at least one channel for a cooling liquid, which channel at least partially surrounds the lumen and/or extends inside the lumen. The duct enables effective cooling of compressed air e.g. from 260° C. to 220° C. at a relatively low pressure drop, thus increasing service life of downstream equipment, in particular a downstream intercooler.