Oil heating and charge cooling of a turbocharged internal combustion engine

摘要

A turbocharged internal com­bustion engine 10 comprising a lubricating circuit 60, an intake line 20, a compressor 42 located in the intake line 20, and a heat exchanger 70 arranged for exchanging heat between a lubricat­ing fluid flowing in the lubricating circuit 60 and a charge air flowing in the intake line 20 downstream of the compressor 42. The engine may also comprise an intercooler or charge air cooler 50 positioned downstream of the compressor 42 and in series or parallel with the heat exchanger 70, and having a bypass conduit and/or hydraulic apparatus 80 for channelling the charge air towards the air cooler 50 or heat exchanger 70. The invention is intended to quicken the warm-up of the lubricating fluid, achieving a better oil viscosity, and to enhance the cooling of the charge air and improve the engineâ s volumetric efficiency.