Improved regulation of air intake temperature and recirculated exhaust gas temperature, uses control of entry of exhaust gas and a controlled bypass to control heat exchange between exhaust gas, intermediate fluid and intake air

摘要

The regulation system has a principal device (30) exchanging heat between a fluid and intake air and between the fluid and the recirculated exhaust gas. A bypass (44) round the heat exchanger (30) carries a mixture of intake air and recirculated exhaust gas round the heat exchanger. Valves (50,52) control the proportion of exhaust entering the heat exchanger. A valve (54) controls bypass flow.