Engine ventilation in an automotive vehicle

A ventilation system for an engine in an automotive vehicle with a heat exchanger between said engine and a fresh-air intake from which cooling air can be conducted past said engine by way of a cold-air bypass channel, said ventilation system having a hot-air channel behind said heat exchanger, said hot-air channel being structurally separated from said cold-air bypass channel, said ventilation system provided with at least one valve for blocking hot-air from said hot-air channel.

A ventilation system for an engine in an automotive vehicle with a heat exchanger between said engine and a fresh-air intake from which cooling air can be conducted past said engine by way of a cold-air bypass channel around said heat exchanger, said ventilation system having a hot-air channel behind said heat exchanger, said hot-air channel being structurally separated from said cold-air bypass channel, said ventilation system is provided with an engine bay cooling-air channel formed by the engine hood itself and by a noise-absorbing cover of the engine hood said bay cooling-air channel communicating with said bypass channel.

A ventilation system for an engine in an automotive vehicle with a heat exchanger between said engine and a fresh-air intake nozzle from which cooling air can be conducted past said engine by way of a cold-air bypass channel around said heat exchanger, said ventilation system having a hot-air channel behind said heat exchanger, said hot-air channel being structurally separated from said cold-air bypass channel, wherein said heat exchanger and said fresh air intake is closed by a cover-hood which has at least one opening formed by said intake nozzle and defines atleast in part said bypass channel.