Patent ID: 8863717
Filing Date: 2014-10-21
Classification: F02M,F05C

Abstract:
1. An intake device of an internal combustion engine, the intake device comprising: a primary intake line for aspirating primary combustion air; a secondary intake line for aspirating secondary combustion air; an air filter housing comprising a primary inlet chamber and a secondary inlet chamber and having an exterior; wherein said primary intake line opens into said primary inlet chamber; wherein a secondary intake port is arranged exterior to the filter housing and remotely from the filter housing and positioned in an engine compartment at a location to access heated secondary combustion air aspirated through said secondary intake port having a temperature of greater than 0 degrees Celsius that is sufficient to prevent loading of said secondary intake line with snow or ice; wherein the secondary intake port is connected to the secondary inlet chamber by the secondary intake line, wherein, in comparison to said primary intake line, said secondary intake line has a configuration such that, in normal operation of the internal combustion engine, a flow capacity of said secondary intake line in comparison to a flow capacity of said primary intake line is so minimal that said secondary combustion air taken in through said secondary intake line has a negligible effect on the performance of the internal combustion engine; wherein the secondary line has cross section that is sized and configured such that in normal operation the secondary intake line contributes less than 5% of the total mass air flow delivered to the engine; wherein due to the minimal flow configuration, the secondary intake line does not include a valve and is continuously open providing airflow to the secondary inlet chamber; wherein, when said primary intake line is closed, said flow capacity of said secondary intake line suffices to supply the internal combustion engine with a minimum combustion air mass flow required for operating the internal combustion engine.