Patent ID: 6102012
Filing Date: 2000-08-15
Classification: F02M,Y02T

Abstract:
An air heater for an air cleaner comprising an air cleaner case, an air cleaner element dividing the interior of the air cleaner case into a dust chamber on an upstream side with respect to the flowing direction of intake air and a clean chamber on a downstream side with respect to the flowing direction of intake air, the clean chamber having an outlet pipe, and an intake duct connected to the air outlet pipe, said intake duct having a throttle valve, said air heater comprising:a heat exchanger case covering an opening formed in the air cleaner case so as to open into the dust chamber, and forming a heating passage for heating intake air;a heat exchanger, through which cooling water for cooling an internal combustion engine is circulated, disposed in the heating passage defined by the heat exchanger case opposite to part of the opening opening into the dust chamber;a passage selector plate for selectively opening either the heating passage passing the heat exchanger or a bypass passage bypassing the heat exchanger; anda thermosensitive driving means provided with a temperature sensor for sensing temperature of intake air and capable of controlling the passage selector plate.