Patent ID: 8726890
Filing Date: 2014-05-20
Classification: F02M,Y02T

Abstract:
1. An intake air heating apparatus comprising: an intake air passage configured to connect a throttle valve to a cylinder head of a combustion engine; an air outlet unit formed in the intake air passage; an air inlet unit formed in the intake air passage at a position different from a position of the air outlet unit in a direction in which intake air flows; a circulation passage configured to allow the air outlet unit to communicate with the air inlet unit, the circulation passage being disposed downstream of the throttle valve in the direction in which the intake air flows; an air supply unit disposed in the circulation passage, the air supply unit delivering the air in the intake air passage from the air outlet unit to the air inlet unit; an air heating unit disposed in the circulation passage, the air heating unit heating the air flowing in the circulation passage; and a controller that drives the air supply unit and the air heating unit before the combustion engine is started.