Patent ID: 6945323
Filing Date: 2005-09-20
Classification: B60H

Abstract:
1. An automotive air conditioning system, comprising: an air conditioning duct having an outlet; an evaporator that cools air inside the air conditioning duct; a beater core that heats air inside the air conditioning duct; an air mix door that divides air passing through an interior of the air conditioning duct into a hot side air which is made to pass through the heater core and a non-hot side air which is made to bypass the heater core; an outlet air temperature sensor downstream of the evaporator and heater core that detects a temperature of air at the outlet; a control unit that is connected to the outlet air temperature sensor; a primary bypass passageway bypassing the heater core which is defined by the air mix door; a secondary bypass passageway bypassing the heater core in addition to the primary bypass passageway; and a cold air controlling door that controls a flow rate of air in the secondary bypass passageway; wherein the control unit includes: