초록 ▼

A control system for an electrically driven variable capacity automotive air conditioning system affords the passenger maximum comfort control without overloading an electrically commutated motor compressor drive. Driver selected comfort settings are sequentially overridden to avoid overloading the

A control system for an electrically driven variable capacity automotive air conditioning system affords the passenger maximum comfort control without overloading an electrically commutated motor compressor drive. Driver selected comfort settings are sequentially overridden to avoid overloading the motor. As motor overload conditions are alleviated the control system gradually returns to the initial driver selected comfort settings.

대표청구항 ▼

A method of controlling an electrically driven automotive air conditioning system, comprising the steps of: monitoring driver commanded air conditioner air delivery temperature, driver commanded proportion of outside to recirculated air to be introduced to the air conditioning system and driver comm

A method of controlling an electrically driven automotive air conditioning system, comprising the steps of: monitoring driver commanded air conditioner air delivery temperature, driver commanded proportion of outside to recirculated air to be introduced to the air conditioning system and driver commanded air conditioner blower fan speed; measuring actual air delivery temperature, motor power and motor temperature; varying the motor speed of the motor driving the air conditioner compressor to minimize difference between commanded and measured air delivery temperature; positioning a damper to achieve commanded proportion of outside to recirculated air; setting blower fan speed to commanded speed; overriding damper position and reducing the proportion of outside air, when motor power or temperature exceed predetermined limits, so that motor load is reduced; reducing motor speed when motor power or temperature exceed predetermined limits so that motor load is reduced; overriding commanded blower fan speed and reducing fan speed to reduce the load on the motor, when allowable motor temperature or power are exceeded; and restoring overridden damper position and fan speed, and allowing motor speed to vary to achieve commanded air temperature, when motor power and temperature no longer exceed allowable limits.