Gm Global Technolgoy Operations, Inc.

William L Drayer

James C Ostrand

Kenneth P Adasek

Edward W Yott

A motor vehicle passenger compartment heating, ventilating and air conditioning system employing a split heater core. A central opening in the heater core is aligned with an outlet and the temperature of the air discharged into the passenger compartment can be varied by adjusting a pair of air temperature doors.

Motor vehicle passenger compartment heating, ventilating and air

An automatic HVAC control system having a scheduled control in which the HVAC control variables are regulated in accordance with an empirically determined schedule to provide a desired comfort level in the vehicle, and an adaptive control which modifies the scheduled control when stall or overshoot conditions occur so that the design performance level of the system is achieved under all conditions.

Scheduled comfort control system with adaptive compensation for stall

An integral evaporator and accumulator for a motor vehicle air conditioning system formed with a stack of generally similarly configured plates and a pair of tanks.

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Romeo, MI, United States of America

William L Drayer