Abstract: An air conditioning control system for controlling the air conditioning system of a vehicle. The air conditioning control system is capable of determining the occupancy status of various locations in the vehicle interior. The air conditioning control system alters the flow rate of conditioned air to various portions of the vehicle interior based at least partially upon the occupancy of those areas of the vehicle interior. The air conditioning control system delivers increased amounts of conditioned air to the occupied portions of the vehicle interior when the conditioned air is of a comfortable temperature. The air conditioning control system delivers decreased amounts of conditioned air to the occupied portions of the vehicle interior when the conditioned air is most likely to be of an uncomfortable temperature.

Abstract: A zonal climate control system for a vehicle passenger compartment provides independent outside air mixing for zones behind the operator area. A forward zone climate unit comprises, an air circulation system having an outlet to the vehicle passenger compartment, an inlet from the vehicle passenger compartment, an inlet communicating with an outside environment, a heater core coupled to the engine driven heat source and an evaporator coupled to the engine driven air conditioning compressor. The passenger compartment further includes a rearward zone climate unit, comprising, an air circulation system having an outlet to the vehicle passenger compartment, an inlet from the vehicle passenger compartment, an inlet communicating with the outside environment through the exterior skin of the vehicle, a heater core coupled to the engine driven heat source and an evaporator coupled to the engine driven compressor.

Abstract: A zonal climate control system for a vehicle passenger compartment provides independent outside air mixing for zones behind the operator area. A forward zone climate unit comprises, an air circulation system having an outlet to the vehicle passenger compartment, an inlet from the vehicle passenger compartment, an inlet communicating with an outside environment, a heater core coupled to the engine driven heat source and an evaporator coupled to the engine driven air conditioning compressor. The passenger compartment further includes a rearward zone climate unit, comprising, an air circulation system having an outlet to the vehicle passenger compartment, an inlet from the vehicle passenger compartment, an inlet communicating with the outside environment through the exterior skin of the vehicle, a heater core coupled to the engine driven heat source and an evaporator coupled to the engine driven compressor.

Abstract: An air conditioning control system for controlling the air conditioning system of a vehicle. The air conditioning control system is capable of determining the occupancy status of various locations in the vehicle interior. The air conditioning control system alters the flow rate of conditioned air to various portions of the vehicle interior based at least partially upon the occupancy of those areas of the vehicle interior. The air conditioning control system delivers increased amounts of conditioned air to the occupied portions of the vehicle interior when the conditioned air is of a comfortable temperature. The air conditioning control system delivers decreased amounts of conditioned air to the occupied portions of the vehicle interior when the conditioned air is most likely to be of an uncomfortable temperature.

Abstract: A truck cab door system for increased right side viewing area includes a truck cab door having an inner skin panel and an outer skin panel spaced apart but joined together along the end edges thereof. A relatively large opening in an upper portion of the door skin panels provides a field of vision through a correspondingly dimensioned glass panel of a dropping glass window assembly received between the skin panels and within and closing off the opening when in a raised position thereof. A mechanism for causing selective dropping or raising of the glass panel of the dropping glass window assembly is operatively engaged to a mechanism for supporting the glass panel. A second, comparatively large opening is provided in a lower portion of each door skin panel with a viewing window assembly including a window panel fixed within the second opening of the outer skin panel and a clear panel removably mounted over the second opening of the inner skin panel.

Abstract: The integral cab side extender or fairing for a tractor-trailer provides reduction of aerodynamic drag. The cab extender is a unitary structure including a rear-quarter-panel-forming portion having a rear wall, a side wall and a front wall. The side wall and rear wall of the rear-quarter-panel-forming portion form an integral fairing. The side wall has a sinuous, progressively rearwardly and laterally outwardly flared sidewall-forming surface and the rear wall has a rearwardly laterally outwardly flared rear wall-forming surface which converges with the flared sidewall-forming surface to form the fairing.