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1167results about "Railway heating/cooling" patented technology

Vehicle ventilation system

A vehicle ventilation system mounted to the upper portion of the exterior structure of a vehicle's occupant cabin. The components of the exterior structure of the occupant cabin define an opening through the exterior structure of the occupant cabin in the upper portion of the occupant cabin. A duct is mounted to the exterior structure of the occupant cabin and has a first end in fluid communication with the opening in the exterior structure of the occupant cabin. A second end of the duct is positioned below the first end of the duct and is open to and in fluid communication with the outside atmosphere. A fan is mounted to the exterior structure of the occupant cabin and is positioned such that when in operation it can be operated to move air through the opening in the exterior structure of the occupant cabin. The fan is controllable to change the rate and direction of the flow of air which it creates. A first rotary damper is mounted over the opening in the exterior structure of the occupant cabin and can be selectively opened or closed to allow or prevent air flow through the opening in the exterior structure of the occupant cabin. A second damper is mounted in a position such that it radially surrounds the impeller of the fan and can be used to control the flow of air radially outward from or radially inward toward the impeller of the fan.
Owner:INT TRUCK INTPROP LLC

Partial air inlet control strategy for air conditioning system

A system and method of selecting air intake between 100% fresh air mode and 100% recirculated air mode for optimum heating/cooling performance, fuel economy and/or high voltage (HV) battery power consumption is disclosed. The system and method includes a partial recirculation control strategy in which the air inlet door is moved progressively to any position by taking into account cooling/heating loads and cabin fogging probability. As cooling/heating loads increase the air inlet door moves toward 100% recirculation mode. As fogging probability increases the air inlet door moves toward 100% fresh air mode. By selectively choosing a position between 100% recirculation and 100% fresh air, fuel economy and/or HV battery power consumption is optimized without compromising passenger comfort or causing fogging on interior glass surfaces. In cooling applications the compressor load is minimized and air conditioning performance is improved due to the reduced evaporator cooling load. The direct result of this improvement is increased fuel economy in the case of the internal combustion vehicle, reduced engine on time in the case of the hybrid electric vehicle (due to reduced HV battery power consumption), and reduced HV battery power consumption in the case of the hybrid electric vehicle (HEV) and the electric vehicle (EV). In heating applications, as the heating load is reduced the fuel economy of the internal combustion (IC) engine will be improved, the engine on time is reduced in the case of the HEV, and HV battery power consumption is reduced in the case of the EV.
Owner:FORD GLOBAL TECH LLC
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