Abstract:
An air conditioning system includes an intake housing with a fresh air opening and a recirculation air opening, a filter housing to admit an air filter and a fan housing with a fan for intake by suction of air through the intake housing and directing the air through the filter housing. The fresh air opening and the recirculating air opening are aligned in a common horizontal direction and in a vertical direction one above the other. The recirculating air opening is situated in the gravitational direction beneath the fresh air opening. Between the fresh air opening and the recirculating air opening a separation area is configured, with drainage means in such a way that the fluid penetrating into the fresh air opening, when flowing over the drainage means is directed past the recirculating air opening in a receiving area placed below the recirculating air opening.
Abstract:
A silencer for a vehicle air conditioning system is designed to reduce a noise and a vibration of a compressor transmitted into a vehicle room along coolant pipes. The silencer includes a silencer body tube and an external resonance tube. The silencer body tube is installed between the coolant pipes wherein a coolant gas flowing along the coolant pipes passes through the silencer body tube, the silencer body tube including one or more resonance holes formed on an outer circumferential surface of the silencer body tube. The external resonance tube is installed on the outer circumferential surface of the silencer body tube wherein a resonance chamber for absorbing a vibration and a noise of a coolant gas flowing through the silencer body tube is defined between the outer circumferential surface of the silencer body tube and the external resonance tube.
Abstract:
A variable displacement compressor includes a rotary valve coupled to a drive shaft. The rotary valve is centrally received in a suction chamber of the variable displacement compressor and extends through an aperture formed in a cylinder block thereof. The rotary valve has a suction opening cooperating with the cylinders to successively provide a direct fluid communication between the suction chamber and each of the cylinders.
Abstract:
A charge air cooler comprises an outlet tank having a drain mechanism integrated in a wall thereof. The drain mechanism comprises a first valve head disposed to a first side of the wall, a first spring member disposed between the first valve head and the wall, a second valve head disposed to a second side of the wall, a second spring member disposed between the second valve head and the wall, and a valve stem coupled to each of the first valve head and the second valve head. The valve stem is reciprocatingly disposed within an aperture formed in the wall. The drain mechanism is configured to be in a closed position when an internal pressure within the outlet tank is at least one of greater than a first pressure value and lower than a second pressure value.
Abstract:
A device for the recycling of exhaust gas of an internal combustion engine in a motor vehicle. The device comprises an exhaust gas heat exchanger constructed with a first housing element with an inlet and an outlet for the exhaust gas and at least one inlet and at least one outlet for a coolant, and a compressor which is constructed with a second housing element with an inlet and an outlet for the exhaust gas. The first housing element of the exhaust gas heat exchanger and the second housing element of the compressor are constructed as a housing connected to a cohesive, compact component so that the exhaust gas heat exchanger and the compressor are arranged inside the housing.
Abstract:
A double pipe type heat exchanger includes an inner pipe having a first flow path defined therein and an outer pipe arranged around the inner pipe to define a second flow path between the inner pipe and the outer pipe. The inner pipe includes a spiral groove formed on an outer circumferential surface of the inner pipe to extend along a longitudinal direction of the inner pipe. The outer pipe includes a reduced diameter portion protruding inwardly so that the inner surface of the outer pipe is intermittently contacted with the outer circumferential surface of the inner pipe.
Abstract:
A heat pump system for a vehicle, which makes refrigerant bypass an external heat exchanger and turns off a fan mounted on the external heat exchanger when temperature of the outdoor air is lower than setting temperature and the vehicle enters into an idle state in a heat pump mode, thereby continuously operating the heat pump mode even in the below zero temperature so as to keep heating performance, reducing consumption of electrical power without needing to operate an electric heater, and preventing excessive noise of a fan when the vehicle enters into an idle state in the below zero temperature.
Abstract:
A tube and fin arrangement of an evaporator for an air conditioning system for a vehicle having a first row of tubes disposed within a flow of air having at least two refrigerant tubes and at least two thermal storage tubes in thermal communication with the at least two refrigerant tubes, each of the thermal storage tubes containing a phase change material. The tube and fin arrangement further includes a fm in thermal communication with the first row of tubes and configured to receive a flow of air therethrough.
Abstract:
A method for optimizing the regulation of an electric drive for machinery with specific torque behavior which periodically fluctuates significantly between extreme values specific to working points includes the step of implementing a characteristic field. A drive motor is provided for the electric drive with a permanent magnet rotor and a stator with a stator winding. The stator winding is energized with a three-phase alternating current across an inverter. Changes in the number of revolutions of the drive motor and the angle error are minimized by a correction of this phase current and a correction of the angular velocity. The characteristic field for the torque variation which is specific to the machine is implemented in the regulation algorithm of the inverter.
Abstract:
Disclosed are a pulley structure and a damper pulley that prevent corrosion. The pulley structure may include a hub part that is fitted on a crankshaft rotated by power from an engine and rotates with the crankshaft and a pulley part coupled with the hub part to rotate with the hub part and connected with a power transmission member. The hub part may include a pulley contact surface facing the pulley part, and pulley coupling portions formed at the pulley contact surface to secure coupling members. The pulley part may include a hub contact surface facing the pulley contact surface of the hub part, hub coupling portions coupled to the pulley coupling portions by securing the coupling members, and coupling grooves recessed from the hub coupling portions to insert the coupling members. Washers made of an insulator may be fitted on the coupling members between the pulley coupling portions and the hub coupling portions.