Abstract: An exhaust gas heat recovery (EGHR) heat exchanger, for recovering waste heat from the hot exhaust gases of an internal combustion engine, having a housing and a cylindrical body disposed within the housing. The cylindrical body defines a central passageway and together with the housing defines an annular passageway for the flow of hot exhaust gases. A bypass means is disposed within the central passageway and adapted to selectively by-pass at least a portion of the exhaust gas from the central passageway to the annular passageway. The EGHR heat exchanger also includes at least one fluid tube extending along a tube axis and having at least one lobe extending the length of the tube thereby defining a lobed tube. The lobed tube is twisted about the tube axis forming a twisted lobed tube which is then coiled about the longitudinal axis within the annular exhaust gas passageway.

Abstract: The assembly includes a heat exchanger assembly including a plurality of tubes extending between first and second manifolds. A plurality of fins extend back and forth between and long the tubes in a continuous patch and define a plurality of legs extending between the tubes. Each of the legs includes a plurality of front long louvers for conveying a stream of air through the legs. Each of the legs further defines a plurality of main spoilers between the front long louvers and the back edges of the legs for inducing turbulence in the stream of air with each of the main spoilers having a spoiler height in the range of 50 to 90 percent of the long louver height and each of the main spoilers having a spoiler length in the range of 10 to 35 percent of the long louver length.

Abstract: A cooling fan assembly for cooling a heat exchanger includes a shroud having a plurality of stators extending radially to support a hub. A flow-guide including an outer rim and inner rim surrounds the shroud and extends to the heat exchanger. The outer rim extends from the heat exchanger to the stators. The inner rim extends annularly about the axis and curves convexly from the outer rim. A fan unit includes a plurality of fan blades extending radially from a motor supported by the hub. Each fan blade includes a leading edge facing the stators and a trailing edge facing in the opposite direction with a blade tip extending therebetween. A fan section extends from the inner rim and axially about the fan blades. The stators are disposed between the heat exchanger and the fan blades. The stators have a front edge facing the heat exchanger and a back edge facing the fan blades. Each stator is connected to the inner rim with the front edge extending radially outward and farther than the back edge.

Abstract: A thermal management system for a vehicle comprises a radiator and a liquid cooled condenser in fluid communication with the radiator. The liquid coolant circulates through the radiator and the condenser. The refrigerant for an HVAC unit also circulates through the condenser, with the condenser transferring heat from the refrigerant to the liquid coolant. The heat exchanger is disposed within the condenser and is in fluid communication with an engine for circulating an engine oil therebetween. The heat exchanger transfers heat from the engine oil to the liquid coolant within the condenser.

Abstract: A cooling system includes a fan assembly that is rotated to move air in a primary path through a housing. The fan assembly includes a hub and a plurality of spaced reinforcing ribs that establish channels between a motor casing and the interior of the hub. A heat sink assembly is axially spaced from a hub bottom to define an air cavity that is in communication with a gap. The hub includes a tube that defines an air passage to establish communication with the cavity. A plurality of air vanes extend in a spiral path from the hub bottom and into the air cavity to move air through the air passage and create turbulence over the heat sink assembly. The air vanes move the air over the heat sink assembly and through the air passage to establish communication between the channels and the air cavity.

Abstract: A cooling fan assembly for cooling a heat exchanger includes a shroud having a plurality of stators extending radially to support a hub. A flow-guide including an outer rim and inner rim surrounds the shroud and extends to the heat exchanger. The outer rim extends from the heat exchanger to the stators. The inner rim extends annularly about the axis and curves convexly from the outer rim. A fan unit includes a plurality of fan blades extending radially from a motor supported by the hub. Each fan blade includes a leading edge facing the stators and a trailing edge facing in the opposite direction with a blade tip extending therebetween. A fan section extends from the inner rim and axially about the fan blades. The stators are disposed between the heat exchanger and the fan blades. The stators have a front edge facing the heat exchanger and a back edge facing the fan blades. Each stator is connected to the inner rim with the front edge extending radially outward and farther than the back edge.

Abstract: A thermal management system for a vehicle comprises a radiator and a liquid cooled condenser in fluid communication with the radiator. A liquid coolant circulates through the radiator and the condenser. A refrigerant for an HVAC unit also circulates through the condenser, with the condenser transferring heat from the refrigerant to the liquid coolant. A heat exchanger is disposed within the condenser and is in fluid communication with an engine for circulating an engine oil therebetween. The heat exchanger transfers heat from the engine oil to the liquid coolant within the condenser.

Abstract: A U flow radiator 10 with a header tank 12 split into inlet and outlet sides I and O by a lengthwise divider wall 18 has a coolant inlet consisting of a cylindrical pipe 22. A hollow cylindrical barrel 24 co extensive and coaxial with pipe 22 and extending across divider wall 18, with cut outs 26 and 28 opening respectively into both sides I and O. A thin walled, hollow cylindrical sleeve 30 turns within barrel 24 with windows 36 and 38 that alternately block or open the cut outs 26 and 28, or open both partially. A rotary actuator 40 turns sleeve 30 within barrel 24. Coolant can be selectively routed all to the tank outlet side O, by passing the radiator 10 for quick warm up. After warm up, coolant can be routed to I or O in desired proportions to increase or decrease cooling capacity. With high engine cooling demand, all coolant is routed to the inlet side I and all coolant passes through radiator 10.

Abstract: A U flow radiator 10 with a header tank 12 split into inlet and outlet sides I and O by a lengthwise divider wall 18 has a coolant inlet consisting of a cylindrical pipe 22. A hollow cylindrical barrel 24 co extensive and coaxial with pipe 22 and extending across divider wall 18, with cut outs 26 and 28 opening respectively into both sides I and O. A thin walled, hollow cylindrical sleeve 30 turns within barrel 24 with windows 36 and 38 that alternately block or open the cut outs 26 and 28, or open both partially. A rotary actuator 40 turns sleeve 30 within barrel 24. Coolant can be selectively routed all to the tank outlet side O, by passing the radiator 10 for quick warm up. After warm up, coolant can be routed to I or O in desired proportions to increase or decrease cooling capacity. With high engine cooling demand, all coolant is routed to the inlet side I and all coolant passes through radiator 10.

Abstract: A radiator (10) with molded plastic header tanks (14,18) has an electric coolant pump and housing assembly (20) integrally formed with the outlet header tank (18). A first half (24) of the pump housing is integrally molded into the header tank (18) and a low point and across a smooth and wide transition. The second half of the pump housing (26) mates at a sealed circular seam to the first half, with an electric coolant pump (28) held closely inside the two. No fasteners are needed to mount the pump, and the assembly minimizes parts and potential leak points.

Abstract: A vehicle heater of the type that uses diverted engine coolant is provided with an accelerated warm up process that takes the coolant to a temperature suitable for passenger space heating more quickly. The fan that normally pulls outside air through the front end grill is, after vehicle start up, run in reverse, so as to actually retard the flow of air through the grill. The net effect of a separate structure that physically blocks air flow is achieved merely by using existing components in a new way.

Abstract: An automotive heat exchanger module comprises a radiator and condenser with conventional side manifold tanks and upper and lower, channel shaped reinforcements. Neither heat exchanger has any brackets or other provision for attachment to the vehicle by separate fasteners. Instead, a center mounted fan module has rectangular front and rear openings the upper and lower edges of which comprise integral features within which the upper and lower core reinforcements are captured and held with a simple push fit.

Abstract: A vehicle fan shroud and component cooling module (24) includes a fan (44) mounted within a fan ring (32) between the radiator (26) and condenser (28). Pressurized air, either positively pressurized (downstream of fan (44)), negatively pressurized (upstream of fan (44)), or both, is routed from within the fan ring (32) and to the component (22) to cool it. Since the air has not yet passed the radiator (26), it is not substantially hotter than regular ambient air. Unlike rammed ambient air, it is pressurized as long as the fan (44) is turning. It therefore provides better cooling than either rammed ambient air, or pressurized air picked up downstream of the radiator (26).

Abstract: A high output fan assembly for cooling the radiator of a motor vehicle. The fan assembly comprises a shaft, first and second fans, and a motor. The first fan includes a plurality of first blades, each of which has an inner portion attached to the shaft, while an outer hub is attached to an outer portion of at least one of the first blades. The second fan includes a plurality of second blades, each of which has an inner portion attached to the outer hub. The motor is drivingly connected to the shaft to drive the first and second fans at the same number of revolutions per minute. The fan assembly is situated either for pulling or for pushing air across the radiator and an air conditioning condenser of the motor vehicle.