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The Nissan Xterra is a truck-based compact SUV manufactured and marketed by Nissan from 1999 to 2015 across two generations; the first (1999–2004) sharing a platform and many of its major exterior parts from the front doors forward with the Nissan (D22) Frontier pickup [1] – and the second (2005–2015) sharing the Nissan F-Alpha platform with the Frontier and Pathfinder.
There is no standard for airflow and cooling of rack-mounted equipment. A variety of airflow patterns can be found, including front intakes and rear exhausts, as well as side intakes and exhausts. Low-wattage devices may not employ active cooling, but use only passive thermal radiation and convection to dissipate heat.
Cooling system may refer to: Cooling systems for buildings, part of HVAC technology; Cooling systems for vehicles, such as internal combustion engine cooling;
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In this type of system, the water circulating inside the water loop removes heat from the condenser of the heat pumps whenever the heat pumps are working in the cooling mode, then the externally mounted cooling tower is used to remove heat from the water loop and reject it to the atmosphere. By contrast, when the heat pumps are working in ...
Most models had a rear limited slip differential and some variants had a vacuum or electric solenoid-operated manual rear differential lock. A rear sway bar release mechanism appeared on some models. Some Y60s had a power take-off-driven front-mounted winch, with an in-cab control lever to the right of the gearstick.
Employing laser sensors, the system was designed to automatically speed or slow the QX4 to keep it a constant distance from cars ahead. Also new for 2002 was a revised audio system, plus audio controls for the available leather/wood steering wheel. The optional rear-seat video entertainment system offered a choice of VCR or DVD player.
A rack and pinion has roughly the same purpose as a worm gear with a rack replacing the gear, in that both convert torque to linear force. However the rack and pinion generally provides higher linear speed — since a full turn of the pinion displaces the rack by an amount equal to the pinion's pitch circle whereas a full rotation of the worm screw only displaces the rack by one tooth width.