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Radiator caps for pressurized automotive cooling systems. Of the two valves, one prevents the creation of a vacuum, the other limits the pressure. It is generally a limitation of most cooling systems that the cooling fluid not be allowed to boil, as the need to handle gas in the flow greatly complicates design.
The temperature of the cooling air may range from well below freezing to 50 °C. Further, while engines in long-haul boat or rail service may operate at a steady load, road vehicles often see widely varying and quickly varying load. Thus, the cooling system is designed to vary cooling so the engine is neither too hot nor too cold.
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.
Proper engine coolant and a pressurized coolant system obviate these shortcomings of water. With proper antifreeze, a wide temperature range can be tolerated by the engine coolant, such as −34 °F (−37 °C) to +265 °F (129 °C) for 50% (by volume) propylene glycol diluted with distilled water and a 15 psi pressurized coolant system.
Older cars often have non-pressurized cooling systems, and the water-based coolant can boil and overflow. Traditionally, this issue has been solved by topping off the radiator with water. This dilutes the coolant and the water can contain minerals harmful to the vehicle. Classic car owners have adopted waterless coolant to solve this problem.
A manifold pressure regulating shut-off valve (MPRSOV) restricts the flow as necessary to maintain the desired pressure for downstream systems. A certain minimum supply pressure is needed to drive the air through the system, but it is desired to use as low a supply pressure as possible, because the energy the engine uses to compress the bleed ...
Pages in category "Engine cooling systems" The following 21 pages are in this category, out of 21 total. This list may not reflect recent changes. A. Air cooling; C.
Cooling system may refer to: Cooling systems for buildings, part of HVAC technology; Cooling systems for vehicles, such as internal combustion engine cooling;