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Sorption pumps are a type of cryopump that is often used as roughing pumps to reduce pressures from the range of atmospheric to on the order of 0.1 Pa (10 −3 Torr), while lower pressures are achieved using a finishing pump (see vacuum).
The typical molecular sieve used is a synthetic zeolite with a pore diameter around 0.4 nanometer ( Type 4A ) and a surface area of about 500 m 2 /g. The sorption pump contains between 300 g and 1.2 kg of molecular sieve. A 15-liter system will be pumped down to about 10 −2 mbar by 300 g molecular sieve. [1]
The 2.0 engines utilising a system from Siemens and the 2.2 a system from Bosch. In both systems the injection pressure has been increased to 1,800 bar (26,000 psi). In both systems the injection pressure has been increased to 1,800 bar (26,000 psi).
Different types of pumps are suitable for different applications, for example: a pump's maximum lift height also determines the applications it can be used for. Low-lift pumps are only suitable for the pumping of surface water (e.g., irrigation, drainage of lands, ...), while high-lift pumps allow deep water pumping (e.g., potable water pumping ...
The term "roughing pump" derives from the vacuum range it works in, "rough vacuum", above 1x10 −3 torr (0.1 Pa). Pumps that operate in the high vacuum ranges typically don't operate, or only operate inefficiently, at atmospheric pressures, whereas pumps that work efficiently at atmospheric pressure usually cannot produce a vacuum lower than ...
The Chrysler 1.8, 2.0, and 2.4 are inline-4 engines designed originally for the Dodge and Plymouth Neon compact car. These engines were loosely based on their predecessors, the Chrysler 2.2 & 2.5 engine, sharing the same 87.5 mm (3.44 in) bore. The engine was developed by Chrysler with input from the Chrysler-Lamborghini team that developed the ...
The technology is simple, typically using a parallel-bar double-cam lift driven from a low-power electric motor, although the number of pumpjacks with stroke lengths 54 inches (1.4 m) and longer being used as water pumps is increasing. A short video recording of such a pump in action can be viewed on YouTube. [6]
The peristaltic pump was first patented in the United States by Rufus Porter and J. D. Bradley in 1855 (U.S. Patent number 12753) [2] as a well pump, and later by Eugene Allen in 1881 (U.S. Patent number 249285) [3] for blood transfusions.