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  • Variable force solenoid — A variable force solenoid (VFS) is an electro hydraulic device that controls pressure proportionally or inversely proportionally to a signal (voltage or current) obtained from the on board controller of a powertrain. A low flow VFS is used as a… …   Wikipedia

  • Variable valve timing — Variable valve timing, or VVT, is a generic term for an automobile piston engine technology. VVT allows the lift or duration or timing (some or all) of the intake or exhaust valves (or both) to be changed while the engine is in operation. Two… …   Wikipedia

  • Variable displacement — is an automobile engine technology that allows the engine displacement to change, usually by deactivating cylinders, for improved fuel economy. The technology is primarily used in large, multi cylinder engines. Many automobile manufacturers have… …   Wikipedia

  • Variable length intake manifold — (VLIM) is an automobile engine manifold technology. As the name implies, VLIM can vary the length of the intake tract in order to optimize power and torque, as well as provide better fuel efficiency.There are two main effects of variable intake… …   Wikipedia

  • Variable compression ratio — is the technology to adjust internal combustion engine cylinder compression ratios on the fly. This is done to increase fuel efficiency while under varying loads. Higher loads require lower ratios to be more efficient and vice versa. Variable… …   Wikipedia

  • Pressure-Correction Methods — refer to a class of methods used in computational fluid dynamics for solving the Navier Stokes equations normally for incompressible flows. Common Properties The equations solved in this approach arise from the implicit time integration of the… …   Wikipedia

  • Variable camber wing — is a design of aircraft wing by V.J. Burnelli that changes the camber of the airfoil (1933), and varies the area and camber of the wing (1937).This is depicted in the figure below. A mechanism moves and rotates the leading and trailing edge to… …   Wikipedia

  • Variable air volume — (VAV) is a technique for controlling the capacity of a heating, ventilating, and/or air conditioning (HVAC) system. The simplest VAV system incorporates one supply duct that, when in cooling mode, distributes approximately convert|55|F supply air …   Wikipedia

  • Pressure measurement — The construction of a bourdon tube gauge, construction elements are made of brass Many techniques have been developed for the measurement of pressure and vacuum. Instruments used to measure pressure are called pressure gauges or vacuum gauges. A… …   Wikipedia

  • Variable Density Tunnel — Infobox nrhp name = Variable Density Tunnel nrhp type = nhl caption = The tank of the Variable Density Tunnel arriving in 1922 lat degrees = 37 lat minutes = 4 lat seconds = 43 lat direction = N long degrees = 76 long minutes = 20 long seconds =… …   Wikipedia

  • Variable Cycle Engine — In a Variable Cycle Engine (VCE) the engine cycle is deliberately modified from that which would occur under normal circumstances.The next generation of Supersonic transport (SST) may require some form of VCE. SST engines require a high Specific… …   Wikipedia

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