variable compression

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• 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

• Saab Variable Compression engine — The Saab Variable Compression engine was a development project of Saab Automobile, for which it won an award both in 2000 and 2001.In a normal internal combustion engine, because cylinder bore diameter, piston stroke length and combustion chamber …   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

• Compression ratio — For compression ratio in data compression, see data compression ratio. The compression ratio of an internal combustion engine or external combustion engine is a value that represents the ratio of the volume of its combustion chamber from its… …   Wikipedia

• Variable bitrate — (VBR) is a term used in telecommunications and computing that relates to the bitrate used in sound or video encoding. As opposed to constant bitrate (CBR), VBR files vary the amount of output data per time segment. VBR allows a higher bitrate… …   Wikipedia

• Variable-order Markov model — Variable order Markov (VOM) models are an important class of models that extend the well known Markov chain models. In contrast to the Markov chain models, where each random variable in a sequence with a Markov property depends on a fixed number… …   Wikipedia

• Variable frame rate — is a term in video compression for a feature supported by some container formats which allows for the frame rate to change actively during video playback, or to drop the idea of frame rate completely and set individual timecode for each frame.… …   Wikipedia

• Variable-length code — In coding theory a variable length code is a code which maps source symbols to a variable number of bits. Variable length codes can allow sources to be compressed and decompressed with zero error (lossless data compression) and still be read back …   Wikipedia

• Compression driver — A compression driver is a type of loudspeaker driver which uses the technique of compression to achieve high efficiencies. In this context compression refers to the fact that the area of the loudspeaker diaphragm is significantly larger than the… …   Wikipedia

• Compression de flux — Générateur magnéto cumulatif Les générateurs magnéto cumulatifs sont des générateurs de hautes puissances pulsées fonctionnant par compression d un flux magnétique à l aide d explosifs. La compression de flux électromagnétique sans explosif est… …   Wikipédia en Français

• Compression de flux magnétique — Générateur magnéto cumulatif Les générateurs magnéto cumulatifs sont des générateurs de hautes puissances pulsées fonctionnant par compression d un flux magnétique à l aide d explosifs. La compression de flux électromagnétique sans explosif est… …   Wikipédia en Français