Variable compression ratio engines and methods for HCCI compression ignition operation
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United States of America Patent
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Apr 3, 2018
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app pub date -
Aug 26, 2014
filing date -
Feb 27, 2012
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Abstract
Variable compression ratio engines and methods for homogeneous charge, compression ignition operation. The engines effectively premix the fuel and air well before compression ignition. Various embodiments are disclosed including embodiments that include two stages of compression to obtain compression ratios well above the mechanical compression ratio of the engine cylinders for compression ignition of difficult to ignite fuels, and a controllable combustion chamber volume for limiting the maximum temperature during combustion. Energy storage with energy management are also disclosed.
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