The development of continuous refrigeration technology has led to the introduction of multiple or parallel refrigeration systems, replacing the previous individual or single compressor systems used ...

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ABSTRACT Driven by the desire to implement low-cost, high-efficiency NOx aftertreatment systems, such as Three Way Catalysts (TWC) or Lean NOx Traps (LNT), a novel 6-Stroke engine cycle was explored ...

This paper presents the analysis and design of a variable-compression-ratio and displacement engine concept - the Alvar Cycle using a four-stroke engine-performance simulation. The Alvar-Cycle engine ...