In most engines, the compression ratio is set as high as the engine can stand short of detonation in pursuit of power and efficiency. Compression and expansion ratios are the same in an Otto ...

Object Details Description This Otto vertical gas engine was originally inside the cellar of Boyd’s Drug Store, which was in Washington DC. It was used primarily in the 1890s by Dr George W. Boyd ...

The Otto-Atkinson cycle engine operates on the Otto cycle at full load, for good power density, and on the Atkinson cycle at part loads, for reduced fuel consumption. The Atkinson cycle has a larger ...