Part-load control in a split-cycle engine
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United States of America Patent
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Jan 29, 2013
Grant Date -
Oct 21, 2010
app pub date -
Mar 31, 2010
filing date -
Apr 17, 2009
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An engine includes a crankshaft rotatable about a crankshaft axis. A compression piston is slidably received within a compression cylinder and operatively connected to the crankshaft such that the compression piston is operable to reciprocate through an intake stroke and a compression stroke during a single rotation of the crankshaft. An expansion (power) piston is slidably received within an expansion cylinder and operatively connected to the crankshaft such that the expansion piston is operable to reciprocate through an expansion stroke and an exhaust stroke during a single rotation of the crankshaft. At least two crossover passages interconnect the compression and expansion cylinders. Each of the at least two crossover passages includes a crossover compression (XovrC) valve and a crossover expansion (XovrE) valve operable to define a pressure chamber therebetween. The engine controls and maximizes engine efficiency at part-load by utilizing only selected crossover passages.
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