Internal-combustion engines – Burning by highly compressed air – Oil engine air preheated
Reexamination Certificate
2006-02-07
2006-02-07
Yuen, Henry C. (Department: 3747)
Internal-combustion engines
Burning by highly compressed air
Oil engine air preheated
C123S07000R
Reexamination Certificate
active
06994057
ABSTRACT:
The internal combustion engine relies on air injection for ignition instead of Otto cycle spark or Diesel cycle fuel injection. Cylinder pairs are connected by a cylinder-connecting valve, which opens near top-dead-center on the compression stroke injecting high-pressure air from one cylinder into a second cylinder containing an air-fuel mixture thereby inducing detonation ignition at top-dead-center. During the expansion stroke, the cylinder-connecting valve remains open and provides equal pressure on both cylinders, which is substantially higher than possible in an Otto cycle. Constant volume heat addition makes this engine more efficient than the Diesel cycle. Compared to conventional engines, the absence of spark ignition or high pressure fuel injectors makes this engine more economical, more reliable, and scalable down to small sizes where fuel metering limitations of Diesel fuel injectors become problematic. The engine can serve as a reactor for generating high temperature hydrogen to power high temperature fuel cells.
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Loth John L.
Morris Gary J.
Castro Arnold
Yuen Henry C.
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