Internal-combustion engines – Precombustion and main combustion chambers in series – Having combustible mixture forming means
Patent
1995-02-23
1996-10-08
Nelli, Raymond A.
Internal-combustion engines
Precombustion and main combustion chambers in series
Having combustible mixture forming means
F02F 300
Patent
active
055620795
ABSTRACT:
A novel, internal combustion engine includes a cylinder, a head closing one end of the cylinder and a piston slidably mounted in the cylinder for reciprocating motion, in the usual manner, which reciprocation is converted into rotary motion by, for example, a conventional crankshaft. The top surface of the piston, cylinder head and cylinder serve as walls defining a system chamber, with a pocket formed in one of the system chamber walls for receiving fuel and serving as a combustion chamber for localized combustion therein. In one disclosed embodiment, the cylinder is divided into two sections with thermal insulation, serving as a heat barrier, disposed between the two sections and the piston has a hollow interior containing one or more heat shields spanning the hollow interior. The method of operation involves injection of fuel into a restricted area within the chamber defined between the piston head, cylinder head and cylinder, e.g., the aforementioned pocket. Air and/or exhaust gas within the chamber surrounding the restricted area of localized combustion serves as thermal insulation, protecting the cylinder walls. Operation is suitably with a peak gas temperature of 900.degree.-1100.degree. C. and a peak gas pressure of 500-1000 psi. Air is introduced in an amount providing 4-5 times the stoichiometric amount of oxygen.
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Nelli Raymond A.
The United States of America as Represented by the Administrator
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