(12) United States Patent (10) Patent No.: US 7,387,093 B2 Hacsi (45) Date of Patent: Jun
USOO7387093B2 (12) United States Patent (10) Patent No.: US 7,387,093 B2 Hacsi (45) Date of Patent: Jun. 17, 2008 (54) INTERNAL COMBUSTION ENGINE WITH 6,094.915 A 8/2000 Negreet al. SIDEWALL COMBUSTION CHAMBER AND 6,397.579 B1 6/2002 Negre METHOD 6,543,225 B2 4/2003 Scuderi 6,609,371 B2 8, 2003 Scuderi (76) Inventor: James Scott Hacsi, 13 Dartmouth Ave., 6,722,127 B2 4/2004 Scuderi Pueblo, CO (US) 81005 6,880,502 B2 4/2005 Scuderi 6,986,329 B2 1/2006 Scuderi et al. (*) Notice: Subject to any disclaimer, the term of this 7,017,536 B2 3/2006 Scuderi patent is extended or adjusted under 35 7,021,270 B1 4/2006 Stanczyk U.S.C. 154(b) by 0 days. 7,121,236 B2 10/2006 Scuderi et al. (21) Appl. No.: 11/598,431 (22) Filed: Nov. 13, 2006 * cited by examiner (65) Prior Publication Data Primary Examiner Noah Kamen US 2007/OO89694 A1 Apr. 26, 2007 (57) ABSTRACT Related U.S. Application Data An internal-combustion, reciprocating-piston engine operat (60) Provisional application No. 60/848,594, filed on Oct. ing on the Otto cycle and associated method are provided 2, 2006. where a sidewall combustion chamber is employed that is capable of receiving highly-compressed air or a mixture of (51) Int. Cl. any gas and fuel from a cylinder while a main piston is F0IB 7/12 (2006.01) positioned at or near top-dead-center in the cylinder, and FO2B 9/00 (2006.01) where the sidewall combustion chamber is also capable of (52) U.S.
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