The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 05, 2010
Filed:
Aug. 28, 2007
Applicant:
Pao C. Pien, Marco Island, FL (US);
Inventor:
Pao C. Pien, Marco Island, FL (US);
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
F02B 25/00 (2006.01); F02B 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for combusting fuel in an engine using a two-stroke homogeneous charge spark-ignition cycle. The method involving injecting fuel into partially compressed hot air to provide a homogenous charge to the cylinder before second stage compression in the cylinder, the engine having two variable compression ratios, a first variable compression ratio such that spark ignited HCCI-like combustion being emission free, and a second variable compression ratio for preventing pre-ignition at high loads. The expansion process of the engine having a chosen expansion ratio much greater than the compression ratio.