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:
Nov. 20, 2001
Filed:
Jun. 07, 2000
John M. Clarke, Chillicothe, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
Most internal combustion engines may be optimized for either power or efficiency. A dual mode internal combustion engine may operate in either a power mode or an efficient mode. The dual mode internal combustion engine has two four-cycle combustion chambers and a two-cycle compression/expansion chamber. The valve system is set up to introduce a fluid charge into the compression/expansion cylinder during the power mode. The fluid charge is compressed in the compression/expansion chamber and one of the combustion chambers. During the efficiency mode, the fluid charge is expanded first in one of the combustion chambers and further expanded in the compression/expansion chamber.