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:
Apr. 16, 2019
Filed:
Apr. 11, 2016
Dearman Engine Company Limited, Croydon, GB;
Peter Dearman, Hertfordshire, GB;
Michael Dearman, Hertfordshire, GB;
Don Old, Middlesex, GB;
Henry Clarke, London, GB;
Difei Zhao, London, GB;
DEARMAN ENGINE COMPANY LIMITED, Croydon, GB;
Abstract
The present invention provides a method of operating an engine () having one or more cylinders () each having a piston () within the cylinder () and each piston () having an expansion stroke and a return stroke and a top dead center (TDC) position and a bottom dead center position (BDC) and said engine () employing a working fluid (WF) and a heat exchange fluid (HEF), comprising the steps of: introducing the HEF during the return stroke of the engine; introducing the working fluid (WF) during the expansion stroke of the engine; causing the exhaust valve to be opened at or near bottom dead center of the piston BDC; delivering the HEF to the cylinder () after the exhaust valve has been opened; and closing the exhaust valve before TDC, such as to allow the working fluid to be compressed by the piston within the cylinder. The invention also provides an engine () capable of being operated in accordance with the method.