Patents by Inventor Difei Zhao

Difei Zhao has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10260379
    Abstract: The present invention provides a method of operating an engine (14) having one or more cylinders (16) each having a piston (18) within the cylinder (16) and each piston (18) 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 (14) 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 (16) 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 (14) capable of being operated in accordance with the method.
    Type: Grant
    Filed: April 11, 2016
    Date of Patent: April 16, 2019
    Assignee: DEARMAN ENGINE COMPANY LIMITED
    Inventors: Peter Dearman, Michael Dearman, Don Old, Henry Clarke, Difei Zhao
  • Publication number: 20180306067
    Abstract: The present invention provides a method of operating an engine (14) having one or more cylinders (16) each having a piston (18) within the cylinder (16) and each piston (18) having an expansion stroke and a return stroke and a top dead centre (TDC) position and a bottom dead centre position (BDC) and said engine (14) 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 centre of the piston BDC; delivering the HEF to the cylinder (16) 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 (14) capable of being operated in accordance with the method.
    Type: Application
    Filed: April 11, 2016
    Publication date: October 25, 2018
    Inventors: Peter DEARMAN, Michael DEARMAN, Don OLD, Henry CLARKE, Difei ZHAO
  • Publication number: 20100035316
    Abstract: A method of brewing alcohol, comprising at least the following steps: a grinding step of materials: grinding a mixture of the materials and water to obtain a mash containing material residues; a mixture-preparing step: mixing the mash containing material residues with yeast; a fermentation step: fermenting the mash containing material residues and the yeast to obtain a fermented mash containing material residues and alcohol; and a distillation step: distilling the fermented mash containing material residues and alcohol to obtain the alcohol. The mash containing material residues is used for mixing, then the mash containing material residues and the yeast is fermented, finally the mash containing the material residues and alcohol content is distilled. Not only is the sugar in the mash converted into alcohol, but also the other contents such as fiber and residual sugar in the material residues are converted into alcohol, which improves the yield of liquor by 20% to 25% and the production cycle is shortened.
    Type: Application
    Filed: August 10, 2007
    Publication date: February 11, 2010
    Inventors: Wentao Li, Guipin Lv, Difei Zhao, Xiaolin Lei, Jianquan Li