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:
May. 01, 2018
Filed:
Mar. 26, 2014
Sanden Holdings Corporation, Isesaki-shi, JP;
Tomonori Haraguchi, Isesaki, JP;
Hiroyuki Nagai, Yokohama, JP;
SANDEN HOLDINGS CORPORATION, Gunma, JP;
Abstract
To effectively reduce a situation in which an over-rotation of an expander occurs or the expander becomes a load on an engine at the time of a stop of a Rankine cycle in an exhaust heat recovery device provided with the Rankine cycle that recovers exhaust heat of an engine. A pressure difference ΔP between a high-pressure side and a low-pressure side of the Rankine cycle is obtained when the Rankine cycle is stopped (S), a waiting time Ta is set (calculated) based on the obtained pressure difference ΔP (S). Then, a bypass valve is opened to allow a refrigerant to circulate while bypassing the expander (S), and then an electromagnetic clutch is disengaged when the waiting time Ta has elapsed to block transmission of power between the expander and the engine (S, S).