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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.:

US 9291074 B1

PDFFull Text
Date of Patent:
Mar. 22, 2016

Filed:

Aug. 06, 2012

Engine waste-heat utilization device

Applicants:

Hiroyuki Nagai, Machida, JP;

Takayuki Ishikawa, Yokohama, JP;

Shinichiro Mizoguchi, Atsugi, JP;

Riyako Iwahashi, Atsugi, JP;

Shinji Nakamura, Maebashi, JP;

Inventors:

Hiroyuki Nagai, Machida, JP;

Takayuki Ishikawa, Yokohama, JP;

Shinichiro Mizoguchi, Atsugi, JP;

Riyako Iwahashi, Atsugi, JP;

Shinji Nakamura, Maebashi, JP;

Assignees:

NISSAN MOTOR CO., LTD., Yokohama-shi, Kanagawa, JP;

SANDEN CORPORATION, Isesaki-shi, Gunma, JP;

Attorney:

Drinker Biddle & Reath LLP

Primary Examiner:

Hoang Nguyen

Int. Cl.
CPC ...
F01K 23/10 (2006.01); F01K 25/00 (2006.01); F01K 23/18 (2006.01); F01N 5/02 (2006.01); F02G 5/04 (2006.01); F01K 23/06 (2006.01); F01K 23/14 (2006.01); F02C 6/18 (2006.01);
U.S. Cl.
CPC ...
F01K 23/18 (2013.01); F01K 23/065 (2013.01); F01K 23/10 (2013.01); F01K 23/14 (2013.01); F01N 5/02 (2013.01); F02C 6/18 (2013.01); F02G 5/04 (2013.01); F01N 2340/04 (2013.01); Y02T 10/16 (2013.01); Y02T 10/166 (2013.01);
Abstract

An engine-waste-heat utilization device includes a Rankine cycle with a heat exchanger that is configured to recover engine-waste-heat to refrigerant, an expander that is configured to generate power using the refrigerant coming out from the heat exchanger, a condenser that is configured to condense the refrigerant coming out from the expander and a refrigerant pump that is configured to supply the refrigerant coming out from the condenser to the heat exchanger by being driven by the expander, a power transmission mechanism (crank pulley, pump pulley, belt) that is configured to transmit surplus power to the engine when the expander has spare power even if the refrigerant pump is driven, a clutch that is configured to connect and disconnecting power transmission by the power transmission mechanism, and a case provided near a high-temperature part of the engine such that a shaft of the expander and that of the refrigerant pump are coaxially arranged, the clutch, the refrigerant pump and the expander are integrally housed in this order and the expander has a higher temperature than the clutch.

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