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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 9702296 B1

PDFFull Text
Date of Patent:
Jul. 11, 2017

Filed:

Dec. 04, 2013

Turbocharged engine

Applicant:

Mazda Motor Corporation, Hiroshima, JP;

Inventors:

Naoyuki Yamagata, Higashihiroshima, JP;

Shuhei Tsujita, Hiroshima, JP;

Assignee:

MAZDA MOTOR CORPORATION, Hiroshima, JP;

Attorney:

Studebaker & Brackett PC

Primary Examiner:

Thai Ba Trieu

Int. Cl.
CPC ...
F02D 23/00 (2006.01); F02M 25/07 (2006.01); F02B 37/18 (2006.01); F02D 21/08 (2006.01); F02D 23/02 (2006.01); F02D 41/40 (2006.01); F02P 15/02 (2006.01); F02D 41/00 (2006.01); F02D 37/02 (2006.01); F02B 31/02 (2006.01); F02M 26/20 (2016.01); F02M 26/05 (2016.01); F02B 17/00 (2006.01); F02B 23/10 (2006.01); F02B 29/04 (2006.01); F02B 23/08 (2006.01); F02M 26/13 (2016.01); F02M 26/23 (2016.01);
U.S. Cl.
CPC ...
F02B 37/183 (2013.01); F02B 31/02 (2013.01); F02D 21/08 (2013.01); F02D 23/02 (2013.01); F02D 37/02 (2013.01); F02D 41/005 (2013.01); F02D 41/0007 (2013.01); F02D 41/402 (2013.01); F02M 26/05 (2016.02); F02M 26/20 (2016.02); F02P 15/02 (2013.01); F02B 17/005 (2013.01); F02B 23/104 (2013.01); F02B 29/0406 (2013.01); F02B 2023/085 (2013.01); F02B 2023/108 (2013.01); F02M 26/13 (2016.02); F02M 26/23 (2016.02); Y02T 10/144 (2013.01); Y02T 10/146 (2013.01); Y02T 10/44 (2013.01); Y02T 10/47 (2013.01);
Abstract

An engine includes: a turbocharger including a turbine and a compressor; an EGR passage connecting an exhaust passage on an upstream side of the turbine and an air intake passage on a downstream side of the compressor; an EGR valve provided in the EGR passage; a bypass passage that bypasses the turbine; and a waste gate valve provided in the bypass passage. In the engine, when a boost pressure is increased to a limit pressure, a first boost pressure control is executed, in which the EGR valve is opened and the waste gate valve is closed. After the first boost pressure control starts, when an engine speed is increased to a prescribed value, a second boost pressure control is executed, in which the waste gate valve is opened in addition to the EGR valve.

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