Title:
EGR DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/125576
Kind Code:
A1
Abstract:
The objective is to provide an EGR device with which it is possible to determine whether an engine is in the idle state, and to control an EGR valve, regardless of the operating state of an accelerator. This EGR device (8) returns a portion of the exhaust from an engine (1) as EGR gas to the intake air of the engine (1), and when the rotational frequency (N) of the engine (1) is between a low-speed threshold value (Na) and a high-speed threshold value (Nb) and the fuel injection amount (F) is between a low-injection-amount threshold value (Fa) and a high-injection-amount threshold value (Fb), which are set for each rotational frequency (N), this EGR device closes an EGR valve (10) that restricts the flow volume of the EGR gas.
Inventors:
YUKI RYO (JP)
NAKANO SATOSHI (JP)
ISHIGURO TAKUYA (JP)
NAKANO SATOSHI (JP)
ISHIGURO TAKUYA (JP)
Application Number:
PCT/JP2015/052423
Publication Date:
August 27, 2015
Filing Date:
January 29, 2015
Export Citation:
Assignee:
YANMAR CO LTD (JP)
International Classes:
F02M25/07
Foreign References:
| JP2003097308A | 2003-04-03 | |||
| JP2012225309A | 2012-11-15 | |||
| JP2013113093A | 2013-06-10 | |||
| JP2011185171A | 2011-09-22 | |||
| JPS59160052A | 1984-09-10 | |||
| JPH0216319A | 1990-01-19 | |||
| JP2000045797A | 2000-02-15 | |||
| JPH0643251U | 1994-06-07 | |||
| JP2001526355A | 2001-12-18 | |||
| JP2005282477A | 2005-10-13 |
Other References:
See also references of EP 3135894A4
Attorney, Agent or Firm:
YANO Juichiro (JP)
Juichiro Yano (JP)
Juichiro Yano (JP)
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