Invention Grant
- Patent Title: Exhaust gas recirculation apparatus for engine
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Application No.: US13897873Application Date: 2013-05-20
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Publication No.: US09726118B2Publication Date: 2017-08-08
- Inventor: Mamoru Yoshioka , Shinichiro Nogawa , Yasuyuki Irisawa , Hiroyuki Hokuto
- Applicant: Mamoru Yoshioka , Shinichiro Nogawa , Yasuyuki Irisawa , Hiroyuki Hokuto
- Applicant Address: JP Obu-Shi JP Toyota
- Assignee: AISAN KOGYO KABUSHIKI KAISHA,TOYOTA JIDOSHA KABUSHIKI KAISHA
- Current Assignee: AISAN KOGYO KABUSHIKI KAISHA,TOYOTA JIDOSHA KABUSHIKI KAISHA
- Current Assignee Address: JP Obu-Shi JP Toyota
- Agency: Oliff PLC
- Priority: JP2012-118632 20120524
- Main IPC: F02B47/08
- IPC: F02B47/08 ; F02M25/07 ; F02B29/04 ; F02M26/05 ; F02M26/22 ; F02M26/35 ; F02M26/54

Abstract:
An EGR apparatus includes a EGR passage and an EGR valve provided in the EGR passage to regulate an EGR flow rate in the EGR passage. An ECU closes the EGR valve from an open state prior to start of deceleration of the engine based on engine rotation speed detected by a rotation speed sensor, accelerator opening degree detected by an accelerator sensor, and actual opening degree of the EGR valve. During deceleration of the engine, the ECU obtains a target opening degree of the EGR valve according to the separately detected engine rotation speed and accelerator opening degree from a target opening degree map and starts to close the EGR valve when a difference between an actual opening degree and the target opening degree of the EGR valve exceeds a predetermined value.
Public/Granted literature
- US20130312718A1 EXHAUST GAS RECIRCULATION APPARATUS FOR ENGINE Public/Granted day:2013-11-28
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