Title:
An engine exhaust gas reflux device
Document Type and Number:
Japanese Patent JP6168042
Kind Code:
B2
Abstract:
Disclosed is an exhaust gas recirculation system provided in an engine to recirculate, to an intake manifold, a part of exhaust gas discharged from an engine body, as EGR gas. The exhaust gas recirculation system comprises: an in-head gas passage formed in a cylinder head to allow the EGR gas to pass through a position adjacent to a first coolant jacket formed in the cylinder head to allow coolant to flow therethrough an EGR cooler configured to cool the EGR gas after passing through the cylinder head via the in-head gas passage and before being introduced into the intake manifold; and a relay pipe configured to guide the EGR gas just after passing through the cylinder head, to the EGR cooler. The relay pipe is provided with a second coolant jacket for allowing coolant to flow therethrough so as to cool the EGR gas being flowing inside the relay pipe.
Inventors:
Mitsuyuki Murotani
Yasushi Nakahara
Sumimoto Hiroshi
Junji Umemura
Yasushi Nakahara
Sumimoto Hiroshi
Junji Umemura
Application Number:
JP2014265912A
Publication Date:
July 26, 2017
Filing Date:
December 26, 2014
Export Citation:
Assignee:
Mazda Corporation Inc
International Classes:
F02M26/32; F01P3/20; F02F1/24; F02F1/42; F02M26/28; F02M35/10; F02M35/104; F02M35/112
Domestic Patent References:
| JP2010285967A | ||||
| JP2002122044A | ||||
| JP2014084756A | ||||
| JP2014202109A | ||||
| JP11210576A | ||||
| JP2011202506A | ||||
| JP2012002101A |
Foreign References:
| WO2012127535A1 |
Attorney, Agent or Firm:
Etsushi Kotani
Masataka Otani
Tsutomu Fukunari
Masataka Otani
Tsutomu Fukunari