PERIPHERAL STRUCTURE FOR EGR GAS OUTLET

PROBLEM TO BE SOLVED: To provide a peripheral structure for an EGR gas outlet, having lower manufacturing cost without reducing engine output while preventing the blockage of the EGR gas outlet due to deposits. SOLUTION: The structure comprises the EGR gas outlet 22a opened to the inner wall bottom...

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Bibliographische Detailangaben
Hauptverfasser:	SATO SHIN, DOGE TSUYOSHI, ICHIHARA TAKESHI, SHIBUYA TORU
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION COMBUSTION ENGINES GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a peripheral structure for an EGR gas outlet, having lower manufacturing cost without reducing engine output while preventing the blockage of the EGR gas outlet due to deposits. SOLUTION: The structure comprises the EGR gas outlet 22a opened to the inner wall bottom face of an intake pipe when mounted on a vehicle, for part of exhaust gas to be recirculated in the intake pipe, a first groove portion 52d formed on the inner wall bottom face of the intake pipe and extending from the upstream side of the EGR gas outlet 22a in the flowing direction of intake air sideways to the flowing direction of the intake air so as to be longer than the size of at least the EGR gas outlet 22a, and second groove portions 52e, 52f continuously provided on the downstream side of the first groove portion 52d in the flowing direction of the intake air and formed on the side of the EGR gas outlet 22a along the flowing direction of the intake air. COPYRIGHT: (C)2006,JPO&NCIPI