OPENING/CLOSING VALVE STRUCTURE FOR EXHAUST GAS RECYCLING DEVICE

PROBLEM TO BE SOLVED: To ensure the sufficient quantity of a recycling exhaust gas, by constituting an opening/closing valve, interposed in an exhaust gas recycling passage, as a poppet valve, also the umbrella part of the opening/closing valve so as to be protruded in an exhaust passage when the po...

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Bibliographische Detailangaben
1. Verfasser:	KAMITAKI YASUSHI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION COMBUSTION ENGINES CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES ENGINE PLANTS IN GENERAL 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 MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING STEAM ENGINES 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 ensure the sufficient quantity of a recycling exhaust gas, by constituting an opening/closing valve, interposed in an exhaust gas recycling passage, as a poppet valve, also the umbrella part of the opening/closing valve so as to be protruded in an exhaust passage when the poppet valve is lifted; and also providing a guide part, for guiding an exhaust gas, on the umbrella part. SOLUTION: The generation of NOx can be restrained by interposing an EGR valve 3 in an EGR passage 2, communicating between an exhaust passage 1 and a suction passage; and recycling part of an exhaust gas into the suction passage from the EGR passage 2. In this case, the valve main body 4 of the EGR valve 3 is constituted as a poppet valve equipped with a shaft part 5 and an umbrella part 6, and also so that the umbrella part 6 can be protruded in the exhaust passage 1 when the valve main body 4 is lifted. A guide part 7, having a wall part 9 and a raised part 10, is provided on the umbrella part 6. Also an opening part 8 is formed on the wall part 9, and when the valve main body 4 is lifted, part of the exhaust gas is taken in from the opening part 8 to be guided into the EGR passage 2 along the raised part 10.