Cam shaft for achieving EGR

The invention discloses a cam shaft for achieving EGR. The cam shaft comprises an air inlet cam body and an exhaust cam body. The air inlet cam body is provided with an air inlet main cam and an EFR cam. An EGR cam is arranged in front of the air inlet main cam, the exhaust cam body is provided with...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	GUAN JINBIAO, LI MIN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING COMBUSTION ENGINES CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES ENGINE PLANTS IN GENERAL 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 WEAPONS
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Beschreibung
Zusammenfassung:	The invention discloses a cam shaft for achieving EGR. The cam shaft comprises an air inlet cam body and an exhaust cam body. The air inlet cam body is provided with an air inlet main cam and an EFR cam. An EGR cam is arranged in front of the air inlet main cam, the exhaust cam body is provided with an exhaust cam, the air inlet main cam and the EFR cam share a base circle, the exhaust cam is of asingle cam structure, the included angle between the maximum lift of the air inlet main cam and the maximum lift of the EGR cam is 118 degrees, and the included angle between the maximum lift of theair inlet main cam and the maximum lift of the exhaust cam is 109 degrees. The cam shaft has the following advantages that the structure is simple, the cost is lower compared with electric EGR, wastegas can participate in combustion, inert gas in waste gas is used for decreasing the combustion speed, the combustion temperature is lowered, accordingly, forming of nitric oxide is restrained, and non-road EURO 3 emission stan