INTAKE-AIR DEVICE IN ENGINE

PURPOSE:To aim at enhancing the scavenging efficiency of an ignition plug which greatly contributes the ignition of an engine, by providing an auxiliary intake-air port which is connected to one, near to the ignition plug, of a plurality of intake ports which are branched off from the bottom of an i...

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Bibliographische Detailangaben
Hauptverfasser:	HATAMURA KOUICHI, ASAUMI KOUJI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING COMBUSTION ENGINES COMBUSTION ENGINES IN GENERAL HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INTERNAL-COMBUSTION PISTON ENGINES LIGHTING MECHANICAL ENGINEERING WEAPONS
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Beschreibung
Zusammenfassung:	PURPOSE:To aim at enhancing the scavenging efficiency of an ignition plug which greatly contributes the ignition of an engine, by providing an auxiliary intake-air port which is connected to one, near to the ignition plug, of a plurality of intake ports which are branched off from the bottom of an intake-air passage upstream of a shut-off valve. CONSTITUTION:Upon low load operation of an engine, a shutter valve 12 closes an intake-air passage 7. Intake-air is introduced from the upstream opening 13a of an auxiliary intake-air passage 13 upstream of the shutter valve 12, and enters into a combustion chamber 4 through the downstream opening 13b which is positioned as near to a first intake port 4 as possible. Intake-air flows down in the auxiliary intake-air passage 13 through the first intake port 4, is directed to an ignition plug 21, and creates a strong swirl without interfering with an exhaust valve 6.