AIR INTAKE DEVICE OF ENGINE

PURPOSE:To reduce unburnt component of fuel during deceleration and prevent both after-burn in an exhaust system and vibration at deceleration by supplying oxygen enriched air when an engine is decelerated. CONSTITUTION:When a throttle valve 13 for intake air (d) being fully opened or half opened, f...

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Bibliographische Detailangaben
Hauptverfasser:	OKIMOTO HARUO, SHIDAHARA YASUHIRO, WATANABE SHIYOUGO
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:	PURPOSE:To reduce unburnt component of fuel during deceleration and prevent both after-burn in an exhaust system and vibration at deceleration by supplying oxygen enriched air when an engine is decelerated. CONSTITUTION:When a throttle valve 13 for intake air (d) being fully opened or half opened, for example, is closed so as to have an engine placed in the decelerated condition, a deceleration discrimination circuit 28 receives an output from a load sensor 27 and estimates the decelerated condition. Resultantly, a relief valve 21 is closed by a driving circuit 29 and an O2 concentration controller 20 is coincidently actuated to open a control valve 19. A control valve 18 is then closed to supply an oxygen enriched air (b) only in an intake air passage 9 so as to improve the ignitability of mixture and reduce unburnt component in exhaust gas.