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- Mitsubishi_MCA abstract "Mitsubishi MCA stands for Mitsubishi Clean Air, a moniker used in Japan to identify vehicles built with emission control technology. The term was first introduced in Japan, with later introductions internationally. The technology first appeared in January 1973 on the Mitsubishi 4G32A gasoline-powered inline four cylinder engine installed in all Mitsubishi vehicles using the 4G32 engine, and the Saturn-6 6G34 six cylinder gasoline powered engine installed in the Mitsubishi Debonair. The technology was installed so that their vehicles would be in compliance with Japanese Government emission regulations passed in 1968.Emission reducing technology began with the installation of a positive crankcase ventilation (PCV) valve (MCA-I), followed by the addition of a thermo reactor air pump and catalytic converter in addition to a exhaust gas recirculation (EGR) valve (MCA-II) and a solenoid controlled automatic choke installed on the carburetor.The MCA-Jet system has a small third valve separate from the intake and exhaust valves. Separate passages in the intake manifold feed each MCA-Jet valve. Since these passages are smaller than the main intake manifold passages, the air/fuel mixture must move faster. When the faster moving air/fuel mixture from the MCA-Jet valve hits the slower moving air/fuel mixture from the intake valve, a strong air swirling effect occurs that promotes more complete combustion. With MCA-Jet it was found that stable combustion could be obtained even with large amounts of exhaust gas recirculation (EGR), NOx could be reduced, and combustion improved. Honda's CVCC Stratified charge engine approach also used a small third valve, but sent a richer air/fuel mixture to a small pre-combustion chamber near the spark plug, to help ignite a leaner air/fuel mixture in the main combustion chamber. MCA-Jet was a simpler system that sent the same air/fuel mixture to all intake and MCA-Jet valves. Each MCA-Jet valve is quite small and may be prone to carbon build-up, causing the MCA-Jet valve(s) to stick open. If a Mitsubishi-designed engine has low compression, the MCA-Jet valve(s) could be the cause. Fortunately, each MCA-Jet valve and valve seat are a self-contained cylinder-shaped unit that screws into the cylinder head for easy replacement. Aftermarket MCA-Jet valves are available. With the advent of 4-valve per cylinder engines, manufacturers typically design the camshaft(s) to open one intake valve slightly before the other to create a swirling effect. This has made the MCA-Jet system obsolete. The MCA-Jet system was used in certain Mitsubishi-designed engines installed in both Mitsubishi-branded and Chrysler/Dodge/Plymouth-branded vehicles during the late 1970s to late 1980's.".
- Mitsubishi_MCA thumbnail MMC_MCA-JET_Valve.JPG?width=300.
- Mitsubishi_MCA wikiPageExternalLink 0101.html.
- Mitsubishi_MCA wikiPageExternalLink mitsubishi.html.
- Mitsubishi_MCA wikiPageExternalLink top.html.
- Mitsubishi_MCA wikiPageExternalLink 9-9.html.
- Mitsubishi_MCA wikiPageID "39722957".
- Mitsubishi_MCA wikiPageLength "3506".
- Mitsubishi_MCA wikiPageOutDegree "16".
- Mitsubishi_MCA wikiPageRevisionID "656710939".
- Mitsubishi_MCA wikiPageWikiLink CVCC.
- Mitsubishi_MCA wikiPageWikiLink Category:Automotive_technology_tradenames.
- Mitsubishi_MCA wikiPageWikiLink Category:Engine_technology.
- Mitsubishi_MCA wikiPageWikiLink Category:Engines.
- Mitsubishi_MCA wikiPageWikiLink Crankcase_ventilation_system.
- Mitsubishi_MCA wikiPageWikiLink Emission_standard.
- Mitsubishi_MCA wikiPageWikiLink Exhaust_gas_recirculation.
- Mitsubishi_MCA wikiPageWikiLink Mitsubishi_Debonair.
- Mitsubishi_MCA wikiPageWikiLink Mitsubishi_Motors.
- Mitsubishi_MCA wikiPageWikiLink Mitsubishi_Saturn_engine.
- Mitsubishi_MCA wikiPageWikiLink NOx.
- Mitsubishi_MCA wikiPageWikiLink Secondary_air_injection.
- Mitsubishi_MCA wikiPageWikiLink Stratified_charge_engine.
- Mitsubishi_MCA wikiPageWikiLink File:MMC_MCA-JET_Valve.JPG.
- Mitsubishi_MCA wikiPageWikiLinkText ""Mitsubishi Clean Air"".
- Mitsubishi_MCA wikiPageWikiLinkText "Jet Valve".
- Mitsubishi_MCA wikiPageWikiLinkText "MCA (Mitsubishi Clean Air)".
- Mitsubishi_MCA wikiPageWikiLinkText "MCA emissions control system".
- Mitsubishi_MCA wikiPageWikiLinkText "MCA".
- Mitsubishi_MCA wikiPageWikiLinkText "MCA-II".
- Mitsubishi_MCA wikiPageWikiLinkText "MCA-Jet".
- Mitsubishi_MCA wikiPageWikiLinkText "Mitsubishi MCA".
- Mitsubishi_MCA wikiPageWikiLinkText "Mitsubishi MCA-Jet".
- Mitsubishi_MCA wikiPageWikiLinkText "Mitsubishi's '''MCA'''".
- Mitsubishi_MCA wikiPageWikiLinkText "Mitsubishi's MCA-Jet".
- Mitsubishi_MCA wikiPageUsesTemplate Template:No_footnotes.
- Mitsubishi_MCA subject Category:Automotive_technology_tradenames.
- Mitsubishi_MCA subject Category:Engine_technology.
- Mitsubishi_MCA subject Category:Engines.
- Mitsubishi_MCA comment "Mitsubishi MCA stands for Mitsubishi Clean Air, a moniker used in Japan to identify vehicles built with emission control technology. The term was first introduced in Japan, with later introductions internationally. The technology first appeared in January 1973 on the Mitsubishi 4G32A gasoline-powered inline four cylinder engine installed in all Mitsubishi vehicles using the 4G32 engine, and the Saturn-6 6G34 six cylinder gasoline powered engine installed in the Mitsubishi Debonair.".
- Mitsubishi_MCA label "Mitsubishi MCA".
- Mitsubishi_MCA sameAs Q11342289.
- Mitsubishi_MCA sameAs ミツビシクリーンエアシステム.
- Mitsubishi_MCA sameAs m.0w1dk44.
- Mitsubishi_MCA sameAs Q11342289.
- Mitsubishi_MCA wasDerivedFrom Mitsubishi_MCA?oldid=656710939.
- Mitsubishi_MCA depiction MMC_MCA-JET_Valve.JPG.
- Mitsubishi_MCA isPrimaryTopicOf Mitsubishi_MCA.