tag:blogger.com,1999:blog-35525812.post116375262125070275..comments2023-10-17T22:25:30.949+07:00Comments on andri's personal blog: Another Night With Technomehttp://www.blogger.com/profile/17632487403478487239noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-35525812.post-81228011183108306682012-02-05T12:39:26.299+07:002012-02-05T12:39:26.299+07:00i think it is not for A.I.R. i think it is for O2 ...i think it is not for A.I.R. i think it is for O2 sensor for EFi equipped engine. Kymco doesn't want to waste money making two different type of exhaust system. So they make 1 exhaust system that can be applied to both type enginescootsterhttps://www.blogger.com/profile/15414820759838309962noreply@blogger.comtag:blogger.com,1999:blog-35525812.post-1164101882430846732006-11-21T16:38:00.000+07:002006-11-21T16:38:00.000+07:00Thank you boss Soyuz. Feel so happy if someone hel...Thank you boss Soyuz. Feel so happy if someone helped by my writing.mehttps://www.blogger.com/profile/17632487403478487239noreply@blogger.comtag:blogger.com,1999:blog-35525812.post-1164100441371561582006-11-21T16:14:00.000+07:002006-11-21T16:14:00.000+07:00Nice review, Ndri. Well done!Nice review, Ndri. Well done!Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-35525812.post-1163987079385583562006-11-20T08:44:00.000+07:002006-11-20T08:44:00.000+07:00Welcome on board.Thank you so much for your knowle...Welcome on board.<BR/><BR/>Thank you so much for your knowledge shared, I'm very pleased. I think Techno using A.I.R that you mentioned. The system inject fresh air after the valve open as you can see under the bottom of this machine.<BR/><BR/>What I'm thinking is, the bolt position is in the middle of the muffler, not on the front. What I know is, A.I.R working in the best performance when they've put on the front muffler when the smog is out from the combustion chamber. So, the smog can be quickly react with the fresh air especially with the Oxygen and the Hydrogen. The result is cleaner emission.<BR/><BR/>I don't think the engineer would put the A.I.R on the mid muffler. Cause the result would be differ if you put on the front. And it such a weird decission if they has made a hole for the A.I.R, but they unplug it.<BR/><BR/>Getting more interesting.mehttps://www.blogger.com/profile/17632487403478487239noreply@blogger.comtag:blogger.com,1999:blog-35525812.post-1163767438635740682006-11-17T19:43:00.000+07:002006-11-17T19:43:00.000+07:00It's good work ai_zeus.About the bolt on the exhau...It's good work ai_zeus.<BR/>About the bolt on the exhaust pipe, it should be connected with a pipe to the air pump (but it's removed) for the purpose of better emission control. This device called "Air Injection Reactor" (A.I.R.). A.I.R. reduces the products of incomplete combustion (hydrocarbons and carbon monoxide) by injecting fresh air into the exhaust manifolds of the engine near to the exhaust valves. In the presence of this oxygen-laden air, further oxidation occurs in the manifold and exhaust pipe.<BR/><BR/>Generally the air is delivered by pump (sometimes called a 'smog pump') driven from a belt off the engine through tubing and valves to the inlet manifold(s). To prevent backfiring a diverter valve is used. When the engine is coasting this valve vents the air to the muffler (silencer) and at high engine speeds allows excess air to escape through a relief valve. Non-return valves prevent exhaust gasses entering then pump.<BR/>This technology was introduced in 1966 in California, and was in use for the next several decades. It is not generally in use subsequently, having been supplanted by cleaner burning engines and better catalytic converters.<BR/>I saw on the Royal Enfield 500CC (made in India), the classics very old technology, but the brand new made year 2004, with digital ignation and of course the smog pump, etc.... etc...<BR/><BR/>But,,,,,<BR/>There is some debate as to A.I.R. effects on the exhaust valves. Some owners claim that the system has kept their exhaust valves clean and prolonged their life, others have blamed them for burning out valves and seats. This appears to trend with the brand and engine configuration, and may be affected by each implementation.<BR/><BR/>A.I.R. systems have been known to cause exhaust manifolds to glow red (incandesce) due to excess heat.<BR/><BR/>A.I.R. systems cause increased back pressure in the exhaust. Some engine combinations are more sensitive to this then others. Usually higher revving engines or those with high performance cams that include increased valve overlap.<BR/><BR/>A.I.R. systems do cause some parasitic drag on the engine, but despite criticism from many backyard mechanics, they cause very little loss of engine power, typically around 1-2 hp. This amount is unnoticeable except through repeated testing and is incidental to the usual poor tuning in older vehicles. Gains from removal are typically either psychological or due to an improperly maintained system.<BR/><BR/>My opinion, Kymco do the right thing by removing the smug pump.<BR/><BR/>I hope this comment will enrich your information about motorcycle world especially for Kymcos.<BR/><BR/>Keep writing Bro.....<BR/><BR/>Regards from warm city, Jogja.Anonymousnoreply@blogger.com