29-05-2019, 12:05 AM
(Seda postitust muudeti viimati: 29-05-2019, 12:05 AM ja muutjaks oli Andres.)
No ma läksin kohale enesediagnoosiga "õhupumba laager vist"... vastu tuli 2 päeva hiljem "elektriline õhupump"... mõtlesin, et olen lolliks läinud. Laager vahetatav. Aga kasutusotstarve peaks olema külma mootoriga kiiremini katti soojendada hoopis.
A “rich mixture” (λ<1), i.e. a mixture with excess fuel, is required for starting a cold spark-ignition engine.
Until the catalytic converter reaches operating temperature and Lambda control action starts to take effect, large quantities of carbon monoxide and unburnt hydrocarbons are produced.
To reduce the level of these pollutants, ambient air with a high oxygen content (“secondary-air”) is injected into the exhaust manifold directly downstream of the exhaust valves during the cold starting phase. This results in post-oxidation (“afterburning”) of the pollutants to form carbon dioxide and water.
The heat generated in this process additionally warms the catalytic converter and speeds up the onset of Lambda control action.
A “rich mixture” (λ<1), i.e. a mixture with excess fuel, is required for starting a cold spark-ignition engine.
Until the catalytic converter reaches operating temperature and Lambda control action starts to take effect, large quantities of carbon monoxide and unburnt hydrocarbons are produced.
To reduce the level of these pollutants, ambient air with a high oxygen content (“secondary-air”) is injected into the exhaust manifold directly downstream of the exhaust valves during the cold starting phase. This results in post-oxidation (“afterburning”) of the pollutants to form carbon dioxide and water.
The heat generated in this process additionally warms the catalytic converter and speeds up the onset of Lambda control action.
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