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مکانیک::
موتور اشتعال-جرقه ای
The temperature of exhaust gas in a spark-ignition engine can vary from 300 to 400°C during idle to about 900°C at high-power operation.
Spark-ignition engines usually operate at fuel/air equivalence ratios between about 0.9 and 1.2 (see Sec. 7.1).
It is only feasible in spark-ignition engine exhausts.
Use of catalysts in spark-ignition engines for CO, HC, and NO removal has become widespread.
The catalytic converters used in spark-ignition engines consist of an active catalytic material in a specially designed metal casing which directs the exhaust gas flow through the catalyst bed.
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