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English to Arabic translations [PRO]
Tech/Engineering - Mechanics / Mech Engineering | | English term or phrase: Lightoff | | As an example, high temperatures are required to regenerate diesel particulate filters, to initiate and to sustain light-off condition for oxidation catalysts. |
|  Sayyed SolimanKudoZ activityQuestions: 1 (none open) Answers: 32
Egypt
| | Local time: 14:52
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| | درجة حرارة الانصهار أو التنشيط | Explanation:
أو درجة حرارة الاحتراق
You can say:
درجة حرارة تنشيط محفز الأكسدة
Light off temperature is an industry buzzword. All it really means is the temperature at which your converter will meltdown, and potentially cause a blowtorch effect in your muffler.
This reduces the engine runtime needed for the catalytic converter to reach its "light-off" or operating temperature.
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Note added at 26 mins (2012-02-09 17:28:24 GMT)
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These reactions depend on the temperature and the composition of the exhaust gas. When the engine is started, the exhaust gas gradually heats up until it is warm enough to initiate the catalytic reactions. Once the ‘light-off’ temperature is reached, CO oxidation reactions typically start first, followed then by HC oxidation. However, NO requires higher reduction temperatures. (Heck & Farrauto 1996, Lox & Engler 1997)
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Note added at 26 mins (2012-02-09 17:28:34 GMT)
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http://herkules.oulu.fi/isbn9514269543/html/i1003460.html |
| Selected response from:
 Hani Hassaan
Egypt
Local time: 14:52
| Grading comment | 4 KudoZ points were awarded for this answer |
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| Discussion entries: 0 |
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The translation workplace 
