أهمية محول الحفز فى الشكمان Catalytic Converter

**original** · 14-01-2008 11:18 PM

04b.jpg
A catyltic converter uses a catalyst to convert three harmful compounds in car exhaust into harmless compounds.
The compounds are: hydrocarbons (in the form of unburned gasoline), carbon monoxide (formed by the combustion of gasoline) and nitrogen oxides (created when the heat in the engine forces nitrogen in the air to combine with oxygen).
In a catalytic converter, the catalyst (in the form of platinum and palladium) is coated onto a ceramic honeycomb or ceramic beads that are housed in a muffler-like package attached to the exhaust pipe. The catalyst helps to convert carbon monoxide into carbon dioxide. It converts the hydrocarbons into carbon dioxide and water. It also converts the nitrogen oxides back into nitrogen and oxygen

Catalytic.jpg

**ahmed** · 14-01-2008 11:23 PM

هوة ده بقى المحول الحفاز اللى عشانة لازم يتحط بنزين 92 وفى ناس بتشيلة وتحط علبة شكمان صح؟

**original** · 14-01-2008 11:36 PM

الماده اللى بتنضف دورة البنزين كمان بتنضف محول الحفز بس يفضل تتحط فى التنك وتسافر بالعربيه عشان تنضف الدورة بتاعة البنزين كويس

**ahmed** · 14-01-2008 11:51 PM

هوة مش ممكن الكلام ده يترجم بالعربى!

**original** · 15-01-2008 07:36 AM

Since January 1993 all new cars sold in the European Union (EU) have to be fitted with a catalytic converter. This is made up of a very thin layer of platinum group metals on a honeycomb structure (see Figure 4.1). As the exhaust gases pass through the catalyst a chemical reaction occurs which converts carbon monoxide (CO), hydrocarbons (HC) and oxides of nitrogen (NOx) to less harmful compounds (water, nitrogen and carbon dioxide). To work most effectively a catalytic converter needs to reach an optimum temperature. It may not reach this in a short journey. Devices to pre warm the catalyst are being developed which will improve the overall performance of catalytic converters.

The use of catalytic converters leads to a dramatic reduction in the emissions of CO, HC and NOx. However, they also result in an increase of CO2 emissions which do not cause a problem for urban air quality but do contribute to global warming.

**original** · 05-07-2008 06:34 PM

ليه قانون البيئة مش بيفرضه عند ترخيص العربيات الجديدة؟؟؟

**Ahmed Samy** · 05-07-2008 06:50 PM

لما نبطل حرق زبالة في الشوارع

و نبطل حرق قش الرز على الطريق عيني عينك

ممكن نفكر في المحول الحفاز

ده مش انهزامية .أنا باتكلم بجد

لسة بدري علينا لما نوصل للعقلية اللي مكن تفرض ده على الناس و الناس يتقبلوه