in response to a number of recent questions, I translated/summarised this from a French website. Merci!
Notes
1. the data appears to be from 2002
2. Search on cérine (ctrl+Alt+E for the accent)tells you
it is CEO2- oxide of Cerium and gives more info - not usually in English.( if someone pays me , I can follow up!)
"In the presence of oxygen, the filter regenerates itself by burning off deposits when the exhaust gas temperature exceeds 550C. This is a long way from the classic HDI motor, where the temperature in town rarely exceeds 150-200C
The filter regeneration is controlled by the engine control software. A sensor checks the deposits on the filter and starts the regeneration where necessary.
This takes place by means of post-combustion which raises the exhaust gas temperature to 450°-500° C at the input to the filter.
A complete regeneration takes 2 to 3 minutes. It takes place every 400-500km.
The common rail system allows the exhaust gas temperature to be increased by more than 300C. A post-injection of fuel allows an increase of 200-250C; matched by a second injection from the catalyst which treats these unburnt hydrocarbons and raises the temperature by 100C.
To reach the combustion threshold, the fuel is additived with Eolys®, a compound based on cerine developed by Rhodia, which lowers the combustion of the particles by around 100°C to 450°C.
The cerine is held in organic solution in an additional reservoir near the petrol tank.
It consists of :
? A detector in the additive reservoir with low fluid warning
? An injection system to load the main fuel tank
? A dedicated calculator to manage the additive process
? A fuel cap with microswitch,. When the cap is removed, the system detects the additive level before and after filling, and dispenses the proportional amount of Eolys additive into the fuel tank.
For a fill-up of 60 litres the system injects 37.7ml of solution containing 1.9g of serum.
The additive reservoir has a capacity of 5 litres, which is good for 80000km (50000 miles).
The tank is refilled by dealers at the same time as the filter is cleaned.
The filter is effective for the whole life of the vehicle. A pressure wash using water is carried out every 50000 miles by dealers to remove the serum deposits.
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Definitions :-)
Cerium
n. Symbol Ce
A lustrous, iron-gray, malleable metallic rare-earth element that occurs chiefly in the minerals monazite and bastnaesite, exists in four allotropic states, is a constituent of lighter flint alloys, and is used in various metallurgical and nuclear applications. Atomic number 58; atomic weight 140.12; melting point 795°C; boiling point 3,468°C; specific gravity 6.67 to 8.23; valence 3, 4.
Ceria (sē´rĭ`å)
n. 1. (Chem.) Cerium oxide, CeO2, a white infusible substance constituting about one per cent of the material of the common incandescent mantle.
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ah intersting Mr Bond. Now then, where exactly is this filter on a 51 plate 406 2.2 HDI & how do i get it out please?
--
www.bayingbasset.com
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Good grief, sounds more like the tri-ethyl borane afterburner light-up system on a Lockheed SR71 Pratt and Whitney J58. Whatever happened a good old single SU carby?
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