Abstract
Novel Additive for Particulate Trap Regeneration
Highlights
The endurance of light-duty diesel vehicles depends on the ability of technologists to solve the crucial problem of particulates
A novel additive based on sodium
rather than the matter adsorbed on soot
Summary
The endurance of light-duty diesel vehicles depends on the ability of technologists to solve the crucial problem of particulates. After a loading period of the trap, the regeneration is triggered thanks to an additional device (burner or heater) [8], without changing engine conditions, up to the point where exhaust backpressure starts to decrease because of soot oxidation. Several studies show the occurrence of what have been called stochastic regenerations elsewhere [4] and [9], due to additives for temperature as low as 200¡C, when the trap is set in a real exhaust, close to the engine This phenomenon is usually detected by measuring the abrupt and random decrease of exhaust backpressure due to particulate burning. They are built with Nextel ceramic fibres compound, promotes the release of CO2, compared to wound around a punched steel tube Such trap is known the CO, indicating a fundamental change in the to be a so-called deep bed filter, which means that the chemical process, because of the lower temperature of matter penetrates inside the porous structure created by reaction. Hydrocarbons, O2 rate, thermal transfers which depend on trap design and fouling pattern
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