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Method of periodically attaining the ignition temp. of soot in the exhaust of an IC engine - requires soot filter with heater and flap in front to control back pressure, depending on temp.
Method of periodically attaining the ignition temp. of soot in the exhaust of an IC engine - requires soot filter with heater and flap in front to control back pressure, depending on temp.
A soot filter (3) and/or a catalyser, with a heater in each case, are required and there is also flap (1) in the exhaust controlling the back pressure near the filter (3) depending on the prevailing temp. The back pressure in front of (or inside) the filter (3) and the temp. are continuously measured. Below a certain pressure, the flap (1) is active and furthermore, above and below a predefined temp. the flap (1) is deactivated. The power supply to the heater is also controlled by the sensors. ADVANTAGE- Less energy needed to regenerate the soot filter, thereby increasing overall engine efficiency.
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