EXHAUST EMISSION CONTROL
A method of operating an internal combustion engine (20) in order to improve the control of the level of emissions in the exhaust gases, comprising the steps of, at least when the engine (20) is operating under idle and/or low load conditions at a temperature below a predetermined value, applying a...
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Main Author | |
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Format | Patent |
Language | English French |
Published |
24.10.2000
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Edition | 5 |
Subjects | |
Online Access | Get full text |
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Summary: | A method of operating an internal combustion engine (20) in order to improve the control of the level of emissions in the exhaust gases, comprising the steps of, at least when the engine (20) is operating under idle and/or low load conditions at a temperature below a predetermined value, applying a parasitic load to the engine (20) to increase engine fuel demand, and increasing fueling rate to the engine (20) in response to said engine fuel demand to thereby raise the temperature of the exhaust gases. The method may further comprise the steps of raising the temperature of the air being inducted into the engine (20) and/or directly heating a catalyst (25) in the engine exhaust system (24), conveniently by respective heater elements (23, 25) coupled to an alternator (27) driven by the engine (20). |
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Bibliography: | Application Number: CA19912075939 |