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AssigneeGarrett Transportation I Inc.
InventorsMalay Maniar, Jens Keuler, Surya Yadla
Estimating the term…
In an internal combustion engine system having an emissions control system including an electrically heated catalyst (E-cat) and an E-compressor (either standalone or part of an E-turbocharger), a method for operating the emissions control system includes predicting that a cold start of the engine is imminent, activating the E-cat and the E-compressor in response to the prediction, and monitoring a characteristic parameter Pe of the E-cat as it changes. The E-compressor speed Nc is regulated to change in proportion to the changing Pe while the E-cat is activated. If no engine start occurs, the E-cat is deactivated, and speed Nc is regulated to track the changing Pe.
A method for operating a secondary emissions control system in an exhaust system of an internal combustion engine (ICE), the secondary emissions control system including an E-cat comprising a catalyst and an electrical heating device proximate the catalyst, and further including an E-compressor comprising a compressor operably coupled with an electric motor for rotatably driving the compressor, the E-compressor being arranged to supply air to the E-cat, the method comprising the steps of:
A method for operating a secondary emissions control system in an exhaust system of an internal combustion engine (ICE), the secondary emissions control system including an E-cat comprising a catalyst and an electrical heating device proximate the catalyst, and further including an E-compressor comprising a compressor operably coupled with an electric motor for rotatably driving the compressor, the E-compressor being arranged to supply air to the E-cat, the method comprising the steps of:
Dependencies are inferred from the claim text.