The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 14, 2014
Filed:
Aug. 02, 2011
Bryan Nathaniel Roos, West Bloomfield, MI (US);
Eugene V. Gonze, Pinckney, MI (US);
Halim G. Santoso, Novi, MI (US);
Brian L. Spohn, Holly, MI (US);
Bryan Nathaniel Roos, West Bloomfield, MI (US);
Eugene V. Gonze, Pinckney, MI (US);
Halim G. Santoso, Novi, MI (US);
Brian L. Spohn, Holly, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A method of treating emissions from an internal combustion engine of a hybrid vehicle includes directing a flow of air created by the internal combustion engine when the internal combustion engine is spinning but not being fueled through a hydrocarbon absorber to collect hydrocarbons within the flow of air. When the hydrocarbon absorber is full and unable to collect additional hydrocarbons, the flow of air is directed through an electrically heated catalyst to treat the flow of air and remove the hydrocarbons. When the hydrocarbon absorber is not full and able to collect additional hydrocarbons, the flow of air is directed through a bypass path that bypasses the electrically heated catalyst to conserve the thermal energy stored within the electrically heated catalyst.