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:
Aug. 02, 1983
Filed:
Jul. 24, 1981
Kashmir S Virk, Hopewell Junction, NY (US);
Texaco Inc., White Plains, NY (US);
Abstract
Method for rejuvenating the exhaust gas filter for a diesel engine in which the engine's power output can be varied by eliminating the function of one or more cylinders during a period of engine operation. Said method includes immobilizing at least one, and preferably a number, of the engine's cylinders by maintaining the respective intake, and optionally the exhaust valves, in a fixed position. When exhaust gas is at a relatively low temperature, particle incineration is achieved by periodically injecting a small amount of fuel into the immobilized cylinder. The fuel is carried by the exhaust gas stream into the filter, where it is contacted by a catalyst bed to ignite the gas and to thereby raise it to a sufficient temperature to ignite retained combustible particles.