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:
Dec. 19, 1989
Filed:
Aug. 23, 1988
Dieter Goerlich, Emmering, DE;
Webasto AG Fahrzeugtechnik, Stockdorf, DE;
Abstract
A process for operating an exhaust gas burner that can be used particularly in the regeneration of soot filters or the like, in which the exhaust gas burner is turned on to start the regeneration or the like only if the oxygen content in the exhaust gas has a sufficiently high value to readily support ignition. For this determination, recourse is, preferably, had to the instantaneous values of engine performance characteristics reflective of the presence of a high oxygen content in the exhaust gas, e.g., a low engine speed and/or low average pressure valve of the engine. For the determination, the accelerator position and/or the revolutions per minute of the internal combustion engine can be monitored. In the device, a control device is connected, upstream from the turning-on device of the exhaust gas burner, that activates the turning-on device only if the oxygen content in the exhaust gas has a sufficiently high value. For this purpose, the control device can be connected to a detection device that obtains appropriate data from sensors for predetermined engine-operation parameters.