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:
Jun. 28, 2005
Filed:
Jun. 24, 2004
Bruce G. Bunting, Columbus, IN (US);
Paul R. Miller, Columbus, IN (US);
Bradlee J. Stoia, Columbus, IN (US);
S. Arvind Suresh, Columbus, IN (US);
Rod Radovanovic, Columbus, IN (US);
Bruce G. Bunting, Columbus, IN (US);
Paul R. Miller, Columbus, IN (US);
Bradlee J. Stoia, Columbus, IN (US);
S. Arvind Suresh, Columbus, IN (US);
Rod Radovanovic, Columbus, IN (US);
Cummins, Inc., Columbus, IN (US);
Abstract
A system for controlling the temperature of a particulate filter coupled to an exhaust outlet of an internal combustion engine includes a controller responsive to volumetric flow and temperature of exhaust gas to determine a filter regeneration parameter. In a hybrid electric-engine vehicle application, various control strategies are implemented as a function of the regeneration parameter to control exhaust gas temperature suitably for proper regeneration of the particulate filter. Such strategies include shifting the duty cycle of the engine toward lower engine speed operation along lines of constant power output, modifying the ratio of electrical power and engine power and controlling recharging of the battery supplying electrical energy to the vehicle's electric drive motor under vehicle deceleration conditions. In vehicle applications including a transmission coupled directly to the engine, shift points of the transmission are modified as a function of the regeneration parameter to control exhaust gas temperature.