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:
Feb. 08, 2011
Filed:
May. 06, 2009
Michael Livshiz, Ann Arbor, MI (US);
Jeffrey M. Kaiser, Highland, MI (US);
Christopher R. Graham, Lake Orion, MI (US);
Christopher E. Whitney, Highland, MI (US);
Robert Francis Semrau, Ovid, MI (US);
Brian D Francis, Fenton, MI (US);
Michael Livshiz, Ann Arbor, MI (US);
Jeffrey M. Kaiser, Highland, MI (US);
Christopher R. Graham, Lake Orion, MI (US);
Christopher E. Whitney, Highland, MI (US);
Robert Francis Semrau, Ovid, MI (US);
Brian D Francis, Fenton, MI (US);
Abstract
A control system is provided and includes a catalyst module that generates a multi-mode enable signal based on a catalyst light off enable signal. A transition control module controls transitions between a single pulse mode and multi-pulse mode based on the multi-mode enable signal. The transition control module receives a first torque signal and generates a second torque signal based on the first torque signal. The engine torque control module generates an air per cylinder signal, a throttle area signal, and a spark timing signal based on the second torque signal. The single pulse mode is associated with a single fuel injection pulse per combustion cycle. The multi-pulse mode is associated with multiple fuel injection pulses per combustion cycle.