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. 21, 2006
Filed:
Jan. 27, 2004
Martin N. Andersson, Caro, MI (US);
Kevin P. Born, Cass City, MI (US);
George M. Pattullo, Caro, MI (US);
Eric G. Zbytowski, Caro, MI (US);
Martin N. Andersson, Caro, MI (US);
Kevin P. Born, Cass City, MI (US);
George M. Pattullo, Caro, MI (US);
Eric G. Zbytowski, Caro, MI (US);
Walbro Engine Management, L.L.C, Tucson, AZ (US);
Abstract
A control system for a low cost, light duty combustion engine, where the control system generally utilizes engine speed and/or temperature input signals and independent operating sequences to determine a desired ignition timing and air-to-fuel ratio for a combustible mixture. There are several independent operating sequences, each one of which is designed to optimally control the engine under certain conditions. These operating sequences include a Cranking sequence that commences after the engine is initially turned on, a Warm Up sequence which follows the Cranking sequence, a Normal Mode sequence for typical operating conditions, an Acceleration sequence for certain increases in engine speed, a Come Down sequence for when a sufficient engine speed is followed by a certain decrease in speed, and a Recovery Bump sequence for when the engine speed dips below a predetermined level.