| US 7,448,358 B2 | ||
| Ignition timing control system for light duty combustion engines | ||
| Martin N. Andersson, Caro, Mich. (US); Kevin P. Born, Cass City, Mich. (US); Michael P. Burns, Millington, Mich. (US); and George M. Pattullo, Caro, Mich. (US) | ||
| Assigned to Walbro Engine Management, L.L.C., Tucson, Ariz. (US) | ||
| Filed on Apr. 03, 2007, as Appl. No. 11/732,311. | ||
| Application 11/732311 is a continuation of application No. 11/211835, filed on Aug. 25, 2005, granted, now 7,198,028, filed on Apr. 03, 2007. | ||
| Application 11/211835 is a continuation in part of application No. 10/765415, filed on Jan. 27, 2004, granted, now 7,000,595, filed on Feb. 21, 2006. | ||
| Application 10/765415 is a continuation in part of application No. 10/186522, filed on Jul. 01, 2002, abandoned. | ||
| Claims priority of provisional application 60/306381, filed on Jul. 18, 2001. | ||
| Prior Publication US 2007/0181099 A1, Aug. 09, 2007 | ||
| Int. Cl. F02P 5/15 (2006.01); F02M 3/00 (2006.01) | ||
| U.S. Cl. 123—399 [123/406.45; 123/406.57] | 10 Claims |
| 1. A method for controlling a light duty, non-automotive combustion engine, the method comprising the steps of:
(a) determining if the light duty, non-automotive combustion engine is in a part throttle condition;
(b) initiating a part throttle sequence if the light duty, non-automotive combustion engine is in the part throttle condition,
wherein the part throttle sequence generally encourages the engine to leave the part throttle condition by manipulating the
ignition timing of the engine; and
(c) exiting the part throttle sequence if the light duty, non-automotive combustion engine is no longer in the part throttle
condition.
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