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:
Apr. 15, 1997
Filed:
Jul. 28, 1994
Mitchell C Hillsberg, Burlington, CT (US);
Paul J Rothman, Windsor, CT (US);
United Technologies Corporation, Windsor Locks, CT (US);
Abstract
An electronic ignition system for a reciprocating engine includes a pre-ignition prevention control sub-system which acts as an independent monitor system to ensure the ignition system can only command a spark plug to fire when the next cylinder to fire is outside its pre-ignition zone. The pre-ignition prevention sub-system is independent from the circuitry which commands the spark plug to fire to ensure a single point failure of the system can not lead to a controller erroneously commanding a spark plug to fire in the pre-ignition prevention sub-system. An advantage of the present invention is the increased safety the pre-ignition prevention sub-system provides to the engine by significantly reducing the likelihood that fuel/air mixture within a cylinder will be ignited prematurely.