Ignition system for internal combustion engines
First Claim
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1. An ignition system for an internal combustion engine having at least one cylinder wherein combustion of a fuel/air mixture supplied thereto is initiated by a spark generated by a corresponding spark plug when an ignition current is supplied thereto from a power supply, the ignition system comprising:
- sensor means for sensing commencement of said combustion in each said cylinder and generating a corresponding combustion signal indicative thereof; and
timing means connected to each said sensor means and said corresponding spark plug, said timing means further connected to said power supply for selectively permitting said ignition current to flow from said power supply to each said spark plug, said timing means discontinuing said flow of ignition current to each said spark plug upon the occurrence of the earlier of the expiration of a predetermined time period and receipt of said corresponding combustion signal.
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Abstract
The invention provides sparkplug firing on-time control in a manner to prevent misfiring, by detecting one of the onset of combustion or a predetermined time after the onset of spark firing, and then discontinuing the sparkplug firing. This insures no misfiring and more efficient use of the ignition system by avoiding unnecessary sparkplug firing once combustion is initiated.
12 Citations
12 Claims
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1. An ignition system for an internal combustion engine having at least one cylinder wherein combustion of a fuel/air mixture supplied thereto is initiated by a spark generated by a corresponding spark plug when an ignition current is supplied thereto from a power supply, the ignition system comprising:
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sensor means for sensing commencement of said combustion in each said cylinder and generating a corresponding combustion signal indicative thereof; and timing means connected to each said sensor means and said corresponding spark plug, said timing means further connected to said power supply for selectively permitting said ignition current to flow from said power supply to each said spark plug, said timing means discontinuing said flow of ignition current to each said spark plug upon the occurrence of the earlier of the expiration of a predetermined time period and receipt of said corresponding combustion signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification