Multicharge implementation to maximize rate of energy delivery to a spark plug gap
July 22, 2019. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesIgnition system for internal combustion engine Ignition system with repetitive sparks Ignition system for two cycle engine Induction discharge type ignition device for an internal combustion engine Ignition system for internal combustion engines Electronic ignition system for internal combustion engines and method for controlling the system Method and apparatus for producing electrical discharges Multi spark ignition system Patent #: 6032657 InventorsAssigneeApplicationNo. 359185 filed on 07/22/1999US Classes:123/625, Responsive to engine or environmental condition123/637, System fires single spark plug per cylinder123/644Current or voltage sensing in coil primaryExaminersPrimary: Argenbright, Tony M.Attorney, Agent or FirmInternational ClassesF02P 003/05F02P 005/15 AbstractAn ignition control system for an internal combustion engine includes a control circuit, an ignition coil, a switch, and a sensing circuit. The control circuit is configured to interrupt a primary current, thereby establishing a secondary current which is discharged to cause a spark plug coupled to the secondary winding to produce a first spark. The sensing circuit is configured to generate a secondary current signal representative of a level of secondary current. The control circuit is responsive to the secondary current signal to terminate the discharge by closing the switch to cause the primary current to again flow in preparation of a second spark. The termination of the discharge occurs when the secondary current level reaches a secondary current threshold which is determined as a function of engine speed and ambient temperature. | |
