Engine performance analyzer
Patent 4006403 Issued on February 1, 1977. Estimated Expiration Date: 
February 1, 1994. 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.
February 1, 1994. 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 References 3551800 3572103 3665294 3788129 InventorsAssigneeApplicationNo. 567395 filed on 04/11/1975US Classes:324/384, Using plural tests in a conventional ignition system324/385, Distributor324/399, Wherein a measured electric quantity indicates spark plug condition73/116MOTOR AND ENGINE TESTINGExaminersPrimary: Rolinec, R. V.Assistant: Sunderdick, Vincent J. Attorney, Agent or FirmAbstractAn internal combustion engine performance analyzer is described for providing a numerical value representing certain operating characteristics such as spark plug ionization voltage, points closed voltage drop, alternator ripple output voltage and voltage drop across the starter during cranking. Simple connections to the engine provide the necessary signals to the solid state electronic analyzer. The analyzer includes appropriate switches, converters and a cylinder identification circuit in the form of a ring counter for enabling the several parameters to be conveniently measured and displayed in a digital format. | |
