Procedure for obtaining the corrected heat-rating values (indicated mean effective pressure, IMEP) of spark plugs rated in the SAE 17.6 cubic inch rating engine (SAE AS840).
This report includes a procedure for typical pulse voltage measurement using the pressurized ball gap, calibration procedure, and a description of the pressurized ball gap.
This report covers the use, electro-mechanical description, and accuracy of a pulse generator in the range of 5 to 30 kilovolts and zero to peak voltage time of less than 1.0 microsecond.
These specifications contain general information pertaining to the sparking voltage parameter of shunted surface gap spark igniters; test equipment circuitry; bill of materials for test equipment; test equipment operation.