標準號：SAE AIR 77-1998
中文標準名稱：采用示波方法進行火花能量測量
英文標準名稱：Spark Energy Measurements Using Oscilloscopic Methods
發布日期：1998/12/1 12:00:00
實施日期：1999/12/31 12:00:00
國際標準分類號：49.050
適用范圍：The voltage-current method of determination of spark energy is satisfactory and informative. Readings may be taken in a minimum amount of time (after the initial system set up) and give the total electrical energy in the arc stream. It is of no significance whether this energy is later transformed to light, heat or sound because the actual causes of ignition are not confined to any one of these forms. The total useful energy i smeasured in its most basic form. Energy dissipated as heat in the plug shell, center conductor and semi-conductors, if present, is not measured by this method. This means that non-contributing energy is eliminated from the results.