Even a single plug thread exposed in an engine's combustion chamber will raise electrode temperatures quite markedly. That could be a real problem as engine makers don't hold plug-hole depths to close tolerances, and the near-universal adoption of crushable plug washers gives the user a chance...
The design protects the Spark Plug Electrode from the RF arc. Residual RF is suppressed by leading the HV Ignition Cable through several Toroidal RF Ferrite Rings. Sign in to download full-size image Picture 1. Arc Igniter - used and unused...
Consider for a moment what happens when a spark plug fires. The spark is created when high voltage supplied by the ignition coil jumps across a small air gap between the plug electrodes. The high voltage surge from the coil goes down the plug center electrode, ionizes the air between the ...
With a traditional center electrode being the most common, it is a ‘J’ design coming from the side of the plug and looping over the center of the tip of the plug for optimum spark. Double Fine Wire (DFE) Adding a thin wire to both the pin on the electrode tip and in the center ...
Champion had a high-voltage spark plug in his mind, and set out to find a way to make it work. He experimented with different alloys for electrodes and developed electrode shapes that could dissipate heat generated through an electric arc during ignition. He also came up with coating materials...
This paper examines the relationship between the magnitude of the heat flux to the spark plug ground electrode, averaged over an 80掳 crank angle (CA) of early compression stroke, and the initial burning rate, defined as the CA at which 5% of mass is burned. The heat flux was measured ...
spark plug location, spark plug electrode(s) orientation and spark gap; and operational sources—engine speed, load and ignition system performance [1,2,3,4,12,13]. Many of the experimental works quantify CCV by computing the coefficient of variation (CoV) in one or more easily measured met...
electrode to the plug shell creates two paths for heat to flow away from the tip. The end electrode is made of a special high temperature Inconel alloy. In the center of the "U" is a small platinum pad to reduce electrode wear when the plug fires. The center electrode is also platinum...
particulates adhering to the discharge electrode member124can be burned and removed. Therefore, in the case where the particulate sensor2is judged to be anomalous because particulates have adhered to the discharge electrode member124and have lowered the detection performance of the detection section, th...
electrode 3 is the end side of a ground electrode 4 fixed to the end of the plug body 1, and a spark gap 7 is provided between the two electrodes. A space portion 6 is defined by the leg portion 2a of the insulator 2, the plug body 1 and the packing 5 and it opens to the ...