Ignition coil assembly with spark plug connector

An ignition coil assembly for direct mounting onto a spark plug and for providing an electrical connection with a spark plug terminal of the spark plug, the ignition coil assembly comprising:

• a body having a spark plug boot section, the boot section formed of an elastic material and having a cylindrical interior longitudinally extending passageway of a generally constant diameter opening at an orifice, the body having a coil terminal extending into the boot section passageway;
• a high voltage connection coil spring placed within the boot section passageway through the orifice, the spring having a center section having multiple turns of wire wrapped at a generally constant bending radius such that the spring has an outside diameter less than the inside diameter of the passageway, the spring further having two opposing end segments wrapped at a smaller diameter than the center section, the spring end segments contacting the spark plug terminal and the coil terminal when the ignition coil assembly is installed on the spark plug with the spark plug extending inside the passageway and compressing the spring;
• and
• at least one rib formed by the passageway for engaging the spring center section and retaining the spring within the boot passageway when the ignition coil assembly is not installed on the spark plug but is positioned longitudinally in the passageway such that the rib disengages the spring when the ignition coil assembly is mounted onto the spark plug thereby compressing the spring and pushing the spring away from its engagement with the rib.

An ignition coil assembly for direct mounting onto a spark plug and for providing an electrical connection with a spark plug terminal of the spark plug, the ignition coil assembly comprising:

• a body having a spark plug boot section, the boot section having an interior longitudinally extending passageway opening at an orifice, the body having a coil terminal extending into the boot section passageway;
• a high voltage connection coil spring placed within the boot section passageway through the orifice, the spring having a center section having multiple turns of wire and having two opposing end segments wrapped at a smaller radius than the center section, the spring end segments contacting the spark plug terminal and the coil terminal when the ignition coil assembly is installed on the spark plug with the spark plug extending inside the passageway and compressing the spring;
• and
• at least one rib extending radially inwardly within the passageway for frictionally engaging the spring center section when the spring is installed in the passageway but is positioned longitudinally in the passageway such that the rib disengages the spring when the ignition coil assembly is mounted onto the spark plug thereby compressing the spring and pushing the spring away from its engagement with the rib.