Spark plug boot
View Patent ↗A spark plug boot having a resistive element for reducing levels of EMI. The spark plug boot generally includes a spark plug receiving end, a resistive element portion, an ignition wire connecting end, and a conductive metal shell. The spark plug boot may also include one or more elbows, which changes the positional relationship between the spark plug receiving end and the ignition wire connecting end.
1. A spark plug connector that electrically connects an engine ignition wire to a spark plug, comprising:
a wire end, including
a wire connector configured to be electrically connected to an ignition wire;
a resistive element having a resistive element therein;
a wireless electrical connector that is electrically connected between the wire connector and the resistive element;
a plug end, including
a spark plug coupler configured to be coupled to a spark plug;
a wireless intermediate terminal configured to electrically connect the resistive element to the spark plug coupler, wherein the wireless intermediate terminal is disposed at a 90 degree angle to the resistive element;
a first insulating layer disposed around the resistive element and the wire connector;
a second insulating layer disposed around the first insulating layer and around the spark plug coupler; and
a metal casing disposed over at least a portion of the second insulating layer.
2. The spark plug connector of claim 1 , wherein the resistive element is a wire-wound resistor.
3. The spark plug connector of claim 1 , wherein the wire connector includes a male connector member, and a female connector member that snaps onto the male connector member.
4. The spark plug connector of claim 1 , wherein the first insulating layer is made from a material including polybutylene terephthalate.
5. The spark plug connector of claim 1 , wherein the first insulating layer is made a glass-filled thermally insulating material.
6. The spark plug connector of claim 1 , wherein the second insulating layer includes silicon.
7. The spark plug connector of claim 1 , wherein the wire connector and the spark plug coupler are substantially parallel to each other and lie in the same plane.
8. The spark plug connector of claim 7 , wherein the spark plug connector is generally U-shaped.
9. The spark plug connector of claim 1 , wherein the wire connector and the spark plug connector are each angled with respect the resistive element.
10. The spark plug connector of claim 1 , wherein the wire connector and the spark plug connector do not lie in the same plane.
11. The spark plug connector of claim 1 , wherein the wire end is transverse to the plug end, and wherein the wire end and the plug end do not lie in the same plane.
12. The spark plug connector of claim 1 , wherein the wire end, the plug end, and the resistive element are all transverse to each other.
13. The spark plug connector of claim 1 , wherein the metal casing includes a receptacle housing at one end.