Ignition plug for an internal combustion engine provided with an

Details Ignition plug for an internal combustion engine provided with an Ignition plug for an internal combustion engine provided with an

1991-09-24

1993-01-19

Strecker, Gerard R.

Electricity: measuring and testing

Internal-combustion engine ignition system or device

In situ testing of spark plug

324402, 324464, 313141, G01N 2770, G01M 1902, H01T 1322

Patent

active

051809834

ABSTRACT:
An ignition plug for an internal combustion engine includes an ionization current detector electrode 20 adapted to be coupled to an external ionization detector circuit. Preferably, the ionization current detector electrode extends through a lateral through-hole formed vertically through an expanded portion of the electrical insulator 3. The lower end of the ionization current detector electrode may extend into the combustion chamber by a predetermined length. Further, the lower end of the ionization current detector electrode exposed to the fuel/air mixture within the combustion chamber may form a cylindrical grid to increase the contact area with the combustion gas.

REFERENCES:
patent: 5087882 (1992-02-01), Iwata

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