Optical Transmission in Visible and UV Range
The optical probes in the spark plug thread receive the luminosity of the combustion and transmit it through flexible fibre optics to highly sensitive optoelectronic receivers which convert the luminosity into a responding voltage.
The high sensitivity of the system permits the analysis of the combustion even at idle speed and cold start.
Fitting to any mass production spark plug
The special treatment of the spark plug does not change its thermal characteristics significantly because neither the ceramic is harmed nor the heat flow to the outer hull is handicapped.
The robust design of the fibre optic spark plug permits the use even at high temperature and high pressure in mass production engines.
Because of the easy and quick adaptation of the fiber optic spark plug, it is possible to make quick statements about the combustion.
Combustion Details Extracted from Light Signals
The reconstruction of the early flame propagation provides a global understanding of the charge motion and allows the analysis of the ignition various operating conditions.
Especially the burning conditions in lean combustion can be analyzed. The signals of the probes can also be used for knock- and misfire-detection.