The invention provides a monitoring system for monitoring an internal combustion engine. The monitoring system includes a power source having a winding and a magnet that magnetically interacts with the winding to generate a winding signal. The monitoring system further includes a conditioner that conditions...http://www.google.fr/patents/US6542074?utm_source=gb-gplus-shareBrevet US6542074 - Monitoring system for an internal combustion engine
Monitoring system for an internal combustion engine