Knock sensors are devices used in internal combustion engines to detect engine knock or detonation. The knock sensor detects vibrations and sends a signal to the engine control module (ECM), to ...

Topaz, quartz, tourmaline, and other materials are capable of producing electricity when they experience vibrations. These are called piezoelectric materials. This brings us to the subject of today's ...

A simple set-up for quick and purely electrical QC testing of knock sensors is described in this paper. The main goal is to measure the "impedance" frequency response function of the sensors. The ...

Dyno tuning is great. But, a dyno-tuned engine can't always be tuned for the stress it might see on the street, let alone something like the continued abuse of, say, a track day. This is especially ...

A cylinder pressure time history has long been used as an indication of the performance of internal combustion engines. Recently the use of cylinder pressure has been proposed for the knock adaptive ...