4 ms·
Modern engines (as in, post 1989) will sense an engine knock (or a misfire) and go into open cycle ECU mode, ignoring the lambda sensor inputs. It'll run really
by semi-extrinsic 10y ago
Modern engines (as in, post 1989) will sense an engine knock (or a misfire) and go into open cycle ECU mode, ignoring the lambda sensor inputs. It'll run really rough and rich in order to avoid any more knocking, which could seriously damage the engine.
- fgonzag 10y agoAnd to those curious on how it senses it, they literally stick a microphone in the engine calibrated for the ping (knock) frequency.
- sdwisely 10y agothat actually sounded like such a low tech solution that I wasn't sure if it was some kind of joke that was going over my head. Thanks for sharing, that's actually really fascinating. the patent for anyone interested: https://www.google.com/patents/US4040294 https://www.google.com/patents/US4040294