Anti knocking regulator AKR 3
DEIF’s anti knocking regulator (AKR 3) is a state-of-the art unit with knocking sensing based on single cylinder detection.
For correct knocking sensing, the AKR 3 uses digital FFT (fast fourier transformation) to break down vibration data into individual frequencies and individual levels.
The use of FFT enables the AKR 3 to create an engine “image”, which represents the frequencies and levels produced by the normal engine state, inlcuding gear wheel noise, bearing noise, normal combustion noise etc.
Filtering the “image” frequencies precisely highlights knocking frequencies for monitoring and taking action when needed.
In combination with the DM 400 Gas and communication to the ignition system, the AKR 3 offers the possibility to control the ignition-firing angle for each individual cylinder and thereby prevent knocking without having to decrease the genset power output.
- Individual cylinder-knocking monitoring for up to 24 cylinders
- J1939 communication to controller
- Digital alarm outputs
Integrated systems DM 400 gas
- Gas engine and generator control, protection, synchronising and load sharing for both active and reactive power
- Mains protection including loss of mains detection
- Control of aux systems: gas mixture and gas circuit, air circuits/exhaust gas, cooling circuits/ emergency coolers, heating circuits etc