DEMONS: DATA ENGINE MANAGEMENT ON STEROIDS Engine Sensors - In order to provide the correct amount of fuel and spark for every operating condition, the engine control unit (ECU) has to monitor a number of input sensors. Here are just a few:
Dashboard This screen emulates your cars instrument panel. Set your marker and click dashboard in the menu bar. All your sensors will be displayed with their applicable values at that moment in time set by your marker. KAM software can display live data. When linked to a running car you can open the dashboard to monitor all your sensors in real time. Button Parameters Data screen setup is all done here. Each sensor's output is graphically displayed on the screen. You can change the color, screen scale, and line type for each sensor's display. Configuration Panel DEMONS is capable of monitoring almost all OEM and after-market engine sensors. Here is where you would configure the system by entering the your sensors specifications according to the manufacturer. On the right side of the image below you can see where you would select which sensors will be display on the data screen. Main Fuel Table This is sometimes refered to a fuel MAP, not to be confused with the manifold absolute pressure sensor mentioned above. Each square represents a cell. Each cell can be configured independantly. Highlighted cell indicates that when our engine is at 2000 rpm and our manifold press is 21.26 MAP we want to be injecting 303 lbs/hr of fuel.
Atmospheric air pressure is often given in millibars where "standard" sea level pressure is defined as 1013.25 mbar (hPa), equal to 1.01325 bar, around 14 psi. EGT Fuel Override DEMONS system compensates each cylinder based on exhaust gas temperature (EGT). In the screen shot below you can see we have disabled the EGT override until exhaust temperature is over 1060 degrees. Once temperature exceeds 1060 KAM will use up to 25% more fuel above the main fuel lookup table value for that cell to lower the temperature. This fuel enrichment is on a linear scale from 1060 to 1130 degress EGT. If our EGT exceeds 1400 KAM will lower the temperature by turning off the fuel and spark. O2 Table Using the O2 table you can enrich or lean the air fuel mixture as necessary with a O2 sensor in each header tube. Each cell in this table is the desired ratio at a given rpm. In this screen shot we are telling the DEMONS system to add up to 4% more fuel or remove 3% fuel to maintain 4.88 air fuel ratio at 6900 rpm with a 79.02 MAP. Cylinder Balance Control Based on engine performance you can adjust individual cylinders in the cylinder balance table to compensate for any air/fuel irregularites in the intake manifold. Engine Timming The DEMONS system has five different timing tables one for each gear and also one for staging . The last RPM row of the timing table will be your rev limiter for that event. Error And Controls DEMONS also logs errors and all control functions. For example in this screen shot note the following conditions logged by the DEMONS system.