In today's common internal combustion engines exist a crankshaft associated with mechanical wear and efficiency losses. In the free piston engine hydraulic pump I am working on there is a "virtual" crankshaft to control the piston's motion. While the fuel's combustion creates the accumulation of hydraulic power, the controls system is powered by a small percent of the built up hydraulic power. Currently we are running test on the engine with combustion in only one chamber to attain the optimal control system gains. Ultimately, we want to be able to run the engine continually with disturbances such as misfiring.
Specifically, I have been assigned to attempt to modify the current heat release calculations. We desire this because we are finding fluctuations in the heat release when there should not be; graphs show heat release with no combustion. Using the pressure, temperature, and position sensors, I am trying to find a calculation that is more consistent with the theoretical model. This is difficult as there could be many variable attributing the heat release calculation.
So that's where my research is at now. Hopefully I end up with something to implement into our data analysis.
Have a good week!
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