Pressure and torque versus crank angle data for common SI and CI engines

[randini]

Looking for pressure and torque versus crank angle curves for common SI and CI engines. I would like to compare common engine data to study the torque vs pressure lag resulting from poor moment arms of the reciprocating engine platform. Any one-stop place for this?

Also we are working on a type of power producing machine that utilizes true constant volume combustion. Any experimental data on maximum pressures from C8H18 and C12H23 under constant volume (bomb) conditions. It would be great to get data based on changing compression ratios (bar) and mass of fuel/air per container volume under stoichiometric conditions. I don't need a whole lot of data (the more the better) but would be happy with one example of a C8H18 or C12H23 combustion in an enclosed container (preferably at a common compression ratio and stoichiometric conditions).

I cannot use common pressure maximums from normal curves that assume the combustion process is constant volume because at TDC the volume doesn't change for a small period of time. I expect maximum pressures under true "bomb" conditions to be much higher than those recorded in common pressure vs. crank angle curves. Any data for these fuels under true CV conditions?

Thanks,

Randy