Patent ID: 7606655

Claim:
An engine control system utilizing cylinder pressure, comprising: a plurality of pressure sensors configured to measure cylinder pressures of an internal combustion engine during combustion events and generate analog cylinder pressure data concerning combustion events; at least one analog-to-digital converter operably connected to the pressure sensors to convert analog cylinder pressure data from the pressure sensors into digital cylinder pressure data; a plurality of memory buffers, wherein each memory buffer is configured to receive digital cylinder pressure data from the analog-to-digital converter, wherein each memory buffer has sufficient capacity to store digital cylinder pressure data for multiple combustion events of an internal combustion engine; the control system utilizing the digital cylinder pressure data from the memory buffers to calculate combustion parameters, wherein the digital cylinder pressure data utilized during portions of the engine cycle that are in the vicinity of a combustion event have a first angular resolution, and wherein the digital cylinder pressure data utilized during other portions of the engine cycle has a second angular resolution that is lower than the first angular resolution, the control system providing control of an internal combustion engine based, at least in part, on the calculated combustion parameters.