Real time adaptive engine position estimation

An adaptive engine system comprising at least one pressure sensor which is positioned within a cylinder of a combustion engine;

• a crankshaft position sensor;
• an engine control processor, said engine control processor capable of receiving data from said at least one pressure sensor and information from said crankshaft position sensor;
• and
• a memory device;
• wherein said engine control sensor utilizes said data from two consecutive readings to determine an apparent polytropic index, said apparent polytropic index utilized to correct said information from said crankshaft position sensor periodically throughout the life of said engine.

A method of adapting and engine system periodically throughout the life of the engine comprising:

• determining if operating conditions permit data capture, wherein said operating conditions permit data capture only during non-combustion events;
• capturing cylinder pressure data;
• processing said cylinder pressure data to calculate a CPS offset value by calculating an apparent polytropic index;
• and
• updating the CPS offset value within an engine control system.