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Method for estimating mass of air admitted into engine combustion chamber consists of modeling air mass as function of pressure variation in combustion chamber from polytropic gas compression law
Method for estimating mass of air admitted into engine combustion chamber consists of modeling air mass as function of pressure variation in combustion chamber from polytropic gas compression law
The method consists of modeling the admitted air mass (M) as a function of a pressure variation (DELTAP) in the combustion chamber from the polytropic gas compression law, P.Vn = c. It comprises a pressure measurement stage within the combustion chamber (2) at a first time in a combustion cycle, a second pressure measurement stage at a second time and a calculation stage of the pressure variation between the two times. The admitted air mass is then calculated according to the formula M = A.DELTAP + B where A and B are variables determined according to the engine speed. An Independent claim is included for a vehicle comprising an I.C. engine.
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