Patent ID: 7774127
Filing Date: 2010-08-10
Classification: F02D,G05B

Abstract:
1. A method of controlling a vehicle engine, in which an air filling volumetric efficiency is determined for the engine, comprising: determining a base value of the volumetric efficiency from a reference mapping; determining a correction value of the volumetric efficiency by an artificial neural net, the artificial neural net including, as input parameters, engine revs, pressure in an intake manifold of the engine, a difference between a timing setpoint for an intake camshaft and a measurement of a position of the intake camshaft, and a difference between a timing setpoint for an exhaust camshaft and a measurement of a position of the exhaust camshaft; adding the base value and the correction value together to determine a corrected value of the volumetric efficiency; and injecting an amount of fuel to the engine based on the corrected value of the volumetric efficiency.