Instantaneous internal combustion engine`s e.g. diesel engine, angle information precision improving method, involves determining injection or spark advance difference between studied and tuning engines using reference curve

摘要

#CMT# #/CMT# The method involves storing a reference curve representing speed values of a tuning engine for different injection or spark advance values. Instantaneous speed values of a studied engine are measured for different advance values. An injection or spark advance difference between the studied and tuning engines is determined, for speed values of the tuning engine corresponding to the instantaneous values, by utilizing the stored curve to reduce error on crankshaft position information. The instantaneous speed value is readjusted by correcting the error. #CMT# : #/CMT# An independent claim is also included for an onboard device utilizing the result obtained by implementing the instantaneous internal combustion engine angle information precision improving method. #CMT#USE : #/CMT# Used in an injection or spark control circuit for improving the precision of instantaneous internal combustion engine`s e.g. diesel or petrol engine, angle information (claimed) in order to reduce the emission of pollutants. #CMT#ADVANTAGE : #/CMT# The method permits to improve the internal combustion engine`s angle information precision without utilizing complex mathematic equations as well as large number of components for measuring the pressure and crankshaft position, comparing obtained values and defining better angle. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a flowchart representing steps of an instantaneous internal combustion engine angle information precision improving method.