In the framework of a mean value dynamic model for the prediction of fuel consumption and emissions during driving cycles, the air flow and the two phase fuel flow sub-models are presented. To validate these sub-models, an experimental investigation on an electronically controlled multi-point injection engine has been carried out. A satisfactory agreement between predicted and measured data is obtained consistently with the objectives of the whole engine dynamic model. Furthermore, the identification study for the fuel flow dynamics, conducted via a least square technique, provides the basic information in describing the fuel behaviour for a port injection engine. Particularly no dependence from engine parameters has been noticed except for the amount of fuel flowing through the intake valve as liquid phase.
Experimental and computational analysis of a dynamic model for control strategy optimization in a spark ignition engine
PIANESE, Cesare;RIZZO, Gianfranco
1994-01-01
Abstract
In the framework of a mean value dynamic model for the prediction of fuel consumption and emissions during driving cycles, the air flow and the two phase fuel flow sub-models are presented. To validate these sub-models, an experimental investigation on an electronically controlled multi-point injection engine has been carried out. A satisfactory agreement between predicted and measured data is obtained consistently with the objectives of the whole engine dynamic model. Furthermore, the identification study for the fuel flow dynamics, conducted via a least square technique, provides the basic information in describing the fuel behaviour for a port injection engine. Particularly no dependence from engine parameters has been noticed except for the amount of fuel flowing through the intake valve as liquid phase.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
