We present an industrial case study in automotive control of significant complexity: the new common rail fuel injection system for Diesel engines, currently under production by Magneti Marelli Powertrain.In this system, an inlet metering valve, introduced before the High Pressure (HP) pump, regulates the fuel flow that supplies the common rail according to the engine operating point (e.g. engine speed, desired torque). The standard approach followed in automotive control is to use a mean--value model for the plant and to develop a controller based on this model.I n this particular case, this approach does not provide a satisfactory solution as the discrete--continuous interactions in the fuel injection system, due to the slow time--varying frequency of the HP pump cycles and the fast sampling frequency of sensing and actuation, play a fundamental role.W e present a design approach based on a hybrid model of the Magneti Marelli Powertrain common--rail fuel--injection system for four-cylinder multi--jet engines and a hybrid approach to the design of a rail pressure controller.T he hybrid controller is compared with a classical mean--value based approach to automotive control design whereby the quality of the hybrid solution is demonstrated.

Hybrid Modeling and Control of the Common Rail Injection System

BALLUCHI, ANDREA;BICCHI, ANTONIO;
2007

Abstract

We present an industrial case study in automotive control of significant complexity: the new common rail fuel injection system for Diesel engines, currently under production by Magneti Marelli Powertrain.In this system, an inlet metering valve, introduced before the High Pressure (HP) pump, regulates the fuel flow that supplies the common rail according to the engine operating point (e.g. engine speed, desired torque). The standard approach followed in automotive control is to use a mean--value model for the plant and to develop a controller based on this model.I n this particular case, this approach does not provide a satisfactory solution as the discrete--continuous interactions in the fuel injection system, due to the slow time--varying frequency of the HP pump cycles and the fast sampling frequency of sensing and actuation, play a fundamental role.W e present a design approach based on a hybrid model of the Magneti Marelli Powertrain common--rail fuel--injection system for four-cylinder multi--jet engines and a hybrid approach to the design of a rail pressure controller.T he hybrid controller is compared with a classical mean--value based approach to automotive control design whereby the quality of the hybrid solution is demonstrated.
Balluchi, Andrea; Bicchi, Antonio; E., Mazzi; A., SANGIOVANNI VINCENTELLI; G., Serra
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/115611
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 26
  • ???jsp.display-item.citation.isi??? 15
social impact