Abstract

The adoption of diesel LTC combustion concepts is widely recognised as a practical way to reduce simultaneously nitric oxides and particulate emission levels from diesel internal combustion engines. However, several challenges have to be faced up when implementing diesel LTC concepts in real application vehicles. In particular, achieving acceptable performance concerning the drivability comfort, in terms of output torque stability and combustion noise during engine dynamic transients, is generally a critical point. One of the most promising solutions to improve the LTC combustion operation lays in the exploitation of closed loop combustion control, based on in-cylinder pressure signals. In this work, the application of an in-cylinder pressure-based closed loop combustion control to a Euro 6-compliant demonstrator vehicle has been developed. The main challenges deriving from the control of the LTC combustion, directly affecting the engine/vehicle performance, have been analysed in detail. In order to overcome these drawbacks, a new control function, integrated into the base closed loop system, has been designed. The performance of the new function have been experimentally tested at the engine test bench. Results showed a significant enhancement of the LTC operation, in terms of both combustion stability and noise reduction during engine transients. The new function was also implemented on a real vehicle, thus proving the potential of the new control concept in realistic operating conditions.

Autore Pugliese

• Laforgia Domenico , Carlucci Antonio Paolo

Tutti gli autori

• A.P. Carlucci , D. Laforgia , S. Motz , R. Saracino , S. P. Wenzel

Titolo volume/Rivista

ENERGY CONVERSION AND MANAGEMENT

Anno di pubblicazione

2014

ISSN

0196-8904

ISBN

Non Disponibile

Numero di citazioni Wos

18

Ultimo Aggiornamento Citazioni

28/04/2018

Numero di citazioni Scopus

28

Ultimo Aggiornamento Citazioni

28/04/2018

Settori ERC

Non Disponibile

Codici ASJC

Non Disponibile