Open AccessThe influence of combined VVTsystems on polluting emissions and dynamic performance in SIE
Author(s) -
Daniel LITA,
Florian IVAN
Publication year - 2020
Publication title -
buletin ştiinţific - universitatea din piteşti. seria autovehicule rutiere
Language(s) - English
Resource type - Journals
eISSN - 2601-0380
pISSN - 1453-1100
DOI - 10.26825/bup.ar.2020.013
Subject(s) - nox , automotive engineering , range (aeronautics) , torque , environmental science , power (physics) , computer science , engineering , chemistry , aerospace engineering , thermodynamics , physics , organic chemistry , combustion
One of the modern methods of reducing pollutantemissions and increasing dynamic performance is the implementation of distribution phase variation systems for both the intake valve and the exhaust valve, called combined VVT, applied over a wide range of engine operation regimes. The paper aims to highlight how such a solution leads to improved dynamic performance and reduced chemical pollution. Achieving this goal involved experimental investigations into a small class cars SIE. The variants of combined VVT (intake & exhaust), research methodology and an analysis of experimental results on a wide range of functional regimes are presented. It is concluded that such a solution can lead by implementation on engines to remarkable results both in terms of NOx reduction and in terms of dynamic performance (torque and power).