Experimental study of NO_x and CO₂ emissions at load regimes for a passenger car powered by direct injection diesel engine

Abstract

The paper presents a study of NOx and CO2 emissions for a standard diesel direct injection engine, which equips the Renault-Dacia Solenza 1.9D-SDI cars. The different pollutions levels are analysed between idling regimes and medium and high loads at different speeds and transmission gearboxes. To simulate the load regimes, chassis dynamometer V-Tech Dyno VT-2/B1 was used. The exhaust gases were taken to various operating modes on the chassis dynamometer, specific regimes in urban and extra-urban mode. In the paper, some recommendations are made on operating regimes that would ensure the functioning of the car at a lower polluting level.

Experimental studies on the influence of diesel quality and additive for fuel on the smoke emission of diesel cars

“…For the compression ignition engine, according to the current anti-pollution legislation, it is important to measure the degree of smoke, the concentrations of nitrogen oxides, hydrocarbons and carbon dioxide emissions [3, 4, 6, and 7]. The composition of the exhaust gases depends on: engine speed and load, air/fuel ratio, engine wear, fuel system adjustment/ deregulation, turbocharger technical condition and, of course, the anti-pollution norm of the system implemented on the car [6][7][8]. All vehicles equipped with a diesel engine have been required to significantly reduce their nitrogen oxide emissions with the entry into force of the Euro 6 anti-pollution standard.…”