Thanks to efficient combustion enabled by DI and turbocharges, diesel engines have greater power and fuel economy then gasoline engine. However, the combustion process generates large amounts of atmospheric pollutants. Nevertheless, technological advances have significantly reduced emissions, giving rise to ‘clean diesel’. Kia’s common rail direct injection (CRDi) diesel engine features precision, high-pressure fuel injection via an electronic control system that enhances efficiency and power. Our VGT diesel engine employs CDRi as well as the variable geometry turbocharger (VGT), which optimizes combustion by raising the turbine’s power at all engine speeds through the precise control of exhaust flow. Kia vehicles powered by these diesel engines have 20-30% higher fuel economy and around 20% lower CO2 emissions than their gasoline counterparts. In 2013, we expanded our diesel lineup to compact sedans with the release of the K3(Forte/Cerato) diesel model to the European markets.
Diesel vehicles emit carbon monoxide (CO), hydrocarbon (HC), PM and NOx, 90% of which are removed by diesel oxidation catalysts (DOCs) and the diesel particulate filter (DPF). To reduce NOx emissions, which DPF is unable to filter, Kia Motors developed the Low Pressure EGR System (LP EGR) and the Lean NOx Trap (LNT) in 2012. Kia’s entire diesel lineup meets Euro 5 emission standards, and in early 2014, we will start introducing engines featuring LP-EGR and LNT technologies to meet Euro 6 standards, which is slated to go into effect this year.
This is an exact article that has been taken from Kia Motors Move magazine produced in May 2014, copyrights belong to KMCA