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Study of dual-fuel (diesel + natural gas) particle matter and CO2 emissions of a heavy-duty diesel engine during transient operation

Barroso P., Ribas X., Pita M., Dominguez J., De Seia E., García J.-M.

Combustion Engines

2013

R. 52, nr 2

3--11

The aim of this study is to describe the impact on particle matter and CO2 emissions of converting an existing heavy-duty diesel engine for on-highway truck applications to a dual-fuel engine (diesel + natural gas), especially in transient operation. A dual-fuel engine with homogeneous gas charge injection in the intake line before turbocharger was considered. The results showed the feasibility of this kind of technology for transient operation reaching a significant reduction of particle matter plus a decrement in CO2 emissions at the expense of a small decrement of brake fuel conversion efficiency and an increment of unburned hydrocarbons in the exhaust gases.