Abstract:

An experimental investigation is conducted to evaluate the effects of using GTL fuel on the particle size distribution of a fully instrumented, turbocharged and intercooled, common-rail direct injection (CRDI) engine. The tests are conducted using diesel , GTL fuel and their blends, with the engine working over three transient cycles. The results show that the total particulate emission and their growth with the elapsed time reduce as the transient rate reduced during the three transient cycles. The total particles, nuclei mode particles and ultrafine particles have all reduced as the increase of GTL fuel to the blends, but it increases a small margin for the accumulation mode particles. The nuclei modes particles for G20 and G30 fuel decreased 42% and 20%, respectively, compared to the diesel fuel. The percentage of nuclei modes particles and ultrafine particles for G20 and G30 fuel have a conspicuous decrease, and it increase a small margin for the G10 fuel during all the transient cycles.

Key words: power machinery and engineering, common-rail diesel engine, GTL, transient cycles, particle size distribution