NO_x reduction in a directly injected natural gas engine

摘要

The high-pressure direct injection (HPDI) of natural gas (NG) permits diesel engines to retain their high fuel economy while reducing regulated emissions. In the work presented in this paper, directly njected natural gas is ignited by pilot diesel fuel, and both fuels are injected through a single injector. Steady-state and transient results in a DDC 6V-92 TA DDECII engine confirm the retention of the high efficiency of the diesel engine and demonstrate reductions in nitrogen oxide (NO_x) emissions near 50