A further advantage of the preferred injectors described and illustrated is the lowered average combustion overall pressure which results from the new combustion mode. This in turn can lead to the use of lighter components. The "new combustion mode" results from the different phases of the combustion of the fuel. If a pressure versus time graph for a conventional engine were shown, the graph rises sharply to a peak and drops rapidly. With the injectors of the preferred embodiment, the control of the injected droplet sizes and the injection pressures enables control of the combustion process so that the pressure time graph can have a relatively flat plateau so that the area under the graph which relates to the work can be the same as conventional engines but the lower maximum pressure leads to less stress in the motor and the ability to use smaller or lighter components.

Because the injectors described and illustrated requires low levels of lubrication due to the absence of bearing components, the injectors will function with a no wax diesel fuel making it possible to work in cold climates. With careful material selection, LPG can be directly used.