It is used for IC engines, especially for heavy-duty CI engines.
#Experimental ic engines code#
The fuel properties allow JP-8 to be used as a unified NATO fuel (NATO code F-34). Jet Propellant-8 (JP-8) is a military kerosene-type aviation turbine fuel. The fuels chosen for the experiment are popular, so they could be available under emergency conditions for which future engine use is planned. The experiment combines these parameters to obtain the highest possible and comparable engine performance for fueling with different fuels. The compression ratio of CI engine is one of the key parameters which, combined with the boost pressure and the injection method, especially injection strategy, determines the conditions in which the fuel is burnt. The SI engine runs efficiently with a low compression ratio, so the paper does not present results on that. Practical implementation of this idea requires that highly reactive fuels, such as JP-8 and its blends with pure rapeseed oil, can be burned efficiently at a low compression ratio (CR = 12). The proposed engine would utilize compression ignition mode for combustion of diesel oil (DO) or JP-8 and its blends with easily accessible, high reactive fuels or spark ignition mode for gasoline or other low reactive fuels.
Future construction is planned as a flexible solution for military or special purpose transport means and emergency power generation. The paper presents some results of the research aimed at recognizing the possibility of construction of multi-fuel heavy duty engine.
The proposed injection strategy applied for CI engine with the low compression ratio enabled efficient combustion and comparable, relatively high engine performance for all tested fuels. The elaborated, unified injection strategy that synchronized the main dose injection timing with the start of the second stage of homogeneous mixture combustion was checked in practice. The experiment was carried out on naturally aspirated and supercharged AVL research engine with a common rail system and compression ratio CR = 12.
For the test diesel oil, JP-8 and its blends with pure rapeseed oil were chosen as easily accessible fuels. Practical implementation of the idea requires that highly reactive fuels be burned efficiently at a low compression ratio suitable for both engine modes. The proposed engine would utilize compression ignition mode for combustion of high reactive fuels (JP-8, diesel oil, etc.) or spark ignition mode for gasoline or other low reactive fuels. The paper presents some research results to recognize the possibility of realization of the idea of a multi-fuel IC engine.