An innovative system for piston engine combustion with laser-induced ignition of the hydrocarbon fuel consisting carbon nanotubes

Abstract

The article proposes the concept of a new piston engine combustion system that is designed to meet future-oriented ecological requirements. The concept is to use ethanol as a fuel, in which a slurry of carbon nanotubes would be formed, which are characterized by the ability to ignite using a pulse of laser light fed into the combustion chamber. Modifying the shape of the light beam that penetrates the combustion chamber would allow to control the position and the size of the area in which the ignition of fuel would occur. The originality of the concept is to combine the latest achievements in the field of nanotechnology in the construction of lasers and the production of biofuels, so as to contribute to improving the environmental performance of engines using the existing synergies.The article discusses the prospects for the use of bioethanol as a fuel with zero carbon balance, a critical review of related research on light pulse initiated ignition of hydrocarbon fuels from carbon nanotubes was presented, and a review of studies of laser ignition for conventional fuels. The results of studies of carbon nanotubes suspensions in a variety of fuels conducted by the authors in order to seek solutions for the stable dispersions formation, that are resistant to nanotube agglomeration and sedimentation. The summary indicates directions for further research highlighting the importance of environmental impact.

The impact of injector placement on the dose preparation conditions in a gasoline direct injection system

“…where Re is the Reynolds number. For the Re > 1000 the C d has the constant value of 0.44 [6]. Fuel injection is based on the atomization of droplets taking into account the KH-RT model.…”

“…The following coefficient values were adopted in this model: C 1 = 0.61; C 2 = 12; C 3 = 10; C 4 = 5.33; C 5 = 1; C 6 = = 0.3; C 7 = 0.05; C 8 = 0.188 [6]. C 1 is a KH-WAVE model constant to adjust stable droplet radius according to the formula:…”

“…Internal combustion engines with SI remain the main drives in passenger cars, and their position on the market will strengthen [6]. This trend is influenced by, among others, the current aim to reduce the share of CI engines in passenger cars, due to their negative environmental impact [8], and hybridization of car drives, by combining internal combustion engines with electric motors [7,10].…”