Investigation of the effective performance of diesel engines running on methanol and rapeseed oil methyl ether

Abstract

Currently, diesels are widely used as a power plant for the global automotive and tractor fleet. Undoubtedly, this cannot but affect the depletion of the world’s fossil fuel reserves and the rise in prices for oil and petroleum products. On the other hand, due to the constant increase in the number of power plants and the deteriorating environmental situation, it is no less important to maintain the required level of purity of diesel (D) exhaust gases (EG). This raises the question of finding new alternative energy sources and using them in existing engines. An important task in this case is to maintain the power and economic indicators at the level corresponding to the serial engine. The paper presents the results of studies of the working process of D using methanol (M) and rapeseed oil methyl ether (ROME). The minimum ignition portion of rapeseed oil methyl ether is set, which ensures stable operation of the D both at low loads and at idle, and over the entire load characteristic. The required composition of biofuels for the D under study is determined and recommended as optimal. The effective parameters of the D under load conditions when operating on M and ROME are studied in detail. At the same time, experimental characteristics of the effective indicators of a D running on these alternative fuels are established.

Physical and chemical processes of fuel change during ignition in diesel engine

“…It can be assumed that a decrease in the concentration of the latter in the cracking process, starting from a certain value, ceases to provide stable self-ignition at temperatures and pressures at the end of the compression stroke. At the same time, the omission of flashes in DE with an increase is a consequence of chemical transformations in the fuel during the pre-flame period, leading to a decrease in the concentration of peroxides and peroxides of the initial hydrocarbon molecules [34][35][36][37][38].…”

Morphological properties and atomic crystal lattice of solid carbonaceous objects

“…It should be borne in mind that there are several ways for the creation of DPM in the piston space. Significant of them are creation during chemistry under favorable relevant for this process, some are arises "right" from unburned fragments of DF and oil, the so-called "carbonization" process [28][29][30][31][32][33]. Based on high precision instruments, carbonaceous spherical objects that arose during destruction became visible, which made it possible to differentiate them according to the most probable values.…”

Supplying of Marine Diesel Engine Ecological Parameters

“…The decreased NO X concentration into exhaust gas is achieved by means of: -by infl uence to the operation process into engine cylinder [18][19][20]; -construction and operation parameters changes of high pressure fuel equipment [21][22][23]; -infusion of reagents into exhaust gas during their passing through special reactors [24][25][26];…”