Method for replacing diesel oil with ammonium nitrate emulsified oil as diesel engine fuel

Abstract

Ammonium nitrate, mixed oil, water and emulsifier and emulsified oil emulsified into oil-in-water structure by ammonium nitrate, liquid fuel oil, water and emulsifier can replace light diesel oil and heavy diesel oil as diesel engine fuel respectively. It is characterized by low calorific value and high viscosity. Before use, the fuel injection advance angle of the diesel engine must be advanced by two teeth (≥15°); the cooling water is reduced by about 20%, and the air intake volume is reduced by about 40%. The principle is that the deflagration point of ammonium nitrate is about 50°C lower than the self-ignition point of diesel oil, and when the piston passes the top dead center, the ammonium nitrate explodes and triggers fuel deflagration (the crank angle is about 10° earlier than the ignition time of diesel oil, and the deflagration speed is 70‑90 times faster than that of diesel oil) ). Push the piston to do work in the constant volume expansion stage. Achieve the same effect as diesel. It saves fuel by 30%, reduces exhaust pollution by more than 90%, prolongs the service life of the oil supply system, reduces costs, can be used as fuel for diesel engines, and may also be used for ramjet engines.

Description

Technical field: [0001] The invention relates to energy and environmental engineering Background technique: [0002] Diesel is the liquid fuel with the highest energy density. It has high distillation range, high viscosity, and difficult atomization. After being atomized by the diesel injector, the particle size of diesel oil is 30-50 μm. The particle size is large and uneven, and the evaporation, diffusion, and oxidation speed are slow. . On the other hand, the fuel injection time of the diesel engine is short, and the fuel is not evenly mixed with the air. Although the excess air coefficient is above 1.3, the oxygen supply in some parts of the combustion chamber is still insufficient. When the oil is injected later, the environment of the combustion chamber is even worse, and the combustion is even delayed until the exhaust stage. Particles and hydrocarbons are inevitably produced in the exhaust, which wastes fuel and pollutes the environment. Motor vehicle exhaust pollut...

AI Technical Summary

Problems solved by technology

The marine heavy-duty diesel engine powered by heavy diesel oil has huge power, and the exhaust pollution of a single unit is equivalent to that of more than 10,000 diesel vehicles, causing serious air pollution to port cities

Since the implementation of the national three standards for motor vehicle fuel, the exhaust pollution of diesel vehicles has been reduced, but there has been no revolutionary change so far. Reducing exhaust pollution from diesel engines is still an urgent problem to be solved

[0004] Diesel engines are more efficient than gasoline engines, and their fuel consumption is lower than gasoline engines, but only about one-third of the fuel burned is converted into useful work, about one-third is taken away by the exhaust, and about one-third is taken away by the water-cooled heat dissipation system , the effect of using it is actually unsatisfactory

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