| US20060037591A1 | 2006-02-23 | |||
| US20030015185A1 | 2003-01-23 | |||
| DE2734677A1 | 1979-02-08 | |||
| US3696795A | 1972-10-10 |
| Patent claims 1. The method of feeding combustion engines using atmospheric air and fuel characterized in that pure oxygen is added to atmospheric air fed to the combustion chamber, and then thus obtained air and oxygen mixture is fed to the combustion chamber to which fuel is injected. 2. The method according to claim 1, characterized in that always the same amount of oxygen is fed regardless of the engine power demand or it is added in proportion to the increase in power demand. 3. The method according to claim 1, characterized in that the oxygen is fed to the inlet channel at a pressure higher than the pressure at the outlet of the compressor, the minimum pressure being 0.3 MPa. 4. Feeding system of internal combustion engines with an air intake channel characterized in that in the air intake channel to the internal combustion engine (4), a mixer (5) of oxygen and atmospheric air is placed ahead of the intake manifold, and in the mixer (5) next to the atmospheric air inlet there is an inlet of the oxygen supply line from the oxygen tank (3), and the mixer outlet (5) is routed to the engine combustion chamber (4). 5. System according to claim 4 characterized in that the oxygen inlet to the inlet channel is located downstream cooler (2) of the atmospheric air. 6. System according to claim 4 characterized in that a three-way adjustable valve is used as a mixer (5). |
The subject of this invention is the method and feeding system for car and stationary internal combustion engines.
In internal combustion engines fuel and air mixture is used for , combustion. The preparation of the mixture takes place by feeding an appropriate amount of gasoline or another fuel to the air stream sucked in by the engine. In currently used fuel injection systems the mixture can be generated in the intake manifold or directly inside the cylinder where a precisely metered fuel dose is injected to the air stream sucked in from the atmosphere. In result of the mixture combustion reaction in the engine cylinder exhaust gases are generated in which toxic nitrogen oxides, carbon monoxide and hydrocarbons make the significant part. These are products of unfinished combustion process in the engine compartment with a limited amount of atmospheric air.
The method of feeding the combustion engines according to the invention consists in the fact that to the atmospheric air fed to the combustion chamber of the combustion engine pure oxygen is added and then thus obtained air and oxygen mixture is fed into the combustion chamber of the internal combustion engine to which the fuel is injected. The same amount of oxygen is always fed regardless of the demand for engine power or it is added in proportion to the increase in power demand. Oxygen is fed to the inlet channel at a pressure higher than the pressure at the outlet of the compressor, this pressure amounts at least 0.3 MPa.
The feeding system according to the invention is characterized in that in the air inlet channel to the combustion engine ahead of the suction manifold there is placed an inlet of the oxygen supply line from the oxygen tank, and an oxygen and atmospheric air mixer, to which air and oxygen are fed, is placed in the inlet channel. Preferably, the oxygen inlet to the inlet channel is located downstream of the atmospheric air cooler. A three-way adjustable valve is used as a mixer.
As can be seen, in the inlet channel to the engine the air and oxygen mixture is generated in which the amount of oxygen is increased in relation to its amount in the atmospheric air. Depending on the needs along with the increase of the engine speed the amount of added oxygen is a constant value or it is increased as the engine speed increases i.e. with the increase in power demand - the result is always a reduction of unwanted nitrogen compounds. The feeding system according to the invention is shown in the drawing in which it is represented schematically in the exemplary execution.
As shown, the air for preparing the fuel and air mixture is taken by the compressor 1 from the atmosphere (through a filter not shown in the diagram) from where it is fed to air cooler 2 and from there via mixer 5 is fed to the suction manifold of engine 4. Oxygen is fed to the mixer 5 from tank 3. The simplest mixer 5 is an adjustable three-way valve in which oxygen is added to atmospheric air and an oxygen and air mixture is obtained at the outlet. The resulting oxygen and air mixture is fed to the intake manifold of the engine 4 and from there into the engine combustion chamber where the fuel is injected. Oxygen is fed to the inlet channel at a pressure higher than the pressure at the outlet of the compressor 1, this pressure is at least 0.3 MPa.
Since there is no one chemical formula for gasoline, the combustion example is described with reference to butane.
The reaction of butane total combustion in oxygen is as follows:
2C 4 H l0 + l30 2 ® 8C0 2 + 10H 2 O
When combusting butane in a mixture with 50% 0 2 and 50% N 2 :
C 4 H l0 + 10O 2 + 3N 2 4C0 2 + 5H 2 0 + 2N 2 0 3 + N 2 0
Percentage calculation defining the maximum amount of generated exhaust gases based on molar weight:
C 4 H l0 (58,l2g)+ l0O 2 (3l9,988g) + 3N 2 (84,04035g) 4C0 2 (l76,2432g) + 5H 2 0
(90,0764g) + 2N 2 0 3 (152,02336) + N 2 0(44, 00794)
Thus, with three moles of N 2 , 3.5 moles of 0 2 react to form 2 moles of N 2 0 3 and one mole of N 2 0.
As can be seen, with such course of reaction the purpose of the invention was achieved and the nitrogen oxides in the exhaust gases were reduced by 28% compared to combustion in normal atmospheric air.