ES2360993A1 - Water injection system in internal combustión engine and injection procedure. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Water injection system in internal combustión engine and injection procedure. System comprising a water reservoir (1), means for driving the water, dissociation means or dissociator (2) of water and injection means in the intake manifold of the engine (1) or another point of the circuit entry of air, causing the dissociation of water into hydrogen and oxygen. The dissociator (2) is constituted by at least one narrow passage (2) of water passage, said conduit (21) having at least one strand (22) of nicrºm along its length, these strands (22) of nicrºm being connected with an electric source for the generation of an inductive current. The water injection process comprises the dissociation of the water before injection into the intake air of the engine (1), the dissociated water being supplied synchronized with the speed of rotation of the engine (1). (Machine-translation by Google Translate, not legally binding)

Description

Engine water injection system internal combustion and injection procedure.

Object of the invention

The present invention relates to a system of water injection in internal combustion engine in order to Optimize its operation.

Background of the invention

Various injection systems of water in the intake of an internal combustion engine, for example a diesel cycle or otto cycle engine preferably, which they consist of injecting a certain amount of water into the air of admission to said engine.

For example PCT application WO2007 / 068260 of Mr. Christian Javier García Rojas, describes a system that through a pump injects a small amount of distilled water into the air of admission by one or more sprayers arranged in the intake manifold.

Also, the Spanish invention patent ES530493 from Forschungsgesellschaft Fur Energietechnik und Verbrennungsmotoren MBH. describes a procedure and device of water and alcohol injection into the intake air of an engine internal combustion with the intention of increasing the amount of molecules with OH (hydroxide) bonds that improve combustion later.

All these systems basically comprise a water tank, means of water supply and means of injection into the engine intake manifold, and rely on that water from a certain temperature dissociates in its basic components, which are oxygen and hydrogen. Hydrogen separated in the combustion chamber has a great interaction with the mixture of air and fuel, helping the explosion or Swelling occurs more correctly. In turn, the oxygen supply Extra that is produced allows the combustion atmosphere to be optimal for a complete combustion of the fuel, so that prevents the escape of hydrocarbons without burning in the gases of escape.

However, these systems present a problem. considerable, which is that water is introduced into the engine by direct spraying into the intake manifold, with which is not in an optimal state for proper combustion once mixed with air and fuel.

This situation leads to the addition of water not be so effective, and there are even problems of water accumulation unused liquid in different parts of the engine because of its incorrect spray and dissolution in the air flow.

Description of the invention

The engine water injection system internal combustion and injection procedure, object of this invention, presents some technical peculiarities destined to improve combustion in the engine, obtaining a lower consumption, a greater power and a reduction of pollutant gases emitted as a result of more complete assisted combustion.

For this, the system comprises means of dissociation or dissociator of water before its introduction into the engine by means of injection. This water dissociated in oxygen and hydrogen that make it up allows combustion to be more spontaneous and complete. On the one hand hydrogen provides more energy to the engine in its combustion and the extraordinary supply of oxygen to the natural oxygen from the air allows the burning of fuels be complete, thus avoiding the emission of hydrocarbons without burning and reducing the amount of carbon dioxide emitted by the engine to the atmosphere.

This operation represents an improvement notable compared to other water injection systems, in which the water is added directly and decomposes inside the engine when reaching the high temperatures that occur in the chamber during fuel burning, which consumes energy and its effect is delayed inconveniently.

In a main embodiment, the dissociator is constituted by a narrow passage of water, presenting said conduit at least one nichrome wire (iron alloy, nickel and chrome) arranged along its length, this nicróm thread being connected to an electrical source for the generation of a inductive current, such as a car's own battery. These threads cause the dissociation of water into its basic components thanks to the inductive current applied.

Thus, in a first embodiment the conduit of water passage in the dissociator is spirally configured in the inside of an external reinforcement housing.

In other embodiments the duct can be place longitudinally single or multiple stacked in a housing Prismatic or other conformations.

Water supply means from the tank comprise a drive pump associated with said tank of water, for example submerged and a pressure regulator supplied by said pump, to avoid overpressures in the system and allow a constant and regulated pressure of supply.

For the correct dosage of dissociated water it is envisioned that the drive means comprise a micropump of impulses of water supply to the dissociator, being this impulse micropump connected to a control unit for the regulation of the water supply impulses to dissociate synchronized with the engine speed. So, the dissociated water dosage in the intake air flow corresponds advantageously with the opening of the valves that determine the intake of incoming air, for example.

This control unit can also have various functions such as starting the operation of the system only from a minimum engine speed, a safe Start-up without water, or system diagnosis, in addition to the said dosage of dissociated water.

The injection means comprise a valve return of unused dissociated water and a water diffuser dissociated in the engine. Thus, the system itself is allowed to have internal draining means when the engine stops or does not need water injection and correct means of water injection by diffusion in the air flow.

The diffuser is connected directly to the engine intake manifold, which does not require noticeable changes in the mechanics of the vehicle or its aesthetic appearance.

With this system, the injection procedure of water in internal combustion engine, includes the dissociation of the water before injection into the engine intake air, with what no combustion power is subtracted and improved by contribution of oxygen and hydrogen.

In addition the procedure foresees that the water dissociated is supplied synchronously with the speed of motor rotation to make a correct dosage according to the consumption needs and times when the air flow fill combustion chambers to avoid condensation unnecessary water in the intake manifold.

Description of the figures

To complement the description that is being performing and in order to facilitate the understanding of characteristics of the invention, is attached herein descriptive a set of drawings in which, for illustrative purposes and not limiting, the following has been represented:

- Figure 1 shows a diagram of the system.

- Figure 2 shows a schematic view of the spirally configured dissociator.

- Figure 3 shows a schematic view of the dissociator configured by a longitudinal conduit.

- Figure 4 shows a cross section of a conduit of the dissociator.

Preferred Embodiment of the Invention

As can be seen in the figures referenced, the system comprises a water tank (1) with about drive means, a dissociator (2) and injection means of dissociated water in the intake air flow of an engine (3) Internal combustion

The drive means comprise a pump (41) immersion drive in the water tank (1) and a pressure regulator (42) supplied by said pump. TO continuation of the regulator is a micropump (43) of impulses, which is associated with a control unit (5) electronics that monitor the operation of the engine (3) and mainly its turning speed and combustion points in the chambers for dosing the water supplied by the micropump (43) to the engine (3).

At the output of the impulse micropump (43) find the dissociator (2) of the water that separates the oxygen and hydrogen it contains. The dissociator (2) is constituted by a duct (21) at least 10 centimeters long and about 4 millimeters in diameter approximately, formed into a material insulator, through which the water to dissociate circulates. Within said conduit (21) there are two threads (22) of alloy parallel nicróm, thus represented in figure 4, each thread being (22) flat configuration, 1.5 millimeters wide and 0.6 millimeters thick approximately. These threads (22) are connected to a power supply (no represented), for the generation of an induction current. This power supply can be the battery of the vehicle in the case of the engine (1) of a car.

This duct (22) is spirally arranged inside an external reinforcement housing (23a), for example configured in polyester, thus represented in figure 2.

In an alternative embodiment, represented in figure 3, the splitter (2) presents the conduit (21) arranged longitudinally within a housing (23b) of reinforcement.

The injection means comprise a valve return (6), connected to the dissociator output (2) and which is associated with a diffuser (62) of the water in the air flow, presenting said return valve (61) a secondary outlet (63) for its connection to the water tank (1) and return the water no incorporated into the intake air flow.

In this case, the diffuser (63) is connected to the intake manifold (not shown) of the engine (1).

Once nature is sufficiently described of the invention, as well as a preferred embodiment, for the appropriate purposes that the materials, form, size and arrangement of the elements described may be modified, as long as this does not imply an alteration of the essential features of the invention claimed in continuation.

Claims (9)

1. Water injection system in an internal combustion engine, of the type comprising a water tank (1), water supply means and injection means in the engine intake manifold (1) or other point of the air inlet circuit, characterized in that it comprises dissociation means or dissociator (2) of the water before its introduction into the engine (1) by the injection means to cause the dissociation of the water in hydrogen and oxygen. 2. System, according to claim 1, characterized in that the dissociator (2) is constituted by at least one narrow passage (21) of water passage, said conduit (21) having at least one nichrome wire (22) along its length , these nichrome wires (22) being connected to an electrical source for the generation of an inductive current. 3. System according to claim 2, characterized in that the conduit (21) is spirally formed inside an external reinforcement housing (23a). System according to claim 1, characterized in that the delivery means comprise a supply pump (41) associated with the water tank (1) and a pressure regulator (42) supplied by said pump (41). 5. System according to claim 1, characterized in that the delivery means comprise a micropump (43) of water supply pulses to the dissociator (2), this pulse micropump (43) being connected to a control unit (5) for regulating the water supply pulses to be dissociated synchronized with the speed of rotation of the motor (1). System according to claim 1, characterized in that the injection means comprise a return valve (61) of the unused dissociated water and a diffuser (62) of the dissociated water in the engine. System according to claim 6, characterized in that the diffuser (63) is connected directly to the intake manifold of the engine (1). 8. Water injection procedure in an internal combustion engine, characterized in that it comprises the dissociation of water before injection into the intake air of the engine (1). Method according to claim 8, characterized in that the dissociated water is supplied synchronously with the speed of rotation of the motor (1).