MXPA96002022A - Improvements in precalibrated plugs for explosion engines - Google Patents

Abstract

An improved spark plug for combustion engines with a conical tip of the outer sleeve or negative electrode that protects the inside of the spark plug and the positive electrode from dirt accumulation is described, preventing it from being reduced or excessively increasing the thermal range of the spark plug and the spark plug. conduction of the positive electrode. The tip of the negative electrode is provided with a multiplicity of cross cuts that in turn provide a multiplicity of integrated radial and axially arranged negative electrodes that greatly increase the efficiency of the engine ignition process. Spark plug calibration is given by the difference between the length of such cuts and the thickness of the nichrome tip of the positive electrode in the manufacturing process of each type of spark plug according to the needs

Description

IMPROVED SPARK PLUG IMPROVEMENTS FOR EXPLOSION ENGINES.

TECHNICAL FIELD OF THE INVENTION The present invention relates to spark plugs of internal combustion engines and more particularly to an improvement-in spark plugs for internal combustion engines.

BACKGROUND OF THE INVENTION In the alternative thermal engines that run on gasoline, the spark plug is an organ designed to produce, inside the cylinder chamber, the spark that ignites the air and gasoline mixture fed to it. The spark plug has as essential components two electrodes, one of which is connected to the mass of the engine, and the other, which is isolated by a porcelain body, is placed, by various means, at a very high voltage to In order to provoke the desire or spark coming from the distributor towards the mixture of air and food that, when ignited in this way, explodes and burns producing expanding gases that confined in the chamber of the respective cylinder, cause displacement. of the cylinder inside the chamber. One of the main problems in the spark plugs is to provide an insulator between both electrodes with good dielectric properties at the operating temperatures of the motors, a problem which is compounded by the accumulation of dirt inside the spark plug that reduces the thermal range of the spark plug and the conductivity of the positive electrode decreases, causing the low efficiency of the combustion process in the cylinder chambers in the engine. Another disadvantage of the prior art is that to calibrate the spark plugs the negative electrode is struck, generally welded to the external socket, while a metal sheet of the proper caliber is inserted between it and the positive electrode, both electrodes can be damaged as a result of this operation. For all the above, the inventor of the present application made a multiplicity of investigations, tests and experiments -which led him to provide a new improved precalibrated spark plug, -with the purpose of eliminating the drawbacks of the previous art and which is clearly of very important in the part of the engineering to which the invention belongs.

The applicant of the present invention has developed an improved self-cleaning spark plug, which does not need to be calibrated before it is installed in the engine. This precalibrated spark plug has as its main feature one or more cuts in the form of a cross at the end -of the outer socket, so that at the intersection or center of these cuts the calibration required by each spark plug between said cuts and the positive electrode is given, subtracting the thickness of the tip of the postoperative Nicro electrode. These cuts that the negative electrode presents in its almost inferior part through the perimeter of the steel shell - below the string, constitute integrated negative electrodes that also favorably duct the thermal range of the spark plug, which will be a function of the number of cuts that present, that is, less cuts the bujía is hotter, and more cuts the spark plug is colder, as certain internal combustion engines tend to heat more easily. In this spark plug the negative electrodes integrated to the external socket, are formed by a crown arranged in an axial-radial manner that is placed further inside the combustion chamber giving a higher temperature to the ignition, which is carried out more quickly and practically without contaminating waste. Nowadays, when environmental pollution has reached worrying limits in the whole world, there is an urgent need to develop new anti-pollution devices, especially in automobiles, hence the concern of the inventor of the present to carry out unique modifications in the conventional structure of the spark plugs, in order to reduce as much as possible the waste -contaminants, produced by the combustion process of the engines.

OBJECTIVES OF THE INVENTION It is a main objective of the present invention to provide a pre-calibrated spark plug in which a tip is provided that does not allow the interior to be soiled and where the thermal range of the spark plug is located and which consequently reduces such - range and protect the tip of the positive electrode at the same time.

SHORT DISCRIPTION OF THE DRAWINGS For a better understanding of the present invention, this is described based on a preferred embodiment illustrated in the single figure that accompanies this description and in which: The single figure is a vertical elevation view in section, where a spark plug is shown performed in accordance with the present invention.

DESCRIPTION OF THE INVENTION With reference to the single figure, the spark plug of the present invention is formed by an insulator or ceramic (1) which contains in its interior a positive electrode, formed by a metal pole (2) that part of the head (3) of the insulator until it is joined to a sealing (4) and transmitting (or conductive) mixture, which also joins the nichrome (5) material tip or positive electrode and whose paste to seal prevents internal compression leaks. This insulator (1), already assembled with the previous elements, is engargola to an external metal bushing (6) that is vitalized with a bath of copper and chromium to withstand high temperatures transmitting current in the combustion chambers of the different engines of gasoline, this bushing (6) has been the negative pole for being screwed in the monoblock (not shown) of the engine and at its tip it has a conical shape with two cross-shaped cuts (7) - (these cuts can be one, two or three, etc.), so that the cross or center of these cuts give the calibration required by each spark plug, reducing the thickness of the nichrome tip (8). Example: If the tip of the insulator (nichrome) measures .100"(tenths of an inch) and the spark plug requires .030" of calibration, the intermediate center from tip to tip of the socket must have .160". The metal parts resulting from the cuts (7) in this tip constitute integrated negative electrodes to the external bushing (6). Anchors (9) has a copper cap inserted into a cylindrical sleeve with a truncated diamond tip to seal it with the iron cap to avoid compression leaks, and center the nichrome tip with the cuts. It will be apparent to those skilled in the art, that innumerable modifications to the present invention can be made without

Claims (3)

It is to be seen from the spirit and the spirit of the same, so it must be considered in its broadest and non-limiting sense. NOVELTY OF THE INVENTION Having described the invention, it is considered as a novelty, and, therefore, the content of the following is claimed as property: R E I V I N D I C A C I O N S

1. Spark plug upgrades for blasting engines of the type - comprising: a pole or positive pole based on a knurled tip that presses into the center of an insulator, mixing with a copper-based cast that serves as a conductor sealing the union of the cylindrical tip or positive pole to avoid leakage inside the insulator; characterized because the negative electrode or outer shell of metal or earth has at its tip a conical shape-a multiplicity of grooves or cross-shaped cuts, so that the length of the cross or center of these cuts gives, with respect to the - Positive pin, the calibration required by each spark plug, subtracting the weight of the positive pole or nichrome tip.

2. Improvements in buses for explosion engines, in accordance with claim 1, characterized in that between the conical tip or positive pole and the outer bushing or negative pole allow the formation of the calibration required by each of the types or spark plug models.

3. Spark plug improvements for internal combustion engines, according to claim 1, characterized in that the negative bushing or pole that is connected to earth, includes a slot that engages with the insulator with the insulator and forms a second internal seal that contributes with a main seal washer that seals under pressure.