CN106797108A

CN106797108A - Improved spark plug

Info

Publication number: CN106797108A
Application number: CN201580050767.8A
Authority: CN
Inventors: M·法雷尔; R·法雷尔; H·E·鲁达
Original assignee: Nano Spark LLC
Current assignee: Nano Spark LLC
Priority date: 2014-08-15
Filing date: 2015-08-13
Publication date: 2017-05-31
Also published as: WO2016023127A1; KR20170041895A; EP3180824A4; JP2017529656A; EP3180824A1; CA2859488A1

Abstract

A kind of spark plug, including nut, the connecting portion for extending from the nut and being suitable to receiving ignition lead and the insulator extended away from the connecting portion from the nut.Positive pole extends through the insulator.Extend around the insulator from the nut with externally threaded tube, and terminated in addition to insulator end with the spaced lid of the insulator.The lid defines space, and the space has：Central part, the positive pole is extended in the central part；Around the circular passage of the central part；And multiple lobes, each lobes on the central part as in the epicyclic train planetary gear on central gear positioning position.The lid have in the axial direction with the center surface of the insulator and around and extend to the convex surface of the center surface.

Description

Improved spark plug

Technical field

The present invention relates to the internal combustion engine of spark ignition.

Background technology

In internal combustion engine, conventionally used spark plug starts burning.In traditional spark plug, restriction longitudinal axis is provided with The body of line.The body has the becket with the longitudinal axis co-axial orientation near its one end.The body also include with The metal tube of the longitudinal axis co-axial orientation, the metal tube extends from the other end of the ring body, the metal pipe Have external screw thread so as in use with the corresponding engagement threaded in engine cylinder-body.Porcelain insulator also constitutes the body A part.The insulator has the part being arranged on inside the pipe.Inside of the part in the axial direction from the pipe exceeds The ring extends and with the elongated spaces for penetrating in the axial direction.Elongated positive pole occupies the space and exceeds in the axial direction The insulator extends to the terminal (terminus) of the described one end for limiting the body.Traditional spark plug is also including electrode branch Leg.The electrode supporting leg has two arms being connected to each other in the horizontal, and one of arm is in the axial direction from the ring beyond described Electrode extends, and another arm diametrically extends inwardly to terminate at the terminal axially spaced from one arm End sections.Gap in the conventional ignition plug is the space being limited between the positive pole and the electrode supporting leg.

The content of the invention

A kind of spark plug constitutes one aspect of the present invention.The spark plug and the engine cylinder-body/gas with screwed hole Cylinder cap is used together, and is also used together with spanner for spark plug and ignition lead, and the spark plug includes nut portions, connecting portion, insulator Portion, positive pole and earth electrode.The nut portions are suitable to be rotated by spanner.The connecting portion extends and is suitable to from the nut portions Accommodate the ignition lead.The insulator portion extends to one end from the nut portions away from the connecting portion.The positive pole is worn Cross and extend beyond the end of the insulator portion.The earth electrode includes tubular metal portion and cap, the tubulose Metal portion extends to the cap.The tubular metal portion：From the nut portions in a circumferential direction around the insulator portion Extend；Terminate causing that a part for the insulator portion extends beyond the tubular metal portion；With longitudinal axis co-axial orientation simultaneously Define longitudinal axis；And with external screw thread be used in use with the engine cylinder-body in engagement threaded.It is described Cap and the insulator portion interval setting and space is limited, the space has：Central part, the positive pole is extended in this In center portion；Around the circular passage of the central part；And multiple lobes (lobe), each lobes with epicyclic train Modes of emplacement similar mode of the middle planetary gear on sun gear is positioned on the central part.The lid also has center table Face and convex surface, the center surface is in the axial direction between the part stretched out beyond the tubular metal portion of the insulator Separate, the convex surface around and extend to the center surface.

According to another aspect of the present invention, the center surface may be substantially perpendicular to the longitudinal axis orientation and base This is coplanar with the end of the positive pole.

According to another aspect of the present invention, the multiple lobes can be made up of 3-7 lobes.

According to another aspect of the present invention, if

R1 is each planetary radius；

R2 is the distance of each planetary axis and the axis of central gear；

R3 is the outer radius of earth electrode；

R4 is the outer radius of circular passage,

So

R1:R2:R3:R4:R5 can be about 0.12:0.305:0.475:0.25.

According to another aspect of the present invention, the multiple lobes can be made up of 7 lobes.

According to another aspect of the present invention, the cap can have the finger for diametrically inwardly setting, the finger Be separated from each other for the lobes by shape part, and each finger has a terminal, and described each finger extends to the terminal, when The finger is substantially equal to prolonging beyond the insulator for the positive pole in the thickness of the destination county when being measured on longitudinal direction The length of the part stretched.

The function of the related elements of other advantages of the invention, features and characteristics and operating method and the structure and portion The economy of combination and the manufacture of part can become after following detailed description and appended claim is considered referring to the drawings Must become apparent from, accompanying drawing will be hereinafter briefly described.

Brief description of the drawings

Fig. 1 is the perspective view of the spark plug of an illustrative embodiments of the invention；

Fig. 2 is the zoomed-in view of the circle zone 2 of Fig. 1；

Fig. 3 is the end-view of the structure of Fig. 1；

Fig. 4 is the side view of the structure of Fig. 1；

Fig. 5 is the view along the 5-5 of Fig. 4；And

Fig. 6 is the view similar with Fig. 5, illustrates a kind of example fabrication method；

Fig. 7 is the perspective view of the circle zone 7 of Fig. 6；

Fig. 8 is the plan view of the structure of Fig. 7；

Fig. 9 is the view along the 9-9 of Fig. 8；And

Figure 10 is the side view of the structure of Fig. 7.

Specific embodiment

First, the spark plug 20 according to illustrative embodiments for being shown in Fig. 1-4 and the engine cylinder with screwed hole Body/cylinder head is used together, and is also used together with spanner for spark plug and ignition lead, and these are all traditional parts.

Such as tradition, the spark plug 20 also includes nut portions 22, connecting portion 24, insulator portion 26, positive pole 28 and connects Ground electrode 30.

Such as tradition：The nut portions 22 are suitable to be rotated by spanner；The connecting portion 24 prolongs from the nut portions 22 Stretch and be suitable to accommodate the ignition lead；The insulator portion 26 extends to one from the nut portions 22 away from the connecting portion 24 End；The positive pole 28 is passed through and extended beyond the end of the insulator portion 26.Also such as tradition, the ground connection Electrode 30 includes tubular metal portion 32, the tubular metal portion 32：Extend around the insulator portion 26 from the nut portions 22；Eventually Only into so that a part 33 for the insulator portion 26 extends beyond the tubular metal portion 32；With longitudinal axis X-X co-axial orientation And define longitudinal axis X-X；And with external screw thread be used in use with the engine cylinder-body in engagement threaded.

However, in the spark plug, cap 34 is provided with, the tube 32 extends to the cap 34 and along the circumferential direction It is connected to the cap 34.

The cap 34：

● with the interval setting of the insulator 26 and limit space 36, the space has：Central part 38, the positive pole During 28 extend to the central part 38；Around the circular passage 40 of the central part 38；And multiple lobes 42, each lobes 42 are positioned on the central part 38 with the modes of emplacement similar mode on sun gear with planetary gear in epicyclic train.

● with the multiple fingers 44 for diametrically inwardly setting, the finger 44 divides the lobes 42 each other Open, each finger 44 has a terminal, and described each finger 44 extends to the terminal, when measurement when institute in a longitudinal direction State the length that finger is substantially equal to the part extended beyond the insulator of the positive pole in the thickness X 1 of the destination county X2。

● have：I () center surface 46, the center surface 46 is in the axial direction with the insulator 26 beyond the tubulose Part that portion 32 is stretched out is spaced apart, and the center surface 46 is basically perpendicular to the longitudinal axis X-X orientation and substantially and institute The end for stating positive pole 28 is coplanar；(ii) convex surface 48, the convex surface 48 extends around and from the tubular metal portion 32 To the center surface 46.

The geometry of the cap is caused if R1 is each planetary radius, and R2 is each planetary axle The distance of the axis of line-spacing central gear, R3 is the outer radius of earth electrode, and R4 is the outer radius of circular passage, then R1:R2: R3:R4:R5 is about 0.12:0.305:0.475:0.25.

The spark plug of the illustrative embodiments has been proved in many tests having been carried out with significant excellent Point.

Table 1

Table 1 is shown using with 9:The CRA Super Series Template 360Chev Racing of 1 compression ratio The dynamometer test that Engine is performed.Timing (timing) is set in 34.The carburetor for using is that have 77 Holly of nozzle 390.The oil for using is 15/40 viscosity.Fuel octane number：110.Load factor is set in 1.21.Left column is shown using one group Moment of torsion and HP that new standard Autolite (proud special profit) AR3932X spark plugs are produced when RPM value is between 5500 to 8000. Middle column shows the identical data group using the creative amended identical spark plug of cap.Right row are shown in all surveys Moment of torsion and horsepower gain (gain) under the speed measured.

Table 2

Table 2 is shown using with 10:The NASCAR-approved of 1 compression ratio, NCATS Series Restricted 1 1/8 " the dynamometer test that engine is performed.Timing is set in 30.The carburetor for using is with 64/64 nozzle Holly390.The oil for using is 15/40 viscosity.Fuel octane number：94.Load factor is set in 1.21.Left column shows and uses Moment of torsion and HP that one group of new standard Autolite AR473 spark plug is produced when RPM value is between 4500 to 6500.It is middle Row show the amended identical data group for identical spark plug of cap for utilizing creativeness.Right row are shown in all surveys Moment of torsion and horsepower gain under the speed measured.

Table 3

Table 3 is shown using Chevy Big Block 12:The dynamometer test performed under 1 compression ratio.Timing sets 32.The carburetor for using is that have 77 Holly 850 of nozzle.The oil for using is 15/40 viscosity.Fuel octane number： 110.Load factor is set in 0.77.Left column is shown using one group of new standard Autolite AR3932X spark plug in RPM It is worth the moment of torsion and HP produced during between 4500 to 7000.Middle column is shown using the creative amended identical fire of cap The identical data group of Hua Sai.It is right to arrange the moment of torsion and horsepower increasing obtained under all speed shown in addition to 5500-5700RPM Benefit.

Table 4

Table 4 is shown using Chevy Big Block 12:1 compression ratio, the measurement of power performed under .045 gaps (gap) Device is tested.Timing is set in 32.The carburetor for using is that have 77 Holly 850 of nozzle.The oil for using is 15/40 viscous Degree.Fuel octane number：110.Load factor is set in 0.77.Left column is shown using one group of new standard Autolite Moment of torsion and HP that AR3932X spark plugs are produced when RPM value is between 4500 to 7000.Middle column is shown using creativeness The identical data group of the amended identical spark plug of cap.Right row are shown under all speed in addition to 5500-5800RPM Obtain moment of torsion and horsepower gain.

Horsepower contrast

Table 5

Moment of torsion is contrasted

Table 6

Table 5 and 6 shows the dynamometer test of Chevy Big Block.Timing is set in 32.The carburetor for using is tool There is the Holly 850 of 77/77 nozzle.The oil for using is 15/40 viscosity.Fuel octane number：110.Load factor is set in 0.77. In table 5, three left columns are shown and produced when RPM value is between 4500 to 7000 using one group of new AR3932X spark plug Horsepower.Three right row show the identical data of the amended identical spark plug of cap using creativeness.Except 5600RPM A horsepower gain is obtained under outer all speed.In table 6, three left columns are realized using one group of new AR3932X spark The moment of torsion that plug is produced when RPM value is between 4500 to 7000.Three right row show and utilize creative cap amended For the identical data of identical spark plug.Torque gain is obtained under all speed in addition to 5600RPM.

In each example, to use the creative amended spark plug of cap as benchmark.In this respect, it will meaning Know be in each case, by grind off its electrode supporting leg and a boxing is connect on it change the benchmark being previously mentioned/ The spark plug on basis, as shown in Figure 6.

Exemplary loop is shown in Fig. 7-10.The ring is produced by 304 2B stainless steels, and its size is as follows：

It should be understood, however, that these are dimensioned to so that the distance between positive pole and described ring are by using changing The distance that the vehicular manufacturer of spark plug afterwards specifies.The modification of these sizes is feasible and can be started at other really Adopt to meet the specification of horse motivation manufacturer in machine equipment.

In addition, although disclose 7 structures of lobes, but the multiple lobes can be by 3-7 lobes structure Into.

It will thus be appreciated that claim of the present invention only appended by purposefully explaining is limited.

Claims

1. a kind of spark plug, the spark plug is used together with the engine cylinder-body/cylinder head with screwed hole, also and spark plug Spanner and ignition lead are used together, and the spark plug includes：

It is suitable to the nut portions rotated by spanner；

Extend and be suitable to receive the connecting portion of the ignition lead from the nut portions；

The insulator portion of one end is extended to away from the connecting portion from the nut portions；

Through and beyond the insulator portion the end extend positive pole；And

Earth electrode, the earth electrode includes：

Tubular metal portion, the tubular metal portion extends from the nut portions around the insulator portion, and the tubular metal portion encloses Coaxially be orientated and define the longitudinal axis around longitudinal axis, and also with external screw thread, in use with the hair Engagement threaded in motivation cylinder body；And

Cap, the tubular metal portion extends to the cap, the cap and the insulator portion interval setting,

The cap limits space, and the space has：Central part, the positive pole is extended in the central part；In described The circular passage of center portion；And multiple lobes, each lobes with planetary gear in epicyclic train on sun gear Modes of emplacement similar mode is positioned on the central part；

The cap has：Center surface, the center surface and the insulator portion stretch out beyond the tubular metal portion Part is spaced apart in the axial direction；And convex surface, the convex surface around and extend to the center surface.

2. spark plug according to claim 1, wherein the center surface is approximately perpendicular to the longitudinal axis orientation simultaneously And it is substantially coplanar with the end of the positive pole.

3. spark plug according to claim 1, wherein the multiple lobes are made up of 3-7 lobes.

4. spark plug according to claim 3, if wherein

R1 is each planetary radius；

R2 is each distance of planetary axis away from the axis of central gear；

R3 is the outer radius of earth electrode；

R4 is the outer radius of circular passage,

So

R1:R2:R3:R4:R5 is about 0.12:0.305:0.475:0.25.

5. spark plug according to claim 4, wherein the multiple lobes are made up of 7 lobes.

6. spark plug according to claim 1, wherein the cap has the finger for diametrically inwardly setting, it is described Be separated from each other for the lobes by finger, and each finger has the terminal that described each finger is extended to, when vertical To finger when being measured on direction the insulator is extended beyond what the thickness of the end was substantially equal to the positive pole The length of the part in portion.