JPH033972A - Distributor for internal combustion engine - Google Patents

Abstract

PURPOSE:To obtain a remarkable suppression effect of noise radio waves even as a result of the measurement by quasi-peak detection and prevent the peeling of a dielectric grain layer by a discharge by providing a distributing piece electrode formed with the dielectric grain layer fixed by a binder material on the surface. CONSTITUTION:A distributing piece electrode 3 has an irregular shape 3a at its tip and is formed with an inclined face 3b to stabilize a discharge, and a dielectric grain layer 9 fixed by a binder material 8 is formed on the surface. The dielectric grain layer 9 is fixed by the binder 8, thus it is not peeled by a discharge, the occurrence of noise radio waves is suppressed, and the noise radio wave suppression effect can be confirmed to be remarkable in both the measurement of noise radio waves by peak detection and the measurement of noise radio waves by quasi-peak detection.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a power distribution device for an internal combustion engine, and more particularly, to an internal combustion engine power distribution device that takes measures to suppress noise radio waves caused by discharge sparks accompanying power distribution operation. This is related to flashing power distributors.

[Conventional technology]

Figure 2 shows a conventional power distribution device for internal combustion engines, in which a distribution electrode (3) is attached to a distribution electrode (2) fixed to a rotating shaft (1) that rotates in synchronization with the rotation of the crankshaft of the internal combustion engine. A discharge gap (g
) A plurality of side electrodes (4) are arranged through the lateral electrodes (4).

A contact (6) connected to the ignition coil by a conductor JQ (5) is pressed onto the upper surface of the distribution electrode (3).

With the above configuration, as the electron distribution electrode (2) rotates, the distribution wt electrode (3) approaches the side electrode (4) arranged close to the rotation locus of the distribution electrode (3). In each case, a high voltage is applied by a discharge through a discharge gap (g),
Due to the discharge generated in the discharge gap (g), power is sequentially distributed to the spark plugs of each cylinder.

At this time, noise radio waves are generated by the spark discharge generated in the discharge gap (g) between the distribution W1 pole (3) and the side electrode (4). These noise radio waves cause radio wave interference to radio broadcasts, TV broadcasts, various '511A communication devices, and electronic devices, and worsen the S/N ratio.

As a means for suppressing the generation of such M sound radio waves, there is a conventional method disclosed in Japanese Patent Publication No. 51-38853.
As shown in FIG. 3, this is a high-resistance material layer (a) formed on the surface of a portion of the distribution electrode (3) close to the side electrode (4).

With the above configuration, the distribution electrode (3) and the side electrode (4)
The electric field strength of noise radio waves generated during open discharge can be reduced.

[Problem to be solved by the invention]

Conventional m8 as above! By providing a high-resistance material layer on the distribution electrode, the Sekikawa power distribution device can obtain considerable effects when using peak detection (SAF) among noise radio wave measurement methods using detection methods, but quasi-peak detection ( C.I.S.
In the case of PR), sufficient effects were not seen, and as a result, there was a problem that problems caused by noise radio waves remained unsolved, especially in FM radio.

In order to solve the above problems, there is a method in which dielectric particles are fixed with grease or a face to form a dielectric particle layer on the surface of the electron distribution electrode, but the grease or face has the disadvantage that it peels off due to discharge. .

This invention was made in order to solve the above problems, and it has a dielectric particle layer that has a remarkable effect of suppressing noise radio waves even in the measurement results by quasi-peak detection, and that does not peel off due to discharge. The object of the present invention is to obtain a power distributor for an internal combustion engine having a power distribution electrode.

[Means to solve the problem]

A power distribution device for an internal combustion engine according to the present invention includes a distribution electrode on the surface of which a layer of dielectric particles fixed with a binder material is formed.

[For production]

In this invention, the dielectric particle layer firmly fixed with the binder material suppresses the generation of noise radio waves accompanying discharge.

〔Example〕

FIG. 1 shows an embodiment of the present invention, in which the electron distribution electrode (3)
The distal end thereof has a jagged shape (3a) and an inclined surface (3b) is formed to stabilize the discharge. A layer of dielectric particles (9) fixed by a binder material (8) is formed on the surface of the electron distribution electrode (3). As the binder material (8), N++Cr9Mo*C
Metals such as o are preferred. Also, dielectric particles (9)
is selected from Si, SiC, ^1□03, etc.

The other configurations are the same as shown in FIG.

With the above configuration, the dielectric particle layer (9) has a binder material (
8), it does not peel off due to discharge, suppresses the generation of noise radio waves, and can be used to measure noise radio waves by peak detection (SAF) and quasi-peak detection (CTSPR).
It was confirmed that the effect of suppressing radio noise was remarkable in all measurements of radio noise.

Furthermore, the above-mentioned effects could be confirmed using data in measurements of noise electric field strength at each frequency and auditory judgment.

〔Effect of the invention〕

As described above, according to the present invention, since a layer of dielectric particles fixed with a binder material is formed on the surface of the electron distribution electrode, the discharge resistance is high, and it is possible to use either peak detection or quasi-peak detection measurement method. It is also possible to obtain a device that has the effect of suppressing noise radio waves.

[Brief explanation of the drawing]

FIG. 1 shows (a) a partially cutaway plan view of the main part of this invention and (
b) Side sectional view, FIG. 2 is a partially sectional side view of a conventional power distributor for an internal combustion engine, and FIG. 3 is a side sectional view of the same main part. (1) Rotating shaft, (2) Electron distribution, (3) Electron distribution electrode, (4) Side electrode, (8) Binder material, (9
)...Dielectric particle layer. In each figure, the same reference numerals indicate the same or corresponding parts. yIf-, Figure 1 W12 Contents of amendment to procedural amendment

Claims (1)

[Claims] A distribution electrode provided on a distribution electrode fixed to a rotating shaft that rotates in synchronization with the rotation of the crankshaft, and a discharge gap disposed on the rotation locus of the distribution electrode. A power distribution device for an internal combustion engine comprising a plurality of side electrodes, characterized in that the distribution electrode has a dielectric particle layer fixed with a binder material formed on its surface. power distribution device.