JPS58176807A - High tension cable for ignition plug of internal combustion engine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a high tension cable that connects a spark plug and a distributor of an internal combustion engine.

Conventionally, this type of high tension cable connects a spark plug of an internal combustion engine to a distributor, and applies a high voltage from the distributor to each spark plug in sequence to cause the spark plugs to discharge.

However, in the case of such conventional high tension cables, the ignition plug of each cylinder and each high voltage terminal of the distributor are connected by separate high tension cables, and current flows to the high tension cable of the ignition cylinder. At the time, other high tension cables were at play.

In addition, the discharge time of the ignition plug needs to be increased to some extent in order to improve the ignition performance, but conventionally this is achieved by utilizing the self-inductance of the secondary coil of the ignition coil and the actance of the high-tension cable. The discharge time was extended.

For this reason, there was energy loss in the actance portion of the high tension cable.

This invention was created by paying attention to this current situation.
By combining multiple cables of approximately the same length and twisting them together into a coil, the self-inductance in the coil section is used to lengthen the discharge time, while the mutual inductance allows the current to flow through a single cable. (by the magnetic field generated when flowing) generates an electromotive force in other cables,
By utilizing this electromotive force, an electric field is generated between the electrodes of the spark plugs in cylinders other than the multi-ignition cylinder, and the ionization and atomization of the gasoline fuel between those electrodes is promoted, thereby reducing the conventional energy loss. A portion of this amount can be used to improve combustion efficiency.

The present invention will be explained below based on an embodiment shown in FIGS. 1 to 4.

To explain the configuration, the high tension cable 1 includes four cables 2A each having four insulation coatings.

By forming the cables 2B, 2C, and 2D to have approximately the same length, and twisting these cables 2A, 2B, 20, and 2D together around the core wire 3 as shown in FIG. A coil portion 4 is formed and is integrated with an insulating member 5. In addition, 6 is a plug connected to an ignition plug (not shown), a plug connected to a distributor (not shown) of Company T, and 8 is each cable 2A.

These are the core wires of 2B, 2C, and 2D.

Next, the function of the high tension cable 1 having such a configuration will be explained with reference to FIG. 4 based on a specific example when a high voltage that is multi-distributed by a distributor is applied to the first cable 2'A. do.

When a current flows through the two people on the first cable, a magnetic field is generated in the coil portion 4 of the two people on the first cable, and this magnetic field causes the second person to
Approximately the same voltage is generated in the fourth cables 2B, 2C, and 2D due to the mutual inductance L', and this voltage is applied to the spark plug of each cylinder other than the ignition timing.

In particular, when a voltage is applied to the spark plug of a cylinder during the intake stroke, atomization and ionization of gasoline particles are promoted near the electrodes of the spark plug. To explain this in detail, when a voltage is applied between the electrodes of a spark plug, the gasoline droplets near the electrodes are charged with the same polarity and repel and disperse. At this time, since the surface tension of the gasoline droplets is weaker, they are dispersed more finely than conventional droplets, and the atomization of gasoline particles is promoted. Therefore, complete combustion of gasoline fuel can be promoted and combustion efficiency can be improved.

In addition, the air-fuel mixture between the electrodes of the spark plug is charged at a high voltage and is ionized, which lowers the breakdown voltage that occurs during the next ignition. Since it can be blown away, combustion efficiency can be further increased.

Since the first to fourth cables 2B, 2C, and 2D are twisted together, their coil parts 4
Since the shapes are almost the same, their self-inductance L
' and mutual inductance L' can be made the same. Therefore, those cables 2A, 2B, 2
# to the spark plug connected to C, 2D! ! , can apply the same voltage, so that atomization and ionization of gasoline particles can be performed in the same way in all cylinders. In addition, the high tension cable 1 includes four cables 2A, 2B, 2C,
Since the 2D is covered by the insulating member 5, the life of the cable can be improved. Moreover, the discharge time of the spark plug of each cylinder can be increased due to the self-inductance L.

In this embodiment, the cables 2A and 2B.

2C and 2D are covered by the insulating member 5, but
The present invention is not limited to this, and for example, four cables may be wrapped around the tape.

Further, in the embodiment, four cables are used for four cylinders, but the present invention is not limited to this, and the same number of cables as the number of cylinders may be twisted together.

As explained above, in the present invention, a plurality of cables of approximately the same length are twisted together into a coil shape and integrated, so that the mutual inductance of the coil part can be used to control cylinders other than the ignition timing. Since voltage can be applied to the cylinders, the gasoline particles can be ionized and made into fine particles in those cylinders, while the self-inductance of the coil section can lengthen the discharge time, which reduces the energy loss that would normally occur in the past. Some of it can now be used to improve combustion efficiency.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram showing an embodiment of the present invention, Fig. 2 is a schematic diagram showing the same as the above ■ - Kawakawa surface view Fig. 3 is a schematic diagram showing the coil part of the same as the above, and Fig. 4 is an equivalent circuit diagram of the same as the above. be. 1...High tension cable 2A, 2B, 2C
, 2D... Cable 4... Coil part 5...
・Insulating material special fraud Applicant: Japan Electronics Co., Ltd. Agent Patent attorney: Fujio Sasashima

Claims (1)

[Claims] It is characterized by integrating multiple cables of approximately the same length, each having a connection part with a spark plug at one end and a connection part with an IJ computer at the other end, and twisted together into a coil shape. High tension cable for spark plugs of internal combustion engines.