Internal-combustion engines – High tension ignition system – Having auxiliary spark gap in series or parallel with the coil
Patent
1995-10-17
1997-07-01
Wolfe, Willis R.
Internal-combustion engines
High tension ignition system
Having auxiliary spark gap in series or parallel with the coil
123169R, 313124, F02P 1500, H01T 1346
Patent
active
056427212
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a technical field of ignition plugs for internal combustion engines using gasoline as fuel. The automobile manufacturing industry and the aircraft manufacturing industry using internal combustion engines make sincere efforts to decrease noxious substances like nitrogen oxides such as nitrogen dioxide and carbon oxides such as carbon monoxide contained in the exhaust gas emitted from engines, as efforts for developing low-pollution engines.
The present invention has been achieved to meet the demand for low-pollution engines. In the double ignition type ignition plug of the present invention, a sealed cavity is formed in the insulator outside the ignition plug, and electric arc rods are provided as parts of the feeder circuit in this cavity, to face each other with a clearance of about 10 mm kept between them. A spark is discharged in this clearance, and simultaneously, the largest possible powerful electric spark is generated at the ignition port element of the ignition plug. In this structure, electric sparks are generated simultaneously at two points by one ignition plug; inside and outside a cylinder of an engine. This system allows large electric sparks to be generated for perfect combustion of fuel gas. So, the ignition plug for double ignition systems can decrease the concentration of noxious substance in the exhaust gas by more than 60% compared to the conventional ignition plug, and can enhance the output of the engine of the same type by about 25%, for greater contribution to the traffic industry and the transport industry.
On the other hand, the electric spark generator of the present invention is used in combination with a conventional ignition plug, and since it is the same as the above double ignition type ignition plug in effect and action, it relates also to the same technical field.
2. The Prior Art
The conventional ignition plug for internal combustion engines adopts a single ignition system in which an electric spark is generated in a clearance of about 1 mm in the ignition port element of the ignition plug in a cylinder of an engine, for explosion of fuel gas. The efforts made by respective manufacturers of internal combustion engines for developing low-pollution engines have been centered on the improvement of the engine itself such as the CVCC (compound vortex controlled combustion) engine with a sub combustion chamber in addition to a main combustion chamber, and the catalytic methods for decreasing noxious substances in the exhaust gas. The CVCC engine is not used any more since the burning of lean mixture lowers the engine output, hence, lowers the driving performance and quality which the tomobiles are expected to achieve. On the other hand, the catalytic methods cannot be said to be perfect due to many problems such as the dissolution of the catalyst caused by imperfect combustion of fuel gas, even though the catalytic methods are mainly pursued for the development of low-pollution engines. In addition, the improvement of the engine itself and the adoption of any catalytic method require large costs. In this situation, little efforts have been made for the improvement of the ignition plug itself which has been made in the present invention.
SUMMARY OF THE INVENTION
This double ignition type spark plug has a cylindrical cavity enclosed as shown by symbol A in FIG. 2 which is within the portion or insulating outside of the ignition plug. The electric arc rods of nichrome wires, tungsten, or brass, are installed with a clearance of 5-15 millimeters (about 10 millimeters ideally) in the cavity. The cavity has a 7 mm diameter and 15 length. The spark is discharged at the gap within the cavity, and the discharge causes the charge to be collected in the conductor wire extending from the cavity to the ignition port element of the ignition plug. This increases the current at the ignition port element of the ignition plug and causes a large and powerful spark to be generated simultaneously in a structu
REFERENCES:
patent: 1406858 (1922-02-01), Henricks
patent: 1805752 (1931-05-01), Birdsall
patent: 2467725 (1949-04-01), Berkey et al.
patent: 2498822 (1950-02-01), Palmer
patent: 4770152 (1988-09-01), Mogi et al.
patent: 4944280 (1990-07-01), Washington
patent: 4983882 (1991-01-01), Mayring
patent: 5133328 (1992-07-01), Sato et al.
patent: 5142194 (1992-08-01), Jacubeit et al.
patent: 5201302 (1993-04-01), Furuya et al.
patent: 5402766 (1995-04-01), Tsuchiya et al.
Snider Ronald R.
Wolfe Willis R.
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