Sparking plug of gasoline engine

Abstract

The invention relates to a sparking plug of a gasoline engine. The sparking plug of the gasoline engine comprises a high voltage nut, an insulation porcelain body, a bonding body and a high voltage leading-out electrode. An insulating layer is arranged between the high voltage leading-out electrode and the inner wall of the bonding body. The bonding body is provided with a ground wire arcing electrode. The sparking plug of the gasoline engine is characterized in that the side face where the end of the ground wire arcing electrode extends to the end of the high voltage leading-out electrode is opposite to the side wall of the end of the high voltage leading-out electrode, and the opposite arcing faces at the end of the ground wire arcing electrode and the end of the high voltage leading-out electrode are both spherical surfaces. According to the sparking plug, due to the fact that the opposite arcing faces at the end of the ground wire arcing electrode and the end of the high voltage leading-out electrode are both the spherical surfaces, a point discharge effect is formed, so that the electric spark is stable, and the strength is higher; the obstruction of combustion molecule diffusion is smaller, combustion molecule diffusion is more smooth, the arcing direction is also changed to be the direction facing the deep portion in a combustion chamber, and therefore the combustion efficiency of combination gas is greatly improved.

Description

technical field [0001] The invention relates to a gasoline internal combustion engine spark plug. Background technique [0002] The spark plug of a gasoline internal combustion engine usually consists of a high-voltage electric nut, an insulating porcelain body, a ground iron body (ground wire) with a hexagonal cap and a thread, the high-voltage electric nut protrudes from the end of the insulating porcelain body, and the high-voltage electric lead-out pole is connected from the The center of the ground iron body at the other end is exposed, and an insulating layer is provided between the high-voltage electric lead-out pole and the inner wall of the ground iron. A ground jumper pole extends from the ground iron body to the front of the top of the high-voltage electric lead-out pole, and the ground wire jumps A flashover is formed under high voltage between the end of the fire pole and the end of the high-voltage electric lead-out pole. In the traditional spark plug, because...

AI Technical Summary

Problems solved by technology

In the traditional spark plug, because the flashover surface of the ground wire and the high-voltage lead-out pole is flat, the spark is scattered, the flashover intensity is weakened, and the explosion wave blocking surface is too large, which affects the combustion effect; and the ground wire The flashover pole is in front of the end of the high-voltage electric lead-out pole, so the burning molecules can only bypass the grounding body and spread downward; the explosion wave is blocked by the grounding body; the ignition point is far away from the piston, and the force on the piston is slow; like Figure 2-4 shown

Images