| 摘要 |
Invention relates to the electric spark-plugs and can be used in internal combustion engines. The main point of the invention is the following: the electric spark-plug has the circular groove on the bottom side of the plug's case, which enters the combustion chamber. This groove can be symmetric or asymmetric in relation to the longitudinal axis of the plug and its walls can have rectangle shape or the other shape made in correspondence with some function. The groove's surface can be formed from the combined shapes. On the same part of the plug's case there can be the additional furrows. The motor oil emerged in the combustion chamber flows through the chamber surface, then flows through the case's external surface of the plug, comes into the circular groove, where it is burned and so did not get to the thermal cone of the insulator and electrodes, thus the greasing of the plug and information of the shunting snuff is prevented. Simultaneously, fuel-aerial mixture collides with the furrow's ribs, gets higher quality, developing better conditions in the mixture combustion zone. |
