Spark plug of ignition system for combustion engine, has vent passage that is provided for ventilating accommodation space, and is surrounded on all sides by electrically conductive material

摘要

#CMT# #/CMT# The spark plug (1) has a housing (2) made of electrically insulating material. The housing has a receiving space (3) for partially receiving a spark plug. An electrically conductive contact element (4) is provided in the housing for electrical contact with the spark plug. A vent passage (6) is provided for ventilating the receiving space. The vent passage is surrounded on all sides by an electrically conductive material. #CMT# : #/CMT# An independent claim is included for an ignition system. #CMT#USE : #/CMT# Spark plug of ignition system for combustion engine. #CMT#ADVANTAGE : #/CMT# The hazard of partial discharge of gas in the receiving space is reduced by providing the vent passage, so that ignition voltage of the ignition system is increased. The vent passage is formed at low cost. The insulation effect of the spark plug is improved. The assembly and disassembly of the spark plug is performed easily. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a sectional view of the spark plug. 1 : Spark plug 2 : Housing 3 : Receiving space 4 : Electrically conductive contact element 6 : Vent passage.