This standard specifies the special terms for spark plugs used in internal combustion engine electric spark ignition systems. This standard is applicable to the formulation of standards, the compilation of technical documents, the writing and translation of professional manuals, teaching materials and books. This standard does not apply to the special terms for spark plugs used in aviation and special internal combustion engines. GB/T 2900.9-1994 Electrical Terminology Spark Plug GB/T2900.9-1994 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Electrotechnical terminologySpark plug
1 Subject content and scope of application
This standard specifies the special terms for spark plugs used in the electric spark ignition system of internal combustion engines. GB/T 2900.9-94
Replaces GB2900.9--83
This standard is applicable to the formulation of standards, the compilation of technical documents, the writing and translation of professional manuals, teaching materials and books. This standard does not apply to the special terms for spark plugs used in aviation and special internal combustion engines. 2 Product terms
2.1 Spark plugspark plugs
Spark plugs are ignition devices for the electric ignition system of internal combustion engines. They form electric sparks by breaking through the spark gap with the help of pulsed high voltage to ignite the fuel-air mixture in the combustion chamber of the internal combustion engine. 2.1.1 (Insulator) Projected nose typespark plug A spark plug whose insulator skirt protrudes beyond the end face of the shell. 2. 1.2 Conical seat type spark plug A spark plug whose shell support surface seat has a cone surface with a cone angle of 63°±1° and matches the 60°-1 cone surface of the spark plug mounting hole of the engine cylinder head, and does not require an external sealing gasket.
2.1.3 Compact type spark plug A spark plug with reduced radial and axial dimensions. 2.1.4 Bantam type spark plug A spark plug with reduced axial dimensions.
Suppressed spark plug 2.1.5
A spark plug equipped with an interference suppressor.
2.1.5.1 Resistor spark plug A spark plug with a resistor connected in series inside the insulator. 2.1.5.2 Shielded spark plug A spark plug whose insulator and connection parts are shielded in a metal casing. 2.1.6 Semiconductor spark plug A spark plug whose insulator skirt is made of semiconductor material or covered with semiconductor material. Surface gap spark plug 2.1.7
A spark plug whose insulator skirt between the electrode and the shell discharges on the surface. Copper cored electrode spark plug 2.1.8
A spark plug whose center electrode or center electrode and side electrodes are both copper core. Approved by the State Administration of Technical Supervision on May 19, 1994 and implemented on January 1, 1995
3 Spark plug characteristics
3.1 Heat rating
GB/T 2900.9-94
An indicator of the ability of a spark plug to not self-ignite due to its own heat under normal conditions. 3.2 Cold fouling rating The ability of a spark plug to withstand contamination by combustion products under normal conditions, and also the rated value of the spark plug's self-cleaning ability. 4 Spark characteristics
(Electric) spark (electric) spark
A short-term discharge phenomenon with a momentary flash caused by the sudden breakdown of the air or other dielectric material separating the two terminals. 4.2 Spark gap sparkgap
A device that can produce spark discharge between its two or more electrodes under specified conditions. The spark gap of a spark plug refers to the gap that produces spark discharge. 4.3 Spark voltage UpsparkvoltageU.
The voltage when sparks are generated at both ends of the spark gap. 4.4 Spark current Ispspark current Isp The current flowing between the electrodes of the spark gap.
4.5 Spark duration tispsparkduration ttsp The time during which sparks are generated at both ends of the spark gap. 4.6 Spark energy EspsparkenergyEsp The total energy released by capacitive and inductive discharges between spark gap electrodes. 5 Engine ignition out-of-control phenomenon
5.1 Self-ignition
In a controlled ignition engine, any complete or partial abnormal combustion of the fuel-air mixture that is not ignited by the spark plug as the ignition source.
Note: When measuring the spark plug calorific value, the ignition is generated by the heat of the spark plug itself. 5.2 Pre-ignition
Self-ignition that occurs before the electric ignition point. Note: The electric ignition point refers to the moment when the spark plug has an electric spark before the piston rises to the top dead center, expressed as the best ignition angle of the crankshaft rotation. 5.3 Post-ignition
Self-ignition that occurs after the electric ignition point. 6 Abnormal phenomena in spark plug operation
6.1 Overheating
The phenomenon of self-ignition caused by the spark plug being unable to withstand the heat load of the engine. 6.2 Oil fouling
The phenomenon of excessive deposition of oil and dirt in the spark plug hot chamber and insulator skirt. 6.3 Carbon deposit
The phenomenon of excessive deposition of free carbon particles in the spark plug hot chamber and insulator skirt. 6.4 Lead fouling
The lead compound formed by the tetraethyl lead anti-knock agent in gasoline during combustion is deposited on the insulator skirt and hot chamber.
6.5 Miss firingwww.bzxz.net
GB/T2900.9-94
The phenomenon of the spark plug being unable to produce sparks due to itself or related conditions. 6.6
Gap bridging
The phenomenon that the electrode gap is connected by carbon particles or combustion residues and causes a short circuit. 111
Dwarf spark plug
Semiconductor spark plug
(Electric) spark
Resistance spark plug
Post-ignition
Spark duration
Spark current I.
Spark voltage Usp
Spark gap
Spark energy E
Spark plug
Gap bridging
(Insulator) protruding spark plug
Cold pollution resistance value
GB/T 2900.9--94
shielded spark plug
lead fouling
copper core electrode spark plug
compact spark plug
surface gap spark plug
suppressed spark plug
early ignition
conical seat type spark plug
self-ignition
bantam type spark plug.
carbon deposit
cold fouling rating
compact type spark plug
conical seat type spark plugcopper cored electrode spark plug(electric)sprak
gap bridging
heat rating
GB/T 2900.9—94
English Index
(insulator) projected nose type spark plugL
lead fouling
miss firing
oil fouling
overheating
post-ignition
pre-ignition
resistor spark plug
shielded spark plug
self-ignition
semiconductor spark plug
spark current Isp
spark duration tfsp
spark energy E..
spark gap
spark plug
:Spark voltage
suppressed spark plug
surface gap spark plug
GB/T 2900.9-~94
A1 Usage of parentheses () in this standard:
GB/T 2900.9—94
Appendix A
Standard usage instructions
(reference)
A1.1 Removing the parentheses and retaining the contents in the parentheses is the full name of the term; removing the parentheses and the contents in the parentheses is the abbreviation of the term. A1.2 The contents in the parentheses indicate supplementary explanations of the term or concept. A1.3 The contents in the parentheses indicate the scope of application of the term. Additional instructions:
This standard was proposed by the Ministry of Machinery Industry of the People's Republic of China. This standard is under the jurisdiction of the Machinery Standardization Research Institute of the Ministry of Machinery Industry. This standard was drafted by the Nanjing Spark Plug Research Institute of the Ministry of Machinery Industry. The main drafter of this standard is Gao Fenggang.
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