Device that generates sparks in internal combustion engines
For other uses, see Spark plug (disambiguation).
Several sizes of spark plug (electrodes at the bottom)
Spark plug operation (the red/yellow star near the end of phase 2) in a four-stroke engine
A spark plug is an electrical device used in an internal combustion engine to produce a spark which ignites the air-fuel mixture in the combustion chamber. As part of the engine's ignition system, the spark plug receives high-voltage electricity (generated by an ignition coil in modern engines and transmitted via a spark plug wire) which it uses to generate a spark in the small gap between the positive and negative electrodes. The timing of the spark is a key factor in the engine's behaviour, and the spark plug usually operates shortly before the combustion stroke commences.
The spark plug was invented in 1860, however its use only became widespread after the invention of the ignition magneto in 1902. Diesel engines use compression ignition (instead of spark ignition), therefore they do not normally use spark plugs.
A sparkplug is an electrical device used in an internal combustion engine to produce a spark which ignites the air-fuel mixture in the combustion chamber...
Sparkplug wires (also called high tension leads) are electrical cables used by older internal combustion engines to transmit high-voltage electricity...
of a spark-ignition engine to transform the battery voltage to the much higher voltages required to operate the sparkplug(s). The sparkplugs then use...
where he also worked under the ring names Thurman "Sparky" Plugg, Bob "SparkPlug" Holly, and Bombastic Bob. After debuting in 1987, Holly worked for World...
established in 1936 and based in Nagoya, Japan. Formerly known as NGK SparkPlug Co. Ltd., the company’s automotive business (with its brands NGK Ignition...
system of older spark ignition engines. The distributor's main function is to route electricity from the ignition coil to each sparkplug at the correct...
higher density of fuel around the sparkplug, and a leaner mixture (lower density of fuel) further away from the sparkplug. In the homogeneous charge mode...
cylinder does not result from propagation of the flame front ignited by the sparkplug, but when one or more pockets of air/fuel mixture explode outside the...
operating temperature. Diesel engines, unlike common spark-ignition engines, do not use sparkplugs to ignite the air-fuel mixture. Instead, they rely solely...
Eyes)" with lyrics by Billy Rose, as well as the 1923 record "Come On, SparkPlug!" Barney Google himself, once the star of the strip and a very popular...
a sparkplug to thunder for a lightning discharge), light, and heat. Spark gaps were used historically in early electrical equipment, such as spark gap...
dome shape in the head receiving it. The hemi-head design places the sparkplug at or near the center of the chamber to promote a strong flame front....
engines. In order to accommodate a second sparkplug in the 4-valve combustion chamber, a smaller diameter sparkplug is located the very edge of the combustion...
wasted spark system is a type of ignition system used in some four-stroke cycle internal combustion engines. In a wasted spark system, the sparkplugs fire...
used in spark-ignition engines (such as petrol engines). It uses a magneto and a transformer to make pulses of high voltage for the sparkplugs. The older...
SplitFire was a company that manufactured a sparkplug featuring a split ground electrode. SplitFire claimed that its "V" electrode design improved combustion...
prototypes. Buick at that time was using Rajah sparkplugs. Durant thought they could manufacture sparkplugs to Champion's design cheaper than buying them...
on the base of the plug. The voltage for the spark is provided by an ignition coil or magneto that is connected to the sparkplug with an insulated wire...
Autolite or Auto–Lite is an American brand of sparkplugs and ignition wire sets headquartered in Cleveland, Ohio. Autolite products are sold in the United...
engines use a single sparkplug per cylinder, however some (such as the 1986-2009 Alfa Romeo Twin Spark engine) use two sparkplugs per cylinder. Compression-ignition...
coil output for a short period—enough to arc across the electrodes of a sparkplug. The contact breaker is operated by an engine-driven cam. On an engine...
difficult-to-remove sparkplugs, which can cause part of the sparkplug to become seized in the cylinder head. The source of the problem is a unique plug design that...
designs to trigger sparking. The Otto is one of the first engines to use a sparkplug, which is a device that produces a small electric spark to ignite the...
used in spark-ignition engines (such as petrol engines). It uses a magneto and a transformer to make pulses of high voltage for the sparkplugs. The older...
energy required for the sparkplug to counteract the compression of the fusion fuel and the tamper's momentum. The sparkplug weighed about 18 kg, and...
Global Information
