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2. Engine knocking - Wikipedia

   en.wikipedia.org/wiki/Engine_knocking

   In spark-ignition internal combustion engines, knocking (also knock, detonation, spark knock, pinging or pinking) occurs when combustion of some of the air/fuel mixture in the cylinder does not result from propagation of the flame front ignited by the spark plug, but when one or more pockets of air/fuel mixture explode outside the envelope of the normal combustion front.

3. Wasted spark system - Wikipedia

   en.wikipedia.org/wiki/Wasted_spark_system

   A wasted spark system is a type of ignition system used in some four-stroke cycle internal combustion engines. In a wasted spark system, the spark plugs fire in pairs, with one plug in a cylinder on its compression stroke and the other plug in a cylinder on its exhaust stroke. The extra spark during the exhaust stroke has no effect and is thus ...

4. List of Volkswagen Group petrol engines - Wikipedia

   en.wikipedia.org/wiki/List_of_Volkswagen_Group...

   mapped direct ignition with centrally mounted spark plugs and ten individual direct-acting single spark coils; two Bosch Motronic MED 9.1 or Lamborghini LIE electronic engine control units (ECUs) working on the 'master and slave' concept due to the high revving nature of the engine exhaust system

5. Coso artifact - Wikipedia

   en.wikipedia.org/wiki/Coso_artifact

   Coso artifact in 2018. The Coso artifact is an object falsely claimed by its discoverers to be a spark plug encased in a geode.Discovered on February 13, 1961, by Wallace Lane, Virginia Maxey, and Mike Mikesell while they were prospecting for geodes near the town of Olancha, California, it has long been claimed as an example of an out-of-place artifact. [1]

6. Firing order - Wikipedia

   en.wikipedia.org/wiki/Firing_order

   For this inline-4 engine, 1-3-4-2 could be a valid firing order.. The firing order of an internal combustion engine is the sequence of ignition for the cylinders.. In a spark ignition (e.g. gasoline/petrol) engine, the firing order corresponds to the order in which the spark plugs are operated.

7. Holden straight-six motor - Wikipedia

   en.wikipedia.org/wiki/Holden_straight-six_motor

   The Holden straight-six motor is a series of straight-six engines that were produced by General Motors Holden at their Port Melbourne plant between 1948 and 1986. The initial Grey motor was so dubbed because of the colour of the cylinder block, later motors came in the form of a Red, Blue, Black, and the four-cylinder Starfire engine.

8. Toyota E engine - Wikipedia

   en.wikipedia.org/wiki/Toyota_E_engine

   In 1995 Toyota changed the ignition system to a distributor-less (DIS), coil-on-plug design, switched from OBD to OBD-II and began using flat topped pistons. This ignition design uses two coils. Each coil mounts on top of a spark plug, but also has a cable run to another cylinder's spark plug. This is known as a "wasted spark design". It is ...

9. Rolls-Royce Merlin - Wikipedia

   en.wikipedia.org/wiki/Rolls-Royce_Merlin

   Initial tests were conducted using 6.5 cubic centimetres (0.23 imp fl oz) of tetraethyllead (T.E.L.) for every one imperial gallon of 100-octane fuel (or 1.43 cc/L or 0.18 U.S. fl oz/U.S. gal), but this mixture resulted in a build-up of lead in the combustion chambers, causing excessive fouling of the spark plugs.