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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 ...
In June 2022, BMW revealed the first BMW M3 Touring, codenamed G81. Based on the seventh generation 3 Series, it marks the first time a BMW M Touring model reached the market. [ 27 ] The touring version of the M3 contains the same engine and interior setup as the M3 sedan, but extends the roof line to become a wagon .
An ignition magneto (also called a high-tension magneto) is an older type of ignition system used in spark-ignition engines (such as petrol engines). It uses a magneto and a transformer to make pulses of high voltage for the spark plugs. The older term "high-tension" means "high-voltage". [1]
Spark plug with single side electrode An electric spark on the spark plug. A spark plug (sometimes, in British English, a sparking plug, [1] and, colloquially, a plug) is a device for delivering electric current from an ignition system to the combustion chamber of a spark-ignition engine to ignite the compressed fuel/air mixture by an electric spark, while containing combustion pressure within ...
The ignition coils for these can be combined into a single casing (a coil pack) and located away from the spark plugs; however it is increasingly common for coil-on-plug systems to be used, whereby the individual ignition coils are small units attached directly to the top of each spark plug. An advantage of coil-on-plug systems is that in the ...
In tune with BMW's core values regarding handling dynamics, [33] the E46 was initially available with a rear-wheel drive layout and a 50/50 weight distribution. [ 28 ] [ 34 ] All-wheel drive , which was last available in the 3 Series in 1991, [ 35 ] was reintroduced for the E46 on the 325xi, 330xi and 330xd models.