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  2. Ignition timing - Wikipedia

    en.wikipedia.org/wiki/Ignition_timing

    Pressure in cylinder pattern in dependence on ignition timing: (a) - misfire, (b) too soon, (c) optimal, (d) too late. In a spark ignition internal combustion engine, ignition timing is the timing, relative to the current piston position and crankshaft angle, of the release of a spark in the combustion chamber near the end of the compression stroke.

  3. Dual ignition - Wikipedia

    en.wikipedia.org/wiki/Dual_ignition

    A simple form of partial dual ignition on some amateur-built aircraft uses a single spark plug, but duplicates the coil and pick-up for better redundancy than traditional single ignition. [ 9 ] A further form of partial dual ignition (such as on the Honda VT500 ) is for each cylinder to have a single HT coil which sends the current to one plug ...

  4. Spark-ignition engine - Wikipedia

    en.wikipedia.org/wiki/Spark-ignition_engine

    A four-stroke spark-ignition engine is an Otto cycle engine. It consists of following four strokes: suction or intake stroke , compression stroke , expansion or power stroke , exhaust stroke . Each stroke consists of 180 degree rotation of crankshaft rotation and hence a four-stroke cycle is completed through 720 degree of crank rotation.

  5. Spark plug - Wikipedia

    en.wikipedia.org/wiki/Spark_plug

    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 ...

  6. Wasted spark system - Wikipedia

    en.wikipedia.org/wiki/Wasted_spark_system

    The coilpack fires the spark plugs in two cylinders simultaneously so for example 1&4/2&5/3&6 cylinders fire together, the spark plug in one cylinder on a compression stroke is where the power comes from, and the spark plug in the other cylinder on an exhaust stroke does nothing. Coils in a wasted spark system may be in pack form, or they may ...

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  8. DeWalt - Wikipedia

    en.wikipedia.org/wiki/DeWalt

    On September 1, 2016, DeWalt debuted its FlexVolt hybrid voltage battery pack that can switch between series battery wiring providing 60 V (54 V nominal) and 2 Ah, or parallel wiring for 20 V (18 V nominal) and 6 Ah, depending on whether it is installed in a 60 V or 20 V tool, determined by communication between the tool and battery.

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!