The design of a two-stroke engine allows for air and fuel to be simultaneously taken in (via the transfer port) and pushed out (via the exhaust port) using the compression and suction (i.e., the vacuum) created (within the combustion chamber) from the piston is moving up to ‘top dead centre, and then down to ‘bottom dead centre.ĭoing so replaces the need for ‘intake valves’, ‘exhaust valves’ and their associated strokes. The four-stroke cycle in a combustion engine is made up of an intake stroke(1), compression stroke(2), power stroke(3), and exhaust stroke(4).Ĭonversely, a two-stroke engine’s cycle comprises just a compression stroke (1), and a power stroke (2). How does A Motorcycle’s Engine cycle Relate To An Activated kill switch? CDI box: Power to or from the CDI (capacitor discharge ignition box) will be either disrupted or short-circuitedīut it doesn’t stop there, as the engine’s cycle (i.e., strokes) is also affected during this process too.Spark plug cap + Spark plug: Attached to the end of the HT cable and will stop working when no power is being supplied from the ignition coil.HT leads/cables: This cable is what runs from the ignition coil to the spark plug cap.Ignition Coil: Activated kill switches will stop power to the ignition coil.The specific engine components that are affected by an activated kill switch include: Motorcycle ignition systems commonly comprise a battery, coil pack, spark plugs (including its associated wires), pickup coils or crank position sensors, and capacitor discharge ignition boxes (i.e., CDI units). What Engine Components Are Affected When The Kill Switch Is Activated? It’s important to note that kill switches are not just limited to ignition systems, as they can also be wired into fuel systems (to starve the engine of fuel and cause the engine to shut off), or any other electrical system that’s essential (i.e., needed) for the engine to run. Kill switches (specifically in motorcycles) work by short-circuiting (or disrupting) the current passing through an engine’s ignition system (i.e., ignition coil, CDI, Spark plug, battery) to prevent the spark plug from creating the spark that is needed (for the power stroke) to ignite the fuel/air mixture contained within the combustion chamber. Ignition wire kill switches (most common type)īut, How exactly Do Motorcycle Kill Switches Work?.Generally, there are four types of kill switches commonly used for motorcycles, which include: What Types of Kill Switches Are Used In Motorcycles? Precisely, What is A Motorcycle kill switch?Ī kill switch (also known as emergency stop (E-stop), emergency off (EMO) or emergency power off (EPO), is a safety mechanism used to immediately shut off a motorcycle’s engine in an emergency.ĭue to the nature of when a kill switch is most useful, motorcycle manufacturers ensure they are installed in places where they can be easily accessed (i.e., handlebars, under the seat with a yellow or red button/switch) and activated (usually via an on/off switch) by riders or bystanders in an emergency. Does using a Kill switch impact the health of An engine?.What happens If you Accidentally hit the kill switch while riding?.How do You Shut Off A Motorcycles Engine when the Kill Switch Or Key Ignition Is Not Available?.A Quick Guide For Installing A Motorcycle Kill Switch.
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