How Does a Moped Work
Essentially, mopeds can be considered one of many two wheeled vehicles. This would explain why they are often referred to interchangeably with other similar vehicles such as scooters. However, for the point of this article, we will work on providing you with a brief overview of how a moped works.
Generally speaking, mopeds make use of a relatively small capacity engine. This is one of the reasons as to why gas models of mopeds get such incredible fuel economy. However, thanks to many different advancements in technology, you can now just as easily find gas and electric models of mopeds. And these electric engines work on a small capacity scale as well. Gas models tend to reach higher maximum speeds but both types usually fall within the 15 to 50 MPH range.
These models tend to be slower than scooters because of the way their engine displacement and transmission are set up. They run on a very small two stroke engine which does not have valves. The negative is that they top out at lower speeds but allow for a much simpler overall design (this also helps keep the overall cost down, too).
A two stroke engine is built to fire just a single time for every time there is a revolution or rotation of the crankshaft. In contrast, a four stroke engine is designed to fire once for every other rotation. This means that a two stroke engine is engineered with the potential to deliver twice the amount of power within a smaller space, helping to improve the overall efficiency of design.
In addition, it is because mopeds typically operate with a two stroke system that they are able to deliver an excellent power boost. This is also the reason why mopeds offer such quick and speedy acceleration.
As for how mopeds generate power, they make use of an electronic ignition system which most often employs a capacitor discharge ignition (sometimes referred to as a CDI). The CDI is enclosed in a box that contains an electrical transformer, a rectifier, a capacitor and a number of series circuits. This setup can create a high-voltage spark for combustion. The battery of the moped is what creates the electrical current that powers the CDI as well as the alternator. The alternator is a ring of wound metal wires that use the current from the battery to make an electrical field. This interacts with the magnets that are fixed to the engine�s flywheel, producing an alternating current which cycles back to the battery for a complete charging cycle.