The Anatomy of a Motorcycle Engine

(Last Updated On: November 2, 2022)

It may be that you have been puttering along on your single piston motorcycle for a long time without a care in the world. Or you may the owner of a veritable monster that either roars or is entirely silent. Whatever the case, motorcycle engines can be thought of as being as old as engines themselves. After all, there is something about motorcycles that simplistic itself. Take two wheels and strap on an engine and you are good to go. It’s not that farfetched to get there from the horse drawn carts of yesteryear. This article looks at the anatomy of a motorcycle engine. It’s intended to help you understand both the complexity and simplicity of the monster that roars under you as you go down the road.

Steam Engines

The first engines of any kind ran on steam, and it’s not really that surprising that the first motorcycles were powered this way. In 1868, Frenchman Michaux Perreaux produced the first example of a motorcycle engine that was powered by steam. Steam engine bikes were actually produced for the general public in the 20th century.

Gasoline Engines

Despite the fact that steam engines had been around for a while, the first motorcycle is generally considered to be Gottlieb Daimler’s two wheeler. That’s because it was the first one that came with an internal combustion engine.

Electric engines

Motorcycles have, over the past few years, not been spared the raucous that has been taking place with regard to protecting the environment. This has given rise to electric and diesel engine motorcycles. A major advantage for electric motorcycles in particular is that they are really quite when compared to conventional bikes.

The anatomy of an internal combustion motorcycle engine

In spite of this varied history, the fact remains that the vast majority of the motorcycle engines that are out there run on gasoline and are internal combustion engines. Today, most motorcycles have either a two or a four stroke internal combustion engine.

The thing to note here is that motorcycle engines, in principle, run in about the same way as any other internal combustion engine. What this means is that they have a cylinder block, a head, pistons and a valve train.

How does it work?

So, how does a motorcycle engine work? Well, to put it simply, fuel (gasoline-air) explosions move the pistons up and down within the motorcycle engine’s cylinder block. The ignition is provided by spark plugs. The choreographic opening and closing of valves allow the fuel and air mixture to get into the combustion chamber.

The crankshaft

The up and down movement of the pistons is what turns the crankshaft. The energy that is produced this way is then transformed into motion for your bike. The motion is transmitted to the rear wheel of your bike through the transmission.

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