Motorcycles: An Overview Of Motorcycles And The First Motorcycle

1.0. What is ontology?

Basically, the term of ontology is derives from Greek and “onto” meaning and “logos” interpreted as “science”, that’s mean ontology can be understood as a science or study of being. The word can be divided into two senses such as exist an entity thing. Other than that this word is about what to be or to exist. According to Nicola (2009)” the word ontology can be used with different meaning in different communication. John Sowa (1998) study found that subject of ontology is the study of the categories of things that exist or may exist in some domain.

The topic that been chosen is motorcycles. I will describe ontology of motorcycles. In many of centuries human have ability to expand his abilities through the use of machine. Human has constantly devised a ways use a tools that increase their ability to explore the world around him, to go further, speedily more than before. Every years, human was produces many model of motorcycles that improve technology of engineering. Motorcycle history is begins around second half of 19th century. Motorcycles basically are from the “safety bicycle”. A bicycle with front and rear wheels with the same size and pedal crank mechanism. After years of the year, human were improved their technology of motorcycles that have engine and a part of motorcycles such as meter, horns, gear and etc.

Figure 1: First Motorcycle in the world

Types of motorcycles

There are five categories of motorcycles can be found in the world. Each of motorcycles has their advantages that give convenience and satisfaction for people. The categories of motorcycles such as cruiser, sport bike, standard, dual purpose and dirt bike. The categories of motorcycles can be recognized as seventh category fro...

... middle of paper ...

...er moving parts and is inexpensive to design and build for utilitarian purposes, it dominates the moped and commuter bike market, particularly in third world countries where cheap transportation is the motorcycle’s primary function. There are two principal differences between the two- and four-stoke designs. The first and most significant is that the basic two-stroke has no camshaft or valves; the fuel/air mix flows into the cylinder through holes or ports cut directly into the cylinder liner. The second major difference is the way the engine is lubricated. Unlike a four-stroke engine, the two-stroke uses its crankcase as a passageway for the fuel/air mix. Because the crankcase is sealed and used during one phase of the intake and compression cycles, it’s impossible to use it to store oil as a four stroke does (even dry sump systems store some oil in the crankcase).