OVER SQUARE Meaning and
Definition
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Over square refers to the engine design where the bore diameter (the internal diameter of the cylinder) is larger than the stroke length (the distance the piston travels inside the cylinder). This design ratio is commonly used in internal combustion engines, especially in high-performance vehicles or motorcycles.
In an over square engine, the larger bore allows for larger valves and more efficient airflow into and out of the combustion chamber. This results in improved power output, higher engine speeds, and increased overall performance. The shorter stroke length reduces the distance the piston has to travel, reducing frictional losses and allowing for faster acceleration and response.
The term "over square" is derived from the geometric shape that describes this ratio, where the bore diameter is represented by the horizontal measurement (square), and the stroke length corresponds to the vertical measurement (less than the square). The ratio is usually expressed as a number, such as 1.25:1, indicating that the bore diameter is 1.25 times larger than the stroke length.
It is important to note that the over square design is just one aspect of an engine's overall performance, and other factors such as fuel efficiency, torque, and emissions also play vital roles. The specific design choices will depend on the intended use, desired performance characteristics, and engineering trade-offs for a particular application.
Common Misspellings for OVER SQUARE
- iver square
- kver square
- lver square
- pver square
- 0ver square
- 9ver square
- ocer square
- ober square
- oger square
- ofer square
- ovwr square
- ovsr square
- ovdr square
- ovrr square
- ov4r square
- ov3r square
- ovee square
- oved square
- ovef square
- ovet square
Etymology of OVER SQUARE
The term "over square" is commonly used in the context of engines, particularly to describe their design and characteristics.
The word "square" in this context refers to the ratio between the cylinder bore and the piston stroke in an engine. If the bore and stroke are equal or very close, the engine is considered "square". On the other hand, if the bore is larger than the stroke, the engine is called "over square".
The term "over square" originates from the geometry of the engine's piston movement. When the bore is larger than the stroke, the piston travels a shorter distance vertically within the cylinder, resulting in a smaller piston motion square. Therefore, the "over square" terminology emphasizes that the bore exceeds the stroke, indicating an engine design where the diameter of the cylinder is greater than the length of the piston stroke.
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