An Overhead Valve (OHV) engine is a type of internal combustion engine where the valves are located in the cylinder head, above the combustion chamber. This design allows for more efficient airflow into and out of the engine, improving performance and fuel efficiency. OHV engines typically use pushrods to operate the valves, which are activated by the camshaft. The OHV design is commonly found in many automobiles and motorcycles, offering a balance between power and size. This configuration is often praised for its simplicity and durability, making it a popular choice in various engine types and applications.