A single-cylinder engine typically has how many lobes on the camshaft?

A single-cylinder engine typically has one lobe on the camshaft for each intake and exhaust cycle. In a single-cylinder engine, to achieve the basic function of opening and closing the intake and exhaust valves, a two-lobe camshaft is necessary. One lobe operates the intake valve, allowing the air-fuel mixture into the combustion chamber, while the other lobe controls the exhaust valve, allowing the combustion gases to exit after the combustion process.

In contrast, multiple-lobe configurations may be needed for more complex engines, like those with multiple cylinders or advanced timing features. Therefore, understanding the function of lobes on the camshaft is critical in optimizing the engine's performance and efficiency.