When did OVBs start?

Written by Editorial Team | Last Updated: August 2026

Overhead Valve (OHV) engines traces their foundational engineering development back to the late nineteenth and early twentieth centuries, with pioneering designs patented and adopted in automotive and industrial applications around 1903. The architecture revolutionized internal combustion performance by placing intake and exhaust valves directly above the combustion chamber in the cylinder head, dramatically improving airflow, volumetric efficiency, and power output across automotive and aviation powerplants.

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