The DFV engine, or Double Four Valve engine, is a type of internal combustion engine designed by Colin Chapman and developed by Ford in the 1960s. It features a unique design with four valves per cylinder, which enhances airflow and improves performance. This engine became famous in the world of Formula One racing, powering many successful cars during its time. The DFV engine is known for its lightweight construction and high power output, making it a popular choice among racing teams. Its innovative design allowed for better fuel efficiency and increased reliability, contributing to its dominance in motorsport for over a decade.