***Note: Over 200,000 Hydra-Matics were sold during the war.īorg Warner introduced the first automatic transmission with 3 speeds and the use of a lock-up torque converter. By this point, ¾ of General Motors cars sold came equipped with this option. During the post-war time, the demand for vehicles with the Hydra-Matic was high. These tanks were equipped with the Hydra-Matic Transmission. 1942, World War II: The automotive plants stopped building cars so they could focus on building tanks and military vehicles for the war. This forever changed the automotive industry. This was the first AT to be mass-produced. They started production on the Hydra-Matic in 1940 to be sold as an option in the Oldsmobile line. General Motors bought the prototype and plans and introduced the first hydraulic transmission called the Hydra-Matic. The inventors of the first hydraulic transmission were two Brazilians engineers: José Braz Araripe and Fernando Lehly Lemos.ġ940 Oldsmobile with Hydra-Matic Transmission The Invention of the Hydraulic Transmission General Motors sold the AST in three of their models between the years of 1937-1938 the Oldsmobile, Cadillac, and Buick as an upgrade option. It did have 4 forward gear ratios, but no reverse or parking gear. This, however, created a huge lack of power. He designed it using air pressure rather than hydraulic fluid. The AST was patented in 1923. Alfred Horner Munro was a Canadian steam engineer by trade. It was called “Automatic Safety Transmission” (AST). The inventor of the first automatic transmission (AT) was: Alfred Horner Munro. Alfred Horner Munro was Born in Regina, Saskatchewan’s, Canada. Our expert mechanics have the experience, advanced automotive equipment, and mechanical expertise to diagnose and repair your car or truck's transmission problem quickly and accurately. Automatic Transmissions- A Brief History Auto Service Experts San Antonio Transmission Repair Shopįor automatic transmission repair, rebuilding, or service in San Antonio, trust your vehicle to the certified transmission specialists at auto service experts.
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