Yesterday I discussed the overall reasons that fuel injection systems were designed to satisfy. If you asked people when the first fuel injection system was invented you might get some answers such as 30 years ago or perhaps even 50 years ago. However according to Wikipedia the first patent for a fuel injection system was issued for a crude system for a motorcycle in 1896, or over a hundred years ago. So the idea of how to mix air and fuel and produce power has been around for a long time.
In the 1920's many diesel engines were using a mechanical fuel injection system. It was also very heavily used in aviation systems during WW II. For automobile use one of the first was on a classic automobile the Mercedes-Benz 300SL. In addition to its mechanical fuel injection system it was noted for using Gull Wing Doors.
Both Bosch and Lucas developed mechanical systems which were used on high end and sports cars such as Porsche, BMW, Peugeot, Maserati, Aston Martin and Triumphs.
In 1957 Chevrolet offered a mechanical system that was used on its 283 V8 engine. This system was not a "pulse" or intermittent injection, but rather a constant flow system, metering fuel to all cylinders simultaneously from a central "spider" of injection lines. The fuel meter adjusted the amount of flow according to engine speed and load, and included a fuel reservoir, which was similar to a carburetor's float chamber.
During the 1960 other types of mechanical systems were introduced and used primarily on racing engines which were designed to be running flat out, and did not need a low speed capability.
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