Mercedes early f1 cars used aerospace tech,El Scorchio wrote: ↑Mon Jun 21, 2021 8:15 pm
"Firsts included the use of desmodromic valves and Daimler-Benz developed mechanical direct fuel injection adapted from the DB 601 high-performance V12 used on the Messerschmitt Bf 109E fighter during World War II."
"The new 1954 Formula One rules allowed a choice of naturally aspirated engines – up to 2.5 litres or 0.75 litres supercharged. The expected target range for competitive engines was 250 to 300 bhp (190 to 220 kW).
Mercedes' 1939 2-stage supercharged 1.5-litre 64.0×58.0 mm V8 (1,493 cc or 91.1 cu in) gave 278 bhp (207 kW) at 8,250 rpm with about 2.7 atm (270 kPa) pressure. Halving this would have only produced 139 bhp (104 kW).
Studies by Mercedes showed that 390 bhp (290 kW) at 10,000 rpm could be achieved from 0.75 litres with a supercharger pressure of 4.4 atm (450 kPa), with 100 hp (75 kW) required to drive the supercharger. Fuel consumption of this 290 bhp (220 kW) net engine would have been 2.3 times higher than a naturally aspirated one developing the same power. Since 115 bhp/l (86 kW/l) at 9,000 rpm was being developed by naturally aspirated motorcycle racing engines, it was decided that a 2.5-litre engine was the correct choice. This was a significant change of philosophy, since all previous Mercedes-Benz Grand Prix engines since the 1920s had been supercharged. Mercedes' solution was to adapt direct fuel injection Daimler-Benz engineers had refined on the DB 601 high-performance V12 used on the Messerschmitt Bf 109E fighter.
By its introduction at the 1954 French GP the 2,496.87 cc (152.368 cu in) (76.0×68.8 mm) desmodromic valves straight 8 delivered 257 bhp (192 kW). The W196 was the only F1 car with such advanced fuel technology, giving it a considerable advantage over the other carburetted engines. Variable length inlet tracts were experimented with and four wheel drive considered. An eventual 340 bhp (250 kW) at 10,000 rpm was targeted for the 2.5-litre F1 motor."