BMW 12-cylinder engines turn 25

Posted on Monday, 29 October 2012 , 14:10:22 byIulia

Filed under bmwgermaneuropean12-cylindertechnologyBMWEuropeanGermanTechnology

BMW 12-cylinder engines turn 25


Not long ago, Bavarian carmaker BMW announced us that it has been 25 years since they have developed the V12 engines. Back in 1987 BMW offered the technical specifications of their new V12 engine capable of powering the 750i. A month later, their new achievement was revealed to the public at the Geneva Motor Show. The specialists received an unexpected reaction from the public. Before its official debut, the carmaker had more than 3.000 pre-orders and then they knew the V12 was not just a simple idea, but a real gold mine. The engine had an angle of 60 degrees between its two 6-cylinder banks. It was capable of developing 300 horsepower and 450 Nm of torque. The unit featured two separate electronic management systems and weighted only 240 kg. The engineers have also provided MSR stability programs and the auto transmission controller. In 1974, BMW specialists have developed the M33, a model powered by a 5.0-liter petrol V12 engine capable of generating 300 horsepower. Next, in 1977, the Bavarians have created the M66 which was 40 kg lighter and was powered by 3.6-liter and 4.5-liter engines. In 1994, BMW came up with the M73 internal designation and its increase in displacement by 0.4 liters brought an output of 326 horsepower. Because of the technological improvements the model was also capable of using less fuel. This unit also featured 4 valves per cylinder, an active suspension with electronic damper control, and the Valvetronic variable timing system. To send the output to the wheels, the engineers have offered a 6-speed automatic gearbox. Nowadays, the 760i and the 760iL receive power from a V12 as well. The output reaches 544 horsepower which are being transferred to the wheels through an 8-speed automatic gearbox. This was just a small part of the BMW history and for sure the Bavarians will continue to impress us with their achievements in the future as well.