The Porsche Fuhrmann Engine (Type 547) was named after its inventor Ernst Fuhrmann, and built from 1953 to 1964. The Type 547, also called “drawer engine”, is an air-cooled four-cylinder boxer engine with four overhead camshafts that are powered by four vertical shafts. The crankcase, cylinder and cylinder heads of the engine are made of aluminum alloy. The special feature of this engine is its small size and low weight, which is achieved by the materials used and the clever construction.
Various filter systems are performing many different functions in cars. In addition to the air filter and the oil filter, there are other filter systems such as fuel filters and cabin filters.
Fuel can contain various impurities which, among other things, reach the tank during filling. These are often, for example, pieces of paint or dirt. But also rust, which can be formed by the moisture in the steel tanks, can get into the fuel. Internal combustion engines require fuel filters that clean the fuel before it enters the combustion chamber. This is important because otherwise dirt particles and other substances would significantly increase engine wear. Furthermore, unfiltered fuel can mess up the gas mixture preparation and clog the small nozzles.
If the engine oil is not adequately filtered, foreign matter and dirt in the oil can be hazardous to the engine. In this case, unclean oil can lead to heavy wear on the pistons, liners and bearings, which can directly affect the performance of the vehicle. With qualitative oil filters and regular oil changes these things can be avoided.
For the combustion process, combustion engines require a lot of oxygen, which is absorbed from the environment. The air filters clean this air, thereby enabling a smooth burning process. Dirt particles are trapped either by inertia, diffusion, electrostatic or sieving before they can get to the engine.
A cabin filter ensures that the air that enters the interior of the vehicle through the ventilation and the air conditioning system is cleaned. Dust, pollen and other particles are filtered out, which is particularly beneficial for people with allergies. The filters must be able to fulfill their task even under extreme weather and environmental conditions, thus enabling a comfortable driving experience. In case of excessive use of the vehicle in places with bad air conditions, such as the heavy traffic of the city center, it is advisable to change the cabin filter from time to time.
The 3.0-liter M TwinPower Turbo inline six-cylinder engine in the BMW M2 Coupé – in addition to its long name – stands out for its efficiency. The special features of the unit include an oil system with return pump, which ensures the correct oil supply even at extreme longitudinal and lateral accelerations.
With an output of 370 hp (272 kW) and a torque of 500 Nm with overboost, it accelerates the 1,570 kilogram BMW M2 Coupé between 1,400 and 5,560 rpm in around 4.3 seconds to 100km/h. The fully variable valve control with High Precision Injection and a TwinScroll turbocharger ensure optimum filling of the six cylinders.
The fuel consumption is combined at 8.5 liters per 100 km with a CO2 emission of 199 g/km.