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Press Release June 7, 2013 No Press Release June 7, 2013 No. 59/13 Efficiency and performance for 50 years: the flat-six engines from Porsche “Engine of the Year Award” for the 2.7-litre flat-six engine Stuttgart. Once again, a flat-six engine from Porsche has been named “Engine of the Year”. This year, the international jury gave the renowned award to the 2.7-litre engine that is used in the Boxster and the Cayman for the 2.5 to 3.0-litre engine displacement class. “A brilliant engine for a brilliant car. This centrepiece of Porsche technology combines performance and a sporty pedigree with impressive fuel efficiency.” This is how Dean Slavnich of “Engine Technology International Magazine” supported the jury’s decision. The British trade magazine has been giving this award for excellent engines for 15 years now. The jury also praised the flexibility and responsiveness, performance and smooth running of the smallest-displacement flat engine from Porsche. The sport engine was derived from the 3.4-litre engine based on the downsizing principle, and together with the PDK transmission (Porsche Doppelkupplung) in the Cayman it offers a power of 275 hp (202 kW) combined with a NEDC fuel consumption of 7.7 l/100 km (180 g/km CO2). Its specific power of 101.6 hp/l means that this six-cylinder engine surpasses the magic limit of 100 hp per litre engine displacement. This is the fourth time that a flat engine from Porsche has won this competition between the best engines in the world. In 2007, Porsche has already won in the category of three to four-litre engines with the engine of the 911 Turbo. In 2008, the Dr. Ing. h.c. F. Porsche Aktiengesellschaft 1 of 6 Public Relations and Press Porscheplatz 1 Technical Communications 70435 Stuttgart Hermann-Josef Stappen Phone +49 (0)711 911 – 25231 Email [email protected] Press Release June 7, 2013 No. 59/13 turbocharged 3.6-litre flat engine with 480 hp even won in the open displacement class. In 2009, the 3.8-litre six-cylinder engine of the 911 Carrera S was named “Best New Engine”. The choice of “Engine of the Year” is made by 87 highly regarded automotive journalists from 35 countries who evaluate the engines in various categories. Along with power, fuel economy, driving properties and comfort, the use of innovative technologies is also assessed. Advantages: compact and light, high-revving and smooth – for 50 years The 50 years of Porsche 911 also represents 50 years of the flat-six engine. Not simply for tradition sake, but because of its advantages: it is very flat, lightweight and compact. The flat engine with six cylinders is very smooth running, and it has neither free moments nor free forces of inertia. In addition, horizontally opposed engines are very well suited to lowering a vehicle’s centre of gravity. The horizontal cylinders enable very low-profile construction. And the lower a vehicle’s centre of gravity, the sportier it can be driven. Another of the most prominent traits of the Porsche flat-six engines is their low fuel consumption in relation to their power. This excellent fuel efficiency is based on the overall concept that is influenced by motorsports. It is based on systematic lightweight design, high-revving and a large specific power as a result of its advantageous charge cycle. These basic traits were crucial in the decision to develop a six cylinder engine with an opposing cylinder layout for the first 911. This resulted in an air-cooled flat-six engine with axial blower and – due to its higher rev reserves and improved smooth running – one overhead camshaft per side. At first, the displacement was specified as two litres, and the engine was designed for potential increases up to 2.7 litres. In those days, no Porsche engine specialist could have predicted that this engine type would be continued in its basic form right up to the year 1998 and would finally reach 3.8 litres of displacement. Dr. Ing. h.c. F. Porsche Aktiengesellschaft 2 of 6 Public Relations and Press Porscheplatz 1 Technical Communications 70435 Stuttgart Hermann-Josef Stappen Phone +49 (0)711 911 – 25231 Email [email protected] Press Release June 7, 2013 No. 59/13 World premiere in 1963 with 130 hp from two litres of displacement At the world premiere of the 911, which was initially known as the 901 at the Frankfurt Motor Show (IAA) in 1963, the flat-six engine produced a power of 130 hp at 6,100/min from its two litres of displacement. The success of the new sports car quickly led to customer wishes for more power. Porsche responded, and the 911 S made its debut in model year 1967 with 160 hp at 6,600/min – the base model was soon designated the 911 L, and later the 911 E. At that time, the engineers were especially proud that despite the added power and a power-to-displacement ratio of 80 hp per litre, there were no compromises in terms of engine life. The 911 not only established itself on the world market based on its efficient performance, but also by its technological progress. In 1968, Porsche offered the sports car with an emissions control system for the USA. A special aspect of this system: Porsche was able to satisfy US emissions regulations – including the especially stringent rules for California – without any compromises in performance and with nearly identical driving comfort. Hazardous emissions were controlled by exhaust gas recirculation in the induction manifold and by thermal reactors. In its development work, Porsche was the first company in Europe to ever install roller dynamometers for emissions testing. In autumn 1968, Porsche introduced mechanical petrol injection with six-piston pump. In addition to increasing displacement, it also added more power and torque. In 1969, the six-cylinder engine first grew to 2.2 litres, then two years later to 2.4 litres. This resulted in 180 hp of power for the 911 S at first and then 190 hp. In 1971, engine compression was reduced so that all 911 cars could be powered by regular petrol worldwide. In close cooperation with Bosch, Porsche developed the K-Jetronic – an improved, continuous fuel injection system, which was first introduced in the US models in 1972. Dr. Ing. h.c. F. Porsche Aktiengesellschaft 3 of 6 Public Relations and Press Porscheplatz 1 Technical Communications 70435 Stuttgart Hermann-Josef Stappen Phone +49 (0)711 911 – 25231 Email [email protected] Press Release June 7, 2013 No. 59/13 In 1974, the 911 Turbo made its debut as the first production sports car with a turbocharger In 1973, all engines in the 911 generation designated as “G models” were converted to engine displacements of 2.7 litres, and operation with unleaded regular petrol was made possible – here Porsche proved once again that sports cars could be eco- friendly. In 1974, a legend made its first appearance: Porsche introduced the 911 Turbo, the first production sports car with a turbocharger. In this car, engineers transferred their extensive experience with turbocharged engines from motorsport into series production. The engine was based on the engine of the 911 Carrera RS 3.0 which produced 260 hp and a torque of 343 Newton metres which took the car to a top speed of over 250 km/h. Advanced development of the six cylinder engine brought displacement and power enhancements over several stages, combined with highly advanced emissions control technology. Porsche built the first flat engines with regulated catalytic converters in 1980. Three years later, a new generation of naturally aspirated engines was presented, which had 3.2 litres of displacement and digital engine electronics. All of the engines were now designed for unleaded regular petrol – in many European countries this fuel was still unavailable, but the engine design offered flexibility. In 1988, Porsche made further improvements to the combustion process and developed a cylinder head with two spark plugs per combustion chamber. The air-cooled flat engine reached its zenith with the naturally aspirated engine of the 993 model series, which produced 300 hp from 3.8 litres of displacement in the top model 911 Carrera RS in 1995. There was a limited edition series of the 911 GT2, a car derived from motorsport, whose 3.6-litre engine first developed 430 hp with the help of two turbochargers and then 450 hp in model year 1998. The 911 Turbo also adopted the biturbo concept, and another global innovation was the OBD II emissions control monitoring system. The now 408 hp engine was still based on the naturally aspirated 3.6-litre engine, but it had been modified so extensively that it was considered an independent design. Dr. Ing. h.c. F. Porsche Aktiengesellschaft 4 of 6 Public Relations and Press Porscheplatz 1 Technical Communications 70435 Stuttgart Hermann-Josef Stappen Phone +49 (0)711 911 – 25231 Email [email protected] Press Release June 7, 2013 No. 59/13 In 1996, the first water-cooled flat-six engine from Porsche celebrated its world premiere The engine of the new Boxster model series represented a quantum leap in the development history of the flat-six engines from Porsche at its world premiere in 1996. For the first time, Porsche implemented a water-cooled engine that had 2.5 litres of displacement and 204 hp of power. Freed of the restrictions of the previous six cylinder engine with air cooling, engine developers gave the new engine a cylinder head with two camshafts and four valves per cylinder.
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