Powerful and efficient: The engines of the Panamera Sport Turismo
Powertrain in detail
The three-litre V6 petrol engine of the Panamera 4 Sport Turismo produces power of 243 kW (330 hp) between 5,400 and 6,400 rpm. Its maximum torque of 450 Nm is already available at 1,340 rpm and remains constant at this level up to 4,900 rpm. While Porsche employs biturbo systems for the V-engines of the Turbo, 4 E-Hybrid, 4S and 4S Diesel, the extra thrust in the new 330 hp V6 engine is delivered by a single turbocharger. As in the case of the 404 kW (550 hp) Turbo, however, this turbocharger is of the twin-scroll variety which, among other things, maximises the responsiveness of the engine. The twin-scroll option was also chosen with an eye on the efficiency of the 2995 cm3 engine. In the combined New European Driving Cycle (NEDC), the Panamera 4 Sport Turismo consumes 7.9 to 7.8 l/100 km.
The Panamera 4 E-Hybrid Sport Turismo uses two powertrains: a V6 petrol engine and an electric motor. The V6 engine produces its maximum performance of 243 kW (330 hp) between engine speeds of 5,250 to 6,500 rpm. Although the power is identical to that of the V6 in the Panamera 4 Sport Turismo, the engine construction is not identical. The V6 of the 4 E-Hybrid uses twin turbocharging and has a displacement of 2,894 cm3. The system produces its maximum torque of 450 Nm between 1,750 and 5,000 rpm. The electric motor contributes a maximum power of 100 kW (136 hp) and 400 Nm maximum torque. When both powertrains are working together (in “Hybrid Auto” mode), this produces a maximum system output of 340 kW (462 hp) at 6,000 rpm. The system produces its maximum torque of 700 Nm between 1,000 and 4,500 rpm. Combined fuel consumption in the New European Driving Cycle (NEDC) for plug-in hybrid models is 2.5 l/100 km and 15.9 kWh/100 km.
The plug-in hybrid Porsche always starts in electric-only mode, which is virtually silent. The Panamera 4 E-Hybrid Sport Turismo can be used as a local emission-free vehicle (in “E-Power” mode) up to a range of 51 kilometres and up to a speed of 140 km/h. The electrical energy is also used to increase acceleration and the top speed. The high-voltage battery of the Sport Turismo takes under six hours to reach a full charge using a 230 volt, 10 amp connection. If the Panamera uses the optional 7.2-kW on-board charger and a 230-V, 32-A connection instead of the standard 3.6-kW charger, the battery is fully charged in just 2.4 hours.
The Panamera 4S Sport Turismo is powered by a V6 biturbo engine with a displacement of 2,894 cm3. The six-cylinder engine produces its maximum performance of 324 kW (440 hp) between 5,650 and 6,600 rpm. The 4S produces a consistently powerful 550 Nm of torque through a broad engine speed range of 1,750 to 5,500 rpm. This results in an impressive torque plateau. The combined fuel consumption in the NEDC is 8.3 to 8.2 l/100 km.
The Panamera Turbo Sport Turismo features a V8 petrol engine. Its four-litre biturbo engine has a displacement of 3,996 cm3 producing peak performance of 404 kW (550 hp) between 5,750 and 6,000 rpm. The maximum torque of 770 Nm is achieved between 1,960 and 4,500 rpm. The high power reserves are matched by pure efficiency: The combined consumption of the Panamera Turbo Sport Turismo is 9.5 to 9.4 l/100 km. The most striking technical feature of the V8 biturbo direct fuel injection engine is again the central turbo layout. In this case, the design includes complex twin-scroll turbochargers. The two counter-rotating turbines provide maximum torque values even at the lowest speeds. One particular design highlight and unique selling point of the V8 is the adaptive cylinder control. At partial load ranges, the system temporarily and imperceptibly turns the eight-cylinder engine into a four-cylinder engine. The result is up to 30% less fuel consumption in the four-cylinder phases depending on the power requirements. The activation and de-activation of the cylinders is controlled by the VarioCam Plus with a two-stage valve lift system. To enable this, the valve drive on the cylinders two, three, five, and eight is switched on or off as required. The cylinder shut-off is activated in a speed range of 950 to 3,500 rpm and up to a torque threshold of 250 Nm.
The most powerful diesel so far produced by Porsche for a production model, the Panamera 4S Diesel Sport Turismo, produces 310 kW (422 hp) between 3,500 and 5,000 rpm. The maximum torque of 850 Nm is available throughout a speed range of 1,000 to 3,250 rpm. The V8 engine produces its high power and exceptionally powerful torque from a displacement of 3,956 cm3. The high-pressure direct fuel injection uses a common rail system with a maximum pressure of 2,500 bar. The turbo diesel has a combined consumption of 6.8 to 6.7 l/100 km.
The 4S Diesel also employs twin turbochargers in a central turbo layout. Unlike the petrol engine, the common rail engine is equipped with sequential charging, which allows the eight-cylinder engine to be driven either as a single turbo or biturbo depending on the operating load. At low and medium engine speeds, the entire exhaust gas flow is fed through just one of the two turbochargers, which improves the responsiveness of the engine. Even with only one turbocharger, the V8 diesel achieves its full torque at just 1,000 rpm. The second turbocharger only becomes active at higher engine speeds in order to realise the full power potential. Both turbochargers have variable turbine geometry (VTG).
Standard Porsche eight-speed PDK
All second-generation Panameras, and therefore the Sport Turismo models, have the Porsche Doppelkupplung (PDK) with eight forward gears. The eight-speed PDK enables a very large spread of the gear ratios with maximum comfort and agility, thus further reducing fuel consumption since the seventh and eighth gears are designed as overdrive stages that reduce the engine speed. Every Panamera therefore achieves its top speed in sixth gear. As with all double-clutch transmissions, the eight-speed PDK shifts gears without any traction loss since the next gear shift is already waiting in “standby” mode to be selected in just fractions of a second.
Active all-wheel drive with electronically controlled multi-plate clutch
All Panamera Sport Turismo models deliver their power to the road through Porsche Traction Management (PTM) as standard: an active all-wheel drive system with electronically controlled and map-controlled multi-plate clutch. Tuned to the respective driving situation, the multi-plate clutch optimally distributes the engine force across the front and rear axles. To enable this, the PTM sensors permanently monitor the wheel rotations, the longitudinal and lateral acceleration of the vehicle, and the steering angle. The PTM optimises performance both on dry roads as well as wet roads and snow.