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The Porsche Boxster


Performance:
Both Boxster models are equipped with brand engine developments. The Boxster has a larger capacity, performance-enhanced, water-cooled six-cylinder Boxer engine that is free revving, with optimum load change and extremely smooth running. With a perfectly matched interplay of all engine components, the Boxster now develops 188 kW (255 hp).

VarioCam Plus in conjunction with the optimised intake manifold ensures high torque even at low speeds, and excellent power development in the upper rev range. Maximum torque is available over a wide rev range, reaching 290 Nm between 4,400 and 6,000 rpm.

The engine in the Boxster S features direct fuel injection (DFI). This means even more power: the 3.4-litre power plant develops 228 kW (310 hp) at a maximum torque of 360 Nm between 4,400 and 5,500 rpm.

Porsche Doppelkupplung
The optional Porsche Doppelkupplung (PDK), with both manual gearshift and an automatic mode, enables smooth gear changes with no interruption in the flow of power. This results in significantly faster acceleration and lower fuel consumption, without having to sacrifice the ease of automatic transmission.

In total, PDK has seven gears at its disposal. Gears 1 to 6 have a sports ratio and top speed is reached in 6th gear. The 7th gear has a long ratio and helps to reduce fuel consumption even further.

PDK is essentially two half gearboxes in one and thus requires two clutches ? designed as a double wet clutch transmission.

This double clutch provides an alternating, non-positive connection between the two half gearboxes and the engine by means of two separate input shafts (input shaft 1 is nested inside the hollowed- out input shaft 2).

The flow of power from the engine is only ever transmitted through one half gearbox and one clutch at a time, while the next gear is preselected in the second half gearbox. During a gear change, therefore, a conventional shift no longer takes place. Instead, one clutch simply opens and the other closes at the same time. Gear changes can therefore take place within milliseconds.

Clutch 1 controls the first half gearbox, which contains the odd gears (1, 3, 5, 7) and reverse. Clutch 2 controls the second, which contains the even gears (2, 4, 6).

Porsche Doppelkupplung (PDK) in detail
The crankshaft transmits engine torque to the dual-mass flywheel which is then channelled through the clutch housing and onto the multi-plate clutches, or to be more precise, the outer disc carrier.

Under oil pressure, clutch 1 closes and forms a frictional connection with input shaft 1. The torque is now transmitted through the first half gearbox ? and then the differential ? to the rear axle. At this stage, PDK has already preselected the next gear in the second half gearbox. Engine torque is already acting on the other outer disc carrier and, in response to a gear change signal, the overlap shift is initiated, i.e. as clutch 1 opens, clutch 2 closes. The non-positive connection with input shaft 2 is established, and power is transmitted to the wheels. The gear which is engaged is displayed on the instrument cluster. Depending on the gearshift program, the gear change is optimized for comfort or for sporty handling and takes place in a matter of milliseconds.

The advantage over a fully manual transmission is the considerably faster rate of acceleration for the same rate of fuel consumption. The advantage over a fully automatic transmission is the perceptible increase in driving dynamics ? with a similar level of comfort, and a distinct reduction in fuel consumption.

The compact dimensions of the gearbox reduce rotational masses which means a more direct engine response, and the system is more lightweight.

This, along with the long-ratio 7th gear, helps to achieve reduced fuel consumption and emission figures comparable with those of a manual gearbox.

With the optional Sport Chrono Package, PDK is enhanced by the 'Launch Control' and 'motorsport-derived gearshift strategy' functions.

In essence, PDK combines sportiness with efficiency and comfort. What does all this mean for you? Uninterrupted driving pleasure.

Sport steering wheel
In conjunction with the optional Porsche Doppelkupplung (PDK), the standard sport steering wheel features two ergonomic switches. One press with the thumb and the PDK shifts up. One pull with the index finger and the PDK shifts down. Either the right or left hand can be used.

When combined with the optional Sport Chrono Packages, an additional display is located above the airbag module telling you whether the SPORT, SPORT PLUS and Launch Control functions are activated.

Sport Design steering wheel
Visually, the steering wheel is distinguished by its distinctive, high-quality twin-spoke design and silver-colored galvanized spoke cover. The airbag module is finished in the same color as the steering wheel rim.

This optional steering wheel allows you to make motorsportstyle gear changes. In conjunction with the optional PDK, the Sport Design steering wheel features two alloy shift paddles ergonomically located behind the steering wheel spokes. Pull the right-hand paddle and the PDK shifts up. Pull the left-hand paddle and the PDK shifts down.

Displays in the left and right-hand steering wheel spokes tell you whether the SPORT, SPORT PLUS and Launch Control functions of the optional Sport Chrono Package are activated. Another feature reminiscent of the world of motorsport is the top center marking on the steering wheel rim.

Gear selector for PDK
The gear selector for PDK is ergonomic and designed for high functionality, enabling you to change gears manually. The control concept mirrors the logic of the paddles on the sport steering wheel for PDK?press forward to shift up, pull backward to shift down.

Even if the gear selector is set to automatic mode, you can still change gears manually using the paddles on the steering wheel.


Dynamic Cornering Lights:
New dynamic cornering lights offer particularly effective illumination of the road ahead, particularly through bends. Sensors continuously monitor the speed, lateral acceleration and steering lock and, from these variables, calculate the course of the bend. This determines the angle of the dynamic cornering lights, with the lights able to swivel into the corners up to a limit of 15 degrees, even with main beam switched on.

Manual Gearbox:
Fitted as standard is a six-speed manual gearbox which is perfectly matched to the characteristics of the engine. The shift throw is short and precise, the tuning is sporty ? as befits the character of the Boxster models. The dual-mass flywheel minimizes engine noise and the control cable mechanism prevents vibrations from being transmitted to the gear lever.


Wheels and TPM:
A new range of wheels ensures improved driving performance and comfort on both models. The new Boxster is fitted with 17-inch wheels in a new open five-spoke design, and the new Boxster S has new 18-inch wheels with a dynamic performance look. Wheels up to 19 inches are available for both models on request. All available wheels are equipped with anti-theft protection.

Specifically for the cold season, winter tires and snow chains are available from the Porsche Tequipment accessory program.

Tire Pressure Monitoring (TPM)
The latest optional Tire Pressure Monitoring (TPM), sends warnings to the on-board computer's display screen in the event of low tire pressure.

The driver can check the pressure in all four tires via the instrument cluster. The system now updates even faster, whenever the tire pressures are corrected or a wheel is changed ? for increased comfort and safety.

Content provided by: http://www.porsche.com/usa/models/boxster/boxster/detail/


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