Jan 26, 2012

S Range Rover Sport, efficiency and lower consumption



At the already extraordinary 3-liter V6 diesel engine from 255 hp Range Rover Sport, now adds a more efficient version, with even lower fuel consumption and reduced emissions of CO ². The Range Rover Sport S is, in fact, equipped with a 3.0 TDV6 engine with 211 hp, it delivers 155 kW, with reduced CO ² emissions to 224 g / km, thanks to the injection system of "low flow". The new Range Rover Sport  enhances the range of a model of price and features of particular interest. In fact, the list price was set at € 58,483 (turnkey), while its 155 kW of power to place it below the new cut-off of the super-stamp. Obviously the costs are significantly reduced, while maintaining the same standard 255 hp version. The Range Rover Sport S consumes 8.5 l/100 km in combined cycle. Combined with the 8-speed transmission, the new transmission with rotary vane management sequential gearbox mounted on the steering wheel. Complies with Euro 5 is equipped with a particulate filter (DPF) and is known for being one of the engines "cleaner" of the market.

Significant improvements were also made to the systems and Premium Hi-ICE technologies which use the MOST gen 2.1, while the new voice control system "Say What You See" is in the premium satellite navigation system, available on request, and helps the driver to remember the commands as suggesting to the screen and allowing even the use of abbreviated speech codes.

The new version of the 3.0-liter diesel engine delivers 211 hp LR-TDV6 (155 kW) at 4,000 rpm / min. and 520 Nm of torque at 2,000 rpm / min., with CO ² emissions of 224 g / km thanks to the low flow injection system. The 211 hp version is equipped with the system of two parallel sequential turbochargers. The maximum torque is achieved already at 2,000 rpm. In this sense, this engine surpasses its rivals: 500 Nm of torque are, in fact, delivered in 500 ms starting from the minimum, with 83% of maximum torque instantly available.

The 3.0 diesel engine sets new standards of refinement and economy thanks to the third generation common rail operates at a pressure of 2,000 bar piezo injectors and mounts that optimize quieter combustion. The system works in "dosed mode" to the injectors by sending only the necessary amount of fuel, without the excess defer to the tank and the resulting pumping losses. The engine is also equipped with DPF and an advanced EGR system to reduce nitrogen oxides.

The drive requires a turbine exhaust gas pressure, and the resulting pumping losses and increased consumption. To minimize this effect, the secondary turbocharger, when not active, it is completely isolated from the inlet duct and the location of the exhaust gas by means of special valves. A balance between the conducted pipe then sends all the exhaust gas turbocharger for the sole primary medium in size and variable geometry, which remains active for most of the time.

Combined with the 3.0-liter Euro 5 diesel engine, the unique ZF 8HP70 provides unparalleled responsiveness, a renewed driving pleasure while reducing fuel consumption and emissions. For the best efficiency, no more than two clutches inside the exchanges are open at the same time. The 8HP70 transmission has many features aimed at saving energy. The hydraulic system is more efficient because the pump uses less energy from the engine. The converter is rated for a speed block and lower operating temperatures, reducing fuel consumption, thanks to the exceptional torque at low engine speeds 3.0. The transmission control to select the minimum neutral position when the vehicle is stationary with the engine idling and transmission in Drive, thus reducing the load on the engine and reducing consumption. Furthermore, if it is hot 8HP70 select a more down to run as fast as the motor and the pump of the first air conditioner and cool the passenger compartment. If it is cold and the heating time reduces emissions by turning the engine faster.



The transmission also controls the use of the brakes by the driver and the rate of deceleration, inserting the correct value to enter and exit the curve. Not necessarily changing gears in sequence, but can also "jump" up to six gears to respond much faster in passing maneuvers. The paddles on the steering wheel as standard, allowing the driver to intervene manually on gearboxes. The shift lever is replaced by a rotary switch to select modes Park, Reverse, Neutral, Drive, Sport, the latter optimizes the response time of the transmission for maximum acceleration, with an instantaneous response and faster steps speed to higher gears. The selector knob is flush with the console when the engine is off, and rises when it is turned on.

In addition to improvements in terms of efficiency, 8HP70 also offers performance advantages. A gear change is completed in only 200 milliseconds, the relationships change with an imperceptible interruption of torque, to provide a smooth running equal to that of a dual clutch transmission. The 8HP70 anticipates downshifts, giving the motor speed to that of its turbine, so that the transition to a lower ratio occurs in a completely homogeneous. This also contributes to the closer relations stessi.Il Driver Type Detection system monitors vehicle and driver input to optimize the response of the transmission to the driving style of the pilot, when dealing with a series of curves, the Curve keeps Detection engaged in the same gear, avoiding annoying and unnecessary speed changes.

With regard to off-road ability is known that the Land Rover sets the standard that all others will follow. In 2011, were introduced two new features: Hill Start Assist and Gradient Acceleration Control. Hill Start Assist (HSA). To facilitate the departure of steep slopes, the HSA in the brake system maintains pressure necessary to stop the vehicle while the driver moves their foot from the brake and accelerator until the engine reaches the torque required to start, preventing so the vehicle back. The HSA is always available, not selectable, and its intervention is not reported to the driver.

Gradient Acceleration Control (GAC). And 'designed to ensure greater safety on steep slopes if the driver has not set the HDC. Acting on the brakes, the GAC keeps the vehicle at a speed determined by the position of the accelerator pedal if the vehicle is moving in the direction desired by the driver, forward (gear drive), or in reverse. Otherwise (eg if the vehicle falls back, but with the transmission in Drive) GAC limits the speed to 5 km / h for a maximum of 20 seconds, allowing the driver to regain control.

The new Range Rover Sport is full of features aimed at reducing fuel consumption and emissions of CO ². The version 3.0 TDV6 211 (155 kW) is designed to deliver high torque at low engine speeds, with reduced consumption. The parallel sequential turbocharging system of the 3.0-liter diesel uses for most of the time the primary turbo, bigger. If more power is required, the secondary turbo remains dormant, reducing pumping losses and therefore consumption. The system of third-generation common rail injection with piezo injectors and fuel metering, contributes substantially to achieve the same result. The heating systems is faster, thanks to the new cooling system, and this, together with new features reduced friction, improved fuel consumption.

The engine has been optimized to reduce not only consumption but also for achieving high torque at low revs, which makes possible the activation of the direct drive clutch gear at lower speeds. This will reduce the hydraulic torque converter slip and reduces both fuel consumption and emissions of CO ². A high torque at low engine speeds also allows the use of longer relationships, consuming less fuel to travel. The Range Rover Sport S has many more features aimed at saving energy.

With the vehicle stationary idling LR-TDV6 3.0 is only 710 rounds / minute: As a result, fuel economy without impacting minimally refined driving. The Smart Regenerative Charging, also allows the alternator recharges the battery when it is possible to do so in conditions of maximum energy savings. The aerodynamics of the front (thanks to the low spoilers and flaps to the front wheels) helps to reduce drag by directing airflow under the vehicle. The air conditioning pump is driven by a clutch which is disengaged when the system is in operation, reducing parasitic losses, fuel consumption and emissions of CO ². 


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