Meet the engineer 2014 jeep

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meet the engineer 2014 jeep

Mike Manley is an engineer by training and a true car guy. pick-ups and vans under the Chrysler badge after it and Fiat had merged in DETROIT — The Jeep Grand Cherokee EcoDiesel was the featured vehicle at this month's meeting of the SAE Detroit Section, which was of Vehicle Engineering, was the first speaker and announced that Jeep can't. The Compass and Patriot were the first Jeep Brand vehicles to reach into the small The Liberty infused bold engineering advances like an independent front .. in and replaced in the lineup by the All-New Jeep® Cherokee.

Wireless headphones are included along with a wireless remote control. Connectivity and touchscreens involve rapidly changing technology and ever-increasing consumer expectations - both of which have a significant impact on owners' overall quality assessment of new vehicles.

The Uconnect team constantly evaluates consumer feedback, placing a high priority on designing systems that are intuitive for both tech-savvy customers as well as tech-averse drivers who prefer conventional buttons to adjust the climate or radio station.

Harman Kardon Surround Sound Audiophiles will be able to enjoy the sophisticated Harman Kardon system that surrounds Jeep Grand Cherokee occupants in high-definition sound. The system delivers maximum audio performance, innovative technology and engineering excellence.

State-of-the-art, it has 19 high-performance, high-efficiency GreenEdge loudspeakers in a 7. There's a high voltage class D amplifier with Tracking Power Supply TPS and 11 channels of amplification with Logic 7 multichannel surround-sound technology. This has set a new standard for acoustic precision and authenticity, contributing to a completely new surround-sound experience in automobiles. Originally developed over the course of many years for professional recording studios, Logic 7 processing was the first choice for discerning music lovers in their homes before it became available for cars.

The systems utilise unique amplifier and speaker technologies delivering substantial increases in component and system efficiency levels. GreenEdge amplifiers are more efficient than traditional amplifiers by up to 55 per cent - representing a net efficiency of more than 90 per cent in many cases. The acoustic transparency and dynamic response have been significantly improved at the same time in comparison with conventional systems.

The compact high efficiency transducers make an important contribution to energy savings, requiring less input power. The high-efficiency speaker designs ensure higher SPL with a dramatic increase in dynamic sound quality.

The speakers are tuned for maximum efficiency and perfectly matched to the amplifier output stage. This match enables the speakers to deliver outstanding acoustic transparency and dynamism. Use of innovative, lightweight materials such as Aramid fibre and an array of highly efficient design solutions also ensures optimised low mass products.

The Jeep Grand Cherokee is powered by the efficient 3. The V6 unit features direct injection and common rail along with MultiJet 2 technology. The other engine in the line-up is the awesome 6. Both engines are paired with an all-new eight-speed automatic transmission. This engine produces its maximum power of bhp at rpm while torque is a hefty Nm at rpm.

2014 Jeep Grand Cherokee EcoDiesel debuts at SAE Detroit Section meeting

The powertrain is also offered in a low output version which delivers bhp at rpm while torque stands at a very respectable Nm between and rpm. These improvements, along with a dramatic reduction in noise levels, have been made possible by Fiat Powertrain Technology's ground-breaking MultiJet 2 technology. This employs a special balanced solenoid valve which permits up to eight injections per cycle.

It also manages two main injections in a single modular profile called Digital Injection Rate Shaping. Compact and lightweight, this engine features an bar common-rail fuel-injection system, compressed graphite iron, degree block with aluminium cylinder heads and a two-piece structural aluminium oil pan. Cylinder heads are constructed of aluminium and feature a chain-driven, dual overhead-camshaft design with four valves per cylinder.

For this engine, cast-iron exhaust manifolds are used. Additional emissions controls include a close-coupled diesel oxidation catalyst and standard diesel particulate filter. Towing capability is up to kg for all models apart from the Summit which can pull up to kg.

This engine is fitted with Fuel Saver Technology which optimises economy and emissions by putting the engine into four-cylinder mode when less power is needed.

When all eight cylinders are called upon the engine delivers a healthy bhp at rpm with torque of Nm at rpm. Proving its capabilities as a sportscar, powerful brakes will bring it from 62mph to a standstill in 35m. The engine also complies with Euro 6 emissions standards. This fully electronic gearbox helps to reduce consumption and emissions while delivering faster acceleration allied with precise, smooth gear changes.

In automatic mode, it alters how it changes gear on the move and has manual shifting capability using steering wheel paddles. This new transmission has 40 shift maps which automatically adapt to specific driving conditions to optimise the quality of gear changes. Intelligent software takes into account variables such as acceleration, engine torque, gradients, kick-down events and travelling speed to determine the appropriate shift map.

The result is automatic shifting ideally tuned to the performance requirements of almost any style of driving while maximising fuel economy. The transmission's efficiency and its spread of ratios yield the best possible fuel economy by operating at lower engine revs in both urban and open-road situations. The addition of more gear ratios helps bridge the gap between gears for smoother up and downshifts. Internally, the transmission has four gear sets and five shift elements multi-disc clutches and brakes.

Only two shift elements are open at any time. With fewer open shift elements, friction losses due to multiple parts rotating relative to one another are reduced, improving fuel efficiency.

This mimics a professional driver's inputs by bringing engine, transmission, driveline, stability control and suspension in line for a textbook launch. It is controlled by a button behind the new T-handle gear lever on the centre console and delivers improved and more consistent straight-line acceleration. The sportscar-like performance of the Grand Cherokee SRT is further accentuated by a change in the dynamic controls for the Selec-Trac system when the vehicle is in Track Mode.

When this is selected, 70 per cent of the engine's torque is delivered to the rear wheels for a more pronounced sporty rear-wheel-drive experience.

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Grand Cherokee SRT drivers will notice a vehicle that is more responsive from mid-corner to exit. Drive and Sport shifting can be selected via the gear lever with no effect on the chosen suspension, stability control and driveline torque split settings. This optimises the Grand Cherokee's transmission shift schedule as well as throttle sensitivity to minimise fuel consumption. It also activates the Quadra-Lift air suspension system, where fitted, to lower the body, further enhancing the vehicle's aerodynamics, for optimum fuel efficiency.

Eco Mode is automatically engaged when the vehicle starts up. A button on the centre console allows drivers to disengage it for livelier performance. This ensures that it maintains the ability to cope with some of the most inhospitable terrain in the world to retain Jeep's legendary trail-rated status. The result is a high performance vehicle that's as versatile and comfortable on-road as it is off.

meet the engineer 2014 jeep

It features a two-speed transfer case that implements the Brake Traction Control System BTCS on the front and rear axle for best-in-class off-road performance. Its two-speed transfer case uses the inputs coming from a variety of sensors in order to determine tyre slip at the earliest possible moment and take remedial action.

The system also uses Throttle Anticipate to sense quick movement in the throttle from a stop and maximises traction before slippage occurs.

When wheel slip is detected, as much as per cent of the available torque is instantly sent to the axle with the most traction. The system operates in two ranges: Use the centre console-mounted switch to engage 4WD Low and the system splits the torque with a ratio between the front and rear axles.

The core of the system is the central transfer case and an electronically controlled clutch pack for active torque distribution. In dry, on-road conditions, the central transfer case sends 48 per cent of the available torque to the front axle and 52 per cent to the rear. On slippery surfaces, the system automatically redirects engine torque between the front and rear axles based upon real-time driving conditions, for maximum traction and response.

The system uses electronic controls to detect loss of grip after sudden acceleration. In some cases, the vehicle will even anticipate low traction and adjust in order to limit or eliminate wheel spin before it happens. This 4x4 system employs inputs from a variety of sensors to determine and prevent wheel spin. The system uses Throttle Anticipate to sense quick movement in the throttle from standstill and maximises traction before any wheel spin.

When tyre slip is detected the system can transfer up to per cent of available torque to the rear wheel with better grip. The transfer case enhances handling by proportioning torque between the front and rear axles to maintain the driver's intended path.

The ELSD helps eliminate rear-wheel spin and distributes torque to the wheel with grip, thereby improving the vehicle's handling.

Quadra-Lift air suspension In order to deliver excellent dynamic performance both on and off-road, an array of sophisticated systems are employed. This features air springs on each corner to maximise ride comfort and permits the driver to adjust the vehicle's ride height manually by up to 10cm using controls on the centre console.

The five levels of adjustment include Normal Ride Height NRHthe standard position with ground clearance of 22cm for improved fuel efficiency and maximum comfort during on-road driving. Off-Road 1 raises ground clearance to Off-road 2 gives the highest ground clearance of 28cm.

Park Mode lowers the vehicle by 4cm from NRH to make loading easier. Aero Mode lowers the vehicle by 1. This function is controlled by vehicle speed and perfectly adjusts the aerodynamics for optimal performance. This doubles as Eco Mode because of the beneficial effect it has on fuel economy. Selec-Terrain traction control system The Jeep Grand Cherokee features a refined version of the class-leading Selec-Terrain traction control as standard on all models apart from the SRT.

This sophisticated system allows the driver to choose the best driving mode for the prevailing conditions from five different programmes. Selec-Terrain co-ordinates and optimises up to 12 on-board systems including the drivetrain control module, electronic brake controller, electronic stability control ESCtransmission controller, powertrain controller, Hill-Ascent and Hill-Descent Control and the new Selec-Speed Control.

Modes include Sand where traction control and Quadra-Lift operate to prevent tyre slip while torque is tuned for optimal performance. In Mud, traction control and Quadra-Lift prevent wheel spin while torque is tuned for optimal performance in mud. Set on Auto, the system automatically adapts to any on- or off-road situation while in the Rock setting, the Quadra-Lift suspension when fitted reaches the maximum height of 28cm. In this mode, the transfer case, differentials and accelerator coordinate to provide maximum low-speed control.

Further versatility is added with the new Selec-Speed Control. This allows the driver to control the speed of the vehicle, both up and down hill, using the steering wheel paddles instead of the accelerator or brake pedals.

The Jeep Grand Cherokee's Sport Mode, which was on the model's Selec-Terrain controller, is now engaged via the gear lever to make the driving experience more fun. It manages this by interacting with several different systems stability control, active damping, transmission shift strategy, transfer case torque proportioning, Electronic Limited-Slip Differential performance, throttle control and cylinder de-activation. Drivers can manually choose between the following dynamic modes: Auto, Sport, Tow, Track, and Snow - for specific performance attributes.

On SRT models, software improvements to Selec-Trac further distinguish the five dynamic modes, enabling drivers to choose a vehicle setting that more ideally meets their requirements and ambient conditions. Drivers will find the torque split change in Track Mode provides a vehicle that is more responsive from mid-corner to exit and one that delivers faster lap times around a track. Improved on-road It doesn't matter which version of the Jeep Grand Cherokee buyers choose, they'll find a vehicle that's been designed from the ground up to have outstanding on-road dynamics.

As an example, each body shell features welds for increased rigidity. The independent front and rear suspension feature isolated front and rear cradles with variable-rate rear springs to deliver improved on-road handling and comfort while complementing the vehicle's legendary off-road capability. The rear suspension's packaging also allows the spare tyre to be stored inside the vehicle rather than underneath it. The rear suspension is a multi-link design with coil spring, Bilstein ADS, aluminium lower control arm, independent upper links tension and camberplus a separate toe link, and a stabiliser bar.

It features a host of cutting edge technology aimed at reducing the likelihood of a crash and limiting the consequences should one occur. Preventative safety The safest thing is to avoid having a crash in the first place and the Jeep Grand Cherokee has a suite of electronic devices aimed at compensating for any mistakes the driver might make. The upgraded Forward Collision Warning FCW with Crash Mitigation uses radar sensors to check whether the vehicle is approaching the car in front too rapidly.

If necessary it sends a signal to the driver to intervene in order to avoid a collision. If the driver doesn't immediately take the corrective action necessary to prevent a collision this updated version of FCW brakes automatically and holds brake pressure for 1.

If the driver is not braking enough, Advanced Brake Assist ABA cooperates with the system, to increase the braking and avoid or mitigate the impact.

The ABA only operates when the driver's foot is on the brake. It is cancelled if the foot is removed from the brake pedal. It employs radar to decrease the vehicle's pre-set cruise-control speed when closing in on another vehicle in the same lane, or when another vehicle pulls into the same lane. The ACC will accelerate to the pre-set speed when the vehicle in front speeds up or moves into another lane.

The system will also maintain a driver-adjustable distance between the vehicle and the one in front and is particularly useful when driving in adverse weather or in situations of reduced visibility.

By year's end, ACC will be enhanced with the Stop functionality thatbrings the vehicle to a stop without the intervention of the driver. This uses ultra broadband radar sensors to search for vehicles that might be briefly concealed from the driver's view. Icons illuminate in the mirror and an acoustic warning signal sounds if there is a car in the blind spot. Enabled when reverse gear is engaged, it informs the driver via icons in the mirror and an acoustic signal if traffic is approaching as they reverse out of parking spaces.

ParkView is standard on all models apart from Laredo. This is a reversing camera that gives a wide-angle view of the area immediately behind the vehicle. It features dynamic grid lines that follow the steering movements and move accordingly in order to aid the driver when manoeuvring into parking spaces or narrow areas. The image is displayed on the Uconnect navigation screen when reverse gear is selected. All models come with Tyre Pressure Monitoring. The employs sensor modules in the valve stems of each wheel to send information about individual wheels' tyre pressure to the in-car computer.

This operates with the Hill-Ascent Control and the Hill-Descent Control functions to allow the driver to control the speed of the vehicle, both uphill and downhill, using the steering wheel paddle shifters instead of the accelerator or brake pedals. All models of the Jeep Grand Cherokee come with powerful disc brakes all round designed to provide fade-free stopping.

This detects and prevents wheels locking in extreme braking conditions or on slippery surfaces. It comes with off-road calibration so it activates with a slightly different pressure control if the surface is loose or rough.

It can tell if the car deviates from its intended path and if it does, the ESC computer steps in to brake selected wheels. As part of this, Ready Alert Braking can predict if the driver is starting emergency braking and uses the ESC pump to move the brake pads closer to the rotors and reduce the time for the brakes to be applied.

meet the engineer 2014 jeep

The Brake Traction Control System BTCS employs the brakes and engine torque to limit how fast the driven wheels can spin relative to the actual speed of the vehicle. It ensures that in the kind of extreme conditions drivers might encounter off-road, the Grand Cherokee will always find a way to keep going safely. Passive safety Inside the Jeep Grand Cherokee there are seven airbags, including the latest multi-stage airbags for the front seats that open with more or less force depending on the seriousness of the impact.

In the roof lining above the side windows there are curtain airbags for occupants in the front and rear seats. Each has its own impact sensor for independent activation on the impact side. Side bags for the front seat occupants are mounted in the external edge of the seats. These have their own impact sensors for independent activation and are designed to reduce the injury to the pelvis and chest in side impacts. The driver has an airbag mounted beneath the instrument panel that's designed to deploy when the driver's side airbag goes off.

This ensures the driver's legs are in the best possible position to minimise injuries in a frontal collision. The latest Grand Cherokee is fitted with active head restraints. In a rear impact these move forwards to reduce whiplash injuries by decreasing the distance to the occupant's head.

Grand Cherokee open-air options The Jeep Grand Cherokee features the CommandView dual-pane power sunroof that extends from the windshield to the rear of the vehicle, allowing for perfect views both on- and off-road. CommandView comprises two glass panels with the front panel opening rearward providing a glass surface that is twice the area offered by any traditional roof. The fixed rear panel allows light and open viewing for second-row passengers. The system comes standard with a power sun visor.

Interiors The new Jeep Grand Cherokee interiors are enhanced thanks to the use of high quality materials and model-specific colour combinations. The revised centre stack features a new UConnect 8.

Controls for radio and climate are found below the screen and have knobs and buttons which are easy to identify and use. The centre console reveals a new leather-wrapped electronic shifter for the eight-speed transmission. Another new feature of the Jeep Grand Cherokee is the new three-spoke leather-wrapped steering wheel featuring sections of fine wood on Overland models.

Optimised in terms of driving position, it features buttons for managing radio, cruise control, telephone and voice commands in complete safety. All trim levels come with paddle gear shifters mounted on the back of the steering wheel as standard. Each Grand Cherokee model has its own unique style of luxury and ambiance based on specific materials and colour patterns.

Available on the entire model line up, the Morocco interiors feature Black monotone seats, instrument panel, consoles and door panels. A Black walnut wood trim finish adorns the dash and doors of the Limited model. Nador Brown Walnut interior wood trim finish adorns the instrument panel and door panels and eases the contrast between the two-tone upper and lower interior.

The aluminium door handle and dash vent bezels, like the trim on the centre console, feature a slight gold hue. Heated, leather seating is standard on Limited. Standard equipment of the Overland model includes a contrasting stitched-leather instrument panel and seats.

Open-pore wood is one of the prominent design cues found on the dash and doors of Grand Cherokee Overland models, and adds a distinct touch of modern luxury. Wood trim is also found on the top portion of the leather-wrapped steering wheel. Besides the Morocco interior, the Overland model offers Vesuvio and Nepal interiors featuring two all-new colour schemes: Jeep Brown and Indigo Blue — inspired by the blue-hued dark grey walls of Mount Vesuvius — for the former; Jeep Brown and Light Frost for the latter — paying tribute to the geographic diversity found in the Asian country of Nepal.

Open-pore brown Zebrano or Black wood is found on the instrument panel and door panels of both interior choices. An all-new Launch Control button is situated behind the new T-handle shifter on the centre console: Engineering 4x4 systems The new Jeep Grand Cherokee features a choice of 4x4 systems: The standard Quadra-Lift air suspension system allows the ride height of the Grand Cherokee to change up to a maximum ground clearance of mm.

Thanks to the availability of these systems, the Grand Cherokee delivers legendary Jeep capabilities and the safety of the four-wheel drive when travelling on poor grip on-road surfaces. Quadra-Trac II full-time four-wheel drive system features a two-speed transfer case that implements BTCS Brake Traction Control System on the front and rear axle for best-in-class off-road performance.

Its two-speed transfer case uses the inputs coming from a variety of sensors in order to determine tyre slip at the earliest possible moment and takes the corrective action. The system also uses Throttle Anticipate to sense quick movement in the throttle from a stop and maximizes traction before slippage occurs.

The system operates in two ranges: The core of the system is the central transfer case and an electronically controlled clutch pack for active torque distribution. On slippery surfaces, the system automatically redirects engine torque between the front and rear axles based upon real-time driving conditions, providing the vehicle with responsive tractive performance.

The system also uses electronic controls that multiply traction on the four wheels and avoids losses of grip in case of sudden acceleration. The 4WD Low has a 2.

In some cases, the vehicle will anticipate low traction and adjust in order to proactively limit or completely eliminate slip. This 4x4 system uses input from a variety of sensors in order to determine tyre slip and take the corrective action.

The system uses Throttle Anticipate to sense quick movement in the throttle from a stop and maximizes traction before slippage occurs. Quadra-Lift air suspension Enhanced on-road dynamics and benchmark off-road capability deliver to the driver optimum ride performances both when driving on the road as well as when mastering off-road trails.

Both Jeep Grand Cherokee Limited and Overland models feature Quadra-Lift air suspension as standard that allows the ride height to be manually adjusted by the driver using the console controls. Ground clearance can be adjusted to five levels and reaches a maximum height of mm. This is the standard ride position. A clearance of mm offers improved fuel efficiency and maximum comfort during on-road driving.

This setting lifts the vehicle an additional 33 mm from NRH to reach a ground clearance of mm, for clearing off-road obstacles. This setting ensures legendary Jeep off-road capability by adding an extra 66 mm to NRH and reaching the highest ground clearance of mm.

NRH and Park Mode can be selected by the driver to control ride height. This setting lowers the vehicle by 13 mm from NRH. Aero Mode is controlled by vehicle speed and perfectly adjusts the aerodynamics for optimal performance and fuel economy. In Eco Mode, the vehicle is lowered to Aero Mode level to further enhance the Jeep Grand Cherokee's aerodynamics and secure optimum fuel efficiency.

Quadra-Lift air suspension adds up to mm of lift supported by four-corner air springs for premium ride comfort. With the front air dam removed and the Quadra-Lift air suspension, the new Jeep Grand Cherokee features a Selec-Terrain traction control system The class-leading Selec-Terrain traction management system with five different driving programmes has been refined on the Jeep Grand Cherokee. Standard on all Grand Cherokee models except SRT, this sophisticated system has been enhanced through the introduction of the new Selec-Speed Control, in combination with the Off road package.

New Selec-Speed Control allows the driver to control the speed of the vehicle, both uphill and downhill, using the steering wheel paddle shifters instead of requiring the use of the accelerator or brake pedals. Standard on Limitedand Overland, Selec-Terrain traction control system allows the driver to choose the most suitable driving mode to safely tackle any surface.

Through the use of algorithms that enable unsurpassed control and capability, Selec-Terrain electronically coordinates and optimizes up to 12 systems on any terrain providing enhanced vehicle control including: Thanks to Selec-Terrain, the driver can choose between five different driving programmes to achieve the best driving experience on all terrains: Traction Control and Quadra-Lift operate to prevent tyre slip on sand.

Torque is tuned for optimal performance. Traction Control and Quadra-Lift operate to prevent tyre slip and torque is tuned for optimal performance. The system automatically adapts to any on- or off-road situation. Traction is adjusted for ultimate performance over snow-covered roads. Quadra-Lift suspensions reach the maximum height of mm. In this mode, the transfer case, differentials and accelerator coordinate to provide maximum low-speed control. Drivers can manually choose between the following dynamic modes: Auto, Sport, Tow, Track, and Snow — for specific driving performances.

On SRT models, software improvements to Selec-Track further distinguish the five dynamic modes, enabling drivers to choose a vehicle setting that more ideally meets their requirements and ambient conditions. Drivers will find the torque split change in Track Mode provides a vehicle that is more responsive from mid-corner to exit and one that delivers faster lap times at their favourite track.

On-road refinement Jeep Grand Cherokee is widely known for its outstanding on-road driving dynamics, thanks in part to its front and rear independent suspension.

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Variable-rate rear springs deliver improved on-road handling and comfort. The rear suspension also allows the spare tyre to be stored inside the vehicle as opposed to underneath. The rear suspension is a multi-link design with coil spring, Bilstein ADS, aluminum lower control arm, independent upper links tension and camberplus a separate toe link and a stabilizer bar.

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Powertrain Jeep Grand Cherokee is powered by three petrol engine options: All petrol engines available on the new Grand Cherokee meet Euro 6 emission standards. The new eight-speed transmission ensures reduced consumption and emissions, while delivering quicker acceleration and a more precise and smooth shifting.

Fitted for the first time on a Jeep model, the new eight-speed automatic transmission also enhances Grand Cherokee's ride quality to new levels. Several individual shift maps adapt to specific driving conditions to optimize shift quality. Its intelligent software takes into account variables including acceleration, engine torque gradients, kick-down events and travelling speed to determine the appropriate shift map.

The result is automatic shifting ideally attuned to the performance requirements of almost any driving demand with an eye to fuel economy. Fully electronic, the eight-speed automatic features on-the-fly shift map changing, with manual shifting capability and Electronic Range Select using steering-wheel paddle controls. The transmission efficiency and wide ratio spread provide the best possible fuel economy by operating at a lower engine rpm in both city and highway environments.

The addition of more gear ratios also helps reduce the gaps normally associated with upshifting and downshifting. Internally, the transmission has four gear sets and five shift elements multi-disc clutches and brakes.

Also new for the Grand Cherokee and distinguishing only the SRT trim level, is the Launch Control system paired to the new eight-speed automatic transmission. Controlled by a button behind the new T-handle shifter on the centre console, it delivers improved and more consistent straight-line acceleration. The performance experience of the Grand Cherokee SRT is further accentuated by a change in transfer case proportioning and dynamic controls for the Selec-Track system when the vehicle is in Track Mode.