Hummer HX Concept, 2008

 

 

 

 

•  Hummer HX Concept, 2008

The HUMMER HX concept challenges the hierarchy of the trail. HUMMER displayed the nimble, reconfigurable off-roader at the 2008 North American International Auto Show.

More compact than a HUMMER H3 - 81 inches (2,057 mm) wide, with a 103-inch wheelbase (2,616-mm) - the HX concept is an open-air, two-door off-road vehicle that packs the off-road acumen for which HUMMER has become legendary, along with an easily convertible body that acclimates to varied trail conditions, cargo needs or passenger whims. Its design is based on the ideas developed by a trio of young designers who are new to the HUMMER studio.

The HX offers an open-air driving experience via a pair of removable roof panels above the driver and front passenger, and a modular, removable rear roof assembly. With the roof panels and roof assembly removed, the HX is transformed into a true convertible.

Easy removal of the roof panels and rear-roof assembly enables quick conversion from a closed vehicle to an open one. The HX also was designed with several roof assemblies, allowing this versatile vehicle to be configured as an SUT (with the roof assembly removed), a stylish slant-back or a traditional, wagon-like design that offers a bit more cargo space.

The HX was shown with a slant-back configuration, wearing a desert-inspired matte olive paint scheme, at the North American International Auto Show. Additional convertible features:

•     Removable doors - easily removable pins in the exposed hinges allow the doors to be removed quickly - an appreciated feature of many serious off-roaders
•     Removable fender flares - attached with quarter-turn quick-release fasteners, the composite fender flares can be quickly removed for additional trail/rock clearance, or if the flare is damaged during off-road driving

Purposeful exterior
The design of the HX was driven by input from three young designers who were new to GM and the HUMMER design studio. As part of their "initiation," they were charged with developing concept drawings for a smaller, youthful HUMMER and the HX is a direct result of their creativity. The HX concept is based on one of the designers' original illustrations, but incorporates the best ideas and elements from the other designs.

Inside and out, the HX carries a purposeful aesthetic that, from initial sketches to finalized clay models, was refined in only six months.

The exterior, the lightweight theme is evidenced in the appearance of exposed, billet aluminum suspension components that feature CNC-machined lightening relieves, as well as clean, unadorned bodywork and minimal trim. The lightweight theme is taken to its extreme when the roof panels, roof assembly, fender flares and doors are removed.

Classic HUMMER design cues make the HX instantly recognizable, including the round headlamps located in square housings, an upright windshield profile, minimal overhangs, hood vents and prominent air intakes. The air intakes are functional and feed a V-6 engine beneath the hood, while the hood vents are active - they articulate to allow hot underhood air to escape.

And while the headlamps and grille are clearly HUMMER cues, they've evolved on the HX with a "chopped circle" motif. The grille slots and headlamps, as well as elements on the interior, have the appearance of circles or ovals that have been clipped at the top and bottom, creating a unique appearance that speaks to the vehicle's purposeful aesthetic.

And while it is unadorned by extraneous embellishments, the HX's exterior is nonetheless outfitted with features that speak to HUMMER's legacy of technology and innovation, including HID headlamps with focusing rings that adjust automatically when they're turned on - much like the lens of an auto-focus SLR-type camera. LED technology is used for the front turn signal lamps and taillamps.

Aeronautically inspired interior
From aircraft-inspired seats to integrated, off-road-ready tools, the HUMMER HX's interior has a beauty that lies in its purposeful intent. It was inspired by the functional and lightweight elements found in aircraft.

Reinforcing the stripped-to-the-essence feel, the exterior's matte olive color carries over onto the interior's largely sheet metal-covered panels. The color is accented with pressed or extruded aluminum components, such as the handles, switches and other necessary parts.

Furthering the aeronautical influence is the instrument panel, which uses an exposed, extruded aluminum cross-vehicle beam as its foundation. On the beam, the instrument cluster and other vital controls are mounted; and it also features a unique, removal top cover that provides significant storage capability.

A rubberized floor and ballistic nylon-material covering on the instrument panel and other interior components reinforces the functional aesthetic.

Seating and console details
Like aircraft seats, the HX's seats are constructed on a lightweight framework with minimal components that feature lightening holes and strength-enhancing cross braces or triangulations. They are mounted on exposed, aircraft-style tracks and trimmed with a weather-resistant neoprene material.

The HX seats four, with a pair of bucket-type seats in the second row. The rear seats mimic the front seats' design and can be removed to generate more cargo room. All the seats feature a four-point, racing-style safety harness.

The inner seat track on both front seats is located beneath the outer edges of a prominent center console. The console offers exceptional storage capability and houses a unique shifter that mounts low and out of the way when the vehicle is parked - also hiding from sight the engine starter button. It has a spring-loaded cover that pops up when the driver is ready to select a gear.

The console also houses a resting place for phones, MP3 player and iPods or iPhones. In fact, there is no conventional radio in the HX, only integrated speakers. Passengers plug in an iPod, or similar device, to a USB connector to play music in the HX.

Gauges and tools
The "cut-off circles" motif of the exterior is seen even more so on the HX's interior, as the gauge cluster, instrument panel vents and even the steering wheel carry the design element.

A three-element gauge cluster - each of the three instrument "pods" carries the cut-off circle design - delivers crucial driver information in either a highway or off-road mode. This conceptual reconfigurable gauge layout uses LCD screens with multiple layouts, including a navigation system. The nav system features GPS and compass information; and is designed to upload trail information before setting off on an excursion.

The center gauge pod houses a speedometer and tachometer, but changes to a wheel angle indicator when the transmission is in the low position. This off-road mode changeover from the highway mode gives the driver information that is more pertinent to the driver conditions. The trail view of a camera mounted in the rear-view mirror can be displayed on the instrument panel, too.

The off-road mode features of the instrument panel comprise the virtual tools of the HX, while others are mounted for physical use, including a folding shovel, flashlight and first-aid kit. They all carry the "clipped circle" design motif found throughout the vehicle.

Ready for rocks, trails and more
With its compact dimensions, almost no overhangs and grippy 35-inch tires, the HX is ready for all terrains. Like all HUMMER production models, the HX has sturdy, body-on-frame construction, onto which is mounted front and rear independent suspensions.

The front suspension features an electronic-disconnecting stabilizer bar for enhanced maneuverability when driving off road, and the rear suspension is located with Computer Numerical Controlled (CNC)-machined, billet trailing arms. Heavy-duty shocks with piggyback reservoirs were custom-made for the HX by renowned racing shock manufacturer Fox; one is mounted at each wheel position.

A full-time 4WD system pulls the HX over, through and around off-road obstacles. It transfers torque to the front and rear axles, each of which is equipped with a locking differential. The torque meets the trail via custom 35-inch-tall off-road tires that are mounted on a set of custom, bead-lock-style wheels that have a two-tone appearance; dark-painted wheel centers complemented by silver-anodized outer rims.

A complete underbody armor kit, including a front skid plate, powetrain protection and more, protects the HX from wayward rocks and other potentially damaging objects. A power-operated winch is located in the front bumper, and the HX has recovery hooks mounted on the front and rear bumpers, just in case its help is required for wrangling others out of unfortunate off-road situations.

Motivation for the HX comes from an E85 FlexFuel 3.6L SIDI V-6 that is backed by a six-speed automatic transmission. The transmission is teamed with the 4WD system to offer exceptional low-speed traction and crawling capability. Four-wheel-disc brakes provide confident stopping power.

SPECIFICATIONS

•     Body style / driveline: two-door, four-seat open-top, four wheel-drive
•     Construction: welded steel frame, electro galvanized steel
•     Engine type: 3.6L V-6 VVT (variable valve timing) with spark-ignition, direct injection
•     Displacement (cu in / cc): 217 / 3564
•     Bore & stroke (in / mm): 3.70 x 3.37 / 94 x 85.6
•     Block material: sand-cast aluminum with cast-in bore liners
•     Cylinder head material: cast aluminum
•     Valvetrain: DOHC, 4 valves per cylinder, variable valve timing (VVT)
•     Fuel delivery: direct high-pressure fuel injection
•     Compression ratio: 11.3:1
•     Horsepower (hp / kW @ rpm): 304 / 227 @ 6300 rpm (est)
•     Torque (lb.-ft. / Nm @ rpm): 273 / 370 @ 5200 rpm (est)
•     Fuel Type: unleaded regular or E85 ethanol
•     Transmission: Hydra-Matic 6L50 six-speed electronically control automatic transmission

    Suspension:
        front: independent SLA, custom Fox Racing coil-over shocks; 2-in shocks, 2.5-in springs
        rear: semi-trailing link, custom Fox Racing coil-over shocks; 2-in shocks, 2.5-in springs

    Wheel travel (in / mm):
        front: 9 / 228
        rear: 11/ 279

    Brakes: four-wheel disc; Brembo 6-piston calipers (front); Brembo 4-piston calipers (rear)
    Rotor diameter x thickness (in / mm): 15 x 1.25 / 381 x 31.75
    Wheel size & type: 20-inch x 9-inch
    Tires: 35-inch custom Bridgestone Dueler
    Wheelbase (in / mm): 103 / 2616
    Overall length: 171 / 4343
    Overall width (in / mm): 81 / 2057
    Overall height (in / mm): 72 / 1829
    Track (in / mm): 67 / 1702 (front); 68 / 1727 (rear)
    Minimum ground clearance front (in / mm): 13 / 320
    Approach angle (degrees): 56
    Departure angle (degrees): 51
    Breakover angle (degrees): 25
    Grade capability (percent): 60
    Side slope capability (percent): 40
    Water fording capability (in / mm): 24 / 610 (at 5 mph)
    Seating capacity: 4

Hummer H3T Alpha, 2009

 

 

 

•  Hummer H3T Alpha, 2009

The HUMMER is bringing its unmistakable style and unmatched capability to the truck market with the 2009 H3T. It is based on the architecture of the popular H3, but features a five-passenger crew cab and a separate five-foot-long (1.5 meters) bed.

The Hummer H3T is bigger than a midsize truck and smaller than a full-size truck, creating its own niche in the market. It also is infused with the attributes expected of a HUMMER, including exceptional off-road capability and a premium interior that is as functional as it is comfortable.

In addition to its segment-defying size, The Hummer H3T also stands apart from other trucks with its signature HUMMER off-road capability. It is the only midsize truck to come standard with full-time four-wheel drive, 32-inch tires and functional skid shields. It also is the only midsize truck to offer front and rear locking differentials, as well as 33-inch tires. The V-8-powered H3T Alpha can tow up to 5,900 pounds (2,676 kg).

The Hummer H3T is offered in four trim levels, including five-cylinder models and the popular, V-8-powered H3T Alpha edition. Production is scheduled to begin in the third quarter of 2008 at GM's Shreveport, La., assembly plant, with vehicles arriving at HUMMER dealerships shortly thereafter. HUMMER will sell The Hummer H3T in North America, Europe and the Middle East.

Design
Like all HUMMER models, The Hummer H3T has a purposeful design. Its consistent and iconic styling cues include a wide, aggressive stance; a low roofline and high beltline; and large, off-road tires. The wide, seven-slot grille and round headlamps mounted in square housings are signature HUMMER design elements.

The crew cab body shares H3 styling and components from the B-pillar forward, while the rear section of the cab and the separate bed are unique to The Hummer H3T. The five-foot bed is similar in design and function to GM's recently redesigned full-size trucks, including an easily removable tailgate and provisions for a bed-rail accessory system. A full-size spare tire is mounted beneath the bed.

The bed is sized to carry a wide range of popular outdoor necessities, from hauling motocross bikes to Baja, a quad to camp, or backcountry gear to the trailhead. One of the industry's largest portfolios of accessories complements The Hummer H3T's bed, offering different cargo management options to suit all of those lifestyle interests.

Accessories
One of the industry's broadest portfolios of vehicle accessories has been developed for The Hummer H3T. Centered on active lifestyles, items such as removable and lockable bed-mounted storage boxes; an adjustable bike chock that can be used to help secure mountain bikes or motorcycles; and a bed extender make full use of the standard bed-rail cargo management system. A range of additional accessories that improves off-road capabilities, provides passenger entertainment and enhances exterior styling is also available. There are more than 75 HUMMER Genuine Accessories offered.

In addition to the factory-developed accessory portfolio, HUMMER has partnered with top automotive aftermarket companies to develop more than 50 Officially Licensed HUMMER Accessories - a first for the brand. A variety of exterior enhancements, such as a Slant Back Bed Cover, hard tonneau covers and a winch are offered, along with cargo management solutions such as the BedSlide and bed divider, offering countless possibilities to personalize The Hummer H3T.

Interior
The Hummer H3T's crew cab cabin offers seating for five adults, with a 60/40-split rear bench seat that folds flat for increased cargo-carrying options. The cabin's layout is essentially identical to the acclaimed H3 SUV, with premium materials and attention to detail that give the vehicle a functional yet refined aesthetic.

Standard amenities also include air conditioning, power locks, power windows and remote keyless entry. An AM/FM radio with CD is standard and a premium Monsoon audio system is available. XM Satellite Radio also is standard and includes three months of trial service.

HUMMER's Rear Vision system and a navigation system are available. The Rear Vision system uses a camera mounted on the rear bumper, directly above the trailer hitch mount, to provide a view of objects directly behind the vehicle. Also, the safety and security of OnStar is standard, with Turn-By-Turn Navigation and hands-free Bluetooth connectivity available.

Powertrain
Standard in The Hummer H3T is the Vortec 3.7L I-5 with dual overhead cams and variable valve timing. This inline five-cylinder engine offers an excellent combination of power and efficiency, delivering 242 horsepower (180 kW) at 5600 rpm* and 242 lb.-ft. of torque (328 Nm) at 4600 rpm. It is backed by a five-speed manual transmission or an available four-speed, electronically controlled automatic.

The Hummer H3T Alpha's 5.3L engine is a powerful and efficient member of GM's legendary small-block V-8 family. It is rated at 300 horsepower (224 kW)* and 320 lb.-ft. of torque (434 Nm).* An aluminum cylinder block is used with the H3 Alpha's engine. It helps reduce overall mass and maintains a more desirable front-to-rear weight balance.

A Hydra-Matic 4L60 electronically controlled four-speed automatic transmission is paired with the 5.3L engine. Flat towing is enabled on all H3 and H3T models.

Chassis
The Hummer H3T's frame and suspension system are based on a stretched version of the H3 SUV's chassis and suspension - the same race-proven design found on Baja 1000-winning stock-class race trucks. The wheelbase measures 134.2 inches (3,409 mm) - 22 inches (86 mm) longer than the H3 SUV.

A ladder-type frame is the truck's foundation and it has a modular, three-piece design that incorporates fully boxed components for outstanding strength and stiffness. An independent SLA torsion bar front suspension and multileaf Hotchkiss-type rear suspension are used. There are two suspension packages:
    * Z85 Heavy-Duty Handling and Trailering - This standard suspension delivers an excellent balance of on-highway comfort and off-road capability. It includes 32-inch all-terrain tires mounted on 16-inch, smoke-color steel wheels, specially tuned heavy-duty shocks and either a 4.56-ratio (3.7L) or 4.10-ratio (5.3L) rear axle.
    * Off-Road Adventure - Designed for more aggressive off-road performance, this optional suspension package includes taller, 33-inch tires, specifically tuned shocks, locking front and rear differentials, 4.03:1 low-range gearing in the transfer case and industry-leading crawl ratios of either 68.9 with the manual transmission or 56.2 with the automatic.

To support the torque output of the 5.3L V-8, The Hummer H3T Alpha's front differential case is made of cast iron; other models feature an aluminum case. V-8-powered vehicles also receive higher torsion bar rates to support the increased mass and specific shock valving. The chassis and suspensions were validated in real-world testing on off-road trails in Moab, Utah; the Rubicon Trail in California, and other challenging off-road venues.

Off-road capability
The Hummer H3T lives up to HUMMER's legendary off-road reputation, with best-in-class extreme off-road capability. Highlights include:

    * Ability to climb a 60-percent grade and traverse a 40-percent side slope
    * Exceptional 10.2-inch (285 mm) ground clearance (with 33-inch tires)
    * 38.7-degree approach angle and 30.1-degree departure angle (with 33-inch tires)
    * Segment-first available front- and rear-locking differentials
    * Standard HUMMER Hill Hold Assist for improved hill ascension

Complementing the features that enable The Hummer H3T's impressive off-road prowess are a host of first-class protective elements, including four standard skid shields: a front shield, an oil-pan shield/front-axle shield, a transfer case shield and a fuel tank shield.

Safety
Continuing HUMMER's tradition of delivering a broad range of safety systems, The Hummer H3T offers the following standard features:
    * Dual frontal air bags with GM's passenger sensing system
    * Head curtain side-impact air bags
    * StabiliTrak electronic vehicle stability control system
    * Four-wheel ABS with traction control
    * Tire pressure monitoring system
    * LATCH rear child seat anchors
    * OnStar with one-year Safe & Sound service

The Hummer H3T was also designed for vehicle-to-vehicle compatibility in the event of a crash, and its rigid body structure provides good passenger protection.