Audi h-tron quattro concept revealed at Detroit motor show
Source : Audi h-tron quattro concept revealed at Detroit motor show
completely new SUV-based Audi concept features next-generation hydrogen fuel cell technology as well as will be planned to reach production in 2020
Audi has continued its roll-out of alternative drive concepts with the unveiling of the h-tron quattro at the Detroit motor show.
The completely new style will be billed as a production-relevant hydrogen fuel cell SUV which draws heavily on the contemporary platform structure, electric drivetrain architecture as well as battery technology of the earlier e-tron quattro concept.
Promising zero-emissiosn compatibility, a refuelling time of just four minutes using the latest in hydrogen fuelling technology as well as a creditable 373-mile range, the four-wheel-drive concept will be also claimed to have a 0-62mph time of less than seven seconds, a restricted 124mph top speed as well as the ability to run in front-wheel drive mode at typical urban speeds.
The h-tron quattro has been created to showcase a fifth-generation fuel cell stack under development at Audi’s Ingolstadt engineering headquarters in Germany. This particular will be tentatively planned for introduction on a production style of the h-tron quattro in 2020.
The completely new fuel cell stack will be fuelled by hydrogen held in three carbonfibre-reinforced plastic, 700bar tanks, one inside space of the traditional transmission tunnel as well as smaller ones mounted across the vehicle beneath the rear seat as well as the boot floor as well as offering a combined capacity of 6kg. The stack consists of 330 individual cells as well as develops a nominal 110kW (148bhp) of electricity.
Developed to operate at up to 95deg C (an increase of 15deg on the fourth-generation fuel cell stack used inside Audi A7 h-tron prototype driven by Autocar in Los Angeles in 2014), the latest stack will be mounted up front underneath the bonnet inside space traditionally taken up by the combustion engine on existing Audi versions as well as has been conceived to operate in temperatures as low as -28deg C.
Described as being lighter, smaller, stronger as well as more economical than the unit This particular replaces, the completely new fuel cell stack will be claimed to boast an efficiency rating of up to 60% – more than double which of a typical combustion engine.
One key development being touted by Audi will be the reduction inside amount of platinum used in its production, creating This particular cheaper as well as more environmentally friendly. A newly conceived heat pump will be also claimed to absorb waste heat more efficiently, reducing the typical heat build-up within the Indoor associated with early fuel cell prototypes.
In combination that has a relatively tiny 1.8kWh lithium ion battery mounted within the floor inside middle of the passenger compartment which provides yet another boost of 100kW (134bhp) for short periods, the fuel cell stack will be claimed to provide the h-tron quattro that has a range of up to 373 miles. All up, the battery will be claimed to weigh just 60kg.
While the fuel cell operates at between 220 as well as 280 volts, the battery can run between 220 as well as 480 volts. A DC converter mounted within the engine compartment will be used to equalise the difference, providing electrical energy to a pair of electric motors – one mounted within the front axle assembly with 90kW (121bhp) as well as another on the rear axle producing up to 140kW (188bhp). Each electric motor has its own single-speed planetary gearset, which acts as a differential.
The set-up differs via which used by the earlier all-electric e-tron quattro, which featured three electric motors – one up front as well as two at the rear – as well as a much larger lithium ion battery that has a capacity of 95kWh.
All up, the h-tron quattro boasts a combined system output of 210kW, or 282bhp, along with what Audi describes as system torque of 406lb ft. This particular compares with the 370kW (496bhp) as well as 435lb ft of the significantly heavier however more aerodynamic e-tron quattro.
This particular will be sufficient, according to Audi’s figures, to provide the four-seat concept that has a theoretical 0-62mph time of less than seven seconds as well as 124mph top speed. By comparison, the e-tron quattro has respective figures of 4.6sec as well as 131mph.
The driver can influence the amount of energy recuperated on a trailing throttle by selecting one of two modes: gliding or coasting. Fuel consumption will be put at around one kilogram per 62 miles.
Underpinning the completely new Audi will be a modified style of the MLB platform via the upcoming second-generation Q5. This particular has been reworked with an altered floorpan as well as structural elements to accommodate the batteries low down for the best possible centre of gravity.
The suspension – a all 5-link design both front as well as rear – features air springs with both adaptive damping as well as a self-levelling function to automatically lower the Centeng in two stages by up to 30mm for much better aerodynamic efficiency at constant motorway speeds.
Drawing on developments brought to the latest Q7, the h-tron quattro also adopts four-wheel steering with up to 5deg of movement on the rear wheels to reduce the turning circle as well as aid manoeuvrability at lower speeds around town while increasing agility at higher speeds.
Stretching to 4880mm in length, 1930mm in width as well as 1540mm in height, the e-tron quattro will be 250mm longer, 30mm wider as well as 115mm lower than the existing first-generation Q5.
While the drag coeffiicent of 0.27 beats which of existing Audi versions, This particular fails to match the 0.25 of the e-tron quattro due to the requirement for additional cooling for the fuel cell stack at the front end.
The Indoor of the h-tron quattro draws heavily on the design originally unveiled on the Prologue concept at last year’s Los Angeles motor show. This particular provides seating for up to four, with two individual seats front as well as rear.
Among the highlights will be a trio of OLED displays, as planned for the fourth-generation A8 due out in 2017. Boot space will be put at 500 litres – 115 litres less than the e-tron quattro due to the packaging of the hydrogen tanks.
Giving a glimpse at the sort of autonomous driving technology we can expect to see on future Audi versions, the h-tron quattro comes equipped with all the various technologies the German car maker has developed as part of its so-called Piloted Driving research programme, including radar sensors, stereo cameras, ultrasonic sensors as well as a laser scanner.
All systems are controlled in a central driver system known as zFAS. This particular computes a complete style of the concept car’s surroundings in real time as well as makes the information available to the assistance system. They then carry out various driving tasks at speeds of up to 37mph.
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