Hydrogen Fuel Is The Nexo Step.

March 29th, 2021

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Hyundai Australia has unveiled their Nexo vehicle. Powered solely by hydrogen, it’s set to be a game-changer if the right infrastructure is put in place. For now, a fleet of twenty will roam the streets of Canberra during a trial phase.Nexo is powered by a hydrogen fuel cell, rated at 95kW, coupled to an electric motor. It generates 120kW and 395Nm, and has a theoretical range of over 660 kilometres. Here’s how it works, says Hyundai.

Hydrogen gas is stored in high-pressure tanks and is sent from these to the fuel cells. It mixes with oxygen taken straight from the atmosphere and reacts across a “catalyst membrane” and creates electricity for the engine and battery, and water as the sole by-product. Excess power is stored in the battery system. Fuel Cell Electric Vehicles, or FCEVs, can be refilled in virtually the same time as a petrol fuel tank.

“The arrival of NEXO on Australian roads as an ADR-approved production vehicle is a landmark in Hyundai’s ongoing commitment to green mobility and to hydrogen fuel cell electric vehicle technology.” Hyundai Motor Company CEO, Jun Heo said. The hydrogen NEXO SUV is a cornerstone in the Hyundai portfolio, complementing our hybrid, plug-in hybrid and battery electric vehicles the IONIQ and Kona Electric. NEXO is also a sign of things to come, as Hyundai continues in its long-term drive towards leadership in eco-friendly vehicles.”

It’s a one specification vehicle for the moment, and comes well equipped in that sense. A main 12.3 inch satnav equipped touchscreen is the centre of the appeal, complete with Android and Apple smartphone compatibility. The driver has a 7.0 inch info screen, and a Qi wireless smartphone charger is standard.

Seats are leather appointed, and passengers see the sky via a full length glass roof. Sounds are courtesy of Krell. Nexo rolls on 19 inch alloys, and sees its way thanks to LED headlights and daytime running lights. A Surround View Monitor, Remote Engine Start, Remote Smart parking Assist, and a powered tailgate add extra convenience. Comfort comes courtesy of a dual-zone climate control system, powered front seats, heating for the steering wheel and outboard sections of the rear seats.

SmartSense is the name Hyundai give their safety system package and the Nexo will have Forward Collision Avoidance, Driver Attention warning, and the Blind Spot Collision Avoidance is radar based. Lane Keep Assist, Rear Cross Traffic Avoidance Assist and Smart Cruise with Stop/Go functionality are also standard.

Exterior colour choices are limited. White Cream Mica, and a Dusk Blue Metallic will come with Stone Grey two-tone interior, whilst Cocoon Silver and Copper Metallic are paired with a Dark Blue interior.

The main hydrogen system is built around three storage tanks with a capacity of 156 litres. Up to 6.33 kilograms of hydrogen can be held at a pressure of 700 bar. The testing of the tanks has included structural integrity for collision impacts. The battery is a lithium-ion polymer unit, rated as 240V and 1.56kWh. It also assists in running the onboard 12V systems.

The battery itself effectively comprises most of the floor, making for better cabin packaging and a low centre of gravity. The system is also rated for cold start operation at temperatures down to -29 Celcius. It will start within 30 seconds.

In keeping with its green credentials, structural components include aluminium for the bumper beam, front knuckles, rear wheel carriers and front lower control arms. Lower kerb weight assists in the vehicle’s handling, ride, and reduces cabin noise input. The front fenders are lightweight and flexible plastic.

Hyundai Nexo refill

Bio-based materials also up the green, with up to 12.0 kilograms of CO2 being reduced as a by-product of the manufacturing process. Total weight of bio-product is 34 kilos and this is found in the carpet, headliner, trim material, door trims, and the seats and console. Bio-paints derived from corn and sugarcane waste material are also used.

Strength and safety comes from high tensile steel, making the monocoque body both rigid and torsionally strong, with over 56% of the Nexo’s bodywork made from the high strength steel/ This extends to the tank sub-frame and tested in rear collision simulations.

Hidden details such as air guides underneath and air deflectors aid aero efficiency. Hidden wipers, a Hyundai first, are fitted at front and rear, and with slimline retracting door handles the Nexo has a drag coefficient of just 0.32cD.Chassis development was carried out in Australia, Tim Rodgers, the Hyundai Motor Company Australia Product Planning and Development Specialist, said. “The platform was designed to address this challenge, with an extensive use of lightweight parts for the strut front and multi-link rear suspensions, such as aluminium knuckles and lower control arms. By reducing unsprung mass there is less energy that we have to manage through the damper and the spring, so we can use a slightly different valve characteristic and achieve the results we require.

We’ve come out of the R&D process with a refined suspension that matches quite nicely with acoustic levels in the cabin. Beyond achieving this, the tuning program targeted the normal ride and handling benchmarks, to give NEXO the same style of body control we tune into all our cars, and the same level of competency Australia’s notoriously challenging back roads.”

Not yet available for private sale, it can be leased. Hyundai have a specialist Aftersales team in place to deal with inquiries, and they can be reached through a Hyundai dealership in the first instance.