2022 Toyota Mirai: Everything You Need to Know About

The All-New Toyota Mirai 2022: technical component, features of fuel cells, dynamism. The first release of the model went on sale back in 2014. The patented TFCS (Toyota Fuel Cell System) unit with a capacity of 114 kW combines the main advantages of hydrogen fuel cells and a hybrid drive platform.

The expected design will be even more powerful, more autonomous and at the same time cheaper, as the company monitors the trend of more affordable vehicles operating on alternative energy sources.

Toyota’s vision for hydrogen cars

In the understanding of Toyota engineers, the future of the automotive industry lies in hydrogen fuel. Hydrogen is an affordable, efficient, clean energy source that enables mobility with minimal carbon emissions in cars, trains, ships, and other vehicles. Hydrogen is also a renewable energy source and is easy to transport.

The first work of Toyota on developing an electric vehicle on hydrogen fuel cells started in 1992. It was only in 2014 that the company successfully announced the launch of the luxury sedan Mirai. The groundbreaking achievement was achieved through many years of experience of the Japanese company employees in hybrid technology – a sought-after direction for a wide range of electrified vehicles.

The basic concept of the hybrid powertrain has been perfectly adapted to plug-in hybrid vehicles, all-electric models and versions with hydrogen fuel cells.
Each version of the platform has distinctive features and unique qualities that make it compatible with different power plants.

The company is currently working hard to release the next-generation Toyota Mirai for the 2022 model year. The novelty uses an improved version of the FCEV concept, which takes hydrogen cars to the next level and provides an increased range, dynamism and emotional appeal in style and driving performance.

The redesigned fuel cell system, intelligent onboard equipment and aerodynamic efficiency increase the autonomy up to 650 km without harming the environment.

Design and layout changes

When developing the new version of the Toyota Mirai 2022, Toyota’s designers have stuck to the idea of ​​making comprehensive improvements to enhance the car’s appeal to consumers and make the car more manageable.

Compared to its predecessor, the dimensions of the model have been slightly increased. Now they make up:

  • Length – 4975 mm (added 85 mm);
  • Width – 1885 mm;
  • Wheelbase – 2920 mm (+140 mm).
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The rims enlarged to 20 inches give the car exterior a unique charm and elegance. They also provide the impression of a low centre of gravity.

For a long time, the Japanese automaker did not particularly reveal the technical characteristics of the upcoming novelty. At the same time, insiders and official sources said that the new Toyota Mirai 2022 would use a slightly redesigned power unit and fuel cells layout.

The engine is located at the rear of the car, and the batteries are not located where they were in the previous generation (in the middle of the car between the passenger and driver’s seat). This is a justifiable measure that has allowed manufacturers to extend the model’s range and improve handling.

This explains the logical concept for a production car: the fuel cell battery in the front causes the vehicle to “drive” on the road, so the engineers decided to install it in the back.

Specifications

The novelty is designed based on the GA-L platform, which provides a change in the arrangement of fuel cells and transmission units for the most efficient use of space. The result is a more spacious cab and improved chassis balancing.

Particular emphasis was placed on the range. Increased power, a larger hydrogen tank, and improved aerodynamics and fuel efficiency contribute to an increased range of up to 650 km.
The car is equipped with three high-pressure hydrogen fuel tanks, which increased autonomy by 30%.

The tanks have a T-shaped layout. The most extended section is located longitudinally and centrally under the car floor. There is a compartment under the rear seats and trunk for the two smaller tanks. The total capacity of these tanks is 5.6 kg of hydrogen (the volume of the predecessor was 4.6 kg of hydrogen fuel).

A well thought out configuration and redesigned arrangement of the elements of the fuel system allowed for a lower centre of gravity and preservation of cargo space. The new platform also allows the innovative fuel cell to be moved from its current location to the front compartment. At the same time, the high-voltage battery and electric motor can be positioned under the rear axle.

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According to the manufacturer, the drivetrain layout has been optimized to provide a 50:50 weight distribution between the front and rear of the vehicle.

Hydrogen tanks have a more durable multilayer design and are characterized by the reduced weight (hydrogen accounts for 6% of the total weight of the fuel and tanks).

Features of fuel cells Toyota Mirai 2022

Toyota’s new battery and power converter (FCPC) has been adapted to the GA-L platform. The designers combined all the elements of the fuel system in one place (including water pumps, intercooler, air conditioner, hydrogen recirculation pump and other units), reducing their weight and dimensions, but improving performance.

The battery housing has been reduced by using friction welding technology. This narrowed the gap between the body and the fuel cell.

The battery of fuel cells uses a solid polymer (as in the current generation Mirai), while it is smaller and contains 330 cells (the predecessor had 370). At the same time, the car demonstrates a new record for specific power (5.4 kW / l. The maximum power reaches 128 kW (against 114 kW in the current version).

Engine performance has improved dramatically. Now it retains its declared properties even at temperatures as low as -30 ° C.

The concentration of system connections under the chassis has reduced the number of components, which has a positive effect on weight and headroom.

Focusing on advanced technology and modernizing every detail allowed Toyota engineers to reduce the weight of the fuel system by 50% and increase power by 12. The list of upgrades includes offset manifolds, reduced cell weight and size, the optimized shape of the gas separator, as well as the use of innovative materials in the electrodes. …

The vehicle also has an FDC DC / DC converter and modular high-voltage parts. At the same time, their weight decreased by 2.9 kg to 5.5 kg.

Innovative technological solutions have saved a lot of space. For the first time, Toyota ditched conductive materials in favour of silicon carbide semiconductor elements in transistors.

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An identical approach to reducing size and weight has been applied to other elements of the fuel system. The air intake is adapted for low-pressure losses and is equipped with a sound-absorbing membrane, minimizing noise in the passenger compartment. The exhaust is made of resin pipe and is designed to let in as much air and water as possible. Also, the low noise level in the cabin is due to a more powerful silencer.

Lithium-ion battery

The new Toyota Mirai 2022 uses a lithium-ion high-voltage battery rather than a nickel-metal hydride unit. And although it is smaller in size, its energy consumption and performance are much higher. The power supply also stands out for its improved environmental standards.

The battery contains 84 cells with a nominal voltage of 310.8V (compared to 244.8V) and a capacity of 4.0 Ah. The total weight has been reduced from 46.9 to 44.6 kg. The reduced dimensions of the battery made it possible to install it behind the rear row of seats so as not to take up space in the cargo compartment. A new air cooling technology has also been designed with inconspicuous air intakes on either side of the second row of seats.

Dynamics

The GA-L platform, specially designed for the Toyota Mirai 2022, provides the following benefits:

  • Lower centre of gravity
  • Improved inertial performance
  • Increased body rigidity, which enhances the dynamic margin

By displacing the battery from under the floor into the front compartment and placing the battery and engine in the rear, the engineers have achieved a 50:50 weight balance front and back for improved dynamic performance.

The new platform uses multi-link suspension elements rather than MacPherson struts (as in the previous version). This configuration improves stability, handling and ride comfort. The suspension consists of more durable anti-roll bars.

Conclusion

Together with the presentation of Toyota Mirai 2022, Toyota plans to confidently gain a foothold in the hydrogen car market and increase its sales figures by ten times. This growth will be supported by improved model performance and a 20% price reduction.

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