Hydrogen Motor

Mazda RX-8 Hydrogen RE

Mazda RX-8 Hydrogen RE (2007)

The RX-8 Hydrogen RE is a hydrogen rotary engine vehicle which operates on both high-pressure hydrogen and gasoline. It is equipped with Mazda's dual-fuel system that enables switching between hydrogen and gasoline fuel modes.

Upon approval by Japan's Ministry of Land, Infrastructure and Transport, driving tests on public roads commenced in October 2004. Since February 2006, eight cars have been leased to environmentally-conscious government and private enterprises for use in initiatives and at events. As for operations abroad, Mazda announced its participation in the Norwegian hydrogen highway project "HyNor" and will deliver 30 RX-8 Hydrogen REs in succession starting in 2008.

The RX-8 Hydrogen RE has a significant role in the promotion of a global hydrogen society and has been highly acclaimed around the world.

Mazda RX-8 Hydrogen RE Hyundai I-Blue

* Automatic transmission and the extension of the hydrogen fuel range.

In preparation for introduction to the marketplace, an automatic transmission was made available to increase user-friendliness. In addition, the driving range in hydrogen fuel mode was extended to 100 km (in 10/15 mode) thanks to a larger fuel tank and improved fuel efficiency technology.

* Fuel switching

When the system runs out of hydrogen fuel, it automatically switches over to gasoline. Further, in the case of long-distance trips and trips to areas with no hydrogen fuel supply, the driver can manually switch from hydrogen to gasoline at the touch of a button, even while the vehicle is moving. The rotor-shaped fuel mode selection button is located at the bottom right of the driver's side instrument panel, and is illuminated in blue when in hydrogen mode. Switching from gasoline to hydrogen is possible only when the vehicle is stopped.

Fuel switching

* Driver interface

A hydrogen fuel level meter, used fuel indicator and warning light, among other features, are integrated into the instrument panel within the driver's line of sight.

While the vehicle is running, either the hydrogen or the gasoline fuel indicator is always illuminated to show which fuel is being used. The fuel switch is illuminated only when the vehicle is running in hydrogen mode.

In addition, a chime rings before and after the fuel mode changes to notify the driver

Mazda RX-8 Hydrogen RE Mazda RX-8 Hydrogen RE
Name Mazda RX-8 Hydrogen RE
Body and chassis Overall length 4435mm
Overall width 1770mm
Overall height 1340mm
Wheel base 2700mm
Passenger capacity 4
Tires 225/55R16
Engine Type RENESIS hydrogen rotary engine
(dual-fuel system)
Fuel Hydrogen and gasoline
Maximum output In hydrogen mode: 80 kW (109 PS)
In gasoline mode: 154 kW (210 PS)
Maximum torque In hydrogen mode: 140 Nm (14.3 kgm)
In gasoline mode: 222 Nm (22.6 kgm)
Transmission Four-speed AT
Maximum range (10/15 mode) In hydrogen mode: 100 km