Mazda HR-X


The Mazda HR-X was the first hydrogen powered concept car produced by Mazda. The car was unveiled at the Tokyo Motor Show in 1991. It was the first in a series of demonstration hydrogen internal combustion engine vehicles produced by Mazda.

Design

The Mazda HR-X was a small concept car developed by Mazda to showcase the use of hydrogen fuel as a possible environmentally friendly alternative for automotive transport. The car was powered by a two rotor Wankel engine that produced. 37 Nm3 of hydrogen was stored in a metal hydride tank that was refueled by a single nozzle alongside water for cooling. The engine was connected to the wheels via a 4 speed automatic transmission, while a KERS-like system called Active Torque Control System was used to recover braking energy and reuse it to improve acceleration.
The cabin accommodated two people who entered via gull-wing doors. It was constructed of plastic and designed to be nearly completely recyclable.

Performance

The car was capable of a top speed of and had a range of.