A fuel cell system has a reformer unit (1) for generating a reformate which is provided as a fuel for a fuel cell unit (4). The fuel cell system includes a sensor (5, 6, 7) for monitoring the quality of the reformate and a valve (9, 10) which can be controlled in dependence upon the sensor. Compared...http://www.google.ca/patents/US6649292?utm_source=gb-gplus-sharePatent US6649292 - Fuel cell system having a reformer unit
