| 摘要 |
The invention relates to a fuel cell unit (2) having at least one chamber (6, 12, 14) through which a fluid can flow, which chamber is sealed off from the surroundings of the chamber by means of a primary seal (8). The invention further relates to a method for monitoring the fuel cell unit (2) for leakage. In order to enable space-saving monitoring of the fuel cell unit (2) for leakage, the primary seal (8) according to the invention is surrounded by a secondary seal (10) such that a monitoring chamber (16) is formed between the primary seal (8) and the secondary seal (10), which monitoring chamber is bounded by the primary seal (8) and the secondary seal (10) and is sealed off from the surroundings of the monitoring chamber by means of the secondary seal (10). In addition, according to the invention, a measurement variable of the monitoring chamber (16), in particular a pressure or a fuel concentration in the monitoring chamber (16), is measured by means of a measuring device such that the fuel cell unit (2) can be monitored for leakage in a simple manner. |
