METHOD TO DETECT FUEL CELL GAS LEAK

The invention provides a method for determining if there is a gas leak in an anode volume of a fuel cell stack in a fuel cell system. The method includes determining a total amount of gas loss in theanode volume of the fuel cell stack during a predetermined period of time, and monitoring losses of the gas from the anode volume during the predetermined period of time, such as reaction losses, crossover losses and overboard losses. The method also includes subtracting the losses of the gas from the total amount of gas loss to get an anode leak loss and comparing the anode leak loss to a predetermined threshold to identify a hydrogen gas leak. 种用于确定燃料电池系统中的燃料电池组的阳极体积中是否存在气体泄漏的方法。该方法包括确定在预定时间段期间燃料电池组的阳极体积中的总气体损失量，并且监测在预定时间段期间来自阳极体积的气体损失，诸如反应损失、交叠损失和舷外损失。该方法还包括从总气体损失量中减去气体的损失以获得阳极泄漏损失，并将阳极泄漏损失与预定阈值进行比较以识别氢气泄漏。