FUEL CELL SYSTEM AND METHOD OF OPERATION

原文（中国語）

A fuel cell system for a motor vehicle is disclosed. The fuel cell system includes an expansion engine having a high-pressure side and a low-pressure side for performing mechanical work. A plurality of fuel cells are stacked on top of one another, which communicate fluidically with the high-pressure side of the expansion engine via a gas path. A water separator is arranged in the gas path for separating water from the exhaust gas. A valve unit is arranged between the water separator and the high-pressure side of the expansion engine for adjusting an amount of exhaust gas to be supplied to the expansion engine. A bypass-gas path through which the exhaust gas can flow, which branches off from the gas path between the plurality of fuel cells and the water separator. A bypass-valve unit arranged in the bypass-gas path.