Tail gas emission device of hydrogen fuel cell engine

The invention discloses a tail gas emission device of a hydrogen fuel cell engine, which comprises an electronic throttle valve, an exhaust tail pipe, a flow guide pipe, a three-way catalyst, a sealing ring, a spring and the like. By adopting a multifunctional integrated design, the device has the functions of intensively discharging emissions of a fuel cell engine, eliminating hydrogen leaked by the galvanic pile and residual hydrogen in electrochemical reaction, realizing negative pressure ventilation of the galvanic pile protection cover without auxiliary electric energy and the like, and is simple in structure, high in applicability, low in technical difficulty, convenient to install and transport, low in manufacturing and maintenance cost and suitable for large-scale production. 本发明公开了一种氢燃料电池发动机的尾气排放装置，包括电子节气门、排气尾管、导流管、三元催化器、密封环、弹簧等，采用多功能一体化设计，具有将燃料电池发动机排放物集中排放、消除电堆泄漏的氢气与电化学反应残余的氢气、无需辅助电能实现电堆保护罩负压通风等功能，结构简单、适用性强、技术难度低、安装运输方便、制造和维护成本低，适于规模化生产。