德龙排气制动/PAXBRAKE

 德龙排气制动阀，零件号1000728946，又名排气蝶阀、发动机制动阀，品牌PAXBRAKE。适配陕汽德龙系列重卡，安装于排气管道上。依靠气缸驱动蝶阀关闭排气管，增大发动机排气阻力，实现车辆辅助减速，长下坡路段有效减轻行车制动器负荷，防止刹车过热失效。阀体采用铸铁材质，支架为镀锌钢板，气缸密封性能优异，弹簧复位灵敏，耐高低温。可直接替换原车损坏、卡滞、漏气的排气制动总成，安装孔位匹配原车，做工扎实，制动响应稳定，提升山区行车安全，保护整车制动系统。

Shacman Delong exhaust brake valve, OE No.1000728946, also known as exhaust butterfly valve, engine brake valve, brand PAXBRAKE. Fits Shacman Delong heavy trucks, mounted on exhaust pipe. Driven by air cylinder to close exhaust pipe and increase engine exhaust resistance for vehicle auxiliary deceleration. It reduces load of service brake on long downhill roads and prevents brake overheating. Cast iron valve body, galvanized steel bracket, air cylinder with good sealing and sensitive spring reset, high and low temperature resistance. Direct replacement for stuck, leaking or damaged original exhaust brake assembly. Matching mounting holes, stable braking response, improve driving safety in mountain area and protect brake system.