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9 天
汽车尾气尿素泵工作原理是什么?
汽车尾气尿素泵,也称为选择性催化还原(Selective Catalytic Reduction,简称SCR)系统中的尿素喷射泵,其主要工作原理如下: 1. **尿素溶液的储存**:汽车尾气中氮氧化物的减排依赖于尿素溶液。尿素溶液储存在车内的尿素罐中,通常以32.5%的浓度储存。 2. **尿素溶液的喷射**:当发动机控制系统检测到需要减少尾气中的氮氧化物时,会发出指令给尿素泵。 3. **尿素泵 ...
高考网
20 天
2025年高考高二化学方程式总结:关于氮族的方程式
3、氨的催化氧化4NH3+5O2=4NO+6H2O 4、氨气和氯化氢NH3+HCl=NH4Cl 5、氨气和水NH3+H2O=NH3?H2O(可逆) 6、氯化铁和氨水FeCl3+3NH3?H2O=Fe(OH)3(↓)+3NH4Cl(不太肯定是不是会发生氧化还原) 7、氯化铝和氨水AlCl3+3NH3?H2O=Al(OH)3(↓)+3NH4Cl ...
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