r挡是倒车挡,d挡是前进挡,n挡是空挡,p挡是驻车挡。1、P档:意思是停车档位。在挂入该档位时,停车锁止机构将变速器输出轴锁止。2、R档:意思是倒车档位。挂入该档位时,就会弄接通液压系统倒档油路,使驱动轮反转,进行倒档行驶。当车辆未完全停稳时,不得强行转至“R”挡,不然就会导致变速器损坏。3、N档:意思空档。在挂入空档时,行星齿轮系统空转,不能输出动力。4、D档:意思是前进档位。当换档操纵手柄处于该档位时,液压系统控制装置就会根据节气门开度信号与车速信号自动接通相应的前进档油路,可随着行驶速度的变化自动升降挡,实现自动变速功能。
档位亦称挡次,珠算术语,指赋予了计算单位的挡,现指有级变化的次序。
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