Directional Shift Management Function
指导性换档管理功能可减小传动系上的应力。 如果操作员换档时经过空档这一档位，且发动机转速在 1350 转/分以上，ECM 会发出一条命令，将所需的发动机转速暂时设为低怠速。
如果操作员换档时经过空档这一档位，且发动机转速在 1500 转/分以上，ECM 会记录一个变速箱误用事件。 在这种情况下，发动机转速过高，暂时超驰油门不足以防止这种错误换档。
注: 在发动机高转速的情况下挂到空档不算错误换档。 挂到空档不会触发错误换档逻辑。
Caterpillar Information System:
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