为了使行走机械也能够多满足Tier 4 Final排放标准的要求,行走机械的许多系统都要重新设计,其中最重要的是消耗功率的动力部件,例如泵和电机。与Tier 4 Final排放标准有关的问题不容忽视。因为要实现Tier4 Final排放标准就要在行走机械中增加许多附件,同时也就增加了许多空间的占用,这就迫使行走机械的生产厂家改进原有设计或重新设 In order to be able to meet the Tier 4 Final emissions standards for mobile machinery, many of the systems used in the mobile machines have to be redesigned. The most important of these are power-consuming power components such as pumps and motors. The issues related to Tier 4 Final emission standards should not be overlooked. Because to achieve the Tier4 Final emission standards will increase the number of attachments to the traveling machinery, but also increased the occupation of a lot of space, which forced the mobile machinery manufacturers to improve the original design or reset