The present general lecture gives a view over the relevance and potential of fluid power systems for automotive applications in the present and future, compared to electric drives as their major challengers. In order to address their respective relevance, the classification of automotive vehicles according to ISO/DIN 70010 is shown in the introduction. There are different reasons which stimulate innovations in drive engineering, where the need for saving energy during production and operation of automobiles can be considered as the first order demand for the future. For assigning the appropriate drive technology, a distinction between traction ("main") drives and additional drives ("auxiliaries") is determined. In order to utilise their specific advantages, more and more different energy sources and/or energy converters (drives) have been combined in one vehicle, known as hybrid traction drives having certain topologies. To understand the relationships, the influence of different drive characteristics and efficiencies on the driving and braking performance of the vehicle is discussed. Selected types of drives are compared, where particularly the aspect of energy storage has to be taken into account. From the engineering point of view, an automobile's auxiliary drives are of same level of interest as its traction drive(s). In this area a tendency to electric actuation can clearly be identified, which allow a "power on demand" strategy in an appropriate manner. At present, the low voltage board net may considered as the major handicap, however, once having high voltage aboard, a remarkable breakthrough of electric auxiliary drives can be expected. Anyway, due to their specific advantages, fluid power solutions may retain their importance in automotive engineering, e.g. pneumatic springs and servo brakes and hydrodynamic torque converters. In conclusion, the necessity of significant reduction of energy during the whole automotive life cycle should remain in the focus, particularly during the phases of production and utilisation.
展开▼
机译：与电动驱动器为主要挑战者相比，本一般讲座透露了对现时汽车应用的流体电力系统的相关性和潜力。为了解决各自的相关性，在引言中示出了根据ISO / DIN 70010的自动车辆的分类。有不同的原因，刺激了驱动工程中的创新，在那里，在汽车生产和运营过程中节省能源的需求可以被视为对未来的第一个需求。为了分配适当的驱动技术，确定牵引力（“主要”）驱动器和额外的驱动器（“辅助”）之间的区别。为了利用它们的特定优点，在一辆车辆中组合了越来越多的不同能源和/或能量转换器（驱动器），称为具有某些拓扑的混合牵引驱动器。为了了解关系，讨论了不同驱动特性和效率对车辆的驱动和制动性能的影响。比较所选择的驱动器，其中必须考虑备受能量存储的特别方面。从工程角度来看，汽车的辅助驱动器具有与其牵引车的兴趣水平相同。在该区域中，可以清楚地识别电动致动的趋势，其以适当的方式允许“按需按需”策略。目前，低压板网可以视为主要的障碍，然而，一旦乘坐高压，可以预期电辅助驱动器的显着突破。无论如何，由于其特定的优势，流体电力解决方案可能会在汽车工程中保持重要性，例如，气动弹簧和伺服制动器和流体动力扭矩转换器。总之，整个汽车生命周期内能量显着降低能量的必要性应留在焦点中，特别是在生产和利用阶段期间。
展开▼
