范文编号:JX1514 范文字数:27021.页数:67 节能型汽车转向油泵的设计和研究 助力转向泵性能的好坏直接关系到汽车转向系统是否能正常运行。目前使用广泛的双作用叶片泵存在着较大的能量浪费;而单作用叶片泵却由于输出流量可随负载变化,可以减少其能量损耗。本文提出单作用叶片泵替代双作用叶片泵的设计思路。与双作用叶片泵相比,单作用叶片泵具有良好的预升、卸能力和节约能量等优点,而且满足变工况调节。针对单作用叶片泵流量脉动较大、定子受力不好的情况,文中对其流量特性和定子力学特性进行研究分析,得出的结论是:叶片数的奇偶性与叶片泵的流量脉动没有直接的关系;定子在x轴向的所受作用力较小,而且方向恒定。对常见的机械中位开式、机械中位闭式、电动中位开式和电动中位闭式几种液压助力转向系统的节能策略进行分析,并进行节能效果的比较。通过分析和比较,发现电动中位闭式液压助力转向系统具有明显节能的优势。在电机方面采用了新型节能的变频液压技术,研究和分析了一种新型变频闭式液压动力系统,主要由变频电机驱动的主油路和补油回路组成。此外,本文运用软件Pro/E对转向泵进行三维数字化建模以避免将来在加工装配过程中人力、物力、财力等不必要的浪费和损失。
ABSTRACT The quality of power assisted steering pump influences the automobile steering systematic normal running directly. The double action vane pump using extensively at present has great energy waste; however the single action vane pump, owing to output flow varying with load, can reduce energy waste. So text adopted single action vane pump to replace double action this vane pump, optimized port plate design and emulated its distributing flow characteristic. The result indicated that this steering pump nicer boosting and unloading pressure ability in advance . This text studied the pump's flow characteristic and mechanics characteristic of its stator and drawed the conclusion that vane number is odd or even number has no relation with flow pulses when vane number is even number, force the stator suffering along the X anxis is less than when vane number is neighboring odd number and its direction is constant. These Center-open EHPS system, Center-closed EHPS system Though analyzing and comparing, it can be proved that the EHPS system will be dominant and developed mainly in the future. The variable speed control hydraulic technology is a new kind of energy saving transmission technique. In this paper, a new variable speed control hydraulic power unit is developed. In addition, this text used the software PRO/E to build the three-dimensional model of the steering pump, thereby avoiding the waste and loss of manpower, material resources, financial resources in the course of processing and assembling in the future.
摘 要 Ⅰ 节能型汽车转向油泵的设计和研究相关范文 |
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