Interview with Senior System Engineer Coco Zhang Zhen
采访高级系统工程师张珍

Question 1: Ms. Zhang Zhen, why do you work for Liebherr in China and what is so exciting about it, compared to working at successful local competitors?

问题1:你为什么要在中国为利勃海尔工作? 和其他优秀的竞争者相比，有什么令你兴奋的?

Coco Zhang Zhen: Liebherr stands for social responsibility. The Liebherr team is innovative, positive, experienced and energetic. I like the Liebherr brand and wanted to join the team in China. I believe I will have a successful future in this excellent company. The quick development of not only China’s high-speed train technology but also e-mobility/green power is continuing and we as Liebherr are a part of it. China needs new technology to further boost its “going global” railway strategy. The country is the key development market for e-mobility applications and Liebherr can participate in this development through our team here in China. Our collaborative effort will create a win-win situation for the community and the Liebherr team.

张珍: 利勃海尔有自己的社会责任。利勃海尔中国具有创新精神，就我个人而言，我喜欢利勃海尔这个品牌，也愿意加入这个积极向上，经验丰富，充满活力的团队。我相信在这个优秀的公司我会有一个美好的未来。不仅中国高速列车技术，而且新能源/绿色能源也在快速发展，我们利勃海尔就是其中的一部分。中国需要新技术来进一步推进 “走出去”的战略。中国是新能源应用的主要发展市场，利勃海尔可以通过我们在中国的团队参与这一发展。我们的合作将为社会和利勃海尔团队创造一个双赢的局面。

Question 2: Talking about technologies, which are the exciting innovations that you work on at Liebherr?

问题2:谈到技术，你在利勃海尔发现的最令人兴奋的是什么?

Coco Zhang Zhen: The Air Cycle System technology also called ACS technology is the first one, which I am deeply attracted to as an experienced Senior HVAC System Engineer. It only uses ambient air and no climate harming chemical refrigerants and is a simplified ecofriendly way of providing passenger comfort. Next to ACS technology, I am also interested in CO2 as an alternative cooling method for railway applications, thermal conditioning of e-mobility applications and future hydraulic applications. The most exciting thing about working at Liebherr is the living spirit of innovation within our team and the company as such. Liebherr always goes for the forefront in technology. As a technology-driver, the company is the right place for me. It inspires me, provides energy for my daily work and lets me feel passion for technology. Here I am not only doing adjustments of classical vapor cycle air conditioning unit designs; I am also a real designer and a creator for future applications.

张珍：空气循环系统技术又称ACS技术，这是第一个我作为资深暖通系统工程师所深深吸引的技术。由于它只对空气起作用，而且不影响气候对化学制冷剂的影响，所以对我来说，它就像魔法一样，是一种简化的环保友好的方式，能给乘客带来舒适。除了ACS技术，我还对二氧化碳作为铁路应用的替代冷却方法、新能源应用的热调节和未来的液压应用感兴趣。与利勃海尔家族合作最令人兴奋的是我们团队和公司内部的创新精神。利勃海尔总是走在技术的最前沿。 作为一个技术爱好者，利勃海尔是最适合我工作的企业。它让我在日常工作中充满灵感和能量，或者说让我更充满干劲。在这里，我不仅仅调整经典的蒸汽循环空调机组的设计，在利勃海尔工作，我也是一个真正的设计师和未来应用程序的创造者。

Question 3: What are the advantages of ACS technology? Do you see any critical issues?

问题3:对于ACS技术的优势，您如何评估已知的劣势?

Coco Zhang Zhen: Of course, ACS is the most advanced technology for refrigeration today. Therefore implementing this technology in China will evoke technological competition and increase the competitiveness of the Chinese railway industry as such. Liebherr has made a great effort to develop and apply ACS through the last decades and provides a mature technology to the market.

张珍:当然，ACS是当今最先进的制冷技术。因此，很必要在中国实施这一技术用以将加强技术竞争，提高中国铁路行业的竞争优势。在过去的几十年里，利勃海尔一直致力于ACS的开发和应用，为市场提供了成熟的技术。

Liebherr met also difficulties while promoting and applying this technology already widely in use in Aerospace within the railway industry, but never gave up. During the last year, our Chinese customers have been well informed about the ACS technology. They are aware about the disadvantage of a comparable lower COP (coefficient of performance) as well as the convincing advantages such as better overall life cycle costs and lower overall energy consumption under very high speed conditions. The so-called air drag effect of an ACS HVAC unit compared with a classical vapor cycle unit enables lower traction power for very-high-speed trains. We were able to see that the customers accept both disadvantage and advantages.

利勃海尔在推广和应用这项技术的过程中也遇到了困难，但从未放弃。正如我们常说的“天道酬勤”。在过去的一年里，我们的中国客户已经充分了解了ACS的技术。他们意识到相对较低的COP(制冷性能系数)的缺点，以及在非常高速的条件下更好的整体生命周期成本和更低的总体能源消耗等优点。与传统的蒸汽循环机组相比，ACS应用的空调机组的空气阻力效应能够降低超高速列车的牵引功率。我们的客户既接受缺点也接受优点。

Consequently, in order to open up a new and successful chapter in railway technology made in China the customers want to apply the new technology of ACS and asked us to provide a proposal for a Chinese high-speed train and for export projects such as trains operating in Europe.

因此，为了在中国制造的铁路技术上开辟一个新的成功篇章，他们想应用ACS的新技术，并要求我们为中国的高速列车和出口项目，比如在欧洲运行的列车提供建议。

Question 4: The last question is personal, what is your wish for the future?

问题4:最后一个问题是个人问题，你对未来有什么展望?

Coco Zhang Zhen: I would like to further develop my skills and the skills of the engineering team of Liebherr-Transportation Systems China. I wish to work with experienced and ambitious colleagues with passion on our future here in China and together with our global Liebherr team. I believe this will be a beautiful future. I know that Liebherr invests highly in new technologies, i.e. in research and development. For me as an experienced engineer, this is the core of competition. I wish to create with the company more new technologies and new products which enable for our people a better and green life.

张珍：我希望提升我的技能以及和利勃海尔中国运输系统工程团队一起进步，我希望与有经验、有抱负、对我们在中国的未来充满激情的同事一起工作，并与我们的全球利勃海尔团队一起工作。我相信这将是一个美好的未来。我相信利勃海尔作为一家家族企业，有社会责任感，在新技术研发上投入巨资。 对我这样有经验的工程师来说，这是竞争的核心。我希望用利勃海尔创造更多的新技术、新产品，让我们的人民过上更好的绿色生活。