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1997年8月,LOrange公司研制出世界上第一套电子控制的共轨式燃油喷射系统。该系统在MTU/DDC4000系列柴油机上的应用使该柴油机取得极大的成功。该喷射系统使燃烧系统面貌一新,在燃油效率、排放和烟度以及输出功率和扭矩等方面均有极大的改进。柴油机发展的前一百年的特点大体上只体现在功率输出和燃油效率方面的改进。将来的一个主要任务将是满足排放法规的要求,这些要求将愈来愈苛刻,差不多每3至7年变更一次。对于高压油泵,存在一种很大的潜力,可以仅用一种型号或一种系列的油泵来满足几种发动机机型的需要,这可以使费用保持在可接受的水平。这些基于平台设计的油泵可导致柴油机在配件供应、经济性以及运行性能方面的改进。LOrange公司在2002年为20缸V型长行程MTU4000系列柴油机研制的直列式高压泵就是带锐边的柱塞泵技术的第一个实例,本文将对此详细介绍。令人瞩目的是,同一型号的直列式泵可适用于整个系列的柴油机,从4缸100kW/缸(采用一台泵)到18缸1200kW/缸的V型机(采用4台泵),使柴油机结构显著简化。泵的可用转速由800r/min到3150r/min,采用由柴油机曲轴驱动的齿轮,选用适当的齿轮比,从而克服了泵转速对各种柴油机标定转速的依赖性。目前该泵有2种柴油型的:一种是4柱塞型的;另一种是2柱塞型的,供油量分别为32L/min和16L/min。这些基于平台设计的油泵的普遍选择将为开发人员提供这样的机会:使喷射系统和燃烧系统的开发更集中在发动机性能、应用和系统的集成化上,而不只是停留在新的零部件的开发上。
In August 1997, LOrange developed the world’s first electronically controlled common rail fuel injection system. The application of this system on the MTU / DDC4000 series diesel engine made the diesel engine very successful. The injection system brings a new look to the combustion system with dramatic improvements in fuel efficiency, emissions and smoke, as well as output power and torque. The first hundred years of diesel engine development have generally been characterized only by improvements in power output and fuel efficiency. One of the major future tasks will be to meet the emission regulations, which will become increasingly demanding and will change almost every 3 to 7 years. For high-pressure pumps, there is a great potential for meeting the needs of several engine models with just one model or series of pumps, which can keep costs at an acceptable level. These platform-based design of the pump can lead to diesel engine parts supply, economy and operating performance improvements. LOrange’s in-line high-pressure pump developed for the 20-cylinder long-stroke MTU 4000 Series diesel engine in 2002 is the first example of a plunger pump technology with a sharp edge, as detailed in this article. What is remarkable is that the same type of in-line pump can be applied to the entire series of diesel engines, from 4-cylinder 100kW / cylinder (with one pump) to 18-cylinder 1200kW / cylinder V-type machine (with 4 pumps) Diesel engine structure is significantly simplified. Available pump speed from 800r / min to 3150r / min, the use of the crankshaft driven by the diesel gear, use the appropriate gear ratio, thus overcoming the pump speed of various diesel engine calibration speed dependence. Currently, the pump has two types of diesel: one is a 4-plunger type and the other is a 2-plunger type with a fuel supply of 32 L / min and 16 L / min, respectively. The universal choice of these platform-based pumps will provide developers with the opportunity to focus their development of injection and combustion systems more on the integration of engine performance, applications and systems rather than just staying on new components Development.