Energy efficiency analysis of multi-event injections

多事件喷射的能效分析

• 批准号: 43814-2007
• 负责人: Reader, Graham
• 金额: $ 1.46万
• 依托单位: University of Windsor
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2007
• 资助国家: 加拿大
• 起止时间: 2007-01-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=366285
• 关键词: Energy; efficiency; analysis; multi; event

To meet the current and future emissions standards for Diesel Engines it is necessary to able to electonically control in an holistic manner the operation of the engine, the methods of getting the fuel into the engine (injection techniques) and any exhaust aftertreatment device. As part of this overall requirement this research will concentrate on how the methods of fuelling and fuelling control effects the engine performance and emissions. The technique of multi-pulse injection has been identified as an effective way to reduce nitrogen oxides (NOx) and particulate matter (PM) emissions. However, the heat release rates associated with low NOx and low PM requirments cause departures from engine conditions which normally maximize the energy efficiency of the combustion process. There is a need to balance in an effective manner emissions with energy-use efficency. Thus, the main aim will be to develop an analytic model to assess the performance of multi-pulse fuel injection in modern diesel engines. To calibrate and validate this model the transient thermal and combustion characteristics of the engine cycle will be examined empirically on a prototype common-rail diesel engine controlled by a sophisticated a field programmable gate array (FPGA) based system integrated with an embedded controller and a sophisticated programmable power drive. The detailed temporal profiles of cylinder gas pressure, temperature, and composition will be measured with cylinder pressure transducers, fast-response temperature sensors, and in-cylinder direct gas sampling analyzers. In this way it will be possible to investigate the fundamental trade-offs of the energy efficiency versus the fuel injection schedule when ultra low emission combustion is targeted.

为了满足柴油发动机当前和未来的排放标准，有必要能够以整体方式电子控制发动机的操作、将燃料引入发动机的方法（喷射技术）和任何排气后处理装置。作为这一总体要求的一部分，这项研究将集中在如何加油和加油控制的方法影响发动机的性能和排放。多脉冲喷射技术被认为是降低氮氧化物（NOx）和颗粒物（PM）排放的有效方法。然而，与低NOx和低PM要求相关的放热速率导致偏离通常使燃烧过程的能量效率最大化的发动机条件。有必要以有效的方式平衡排放与能源使用效率。因此，主要目的将是开发一个分析模型来评估多脉冲燃料喷射在现代柴油机中的性能。为了校准和验证这个模型的瞬态热和燃烧特性的发动机循环将被检查经验上的一个复杂的现场可编程门阵列（FPGA）为基础的系统集成了嵌入式控制器和一个复杂的可编程电源驱动器控制的原型共轨柴油发动机。将使用气缸压力传感器、快速响应温度传感器和气缸内直接气体取样分析仪测量气缸气体压力、温度和成分的详细时间分布。以这种方式，当超低排放燃烧成为目标时，将有可能研究能量效率与燃料喷射时间表的基本权衡。