Control of advanced combustion modes in internal combustion engines and integration with exhaust gas aftertreatment

内燃机先进燃烧模式的控制以及与废气后处理的集成

基本信息

批准号：
RGPIN-2016-04646
负责人：
Koch, Charles
金额：
$ 2.77万
依托单位：
University of Alberta
依托单位国家：
加拿大
项目类别：
Discovery Grants Program - Individual
财政年份：
2020
资助国家：
加拿大
起止时间：
2020-01-01 至 2021-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=709414
关键词：
Control advanced combustion modes internal

项目摘要

Typical of many western countries, the transportation sector in Canada produces about 30% of Green House Gases (GHG) and exhaust emissions such as NOx and particulates which adversely affect public health in large urban centers. This has led to worldwide stringent future exhaust emission regulations and these will require that major new technologies be developed. For example, in the United States, stringent fuel economy standards for 2016 that have been introduced require combined car and light duty truck fleet-wide fuel economy to improve from 35.5mpg in Model Year 2016 to 54.5mpg in 2025. This is directly relevant to Canada as the automotive sector is transnational. The USA Environmental Protection Agency (EPA) projects: “... EPA expects that the majority of improvements will come from advancements in internal combustion engines...”. To comply with emission regulations the internal combustion engine requires a complex exhaust gas aftertreatment system with integrated engine control. Recently, advanced combustion modes such as Low Temperature Combustion (LTC) have emerged as a very promising major new technology to significantly reduce fuel consumption and harmful emissions such as NOx and particulates from internal combustion engines. LTC modes can be described to operate between conventional spark ignition gasoline and direct injection Diesel engines. However, to extract the potential of these complex LTC modes, a fundamental understanding of combustion and control strategies is still needed. Due to the stringent emission regulations, these LTC modes must be combined with exhaust gas aftertreatment which requires a detailed understanding of the complete system to realize an integrated control system. The objective of this research is to understand and control the LTC modes such as Homogeneous Charge Compression Ignition (HCCI) coupled with exhaust gas aftertreatment with the goal to reduce greenhouse gases, NOx and particulate emissions. To do this a combined modeling and experimental approach will be used. Complex simulation models based on combustion chemistry will be used to predict HCCI ignition timing. Using model order reduction the complex model will be simplified to a control oriented model that is suitable for control design. Ignition timing control will then be designed based on the simpler model. All models will be parameterized and validated by experiment in the engine lab. The ignition timing control will also be tested on the engine. The experimental testing is also used to improve the simulation models and the control. Since HCCI can burn a variety of fuels, this process will be performed for a variety of fuels. This research has the potential to significantly improve fuel economy and reduce harmful emissions from cars and trucks improving urban air quality while maintaining the mobility and economic requirements of Canadians.

在许多西方国家中，加拿大的运输部门典型地生产了约30％的温室气体（GHG）和排气排放，例如NOX和组件，这些零件和组件会对大型城市中心的公共卫生产生不利影响。这导致了全球严格的未来排气排放法规，这些规定将要求开发主要的新技术。例如，在美国，已经引入了严格的2016年燃油经济性标准，这些燃油经济性标准需要合并的汽车和轻型卡车机队范围内的燃油经济性，从2016年型号年度的35.5mpg提高到2025年的54.5mpg。这与加拿大直接相关，因为自动部门是跨国公司的。美国环境保护署（EPA）项目：“ ... EPA预计大多数改进将来自内部组合引擎的进步……”。为了遵守排放法规，内部组合发动机需要具有集成发动机控制的复杂的废气后处理后。最近，低温燃烧（LTC）等高级组合模式已成为一种非常有希望的新技术，可显着降低燃油消耗和有害排放，例如NOX和内部组合引擎的组件。 LTC模式可以描述为在常规的火花点火汽油和直接注射柴油发动机之间运行。但是，为了提取这些复杂的LTC模式的潜力，仍然需要对燃烧和控制策略的基本理解。由于严格的排放法规，这些LTC模式必须与废气后的处理后结合使用，这需要对完整系统的详细了解才能实现集成的控制系统。这项研究的目的是了解和控制LTC模式，例如均质电荷压缩点火（HCCI）以及废气后处理后，以减少温室气体，NOX和特定排放的目标。为此，将使用一种组合的建模和实验方法。基于燃烧化学的复杂仿真模型将用于预测HCCI点火时间。使用模型订单减少，复杂模型将简化为适合控制设计的面向控制模型。然后将基于更简单的模型设计点火正时控制。所有模型将通过引擎实验室中的实验进行参数化和验证。点火正时控制也将在发动机上进行测试。实验测试还用于改善模拟模型和对照。由于HCCI可以燃烧各种燃料，因此将对各种燃料进行此过程。这项研究有可能显着改善燃油经济性，并减少汽车和卡车的有害排放，从而改善城市空气质量，同时维持加拿大人的流动性和经济要求。