相关实验视频

Updated: Jun 18, 2025

Automated, High-resolution Mobile Collection System for the Nitrogen Isotopic Analysis of NOx

Automated, High-resolution Mobile Collection System for the Nitrogen Isotopic Analysis of NOx

Published on: December 20, 2016

与执行器控制相关的NO_x和PN排放的评估

Norbert Biró^1,2, Dániel Szőllősi^1,2, Péter Kiss²

¹IBIDEN Hungary Kft. Technical Center, Exhaust System Evaluation, 2336 Dunavarsany, Hungary.

Sensors (Basel, Switzerland)

|July 27, 2024

概括

这项研究探讨了柴油发动机的废气排放,重点关注氧化 (NOx) 和颗粒物数量 (PNs). 研究结果揭示了颗粒物排放,NOx,通用轨道压力和废气循环之间的功能关系,用于更清洁的发动机战略.

科学领域:

汽车工程汽车工程
环境科学环境科学
燃烧科学燃烧科学

背景情况:

柴油发动机产生有害排放物,如氧化 (NOx) 和颗粒物数量 (PNs).
了解排放元件和发动机控制执行器之间的相互作用对于制定有效的减排策略至关重要.
现有的颗粒测量方法需要改进,以准确评估细颗粒.

研究的目的:

调查NOx,PN和柴油废气中的发动机控制参数之间的相互关系.
审查排放技术文献,并对粒子测量技术进行比较评估.
开发和实施创新的气溶制备原理和测试细胞控制程序.

主要方法:

在固定参数下在发动机车实验室进行实验.
进行了基于稀释比的颗粒测量方法的比较评估.
使用AVL PUMA Open TST和Visual Basic设计和实施了一个气溶制备单元和测试细胞控制程序.
评估了固定参数发动机动力表测试.

主要成果:

在10/23nm粒子排放,NOx,通用轨道压力和废气循环 (EGR) 水平之间建立了功能关系.
开发了用于凝结颗粒测量的创新型气溶制备原理.
创建了用于排放测试的功能测试单元控制程序.

结论:

这项研究增强了对柴油发动机排放动态的理解.
获得的见解可以为开发更高效,更环保的发动机控制策略提供信息.
开发的方法和发现有助于改进柴油排放的表征和控制.

关键词:

10和23nm粒子排放的粒子排放.欧洲农业集团 (EGR) 的成员.欧元 7 欧元 7 欧元 7 欧元氧化排放量排放量柴油汽车的使用情况.排放评估评估的排放情况轨道压力压力是指轨道的压力.

更多相关视频

Implementation of Portable Emissions Measurement Systems PEMS for the Real-driving Emissions RDE Regulation in Europe

Implementation of Portable Emissions Measurement Systems PEMS for the Real-driving Emissions RDE Regulation in Europe

Published on: December 4, 2016

Measuring Sub-23 Nanometer Real Driving Particle Number Emissions Using the Portable DownToTen Sampling System

Measuring Sub-23 Nanometer Real Driving Particle Number Emissions Using the Portable DownToTen Sampling System

Published on: May 22, 2020

相关概念视频

Nitric Oxide Signaling Pathway

Nitric Oxide Signaling Pathway

Nitric oxide (NO), an inorganic gas, acts as a potent second messenger in most animal and plant tissues. NO diffuses out of the cells that produce it and enters the neighboring cells to generate a downstream response. NO synthase (NOS) catalyzes NO production by the deamination of the amino acid arginine. There are three isoforms of NOS. Endothelial cells have endothelial NOS (eNOS), nerve and muscle cells have neuronal NOS (nNOS), and macrophages produce inducible NOS (iNOS) upon exposure...

Time-Domain Interpretation of PD Control

Time-Domain Interpretation of PD Control

Proportional-Derivative (PD) control is a widely used control method in various engineering systems to enhance stability and performance. In a system with only proportional control, common issues include high maximum overshoot and oscillation, observed in both the error signal and its rate of change. This behavior can be divided into three distinct phases: initial overshoot, subsequent undershoot, and gradual stabilization.
Consider the example of control of motor torque. Initially, a positive...

Control Systems: Applications

Control Systems: Applications

Electrical engineering plays a pivotal role in our daily lives, with control systems at the heart of many applications, from home appliances to sophisticated space shuttles. Control systems manage and regulate the behavior of devices and processes, ensuring they function safely, correctly, and efficiently.
In modern vehicles, control systems manage various functions to enhance performance and safety. The steering wheel and accelerator are primary inputs in a car's control system. The...

Open and closed-loop control systems

Open and closed-loop control systems

Control systems are foundational elements in automation and engineering. They are broadly categorized into open-loop and closed-loop systems. These classifications hinge on the presence or absence of feedback mechanisms, significantly influencing the system's performance, complexity, and application.
An open-loop control system operates without feedback from the output. It consists of two primary elements: the controller and the controlled process. The controller receives an input signal...

PD Controller: Design

PD Controller: Design

In automotive engineering, car suspension systems often employ Proportional Derivative (PD) controllers to enhance performance. PD controllers are utilized to adjust the damping force in response to road conditions. A controller, acting as an amplifier with a constant gain, demonstrates proportional control, with output directly mirroring input.
Designing a continuous-data controller requires selecting and linking components like adders and integrators, which are fundamental in Proportional,...

Control Systems

Control Systems

Control systems are everywhere in contemporary society, influencing diverse applications from aerospace to automated manufacturing. These systems can be found naturally within biological processes, such as blood sugar regulation and heart rate adjustment in response to stress, as well as in man-made systems like elevators and automated vehicles. A control system is essentially a network of subsystems and processes that collaboratively convert specific inputs into desired outputs.
At the heart...