Real-Time Evaluation of a Detailed Chemistry HCCI Engine Model Using a Tabulation Technique

2008 ◽  
Vol 180 (7) ◽  
pp. 1263-1277 ◽  
Author(s):  
Sebastian Mosbach ◽  
Ali M. Aldawood ◽  
Markus Kraft
Keyword(s):  
Real Time ◽  
Detailed Chemistry ◽  
Hcci Engine ◽  
Engine Model ◽  
Time Evaluation

scholarly journals Real-Time Emission Prediction with Detailed Chemistry under Transient Conditions for Hardware-in-the-Loop Simulations

Energies ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 261
Author(s):  
Mario Picerno ◽  
Sung-Yong Lee ◽  
Michal Pasternak ◽  
Reddy Siddareddy ◽  
Tim Franken ◽  
...  
Keyword(s):  
Real Time ◽  
Internal Combustion Engines ◽  
Best Practice ◽  
Measurement Data ◽  
Pollutant Emissions ◽  
Hardware In The Loop ◽  
Reactor Model ◽  
Detailed Chemistry ◽  
Engine Model ◽  
Tabulated Chemistry

The increasing requirements to further reduce pollutant emissions, particularly with regard to the upcoming Euro 7 (EU7) legislation, cause further technical and economic challenges for the development of internal combustion engines. All the emission reduction technologies lead to an increasing complexity not only of the hardware, but also of the control functions to be deployed in engine control units (ECUs). Virtualization has become a necessity in the development process in order to be able to handle the increasing complexity. The virtual development and calibration of ECUs using hardware-in-the-loop (HiL) systems with accurate engine models is an effective method to achieve cost and quality targets. In particular, the selection of the best-practice engine model to fulfil accuracy and time targets is essential to success. In this context, this paper presents a physically- and chemically-based stochastic reactor model (SRM) with tabulated chemistry for the prediction of engine raw emissions for real-time (RT) applications. First, an efficient approach for a time-optimal parametrization of the models in steady-state conditions is developed. The co-simulation of both engine model domains is then established via a functional mock-up interface (FMI) and deployed to a simulation platform. Finally, the proposed RT platform demonstrates its prediction and extrapolation capabilities in transient driving scenarios. A comparative evaluation with engine test dynamometer and vehicle measurement data from worldwide harmonized light vehicles test cycle (WLTC) and real driving emissions (RDE) tests depicts the accuracy of the platform in terms of fuel consumption (within 4% deviation in the WLTC cycle) as well as NOx and soot emissions (both within 20%).

Real-Time Evaluation of Site Characterization to Direct and Conclude Exploration

2001 ◽  
Vol 1755 (1) ◽  
pp. 51-59 ◽  
Author(s):  
Andrew J. Graettinger ◽  
Thanaporn Supriyasilp ◽  
S. Rocky Durrans
Keyword(s):  
Real Time ◽  
Site Characterization ◽  
Time Evaluation

HCCI Engine Modeling for Real-Time Implementation and Control Development

2007 ◽  
Vol 12 (6) ◽  
pp. 581-589 ◽  
Author(s):  
Nan Jia ◽  
Jihong Wang ◽  
Keith Nuttall ◽  
Jianlin Wei ◽  
Hongming Xu ◽  
...  
Keyword(s):  
Real Time ◽  
Hcci Engine ◽  
Engine Modeling ◽  
And Control

A Multi-Cylinder HCCI Engine Model for Control

2004 ◽  
Author(s):  
Jason S. Souder ◽  
Parag Mehresh ◽  
J. Karl Hedrick ◽  
Robert W. Dibble
Keyword(s):  
Design Process ◽  
Control Design ◽  
The Other ◽  
Variable Valve Timing ◽  
Valve Timing ◽  
Coupling Effects ◽  
Hcci Engine ◽  
Engine Model ◽  
Hcci Engines ◽  
Variable Valve

Homogeneous charge compression ignition (HCCI) engines are a promising engine technology due to their low emissions and high efficiencies. Controlling the combustion timing is one of the significant challenges to practical HCCI engine implementations. In a spark-ignited engine, the combustion timing is controlled by the spark timing. In a Diesel engine, the timing of the direct fuel injection controls the combustion timing. HCCI engines lack such direct in-cylinder mechanisms. Many actuation methods for affecting the combustion timing have been proposed. These include intake air heating, variable valve timing, variable compression ratios, and exhaust throttling. On a multi-cylinder engine, the combustion timing may have to be adjusted on each cylinder independently. However, the cylinders are coupled through the intake and exhaust manifolds. For some of the proposed actuation methods, affecting the combustion timing on one cylinder influences the combustion timing of the other cylinders. In order to implement one of these actuation methods on a multi-cylinder engine, the engine controller must account for the cylinder-to-cylinder coupling effects. A multi-cylinder HCCI engine model for use in the control design process is presented. The model is comprehensive enough to capture the cylinder-to-cylinder coupling effects, yet simple enough for the rapid simulations required by the control design process. Although the model could be used for controller synthesis, the model is most useful as a starting point for generating a reduced-order model, or as a plant model for evaluating potential controllers. Specifically, the model includes the dynamics for affecting the combustion timing through exhaust throttling. The model is readily applicable to many of the other actuation methods, such as variable valve timing. Experimental results validating the model are also presented.

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