Modeling and Control of Diesel Engines Equipped with a Two-Stage Turbo-System

2008 ◽  
Author(s):  
Alexandros Plianos ◽  
Richard Stobart
Keyword(s):  
Diesel Engines ◽  
Two Stage ◽  
Modeling And Control ◽  
And Control

scholarly journals Modeling and Control of a Combined Heat and Power Unit with Two-Stage Bypass

Energies ◽  
2018 ◽  
Vol 11 (6) ◽  
pp. 1395 ◽  
Author(s):  
Yaokui Gao ◽  
Yong Hu ◽  
Deliang Zeng ◽  
Jizhen Liu ◽  
Feng Chen
Keyword(s):  
Power Unit ◽  
Combined Heat And Power ◽  
Two Stage ◽  
Modeling And Control ◽  
And Control

scholarly journals Down-speeding diesel engines with two-stage turbochargers: Analysis and control considerations

2020 ◽  
pp. 146808742097648
Author(s):  
Daryoush Mirza-Hekmati ◽  
William P Heath ◽  
Judith M Apsley ◽  
James R Forbes
Keyword(s):  
Diesel Engines ◽  
Two Stage ◽  
Transient Behaviour ◽  
Complex Interactions ◽  
Production Values ◽  
In Series ◽  
Variable Geometry Turbine ◽  
Path System ◽  
And Performance ◽  
And Control

Diesel engines continue to be used in truck applications, so reducing fuel use and hence CO2 emissions, is a priority. Single-stage turbocharged diesel engines are known to be fuel efficient under steady load at low speeds. However, the engine’s ability to track load transients becomes limited by emission constraints due to the rate of production values for smoke and the resulting higher nitrogen oxides (NO x). Modern air-path solutions including a variable geometry turbine (VGT) and high pressure exhaust gas recirculation (EGR) can be used to improve dynamic response without increasing NO x emissions, but lead to complex interactions that can be difficult to control. This paper develops a two-stage, in-series, air-path configuration, which improves the typical part-load performance at low engine-speeds through adjustments to the turbine expansion ratios. Better EGR rates (for NO x reduction) at low engine speeds can be achieved whilst the engine transient response is maintained. The air-path system is simulated using Ricardo Wave software and analysed for steady-state and transient behaviour in order to identify the relationships, constraints and performance measures for different operating regions that specify the controller requirements.

Modeling and control of a novel pneumatic two-stage piezoelectric-actuated valve

Mechatronics ◽  
2021 ◽  
Vol 75 ◽  
pp. 102529
Author(s):  
Tobias Glück ◽  
Dominik Büchl ◽  
Christian Krämer ◽  
Andreas Pfeffer ◽  
Andreas Risle ◽  
...  
Keyword(s):  
Two Stage ◽  
Modeling And Control ◽  
And Control
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