Heavy-Duty-, On- und Off-Highway-Motoren 2017: Effizienz und Emissionen 12. Internationale MTZ-Fachtagung 9783658210281, 9783658210298, 3658210281

Table of contents :
Vorwort
Inhalt
Autorenverzeichnis
1 Entwicklung des MAN Diesel und Turbo Motorenportfolios und zukünftige Herausforderungen
Quellenverzeichnis
2 Agenda 2030 – Mega-Trends im Bereich der maritimen Großmotoren
1 Einleitung
2 Entwicklungsschwerpunkte
3 Schweröl als Kraftstoff
4 Emissionen im HFO Betrieb
5 Mögliche Konzepte
5.1 Der Dieselmotor
5.2 Der Gasmotor
6 Kostenaspekte
7 Bewertung der Optionen
8 Zusammenfassung
9 Abkürzungen
10 Literatur
3 Off-road engine based on a present-day 15.3 l truck engine
Summary
1 DIFFERENCES BETWEEN ON- AND OFF-ROAD
2 DEVELOPMENT OBJECTIVES
3 ROBUST LIGHT AND COMPACT BUILD
4 RELIABILITY AND SERVICE LIFE
5 SERVICE COSTS AND COMMON PARTS
6 PERFORMANCE AND EMISSIONS
7 SUMMARY AND OUTLOOK
REFERENCES
4 A high-efficiency lean-burn mono-fuel heavy-duty natural gas engine for achieving Euro VI emissions legislation and beyond
1 Introduction
2 Well-to-wheel Emissions
3 Lean burn powertrain specification
3.1 Approach
3.2 Engine Technologies
3.2.1 Lean burn operation
3.2.2 Charge mixture preparation
3.2.3 Air management
3.3 Aftertreatment System Challenges
3.3.1 Thermal Management
3.3.2 Methane Results
3.3.3 SCR catalyst Selection
3.3.4 System Selection
3.4 Control Approach
3.4.1 MVEM and Kalman Filter
4 Discussion
5 Conclusions
6 Acknowledgements
7 References
5 Characterization of abnormal dual-fuel combustion
Introduction
Test Setup
Classification
End Gas Knock
Rapid Combustion
Pre-ignition
Cycle Analysis
End Gas Knock
Rapid Combustion
Pre-ignition
Conclusions
Nomenclature
References
6 LDM Compact – an efficient methodology for the development of combustion concepts for non-natural gas
Introduction
Development Methodology
Combustion concept pre-design
Single cylinder test setup
Testing procedure
Application Example – Flare Gases
Characterization of the gases
Combustion concept pre-design using simulation
Experimental development on the SCE
Summary
Acknowledgements
Nomenclature
References
7 Pilot injection strategies for medium-speed dual fuel engines
Abstract
1 Introduction
2 Research engine test bench
3 Experimental investigations and results
3.1 Variation of SOI / IMAP
3.2 Multiple injection variation
4 Numerical investigations und results
4.1 Reaction mechanism for dual-fuel combustion
4.2 Tabulation of reaction mechanism
4.3 CFD simulation
5 Summary
6 Acknowledgements
7 Abbreviations and Symbols
8 References
8 New MTU series 4000 rail engine fulfilling most ambitious emission regulation
1. Motivation
2. Technical Concept
Fuel injection and combustion
Controlled two stage turbocharging
NOx controlling system
3. Realization at MTU
4. Results and Summary
9 The new MAN 175D high‑speed engine – synthesis of commercial and medium‑speed engine development
Abstract
1 Introduction
2 Development of the high speed engine MAN 175D
2.1 General engine development process
2.2 Synthesis of the development process
2.3 High speed development process
3 Examples
3.1 Crankshaft
3.2 Connecting rod
4 Conclusion and Outlook
5 Bibliography
10 Non-visible smoke technology for extremely high-speed 4MW class 20FX diesel engine during ship transient operation
1 Overview of Niigata
2 Exhaust gas regulations for marine in Asia
3 Mechanisms design and issues of 16V20FX engine
3.1 Turbocharging system and its operating mechanism
3.2 Fuel injection system
4 Required technologies for black smoke reduction
4.1 Excess air ratio
4.2 Fuel spray characteristics
5 Verification result
6 Summary and Conclusion
11 Layout of highly-stressed injection and motor components
PRINCIPLE OF HYDRAULIC AUTOFRETTAGE
OPTIMISATION OF FORGED HIGH STRENGTH COMPONENTS
PREVIOUS APPROACHES ADOPTED TO ASSESS FATIGUE LIFE OF COMMON RAILS
NEW ACCOMPLISHMENTS QUALIFIED FOR FATIGUE LIFE ASSESSMENT OF COMMON RAILS
SUMMARY
REFERENCES
THANKS
12 Changing the heat treatment process as the key to success for Hatz Diesel
Durability assessment of aluminum cylinder head finally revealed residual stresses from heat treatment as the cause for cracks
13 Methodology for the development of variable valve drive systems from concept to series approval with focus on heavy-duty engines
Abstract
Sliding cam systems as variable valve drive
Modular development process and advantages of sliding cam systems
Design and functional testing of sliding cam systems
Multi body model for dynamic simulation
Pre-testing on tribology test bench
Real functional evaluation on motored cylinder head test bench
Durability testing and series approval
Summary and outlook
Reference
14 Investigation of the cylinder cut-out for medium-speed dual-fuel engines
Introduction
Description of the Thermodynamic and Fluid Mechanic Engine Model
Adjustment of the Combustion- and NO-Models
Optimization of the Dual Fuel Combustion- and NO-Models
Results of Engine Operation with Cylinder Cut-Out
Load Range and Load Depending Results
Results of a Selected Engine Operation Point
Summary
Outlook
Acknowledgements
References
15 Upgrading EU Stage III B engines to achieve EU Stage IV
Introduction
Emission Limits
Original Stage III B Application
EU Stage IV Aftertreatment Solution
System Integration and Signal Communication
New Exhaust Aftertreatment Design
Certification
Emissions
NOx Control Diagnostic (NCD)
Defreezing Test
AdBlue® Quality
Summary
16 Oil system optimization of HD diesel engines
1 Introduction and state of the art
1.1 Current structure of the HD diesel oil circuit
1.2 Fuel savings potential through variability
1.3 Investigation approach of the oil circuit at MAHLE
1.4 Determining the overall power requirements for the oil circuit with direct measurement
2 Minimum demand for engine oil mass flow
2.1 Determining the minimum oil demand using simulations
2.2 Engine measurement at minimum demand, proof of potential limit
2.3 Minimum requirement for piston cooling
2.4 Minimum requirement for the base engine
2.5 Minimum pressures and expected potential
3 MAHLE variable oil pump
3.1 Construction of the MAHLE pendulum-slider oil pump for commercial vehicle applications
3.2 Measurements on the component test bench
3.3 Testing the variable volume flow oil pump on the engine
3.4 Demonstration of realized fuel consumption potential
4 Fuel consumption saving potential with other oil system topologies
4.1 Provision of additional pressure levels
4.2 Implementing two temperature levels as a measure for optimizing oil service life
5 Summary and outlook
6 Literature
17 Rankine cycle – from thermodynamic equation to road test
Introduction
Technology presentation
The Rankine cycle and its usages
Challenges of on-road applications
Project context
Faurecia background on Rankine and system
OEM partner for the demotruck
Starting position
Faurecia baseline expertise
Truck description
Simulation
Preliminary Architecture choice
Expander partner for the demotruck
Expander definition
Dynamic truck model
Dynamic of the Rankine model
Architecture choice and sizing
From simulation to real-life testing
Bench assembly
Running manual and control law setup
Expander mechanical connexion
Test cycle results
Integration
3D integration and truck modification
Demotruck prototypes
Roller bench test
Performance and forecast
Conclusion
Planning and system approach
Rankine future
18 Tagungsbericht
12. Internationale MTZ-Fachtagung Heavy-Duty-, On- und Off-Highway-Motoren
HYBRIDISIERUNG ALS KOMMENDE HERAUSFORDERUNG
IMMER SCHÄRFERE EMISSIONSGRENZWERTE