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논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2000.7
- 수록면
- 79 - 102 (24page)
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초록· 키워드
오류제보하기
The main intention of the lecture is to present a method for vehicle concept analysis as well as for new powertrain layout meant as a common optimisation of engine and drive train parameters. Furthermore the advantages and benefits using simulation techniques in the development of hybrid powertrains will be highlighted.
After an introduction, an idealised computer aided development process for the entire powertrain is presented. It shows how state-of-the-art simulation techniques can contribute to a comprehensive, continuous development process, which is based upon off-line simulation, hardware in the loop simulation, the utilisation of modern test bed technology up to final vehicle calibration. The ultimate goal of this "simulation supported development process" is to optimise the entire powertrain, which has been, up to now, practically been designed from experience and mainly in experiments. Further to optimise the interaction between the individual components soon enough and to minimise prototype variations which is especially important with hybrid vehicles as there are theoretically so many possibilities to design a hybrid powertrain. In this context, the presentation does not focus on the development of such powertrain components but rather their design, assessment and parameterisation as well as the harmonisation of the single components. Especially with hybrids, the exact knowledge of the "mission" of the vehicle, the expected driving profile and the expected end-user related problems is necessary. Particular importance is also attached to powertrain controls i.e. the link between electronic engine, transmission and vehicle control units.
Then more in detail some simulation modules such as engine models and transmission models are presented, which are essential modules for the development process mentioned above.
After having introduced process and the necessary off-line and real-time simulation models of powertrain components, some basic consideration about hybrid powertrains are presented. Two hybrid examples are chosen to support the necessity for the use of simulation.
In the first example the development of the AVL Universal Hybrid system is highlighted which has been simulation supported throughout the whole project period. The second expample shows results of the simulation supported analysis of the well known Toyota Prius hybrid vehicle. Based upon the described development methodology, it is evident that optimum development results can only be achieved by considering the total powertrain system. Especially for the high complex powertrain systems of hybrid vehicles the application of the new, simulation supported development processes is strongly recommended. The tools for it are available at AVL and are being continuously developed further. However the goal is to reduce development time and costs by the consequent realization of this presented process.
After an introduction, an idealised computer aided development process for the entire powertrain is presented. It shows how state-of-the-art simulation techniques can contribute to a comprehensive, continuous development process, which is based upon off-line simulation, hardware in the loop simulation, the utilisation of modern test bed technology up to final vehicle calibration. The ultimate goal of this "simulation supported development process" is to optimise the entire powertrain, which has been, up to now, practically been designed from experience and mainly in experiments. Further to optimise the interaction between the individual components soon enough and to minimise prototype variations which is especially important with hybrid vehicles as there are theoretically so many possibilities to design a hybrid powertrain. In this context, the presentation does not focus on the development of such powertrain components but rather their design, assessment and parameterisation as well as the harmonisation of the single components. Especially with hybrids, the exact knowledge of the "mission" of the vehicle, the expected driving profile and the expected end-user related problems is necessary. Particular importance is also attached to powertrain controls i.e. the link between electronic engine, transmission and vehicle control units.
Then more in detail some simulation modules such as engine models and transmission models are presented, which are essential modules for the development process mentioned above.
After having introduced process and the necessary off-line and real-time simulation models of powertrain components, some basic consideration about hybrid powertrains are presented. Two hybrid examples are chosen to support the necessity for the use of simulation.
In the first example the development of the AVL Universal Hybrid system is highlighted which has been simulation supported throughout the whole project period. The second expample shows results of the simulation supported analysis of the well known Toyota Prius hybrid vehicle. Based upon the described development methodology, it is evident that optimum development results can only be achieved by considering the total powertrain system. Especially for the high complex powertrain systems of hybrid vehicles the application of the new, simulation supported development processes is strongly recommended. The tools for it are available at AVL and are being continuously developed further. However the goal is to reduce development time and costs by the consequent realization of this presented process.
목차
Abstract
Vehicle Solutions for the Future
Systematic Vehicle Development
SSDD-Development Process
Steps of modern Drivetrain Development
Step1: Vehicle“Offline“ Simulations
Step1: Models in vehicle simulation
Step2: “Online“ Simulation / Lab Vehicles
“Hardware-in-the-Loop“(HIL) SIMULATION
Modern Vehicle Drive-Train Controller Architecture
Step 1&2: Simulation models for ic-engines
Engine Models
Diesel-Engine Model
Engine Model: Thermodynamics
Cross linking of simulation tools and engine models
Simulation models for transmissions
Step 3: ECU/TCU Pre-Calibration on the Drive Train Test Bed
Step 3: Testbed “Hardware-in-the-Loop“
Simulation Split: Software and Hardware
Step 4: Vehicle Application/Calibration
Powertrain Development
Hybrid Vehicles: The future !?
Hybrid powertrain: basic considerations
Series Hybrid
Chain of Efficiences-Series Hybrid
Parallel Hybrid System
Hybrid Potential for Fuel Consumption Savings
Energy Management
Energy Consumption Dependent on Operation Strategy
Energy Consumption and Emissions Dependent on Operation Strategy
Simulation Example(off-line)
Universal Hybrid System
UHS Planetary CVT
Universal-Hybrid-System
UHS-Simulink Block Diagram
UHS Results
UHS-Functional Prototype
Simulation Example (off-line)
Toyota Hybrid System “Prius“
Toyota-Hybrid-System THS “Prius“
THS: Efficiencies
THS: Total Efficiency Calculation
Electro-Mechanical CVT‘s THS Energy-Flow
Summary and conclusion(1)
Summary and conclusions(2)
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