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Agenda
Multinational Team
Market Research
Project Plan
Requirements
Functions
Start-Up
Requirement
Function
Logic
Physical
RFLP-Approach
Project plan results
Status quo CATIA
Lessons learned
Results
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The different backgrounds of the team members bring forward different ways
of thinking and solutions
Members of Team
Philip Wahl (Team Leader)
MSc. Mechanical Eng. (1st Semester)
Ali Hashemi Sohi (CATIA Manager)
MSc. Mechnical Eng. (5th Semester)
Jiayuan Li (CAD-Expert)
MSc. Information Technology
in Mechanical Eng. (1st Semester)
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• From 2008 to 2015: 20 million increment in sale of Start-
Stop-System*
• Demand for start-stop systems in new vehicles will reach
70–92% in Europe, North American and China
*Strategy Analytics Automotive Electronics Service
Overview market penetration of Start-Stop-Systems
Rising energy costs and climate change are forcing OEMs to produce more
efficient cars
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Europe: Flourishing market
• Globally leading market for Start-Stop vehicles
• High level of satisfaction
91% of Start-Stop vehicle owners will likely purchase such a vehicle again
78% purchased a Start-Stop vehicle for fuel savings.
United States: Potential market
• Consumers are looking for fuel-saving technologies.
97 percent say they’re ready for Start-Stop technology.
51 percent would choose a Start-Stop vehicle for its fuel cost savings
More than 30 percent would pay over $500 for a Start-Stop functionality
Overview market penetration of Start-Stop-Systems
Rising energy costs and climate change are forcing OEMs to produce more
efficient cars
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Project Plan
TMS is able to fulfill the complex task of a Start-Stop-System through a
thorough planning of the project
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Requirements
The different Stakeholder in the life cycle of the product create different
requirements to the product
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Functions of System
TMS is able to derive all relevant functions of the system due to a precise
requirement defintion
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Result Project Planning Start-Stop-System
Name Fix Costs Actual Costs Remaining Costs Costs Planed Costs Deviation Costs
Project Start/Stop System 0.00 € 150,020.00 € 49,408.12 € 199,428.12 € 0.00 € 199,428.12 €
0 Std.
100 Std.
200 Std.
300 Std.
400 Std.
500 Std.
600 Std.
700 Std.
800 Std.
Philip Wahl Jiayuan Li Ali Sohi Vu Hai
Ist-Arbeit Restarbeit
Name End Remaining
Work
Start
Philip Wahl Mon 31/03/14 160.98 Std. Mon 14/10/13
Jiayuan Li Mon 31/03/14 207.37 Std. Mon 14/10/13
Ali Sohi Mon 31/03/14 209 Std. Mon 14/10/13
Vu Hai Die 10/12/13 0 Std. Mon 14/10/13
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Logical model, realization of first idea
• No clear indication what logical structure is doing
• Divide logical structure into sub-groupes
• No Smart-Unit integrated in System
• No list of scenarios
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Dymola, Development of the logic model
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Dymola Stand Alone
• Dymola still represents the best way to show the working of the system
• Presentation of Smart Unit
• Presentation of Scenarios
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Simulating in Dymola
Stop-And-Go
Traffic
Pre-requisities
not fullfiled
Speed Below 4 Kmh
between stoppings
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Decision Tree
CSG
Internal External
Single
Clutch
Dual
Clutch
Advantages: Disadvantages:
1. Compact packaging 1. Higher Construction Cost
2. Lightweight Design 2. Harder to dismantle
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Physical Composition of CSG
The CSG consists of 3 parts:
1. Stator
2. Magnets
3. Rotor
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Status Quo CATIA
• The connection of the logical structure and CATIA has posed a great Deal of problems
• Entire libraries as well as single logical blocks are not known by CATIA
• Execution of Simulation is not intuitive
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Last Steps
• Economic and Cost Analysis
• Materials Choice for Parts of CSG
• Providing alternative solution regarding
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Lessons Learned
• Never Start a project without knowing what Software you are going to use
• It’s better to have too many licences than too few
• Clear structuring of deliverables for milestones early on
• Try to work in one System to avoid compatibility problems
