Transcript Working at BMW in… Vorentwicklung Hauptgetriebe Pre-development of Main Transmissions August 7th, 2008

Automotive
Mechatronics
Munich,
Germany
07.08.2008
Page 1
Working at BMW in…
Vorentwicklung Hauptgetriebe
Pre-development of Main Transmissions
August 7th, 2008
By Chittayong (Jao) Surakitbanharn
Automotive
Mechatronics
Munich,
Germany
07.08.2008
Page 2
Working at BMW…
Presentation Outline
–Background information about me
–Who I am
–What I do now
–How I got this internship
–What Vorentwicklung Hauptgetriebe does
–Transmission technologies
–Automatic
–Automated manual (SMG, etc.)
–Dual Clutch (DKG)
–My job description
–Working in a Bavarian Company
–Questions
Automotive
Mechantronics
Munich Germany
07.08.2008
Page 3
Background Information
Automotive
Mechantronics
Munich Germany
07.08.2008
Page 4
Background Information
Automotive
Mechantronics
Munich Germany
07.08.2008
Page 5
Vorentwicklung Hauptgetriebe
Automatic Transmission
Features
Disadvantages
– Torque converter
– Planetary gears
– Ride comfort
– No driver input requried
– Power loss through torque
converter
– Higher fuel consumption in
order to run hydraulic system
– Constant pressure required in
order to stay in gear
ZF 6HP26
Automotive
Mechantronics
Munich Germany
07.08.2008
Page 6
Vorentwicklung Hauptgetriebe
Automated Manual Transmission
Features
– Hydraulically actuated manual
transmission
– No clutch pedal required
– Can be driven similar to automatic
– Faster than manual transmissions
– BMW currently offers SMG in E46
M3, E60 M5, E60 550
Disadvantages
– Ride comfort at low speeds
Pictures of
SMG from
BMW AG
Automotive
Mechantronics
Munich Germany
07.08.2008
Page 7
Vorentwicklung Hauptgetriebe
New Technologies
– Replacing Torque converter with clutch while maintaining
planetary gears
– Replacing hydraulic actuation system with
electromechanical actuation system
– Cost effective
– Replacing clutch pack shift elements with geometrical shift
elements
Automotive
Mechantronics
Munich Germany
07.08.2008
Page 8
Vorentwicklung Hauptgetriebe
Double Clutch Transmission (DCT)
Features
– Two parallel shafts containing
different gears
–Gears can be preselected
– Less time of power
disengagement when shifting
– In E92 M3
Disadvantages
– High manufacturing cost
Automotive
Mechantronics
Munich Germany
07.08.2008
Page 9
My job description
Working under the test engineer
–
Physical testing at track/on test bench
Automotive
Mechantronics
Munich Germany
07.08.2008
Page 10
My job description
Working under the test engineer
–
Physical testing at track/on test bench
Automotive
Mechantronics
Munich Germany
07.08.2008
Page 11
My job description
Working under the test engineer
–
Logistics between development, suppliers, and plant
Automotive
Mechantronics
Munich Germany
07.08.2008
Page 12
My job description
Working under the test engineer
–
Researching new technologies
–
Patent research
–
Documentation Projects
–
Creating simultations; working with Simulink
–
Most important part of the job...
Automotive
Mechantronics
Munich Germany
07.08.2008
Page 13
In Conclusion
–
How has Cal Poly applied to my life...?