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Förslaget inkom 2009-03-09

Proposal for master thesis: DCT SW Architecture and HWIO

OBS! ANSÖKNINGSTIDEN FÖR DETTA EXJOBB HAR LÖPT UT.
Background
Dual Clutch Transmissions (DCT) are a technology that is heavily under development in the automotive area in order to increase the efficiency of the gearbox and thereby reduce CO2 emissions and still proved a good driveability to the vehicle costumer. The DCT is basically two parallel manual gearboxes with a control system. To do a shift you simply preselect a gear on the axle who’s clutch is open, and then just swap clutches. In figure 1 the DCT principle is described. Assume that you are driving on 1st gear, then K1 will be closed and K2 will be open. If you then want to do a 1-2 shift, you engage 2nd gear on the even axle and then start to open K1 at the same time as K2 is being unconnected.


Problem description
The objective with this thesis is to investigate the difference in controls architecture between an electro mechanical and electro hydraulic controlled transmission system. The main task is to investigate what parts of the HWIO (Hardware Input Output) that has to be changed as well as the affects on the software architecture. The starting point for this work is based on the current GM software architecture for different automated transmission, with a focus on Dual Clutch Transmission (DCT).


Education program: Z, M, E, D or F
Number of students: 2 students


Contact information: Ronnie Magnusson, tel 0520-84551, e-mail: ronnie.magnusson@se.gm.com
Lecture Jonas Fredriksson, tel. 031-772 1359, e-mail: jonas.fredriksson@chalmers.se


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