To optimize a shift transient during clutch engagement (third phase of a gearshift) it is fundamental to define the engine velocity reference and the more appropriate instant at which to begin the clutch engagement itself. An analytical procedure to calculate the engine velocity reference value during the third phase of a gearshift and the moment when to begin the clutch engagement is presented. Simulation results obtained considering upshift and downshift with engine torque either applied or not are presented. The analytical solution presented permits to tune the third phase of the gearshift in an easier way than previous strategy based on look-up tables.
Engine Control Strategy to Optimize a Shift Transient During Clutch Engagement
Sae Technical Papers
SAE 2001 World Congress ; 2001
2001-03-05
Conference paper
English
Engine control strategy to optimize a shift transient during clutch engagement
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