Fca US LLC

Naresh Sathyamoorthy

Nadirsh Patel

Zachary L Tuller

Indrasen Karogal

Allwyn D Bhakare

Andy M Lee

Paolo Olivieri

Alessandro Lelli

Pier Luca Di Gristina

Giuseppe Corallo

Gaurav S Sadekar

Dario Morina

Federico De Bosio

A hybrid electric vehicle includes: a dual clutch transmission having first and second sub-transmissions having respective first and second clutches and first and second synchronizers, and an electric motor rotationally coupled to the second sub-transmission for common rotation therewith; and a control system including a hybrid controller and a transmission controller with the HCP being a supervisory controller, wherein the control system is configured to execute an engine clutch start procedure using the electric motor, and wherein the procedure eliminates hard vehicle speed limits, provides smooth wheel torque during the procedure, and increases a number of transmission gears available for the procedure.

Hybrid vehicle engine start using clutches of dual clutch transmission

Speed control techniques include, based on a set of target speed inputs indicative a target speed for an electric motor, determining a set of profiling inputs including (i) the target speed and (ii) a set of desired acceleration calibrations, performing jerk-based profiling based on the set of profiling inputs to determine at least one of an open-loop acceleration command and a profiled target speed, determining a closed-loop torque adjustment based on the profiled target speed and a measured speed of the electric motor, determining an electric motor torque command based on the open-loop acceleration command and the closed-loop torque adjustment, and controlling the electric motor based on the respective electric motor torque command to improve vehicle responsiveness in reaching the target speed.

Use of triangular numbers in calculation of jerk limited speed profile for determination of target speeds and feed-forward torque for speed controller

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Chennai, India

Naresh Sathyamoorthy