Gm Global Technolgoy Operations, Inc.

Tobias Berndtson

Xuefeng Tim Tao

David W Wright

Michael A Kropinski

Kenneth K Lang

Colin Hultengren

Hongyu Wang

Staffan Lyberg

Johan Larsson

Manmeet Mavi

Sriram Venkataramanan

A vehicle simulation system includes a first simulation model that when executed simulates a software ring along with other software of a vehicle module. The vehicle simulation system further includes a second simulation model of the software ring. A bypass switch that has a first state and a second state. A bypass switching module switches the bypass switch between the first simulation model and the second simulation model based on a bypass signal and a ring enabling signal. A simulation control module executes code of a vehicle simulation model including software in-the-loop (SIL) testing of a selected one of the first simulation model and the second simulation model based on state of the bypass switch.

Vehicle simulation system with software-in-the-loop bypass control

A dual clutch transmission (DCT) control module includes a pressure determination module that determines a measured pre-charge pressure of an accumulator. A motor control module determines an actual pre-charge pressure based on the measured pre-charge pressure, stored previous pre-charge pressures, and ambient temperature, and controls a pump motor based on the actual pre-charge pressure.

Accumulator working volume management and adaptation

Growing community of inventors

Grästorp, Sweden

Tobias Berndtson