Method for controlling gear shifting in a hybrid driveline by use of an electric machine
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United States of America Patent
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May 8, 2018
Issued Date -
N/A
app pub date -
Nov 13, 2014
filing date -
Nov 21, 2013
priority date (Note) -
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Abstract
A method to control a hybrid powertrain (2) in a vehicle, the powertrain including a combustion engine (3), an electric machine (4) and a gearbox (6) with an input shaft (10) and output shaft (18), wherein the combustion engine (3) and the electric machine (4) are connected to the input shaft (10). The method includes the steps of controlling the gearbox (6) to a neutral position; controlling the speed of the electric machine (4) to a predetermined speed, corresponding to a target speed for the input shaft (10) according to the next selected gear; engaging a gear in the gearbox (6); controlling the electric machine (4), so that the electric machine (4) accelerates or decelerates depending on a requested driving torque for the vehicle (1); detecting when a control signal for the electric machine (4) corresponds to a predetermined signal value; and controlling the electric machine (4) to the requested driving torque. Also, a hybrid powertrain and a vehicle (1), and a computer program (P) and a computer program product for performing the method are disclosed.
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