Method for controlling a speed surge of an internal combustion engine of a moving vehicle during a gearbox ratio change
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United States of America Patent
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Mar 13, 2018
Grant Date -
Jan 14, 2016
app pub date -
Jul 2, 2015
filing date -
Jul 8, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
Method for controlling speed surge of an internal combustion engine of a moving vehicle during a ratio change of a manual gearbox, the vehicle including an engine control unit with a transient progressive torque reduction phase activated when the driver requests zero torque or when the foot is raised, the engine control unit: detects the raised foot and activates the transient progressive torque reduction phase; records engine speed and determines the gearbox ratio engaged when the foot is raised; determines, a maximum permissible engine speed (Nmax) which is greater than the recorded speed (Nlvp) of the raised foot, in accordance with the engine speed recorded and the engaged gearbox ratio; monitors the current speed (Nc) so that if Nc>Nmax, a stop is initiated with immediate effect of the transient progressive torque reduction phase, an if Nc≦Nmax, the transient progressive torque reduction phase is maintained.
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