Method for starting a thermal engine of a hybrid vehicle

摘要

A method for starting an internal combustion thermal engine (5) of a hybrid vehicle (1) having: the thermal engine (5) provided with a drive shaft (6); at least one pair of driving wheels (3); a transmission (7), which transmits the motion from the thermal engine (5) to the driving wheels (3) and has a clutch (15); and an electric machine (8), which is mechanically connected to the clutch (7) downstream of the clutch (15), so that the clutch (15) is interposed between the electric machine (8) and the thermal engine (5); the starting method includes the steps of: opening the clutch (15) to separate the electric machine (8) from the thermal engine (5); separating the electric machine (8) from the driving wheels (3); making the electric machine (8) rotate by operating the electric machine (8) as a motor; and closing the clutch (15) when the electric machine (8) reaches a launch rotation speed.