| 摘要 |
A hybrid vehicle comprises a power source which is typically an internal combustion engine 18. This is started by an electric machine which may be a starter-generator 22. The method for starting the power source 18 comprises initiating a staff sequence when the vehicle is stationary if a brake pedal sensor 42 indicates brake release. The sequence includes driving the power source 18 at a target speed, determining a speed adjustment value based on an amount of vehicle acceleration requested by the driver and detected by a sensor 40, adjusting the target speed, and modifying output of the electrical machine 22 to maintain the target speed. Monitoring, determining and adjustment steps are repeated until the prime mover 18 is started. The electric machine 22 is typically coupled to the power source 18 via a clutch 24 and to a power transmission unit 28 having a plurality of ratios for driving a set of wheels 14. A dc voltage source 20 may supply a variable voltage to the electric machine 22 via an inverter 26 in order to maintain the target speed. |
