Drive torque control device, drive source unit and vehicle

A drive source unit of a vehicle that includes

• a brake mechanism for generating a braking torque, and
• a drive wheel for driving the vehicle,
• the drive source unit comprising:
• a drive source for generating a drive source torque,
• a drive torque control device that includes
• a target drive wheel torque calculator configured to calculate a target drive wheel torque for driving the drive wheel;
• a drive source torque control unit configured to
• estimate a drive source torque limit value based on a revolution speed of the drive source and a throttle opening, the drive source torque limit value including a maximum value and a minimum value of the drive source torque that is generatable by the drive source in a predetermined period of time from a current time,
• calculate a target drive source torque, which is a target value of the drive source torque to be generated in the predetermined period of time from the current time, based on the target drive wheel torque and the estimated drive source torque limit value, including
• upon determining that the maximum value in the estimated drive source torque limit value is smaller than the target drive wheel torque and that the minimum value in the estimated drive source torque limit value is larger than the target drive wheel torque, limiting the target drive wheel torque calculated at the target drive wheel torque calculator by the maximum value and the minimum value, respectively, and
• control the generation of the drive source torque by the drive source based on the target drive source torque;
• and
• a braking torque control unit configured to
• calculate a target braking torque, which is a target value of the braking torque to be generated by the brake mechanism in the predetermined period of time from the current time, based on the target drive wheel torque and the target drive source torque, and
• control the generation of the braking torque by the brake mechanism based on the target braking torque;
• an air inlet passage configured to supply air to the drive source;
• a throttle valve disposed in the air inlet passage and configured to change a cross-sectional area of the air inlet passage;
• and
• an air cleaner configured to allow passage of air into the air inlet passage.

A vehicle, comprising:

• a drive source configured to generate a drive source torque;
• a drive wheel configured to be driven by the drive source;
• a brake mechanism configured to apply braking torque to the drive wheel;
• and
• a drive torque control device including
• a target drive wheel torque calculator configured to calculate a target drive wheel torque for driving the drive wheel;
• a drive source torque control unit configured to
• estimate a drive source torque limit value based on a revolution speed of the drive source and a throttle opening, the drive source torque limit value including a maximum value and a minimum value of the drive source torque that is generatable by the drive source in a predetermined period of time from a current time,
• calculate a target drive source torque, which is a target value of the drive source torque to be generated in the predetermined period of time from the current time, based on the target drive wheel torque and the estimated drive source torque limit value, including
• upon determining that the maximum value in the estimated drive source torque limit value is smaller than the target drive wheel torque and that the minimum value in the estimated drive source torque limit value is larger than the target drive wheel torque, limiting the target drive wheel torque calculated at the target drive wheel torque calculator by the maximum value and the minimum value, respectively, and
• control the generation of the drive source torque by the drive source based on the target drive source torque;
• and
• a braking torque control unit configured to
• calculate a target braking torque, which is a target value of the braking torque to be generated by the brake mechanism in the predetermined period of time from the current time, based on the target drive wheel torque and the target drive source torque, and
• control the generation of the braking torque by the brake mechanism based on the target braking torque.