Vehicle driving force control apparatus and driving force control method
AssigneeToyota Jidosha Kabushiki Kaisha
InventorHideki Takamatsu
Life of this patent
Estimating the term…
Abstract
When a speed ratio, which is the ratio of the turbine speed to the engine speed, is equal to or less than 1, a driving torque converter dynamic characteristic model is used which is set based on a driving torque converter static characteristic in which the torque ratio decreases to 1 with an increase of the speed ratio. When the speed ratio is greater than 1, a driven torque converter dynamic characteristic model is used which is set based on a driven torque converter static characteristic in which the torque ratio is 1 regardless of the speed ratio.
Claims13
A driving force control apparatus of a vehicle that transmits output of a drive source to a driving wheel via a fluid coupling, comprising:
- a setting portion that sets a target driving force generated in the vehicle via the driving wheel;
- a determining portion which determines that a characteristic of the fluid coupling is a first characteristic when, in a relationship between an input shaft rotation and an output shaft rotation of the fluid coupling, the input shaft rotation is leading, and determines that the characteristic of the fluid coupling is a second characteristic when the output shaft rotation is leading;
- and
- a control portion that controls the drive source based on the target driving force and the characteristic of the fluid coupling.
A driving force control apparatus of a vehicle that transmits output of a drive source to a driving wheel via a fluid coupling, comprising:
- setting means for setting a target driving force generated in the vehicle via the driving wheel;
- determining means for determining that a characteristic of the fluid coupling is a first characteristic when, in a relationship between an input shaft rotation and an output shaft rotation of the fluid coupling, the input shaft rotation is leading, and determining that the characteristic of the fluid coupling is a second characteristic when the output shaft rotation is leading;
- and
- controlling means for controlling the drive source based on the target driving force and the characteristic of the fluid coupling.
A driving force control method of a vehicle that transmits output of a drive source to a driving wheel via a fluid coupling, comprising:
- setting a target driving force generated in the vehicle via the driving wheel;
- determining that a characteristic of the fluid coupling is a first characteristic when, in a relationship between an input shaft rotation and an output shaft rotation of the fluid coupling, the input shaft rotation is leading, and determining that the characteristic of the fluid coupling is a second characteristic when the output shaft rotation is leading;
- and
- controlling the drive source based on the target driving force and the characteristic of the fluid coupling.
Dependencies are inferred from the claim text.