Hybrid vehicle and method of controlling the same
First Claim
1. A hybrid vehicle driven with power from a motor and an internal combustion engine, where the motor is capable of outputting power to a drive shaft linked with an axle, said hybrid vehicle comprising:
- a vehicle speed sensor that measures a vehicle speed;
a target vehicle speed setting module that sets a target vehicle speed for a constant speed drive, in response to a driver'"'"'s setting action; and
a drive control module that, in the case of no setting the target vehicle speed by said target vehicle speed setting module, sets a vehicle drive command value in response to the driver'"'"'s accelerator step-on action, refers to a non-linear setting map to set a vehicle driving force corresponding to the vehicle drive command value, and drives and controls the motor and the internal combustion engine to drive said hybrid vehicle with the setting of the vehicle driving force, while in the case of setting the target vehicle speed by said target vehicle speed setting module, said drive control module setting the vehicle drive command value, based on the vehicle speed measured by said vehicle speed sensor and the target vehicle speed, so as to drive said hybrid vehicle at the target vehicle speed, setting the vehicle driving force corresponding to the vehicle drive command value, in order to have a higher linearity than that of the vehicle driving force set by a non-linear portion of the non-linear setting map with respect to at least part of the vehicle drive command value equivalent to the non-linear portion, and driving and controlling the motor and the internal combustion engine to drive said hybrid vehicle with the setting of the vehicle driving force.
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Accused Products
Abstract
In a constant speed drive (in an auto cruise), the procedure of the invention executes proportional control to set an accelerator opening Acc corresponding to an observed vehicle speed and a target vehicle speed. When the accelerator opening Acc is less than a preset opening A2 included in a dead zone where a torque demand Tr* is kept equal to 0, the procedure corrects the accelerator opening Acc to have a corresponding torque demand Tr* included in a negative zone where the torque demand Tr* takes negative values and linearly increases. This arrangement heightens the linearity of the graph of the torque demand Tr* against the accelerator opening Acc in the constant speed drive, compared with the linearity in a standard drive.
24 Citations
13 Claims
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1. A hybrid vehicle driven with power from a motor and an internal combustion engine, where the motor is capable of outputting power to a drive shaft linked with an axle, said hybrid vehicle comprising:
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a vehicle speed sensor that measures a vehicle speed;
a target vehicle speed setting module that sets a target vehicle speed for a constant speed drive, in response to a driver'"'"'s setting action; and
a drive control module that, in the case of no setting the target vehicle speed by said target vehicle speed setting module, sets a vehicle drive command value in response to the driver'"'"'s accelerator step-on action, refers to a non-linear setting map to set a vehicle driving force corresponding to the vehicle drive command value, and drives and controls the motor and the internal combustion engine to drive said hybrid vehicle with the setting of the vehicle driving force, while in the case of setting the target vehicle speed by said target vehicle speed setting module, said drive control module setting the vehicle drive command value, based on the vehicle speed measured by said vehicle speed sensor and the target vehicle speed, so as to drive said hybrid vehicle at the target vehicle speed, setting the vehicle driving force corresponding to the vehicle drive command value, in order to have a higher linearity than that of the vehicle driving force set by a non-linear portion of the non-linear setting map with respect to at least part of the vehicle drive command value equivalent to the non-linear portion, and driving and controlling the motor and the internal combustion engine to drive said hybrid vehicle with the setting of the vehicle driving force. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A hybrid vehicle control method of controlling a hybrid vehicle, which is driven with power from a motor and an internal combustion engine, where the motor is capable of outputting power to a drive shaft linked with an axle, said hybrid vehicle control method comprising the steps of:
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(a) setting a vehicle drive command value, in response to a driver'"'"'s accelerator step-on action;
(b) setting a target vehicle speed for a constant speed drive in response to the driver'"'"'s setting action and setting the vehicle drive command value to drive said hybrid vehicle at the setting of the target vehicle speed;
(c) referring to a non-linear setting map to set a vehicle driving force corresponding to the vehicle drive command value, which is set in said step (a), while setting the vehicle driving force corresponding to the vehicle drive command value, which is set in said step (b), to have a higher linearity with respect to part of the vehicle drive command value corresponding to a non-linear portion of the non-linear setting map; and
(d) driving and controlling the motor and the internal combustion engine to drive said hybrid vehicle with the vehicle driving force set in said step (c). - View Dependent Claims (11, 12, 13)
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Specification