Vehicle control apparatus
A vehicle control apparatus including a torque transmission detecting part detecting a torque transmission state switched by a torque transmission switching part and a microprocessor configured to perform setting a target speed of an internal combustion engine in accordance with the torque transmission state detected by the torque transmission detecting part. The microprocessor is configured to perform the setting including increasing the target speed when a switch to the off-gear state is detected by the torque transmission detecting part after a switch instruction to an off-gear state the first is output by a first switch instruction part, while not increasing the target speed even when the switch to the off-gear state is detected by the torque transmission detecting part after a switch instruction to a reverse in-gear state or forward in-gear state is output by the second switch instruction part.
1. An apparatus configured to control a vehicle including an internal combustion engine and a transmission having a forward gear and a reverse gear, comprising:
a torque transmission switching part configured to switch a torque transmission state to one of a forward in-gear state in which a torque output from the internal combustion engine is transmitted to an output shaft of the transmission through the forward gear, a reverse in-gear state in which the torque output from the internal combustion engine is transmitted to the output shaft of the transmission through the reverse gear, and an off-gear state in which the torque output from the internal combustion engine is not transmitted to the output shaft of the transmission;
a first switch instruction part configured to output a first switch instruction to switch from the forward in-gear state or the reverse in-gear state to the off-gear state;
a second switch instruction part configured to output a second switch instruction to switch from the forward in-gear state to the reverse in-gear state or from the reverse in-gear state to the forward in-gear state;
a torque transmission detecting part configured to detect the torque transmission state switched by the torque transmission switching part;
a rotational speed changing part configured to change a rotational speed of the internal combustion engine; and
an electronic control unit having a microprocessor and a memory connected to the microprocessor, wherein
the microprocessor is configured to perform:
controlling the torque transmission switching part so as to switch from the forward in-gear state or the reverse in-gear state to the off-gear state when the first switch instruction is output from the first switch instruction part, and so as to switch from the forward in-gear state or the reverse in-gear state to the off-gear state until a predetermined time has elapsed when the second switch instruction is output from the second switch instruction part and to switch from the off-gear state to the reverse in-gear state or the forward in-gear state after the predetermined time has elapsed;
setting a target speed of the internal combustion engine in accordance with the torque transmission state detected by the torque transmission detecting part; and
controlling the rotational speed changing part so that the rotational speed of the internal combustion engine becomes the target speed set in the setting, and wherein the microprocessor is configured to perform
the setting including increasing the target speed when the off-gear state is detected by the torque transmission detecting part after the first switch instruction is output by the first switch instruction part, while not increasing the target speed even when the off-gear state is detected by the torque transmission detecting part after the second switch instruction is output by the second switch instruction part.
2. The apparatus according to claim 1 , wherein
the first switch instruction part includes a first switch member configured to instruct to switch to the off-gear state, and
the second switch instruction part includes a second switch member configured to instruct to switch to the forward in-gear state and a third switch member configured to instruct to switch to the reverse in-gear state.
3. The apparatus according to claim 1 , wherein
the vehicle further includes a torque converter between the internal combustion engine and the transmission, and
the torque transmission detecting part is configured to detect the torque transmission state, based on a slip ratio indicating a slip state of the torque converter.
4. The apparatus according to claim 3 , wherein
the torque transmission detecting part includes a first speed sensor configured to detect a rotational speed of an output shaft of the internal combustion engine and a second speed sensor configured to detect a rotational speed of an input shaft of the transmission, and
the microprocessor is configured to further perform
calculating the slip ratio by dividing the rotational speed detected by the second speed sensor by the rotational speed detected by the first speed sensor,
determining whether a switch from the off-gear state to the in-gear state has completed and whether a switch from the in-gear state to the off-gear state has completed, based on the slip ratio calculated in the calculating, and wherein
the microprocessor is configured to perform
the determining including determining that the switch to the off-gear state has completed when the slip ratio in the in-gear state is greater than or equal to a first predetermined value, and determining that the switch to the in-gear state has completed when the slip ratio in the off-gear state is smaller than or equal to a second predetermined value.
5. The apparatus according to claim 1 , further comprising:
a transmission control unit including a microprocessor performing controlling the torque transmission switching part; and
an internal combustion engine control unit including a microprocessor performing controlling the internal combustion engine and communicatively connected to the transmission control unit.
6. The apparatus according to claim 1 , further comprising:
a temperature sensor configured to detect a cooling water for the internal combustion engine, wherein
the microprocessor is configured to perform
the setting including increasing the target speed when the off-gear state is detected by the torque transmission detecting part after the first switch instruction is output by the first switch instruction part in a state where the cooling water detected by the temperature sensor is lower than or equal to a predetermined value, while not increasing the target speed even when the off-gear state is detected by the torque transmission detecting part after the first switch instruction is output by the first switch instruction part in a state where the cooling water detected by the temperature sensor is higher than the predetermined value.
7. An apparatus configured to control a vehicle including an internal combustion engine and a transmission having a forward gear and a reverse gear, comprising:
a torque transmission switching part configured to switch a torque transmission state to one of a forward in-gear state in which a torque output from the internal combustion engine is transmitted to an output shaft of the transmission through the forward gear, a reverse in-gear state in which the torque output from the internal combustion engine is transmitted to the output shaft of the transmission through the reverse gear, and an off-gear state in which the torque output from the internal combustion engine is not transmitted to the output shaft of the transmission;
a first switch instruction part configured to output a first switch instruction to switch from the forward in-gear state or the reverse in-gear state to the off-gear state;
a second switch instruction part configured to output a second switch instruction to switch from the forward in-gear state to the reverse in-gear state or from the reverse in-gear state to the forward in-gear state;
a torque transmission detecting part configured to detect the torque transmission state switched by the torque transmission switching part;
a rotational speed changing part configured to change a rotational speed of the internal combustion engine; and
an electronic control unit having a microprocessor and a memory connected to the microprocessor, wherein
the microprocessor is configured to function as:
a transmission control portion configured to control the torque transmission switching part so as to switch from the forward in-gear state or the reverse in-gear state to the off-gear state when the first switch instruction is output from the first switch instruction part, and so as to switch from the forward in-gear state or the reverse in-gear state to the off-gear state until a predetermined time has elapsed when the second switch instruction is output from the second switch instruction part and to switch from the off-gear state to the reverse in-gear state or the forward in-gear state after the predetermined time has elapsed;
a target speed setting portion configured to set a target speed of the internal combustion engine in accordance with the torque transmission state detected by the torque transmission detecting part; and
an internal combustion engine control portion configured to control the rotational speed changing part so that the rotational speed of the internal combustion engine becomes the target speed set by the target speed setting portion, wherein
the target speed setting portion is configured to increase the target speed when the off-gear state is detected by the torque transmission detecting part after the first switch instruction is output by the first switch instruction part, while not to increase the target speed even when the off-gear state is detected by the torque transmission detecting part after the second switch instruction is output by the second switch instruction part.
8. The apparatus according to claim 7 , wherein
the first switch instruction part includes a first switch member configured to instruct to switch to the off-gear state, and
the second switch instruction part includes a second switch member configured to instruct to switch to the forward in-gear state and a third switch member configured to instruct to switch to the reverse in-gear state.
9. The apparatus according to claim 7 , wherein
the vehicle further includes a torque converter between the internal combustion engine and the transmission, and
the torque transmission detecting part is configured to detect the torque transmission state based on a slip ratio indicating a slip state of the torque converter.
10. The apparatus according to claim 9 , wherein
the forward in-gear state and the reverse in-gear state are included in an in-gear state,
the torque transmission detecting part includes a first speed sensor configured to detect a rotational speed of an output shaft of the internal combustion engine and a second speed sensor configured to detect a rotational speed of an input shaft of the transmission, and
the microprocessor is configured to further function as:
a slip ratio calculation portion configured to calculate the slip ratio by dividing the rotational speed detected by the second speed sensor by the rotational speed detected by the first speed sensor; and
a determination portion configured to determine whether a switch from the off-gear state to the in-gear state has completed and whether a switch from the in-gear state to the off-gear state has completed, based on the slip ratio calculated by the slip ratio calculation portion, and wherein
the determination portion is configured to determine that the switch to the off-gear state has completed when the slip ratio in the in-gear state is greater than or equal to a first predetermined value, and determine that the switch to the in-gear state has completed when the slip ratio in the off-gear state is smaller than or equal to a second predetermined value.
11. The apparatus according to claim 7 , further comprising:
a transmission control unit including the transmission control portion; and
an internal combustion engine control unit including the internal combustion engine control portion and communicatively connected to the transmission control unit.
12. The apparatus according to claim 7 , further comprising:
a temperature sensor configured to detect a cooling water for the internal combustion engine, wherein
the target speed setting portion is configured to increase the target speed when the off-gear state is detected by the torque transmission detecting part after the first switch instruction is output by the first switch instruction part in a state where the cooling water detected by the temperature sensor is lower than or equal to a predetermined value, while not to increase the target speed even when the off-gear state is detected by the torque transmission detecting part after the first switch instruction is output by the first switch instruction part in a state where the cooling water detected by the temperature sensor is higher than the predetermined value.