Abstract: A traveling-speed control device restricts a traveling speed such that the traveling speed falls within an allowable range from a spot reference speed for a current spot, the spot reference speed being acquired from a spot reference speed storage area in which spot reference speeds at respective spots are stored, the spot reference speeds being set based on respective pieces of traveling speed data at the respective spots. Hereby, a vehicle can travel at a more appropriate traveling speed at each spot regardless of whether the each spot is on a road on map data or not.

Abstract: On the basis of a target completion position as a position for completing an ON operation of a brake in front of a corner of a predetermined traveling course in a predetermined traveling course, a target completion vehicle speed as a target completion position in the target traveling pattern, a target deceleration as a deceleration at the target completion position in the target traveling pattern, and a vehicle speed of the vehicle, a start timing for starting an ON operation of the brake so that the vehicle speed is reduced to the target completion position at the target deceleration and becomes the target completion vehicle speed at the target completion position is set, and the notification device controls the notification device to perform a brake ON notification which is a notification for prompting the ON operation of the brake at the set start timing.

Abstract: In a case where a determination is made, after an engine is started based on a remote operation, that an ambient environment of a vehicle is not a predetermined appropriate environment based on a detection value from an ambient environment detection sensor configured to detect the ambient environment of the vehicle, the engine is stopped. As a result, it is possible to suppress a deterioration of an environmental state around the vehicle or an occupant cabin. As a result, it is possible to take more appropriate measures when the engine is started based on the remote operation.

Abstract: A running support system executes: a temperature acquisition process of acquiring a tire temperature; an appropriate value setting process of deriving, as a candidate value for a vehicle speed appropriate value, a value to be smaller as the tire temperature is lower, and setting the vehicle speed appropriate value based on the candidate value; and a support process of at least either notifying a driver of the vehicle speed appropriate value or decelerating a vehicle in a case where a vehicle speed exceeds the vehicle speed appropriate value.

Abstract: On the basis of a target completion position as a position for completing an ON operation of a brake in front of a corner of a predetermined traveling course in a predetermined traveling course, a target completion vehicle speed as a target completion position in the target traveling pattern, a target deceleration as a deceleration at the target completion position in the target traveling pattern, and a vehicle speed of the vehicle, a start timing for starting an ON operation of the brake so that the vehicle speed is reduced to the target completion position at the target deceleration and becomes the target completion vehicle speed at the target completion position is set, and the notification device controls the notification device to perform a brake ON notification which is a notification for prompting the ON operation of the brake at the set start timing.

Abstract: In a case where an engine is started based on a remote operation, a limitation condition for limiting an engine start is tightened or a stop condition after the engine is started is relaxed, as compared to a case where the engine is started based on a switch operation in an occupant cabin. That is, it is difficult to start the engine when the engine is started based on the remote operation, and it is easy to stop the engine when the engine is started based on the remote operation. As a result, it is possible to take more appropriate measures when the engine is started based on the remote operation.

Abstract: A traveling-speed control device restricts a traveling speed such that the traveling speed falls within an allowable range from a spot reference speed for a current spot, the spot reference speed being acquired from a spot reference speed storage area in which spot reference speeds at respective spots are stored, the spot reference speeds being set based on respective pieces of traveling speed data at the respective spots. Hereby, a vehicle can travel at a more appropriate traveling speed at each spot regardless of whether the each spot is on a road on map data or not.

Abstract: In a case where a determination is made, after an engine is started based on a remote operation, that an ambient environment of a vehicle is not a predetermined appropriate environment based on a detection value from an ambient environment detection sensor configured to detect the ambient environment of the vehicle, the engine is stopped. As a result, it is possible to suppress a deterioration of an environmental state around the vehicle or an occupant cabin. As a result, it is possible to take more appropriate measures when the engine is started based on the remote operation.

Abstract: In a case where a non-history position start for starting an engine based on a remote operation at a position at which a position of a vehicle is different from a start history position having a start history of the engine is executed, a limitation condition for limiting an engine start is tightened as compared to a case where a history position start for starting the engine based on the remote operation at the start history position is executed. That is, in a case where the non-history position start is executed, it is difficult to start the engine. As a result, it is possible to take more appropriate measures when the engine is started based on the remote operation.

Abstract: In a case where an engine is started based on a remote operation, a limitation condition for limiting an engine start is tightened or a stop condition after the engine is started is relaxed, as compared to a case where the engine is started based on a switch operation in an occupant cabin. That is, it is difficult to start the engine when the engine is started based on the remote operation, and it is easy to stop the engine when the engine is started based on the remote operation. As a result, it is possible to take more appropriate measures when the engine is started based on the remote operation.

Abstract: A running support system executes: a temperature acquisition process of acquiring a tire temperature; an appropriate value setting process of deriving, as a candidate value for a vehicle speed appropriate value, a value to be smaller as the tire temperature is lower, and setting the vehicle speed appropriate value based on the candidate value; and a support process of at least either notifying a driver of the vehicle speed appropriate value or decelerating a vehicle in a case where a vehicle speed exceeds the vehicle speed appropriate value.

Abstract: A running support system executes: a specifying process of specifying a currently-running area from among a plurality of running areas, the currently-running area being a running area where a vehicle is running; an appropriate value setting process of setting a vehicle speed appropriate value that is an appropriate vehicle speed when the vehicle runs in the currently-running area; and a support process of at least either notifying a driver of the vehicle speed appropriate value or decelerating the vehicle in a case where a vehicle speed exceeds the vehicle speed appropriate value. In the appropriate value setting process, in a case where an advancing direction of the vehicle does not accord with a reference advancing direction, a value smaller than a value to be set in a case where the advancing direction accords with the reference advancing direction is set as the vehicle speed appropriate value.

Abstract: In a torque-based detection process, a control device detects an excess acceleration state of a vehicle when a duration time of a state in which a value obtained by subtracting a required torque from an actual torque of an internal combustion engine is equal to or greater than a torque threshold value is equal to or greater than a torque determination time. In an acceleration-based detection process, the control device detects the excess acceleration state of the vehicle when a duration time of a state in which a value obtained by subtracting a required acceleration from an actual acceleration of the vehicle is equal to or greater than an acceleration threshold value is equal to or greater than an acceleration determination time.

Abstract: In a torque-based detection process, a control device detects an excess acceleration state of a vehicle when a duration time of a state in which a value obtained by subtracting a required torque from an actual torque of an internal combustion engine is equal to or greater than a torque threshold value is equal to or greater than a torque determination time. In an acceleration-based detection process, the control device detects the excess acceleration state of the vehicle when a duration time of a state in which a value obtained by subtracting a required acceleration from an actual acceleration of the vehicle is equal to or greater than an acceleration threshold value is equal to or greater than an acceleration determination time.

Abstract: An engine diagnostic system is provided for diagnosing a deterioration degree of an engine mounted on a vehicle. The engine diagnostic system learns, as a knock learning value, a maximum advancement amount of an ignition timing that reduces knocking. A database stores time-series data of the knock learning value of the engine for each individual engine. The knock learning value is acquired from each of a plurality of vehicles of the same model. An evaluation process computes an evaluation value indicating the deterioration degree of a designated engine using the time-series data of the knock learning value of each engine stored in the database.

Abstract: Determination criteria for an excessive torque state are changed based on a predetermined vehicle speed related parameter. The determination criteria are changed such that when the vehicle speed related parameter is a value corresponding to a relatively high vehicle speed state, the excessive torque state is difficult to determine compared to when the vehicle speed related parameter is a value corresponding to a relatively low vehicle speed state.

Abstract: An engine diagnostic system is provided for diagnosing a deterioration degree of an engine mounted on a vehicle. The engine diagnostic system learns, as a knock learning value, a maximum advancement amount of an ignition timing that reduces knocking. A database stores time-series data of the knock learning value of the engine for each individual engine. The knock learning value is acquired from each of a plurality of vehicles of the same model. An evaluation process computes an evaluation value indicating the deterioration degree of a designated engine using the time-series data of the knock learning value of each engine stored in the database.

Abstract: A failure diagnosis apparatus for an internal combustion engine is provided. The internal combustion engine is mounted on a vehicle. The failure diagnosis apparatus includes an electronic control unit. The electronic control unit is configured to: measure an abnormal time in which an abnormal state where an accelerator pedal operation amount is equal to or larger than a first specified operation amount and a rate of actual output torque to requested torque is smaller than a specified rate value continues; and record specified data for a failure diagnosis of the internal combustion engine on a recording device in the cases where the abnormal time is equal to or longer than a first specified time that is set in advance and the accelerator pedal operation amount is equal to or larger than a second specified operation amount that is larger than the first specified operation amount.

Abstract: A failure diagnosis apparatus for an internal combustion engine is provided. The internal combustion engine is mounted on a vehicle. The failure diagnosis apparatus includes an electronic control unit. The electronic control unit is configured to: measure an abnormal time in which an abnormal state where an accelerator pedal operation amount is equal to or larger than a first specified operation amount and a rate of actual output torque to requested torque is smaller than a specified rate value continues; and record specified data for a failure diagnosis of the internal combustion engine on a recording device in the cases where the abnormal time is equal to or longer than a first specified time that is set in advance and the accelerator pedal operation amount is equal to or larger than a second specified operation amount that is larger than the first specified operation amount.

Abstract: Determination criteria for an excessive torque state are changed based on a predetermined vehicle speed related parameter. The determination criteria are changed such that when the vehicle speed related parameter is a value corresponding to a relatively high vehicle speed state, the excessive torque state is difficult to determine compared to when the vehicle speed related parameter is a value corresponding to a relatively low vehicle speed state.