Abstract: A capacity estimating apparatus for a secondary battery includes a current-detecting section configured to detect a value of current flowing in the secondary battery; a voltage-detecting section configured to detect a voltage value of the secondary battery; a first estimating section configured to calculate a first estimate value of a remaining capacity of the secondary battery on the basis of an accumulated value of the current values detected by the current-detecting section; and a second estimating section configured to calculate a second estimate value of the remaining capacity of the secondary battery on the basis of the voltage value detected by the voltage-detecting section. The first estimating section is configured to calculate a difference between the first estimate value and the second estimate value, and to correct the first estimate value by correcting the accumulated value so as to gradually reduce the difference.

Abstract: A capacity estimating apparatus for a secondary battery includes a current-detecting section configured to detect a value of current flowing in the secondary battery; a voltage-detecting section configured to detect a voltage value of the secondary battery; a first estimating section configured to calculate a first estimate value of a remaining capacity of the secondary battery on the basis of an accumulated value of the current values detected by the current-detecting section; and a second estimating section configured to calculate a second estimate value of the remaining capacity of the secondary battery on the basis of the voltage value detected by the voltage-detecting section. The first estimating section is configured to calculate a difference between the first estimate value and the second estimate value, and to correct the first estimate value by correcting the accumulated value so as to gradually reduce the difference.

Abstract: A secondary battery remaining capacity estimating apparatus basically includes a secondary battery, a charge/discharge determining section, a remaining capacity estimating section, a remaining capacity indicating section and a remaining capacity indication limiting section. The charge/discharge determining section determines if the secondary battery is charging or discharging. The remaining capacity estimating section estimates a remaining electric power capacity of the secondary battery. The remaining capacity indicating section indicates a remaining capacity of the secondary battery based on an estimation value by the remaining capacity estimating section. The remaining capacity indication limiting section limits a decrease of a remaining capacity indicated upon determining that the secondary battery is charging and the estimation value will decrease, and limits an increase of a remaining capacity indicated upon determining that the secondary battery is discharging and the estimation value will increase.

Abstract: A secondary battery remaining capacity estimating apparatus basically includes a secondary battery (1), a charge/discharge determining section (2005), a remaining capacity estimating section (20), a remaining capacity indicating section (7) and a remaining capacity indication limiting section (21). The charge/discharge determining section (2005) determines if the secondary battery is charging or discharging. The remaining capacity estimating section (20) estimates a remaining electric power capacity of the secondary battery. The remaining capacity indicating section (7) indicates a remaining capacity of the secondary battery based on an estimation value by the remaining capacity estimating section (20).

Abstract: In adaptive cruise control method for an automotive vehicle, an inter-vehicle distance between the vehicle and a preceding vehicle which is traveling ahead of the vehicle is detected, a velocity of at least one of the vehicle and the preceding vehicle is detected, a traveling state of the vehicle is controlled on the basis of the detected inter-vehicle distance and a target inter-vehicle distance, a delay is provided for one of the detected velocities of the vehicle and the preceding vehicle which is used to set the target inter-vehicle distance at a time of a detection of one of the velocities of the vehicle and the preceding vehicle which is used to set the target inter-vehicle distance, and the target inter-vehicle distance is set on the basis of the detected velocity of one of the vehicle and the preceding vehicle for which the delay is provided.

Abstract: In vehicle velocity control apparatus and method for an automotive vehicle, a first following control is allowed to be executed when a vehicle velocity of the vehicle (host vehicle) Vcar is equal to or higher than a first set vehicle velocity V1 and a second following control is allowed to be executed when the vehicle velocity of the host vehicle Vcar is equal to or lower than a second set vehicle velocity V2 which is lower than first set vehicle velocity V1. Hence, a vehicle driver can accurately determine which of the first and second following controls is being executed by confirming the vehicle velocity of the host vehicle Vcar at which the corresponding one of the controls is started to be executed through a speedometer of the vehicle.

Abstract: In vehicle velocity control apparatus and method for an automotive vehicle, a first following control is allowed to be executed when a vehicle velocity of the vehicle (host vehicle) Vcar is equal to or higher than a first set vehicle velocity V1 and a second following control is allowed to be executed when the vehicle velocity of the host vehicle Vcar is equal to or lower than a second set vehicle velocity V2 which is lower than first set vehicle velocity V1 . Hence, a vehicle driver can accurately determine which of the first and second following controls is being executed by confirming the vehicle velocity of the host vehicle Vcar at which the corresponding one of the controls is started to be executed through a speedometer of the vehicle.

Abstract: In adaptive cruise control method for an automotive vehicle, an inter-vehicle distance between the vehicle and a preceding vehicle which is traveling ahead of the vehicle is detected, a velocity of at least one of the vehicle and the preceding vehicle is detected, a traveling state of the vehicle is controlled on the basis of the detected inter-vehicle distance and a target inter-vehicle distance, a delay is provided for one of the detected velocities of the vehicle and the preceding vehicle which is used to set the target inter-vehicle distance at a time of a detection of one of the velocities of the vehicle and the preceding vehicle which is used to set the target inter-vehicle distance, and the target inter-vehicle distance is set on the basis of the detected velocity of one of the vehicle and the preceding vehicle for which the delay is provided.

Abstract: An adaptive cruise control system for a host vehicle is arranged to calculate a target inter-vehicle distance between the preceding vehicle and the host vehicle, to calculate a target vehicle speed and a first target driving torque based on the inter-vehicle distance and the target inter-vehicle distance, to calculate a second target driving torque based on the target vehicle speed and the host vehicle speed, to generate a torque select signal based on the host vehicle speed, to select one of the first and second target driving torques based on the torque select signal, to match the selected target driving torque with a previous target driving torque when the target driving torque is changed, and to generate driving/braking force based on the selected target driving torque.

Abstract: A preceding vehicle following control apparatus includes a speed sensor for sensing a vehicle speed of a controlled vehicle, a spacing sensor for sensing a spacing or distance from the controlled vehicle to a preceding vehicle, and a following controller. In addition to a following mode for controlling the driving/braking force of the controlled vehicle in accordance with the spacing and the vehicle speed, the following controller has a wait mode, an auto-stop mode and a release mode. The following controller initially sets the control mode to the wait mode, and changes the control mode from the wait mode to one of the auto-stop mode and the following mode depending on whether the controlled vehicle is in a stop state or not.

Abstract: A longitudinal driving/braking force control system for controlling the vehicle speed and/or the headway vehicle-to-vehicle distance is arranged to bring a vehicle to a stop and to hold the vehicle in a stop condition with a stop holding braking force in a predetermined situation. When an accelerator pedal is depressed by a driver in the stop condition, a controller decreases the braking force from the stop holding braking force to zero according to a predetermined brake releasing characteristic to allow a start of the vehicle. In response to a driver's accelerator operation, the controller calculates a driver's input driving force, estimates a grade resistance of the vehicle and further calculates a brake actuation quantity corresponding to the grade resistance. Then, the controller modifies the brake releasing characteristic to ensure a smooth start in accordance with the calculated driver's input driving force, the estimated grade resistance and the calculated brake actuation quantity.

Abstract: Engine rotation speed during idle running is feedback-controlled. A second target rotation speed which progressively decreases towards a first target rotation speed from a predetermined engine rotation speed, is set. The engine rotation speed is feedback-controlled based on a difference between a present rotation speed and this second target rotation speed. In this way, compared to the case where feedback control is performed using the first target rotation speed as a target value, the time period during which the engine rotation speed falls below the first target rotation speed is shortened and the engine rotation speed is made to stably converge to the first target rotation speed.

Abstract: When an operation causing a decrease of the engine load is requested, for example, by switching off an air conditioner switch, an idle speed control system calculates a fuel decrease quantity from an engine load decrease quantity, and further calculates an air decrease quantity in accordance with a desired air fuel ratio after the engine load decrease, and the fuel decrease quantity. The control system decreases the air supply quantity to the engine by the air decrease quantity. Then, after the elapse of a preset time interval, the system controls the external load such as the air conditioner so as to reduce the engine load (for example, by turning off the air conditioner), and decrease the fuel injection quantity by the fuel decrease quantity.