摘要:
A clutch controlling apparatus for automatically carrying out the operation of a clutch device comprises a first output device responsive to the amount of operation of an accelerator pedal for producing a first operation control signal for carrying out the complete engaging operation of the clutch device in relation to the amount of operation of the accelerator pedal, and a second output device responsive to the amount of operation of the accelerator pedal for producing a second operation control signal for operating the clutch device in a semi-engaged state at an amount of semi-engagement related to the amount of operation of the accelerator pedal. Either the first or second operation control signal is selected by a selector in accordance with the amount and speed of operation of the accelerator pedal and the selected operation control signal is applied to the clutch device enabling the operating range of the accelerator pedal to be widened in a control mode according to the second operation control signal.
摘要:
A thermosensitive switching circuit includes a first voltage divider for producing a reference voltage with a predetermined constant level and a second voltage divider for producing a detection voltage signal whose level changes in response to changes in the temperature to be detected. The reference voltage is compared with the detection voltage signal by a voltage comparator having an open-collector type output circuit, and a feedback resistor is connected between the output terminal and the input terminal of the voltage compartor to provide hysteresis for the comparing operation of the voltage comparator.
摘要:
In an engine speed controlling method in a PI isochronous control mode, the initial value of an integral term for PI control is determined when the difference between a given target engine speed and an actual engine speed becomes more than a prescribed level, and the value of the integral term is change to the value of a no-load rack position at which the target engine speed is maintained in no engine load condition, when the actual engine speed becomes equal to the target engine speed, whereby large overshoot and undershoot can be effectively suppressed.
摘要:
In a method for detecting malfunction in microcomputer system, in which a given job is processed in a multiple task processing manner, it is discriminated whether or not each of tasks was executed normally after the each execution thereof, and each count of counters provided for all of the tasks except for a prescribed task is changed in response to result of the discrimination. Each count of all counters is checked at the time of the execution of the prescribed task to determine whether or not all of the tasks were executed normally.
摘要:
In a method for automatically controlling a vehicle transmission system having a gear-type transmission and a clutch, in the case where the system is controlled in a control mode wherein the clutch is disengaged so as to prevent idle running of the vehicle when the amount of operation of the acceleration pedal becomes less than a prescribed level, when the clutch is engaged in response to an increase in the running speed of the vehicle, the control mode is changed to another control mode in which the engaged state of the clutch is maintained even if the amount of operation of the accelerator pedal becomes zero. Thus, in case of, for example, a vehicle drive-off mode for snow-covered road condition, it becomes possible to realize smooth vehicle running at low speed without need to depress the accelerator pedal.
摘要:
In an automatic transmission system in which a gear transmission and a clutch are electronically controlled so as to shift the transmission to the optimum gear position, the system comprises a first generator for generating a set of initial map data corresponding to the position of a selector, the initial map data being for determining an initial target gear position to which the gear should be initially shifted after the position of the selector is changed, and a second generator for generating a set of normal map data corresponding to the position of the selector, the normal map data being for determining a normal target gear position to which the gear should be shifted after the gear is shifted to the determined initial target position. One of the outputs of the first and second generators is selected and applied to a calculator in which the target gear position is calculated in accordance with the selected map data. The gear transmission is automatically shifted to the calculated gear position. When the gear transmission is in a transitory condition, the initial map data is selected, whereby inappropriate gear shift operation just after the position of the selector is changed can effectively be prevented.
摘要:
In an apparatus for controlling an internal combustion engine for a vehicle provided with an electronically controlled automatic transmission system including a friction-type clutch and a gear-type transmission, the speed of the engine is controlled in accordance with a target speed determined by whether the clutch is engaged or not, and at the moment the clutch becomes engaged, the target engine speed gradually changes from the target speed for the disengaged condition of the clutch to that for the fully engaged condition of the clutch, whereby the mechanical shock occurring at the time of the engagement of the clutch is remarkably reduced.
摘要:
In an automatic transmission system for a vehicle having a gear-type transmission, a clutch connected to the gear-type transmission and an actuator for operating the gear-type transmission and the clutch, the system has a controller for controlling the operation of the actuator in accordance with the magnitude of load of the vehicle at each instant so as to shift the gear-type transmission into the target gear position. Thus, good fuel economy can be realized together with smooth driving performance even when the vehicle load is changed.
摘要:
An automatic transmission system for a vehicle in which the gear change operations are carried out in response to a condition signal relating to the speed of an internal combustion engine, which is determined by detecting the operating speed of a brake pedal of the vehicle and a variable filter circuit for receiving the condition signal and for removing any high frequency component of the condition signal, the frequency response characteristics of the variable filter circuit being changeable in response to the operating speed of a brake pedal means. The system is controlled in response to an output signal derived from the variable filter circuit so as to shift the transmission into a gear position determined on the basis of a predetermined map data in response to the operating condition of the vehicle at each instant, whereby the gear change operation can be carried out so as to match the actual operating condition of the vehicle.
摘要:
In a vehicle automatic transmission system employing a gear-type transmission, the system has a selector having a drive position for allowing automatic gear-change operation over a plurality of gear positions and a gear-holding position provided adjacent to the drive position, and the gear-change operation is limited below a gear position or is fixed at the gear position which is decided the actual gear position at the time a operation lever of the selector is moved from the drive position and the gear-holding position, whereby the system enables gear holding in each of the gear position by only providing the selector one with additional position.