摘要:
An apparatus for controlling movement of a throttle valve in response to a change in the position of an accelerator pedal. The apparatus includes a control circuit powered from a power source through an ignition switch for determining a value corresponding to a setting of the position of the throttle valve. A throttle actuator is connected to the control circuit for moving the throttle valve to the determined setting. A device is provided to retain the control circuit powered from the power source until the throttle actuator returns the throttle valve to its closed position after the ignition switch is turned off.
摘要:
An apparatus for controlling the angular displacement of a throttle valve for an automotive vehicle includes a return spring attached to the rotational axis of the throttle valve which biases the rotational axis of the throttle valve towards its fully closed position, and which automatically moves the throttle valve to its fully closed position without excessive wear on the throttle valve or on a throttle chamber.
摘要:
A system and method for controlling the opening angle of a throttle valve installed within an engine for a vehicle, in which the rate of change of the opening angular position of the throttle valve is calculated as a substantially cubic function of a relative rate of change in an angular position of an accelerator pedal, so that the speed of vehicle is held approximately constant when there is no consistent change in the angular position of the accelerator pedal and the speed of vehicle changes quickly as the rate of change of the angular position of the accelerator pedal increases.
摘要:
An apparatus responsive to a change in the position of an accelerator pedal for controlling movement of a throttle valve situated within an induction passage. The apparatus includes a control circuit which determines new and minimum values for the position of the accelerator pedal and determines a demand value corresponding to a setting of the position of the throttle valve as a function of the difference between the new and minimum values. The control circuit substitutes the new value for the minimum value when the accelerator pedal remains released and placed at the same position for a predetermined time.
摘要:
A traction control system monitors wheel slippage and variation of wheel slippage for detecting road friction condition. The traction control system selects brake control characteristics depending upon the detected road friction condition.
摘要:
A slip control system monitors variation of engine speed for detecting transition from engine accelerating condition to decelerating condition during slip control mode operation, in which engine speed is adjusted for reducing output torque for reducing magnitude of wheel slippage. Slip control mode operation is terminated when engine transition from the acceleration state to deceleration state is detected.
摘要:
A traction control system is associated with a vehicular brake system which can control braking force for respective individual driving wheel independently of each other on the basis of an average wheel slippage data. The average wheel slippage data is derived introducing weighing technology giving higher weight for wheel slippage on a driving wheel, on which occurring smaller wheel slippage in comparison with the other. The traction control performs control of application of braking force for respective driving wheel independently of each other so that wheel traction recovering efficiency at respective driving wheel can be optimized.
摘要:
A slip control system employs a plurality of slip control characteristics which may be provided as form of maps. One of the maps is selected depending upon wheel slippage in such a manner that a map having a greater engine speed variation rate with respect to variation of an accelerator position is selected while the wheel slippage is maintained smaller than a predetermined target slippage, and a map having a smaller engine speed variation rate is selected while wheel slippage is greater than the predetermined target slippage. The selected map is compared with a map previously selected at a preceding timing which is variable depending upon a lag time of engine response.
摘要:
A system and method for controlling a rotation of drive wheels for a vehicle in which a slippage (slip rate in percentage) between the drive wheels and a road surface on which the vehicle runs is calculated on the basis of a drive wheel rotation speed and a vehicle body speed, a plurality of different predetermined slippages, each representing a magnitude of a slip occurrence are stored, and a plurality of different characteristic graphs, each representing a relationship between opening angles of a first throttle valve associated with an accelerator and of a second throttle valve installed in series with the first throttle valve in an intake air passage of a vehicular engine are stored. Then, one of the characteristic graphs is selected to use the control of the opening angle of the throttle valve according to a change of the slip occurrence in such a way that when the slippage increases and exceeds one of the predetermined slippages, the opening angle of the second throttle valve is decreased toward its fully close position with respect to that of the first throttle valve and when the slippage decreases and becomes below one of the predetermined slippages, the opening angle of the second throttle valve is increased with time toward its original fully open position.
摘要:
A system and method for electronically controlling a vehicular engine operation in accordance with an accelerator operation which can utilize a system for automatically controlling a vehicle speed to a set cruising speed are disclosed in which an operating variable selection mechanism which selects and outputs one of operating variables whose value is larger than the other operating variable, the operating variables being derived from an accelerator and from an actuator of the automatic vehicle cruise controlling system is installed. The selected operating variable of the operating variable selection mechanism is detected by means of an accelerator sensor. A throttle actuator is controlled for driving the throttle valve toward the direction in which an opening angle of the throttle valve coincides with a target opening angle which is defined by a detected variable of the accelerator sensor. A limiter provided for limiting a maximum opening angle of the throttle valve is driven by means of a limiter driving mechanism toward the angular position of the throttle valve corresponding to the selected operating variable of the operating variable selection mechanism and is held thereat against the driving force of the throttle actuator by means of a limiter holding mechanism.