Abstract: A fuel tank isolation valve (FTIV) and methods of operation are provided. The FTIV includes first and second solenoid valves with the movable valve member of one of the solenoid valves seating against a movable valve member of the other one of the solenoid valves. One of the solenoid valves may be refueling valve allowing for evacuation of fuel vapor during refueling operations as well as to allow for purging high vapor pressure within the fuel tank. One of the solenoid valves may be a proportional valve used to control the flow of fuel vapor to an intake manifold of an operating internal combustion engine as well as to reduce a vacuum generated within the fuel tank.

Abstract: The disclosure relates to a method for operating a motor vehicle that includes a drive unit, an output unit, and a clutch arranged between the drive unit and the output unit and configured to transmit a torque. A detection unit detects an operating state of the drive unit. When the operating state of the drive unit is in an overrun mode, a control unit controls a clutch slip, which results in adjustment of the torque that can be transmitted as a function of a speed of the motor vehicle. The disclosure further relates to a device for operating a motor vehicle, and to a motor vehicle that includes such a device.

Abstract: A vehicle includes: a first electronic module transmitting one data object of new data and comparison data indicating a difference between the new data and existing data when transmission of the new data is requested; a second electronic module receiving the comparison data, acquiring the new data from the comparison data, and controlling at least one operation of the vehicle based on the acquired new data; and a bus transferring data between the first electronic module and the second electronic module.

Abstract: An engine control device for controlling an engine based on a vehicle operating state is provided, that includes a basic target torque determinator for setting a vehicle target acceleration based on an accelerator pedal operation and determining a basic target engine torque based on the vehicle target acceleration, a torque reduction demand determinator for determining whether an engine torque reduction is demanded based on the vehicle operating state other than the accelerator pedal operation, a torque reduction amount determinator for determining an engine torque reduction amount according to the operating state when the torque reduction is demanded, a final target torque determinator for determining as a final target torque an engine torque calculated by subtracting the torque reduction amount from the basic target torque when the torque reduction is demanded, and an engine controller for controlling the engine so as to output the final target torque.

Abstract: A DC power supply control system includes a voltage conversion module configured to couple to a DC power supply and convert a DC voltage to a power voltage; a power port coupled to the voltage conversion module and configured to be coupled to a peripheral load; a switch module coupled to the voltage conversion module and configured to switch on/off the voltage conversion module; and a detection module coupled to the power port and configured to detect the peripheral load. When the detection module detects the peripheral load, the switch module switches on the voltage conversion module, allowing the DC voltage to be converted to the power voltage. Without a peripheral load being detected by the detection module, the switch module switches off the voltage conversion module. A DC power supply control circuit is further disclosed.

Abstract: A speed control system for a motor vehicle has an electronic control device which generates actuation signals for controlling the speed of the motor vehicle to a specified desired speed, and a control element, on the actuation of which an intervention which influences the speed control is performed. The control element is designed in the form of a button. When the button is pressed, the system intervenes in the active speed control for the time for which the button is pressed in such a way that no drive torque is generated. When the button is no longer pressed, the original speed control is resumed.

Abstract: A cruise control system includes an input device that generates an operator input signal. A control module generates a cruise control command signal to maintain a vehicle speed at a set target speed. The control module operates in a normal mode that is associated with decreasing the set target speed, based on the operator input signal, when the vehicle speed is within a window about the set target speed. The control module overrides the normal mode and enables reset of the set target speed to a current vehicle speed, which is based on the operator input signal, when the vehicle operator input signal is greater than the cruise control command signal.

Abstract: An accelerator pedal reaction force control device for controlling a depression reaction force of an accelerator pedal provided to a motor vehicle, the control device including: a reaction force actuator that provides the accelerator pedal with a depression reaction force; a target reaction force setting unit that sets a target depression reaction force; and a vehicle speed maintenance depression amount setting unit that sets an amount of depression of the accelerator pedal for maintaining a current vehicle speed as a vehicle speed maintenance depression amount, wherein, when a pedal depression amount exceeds the vehicle speed maintenance depression amount, the target reaction force setting unit performs a cruize assist whereby the target depression reaction force is set to a value of a cruize assist depression reaction force.

Abstract: A suspension control system for a vehicle includes a pressure increasing module and a compressor control module. In response to a startup of the vehicle, the pressure increasing module: selectively sets a pressure increase signal to a first state when an air pressure within air bags of a suspension system is less than a predetermined pressure; and selectively sets the pressure increase signal to a second state when the air pressure is greater than the predetermined pressure. In response to the startup of the vehicle, the compressor control module: operates an air compressor of the suspension system when the pressure increase signal is in the first state; and disables operation of the air compressor when the pressure increase signal is in the second state.

Abstract: An exhaust gas-treating device (1) for an exhaust system of an internal combustion engine, especially of a motor vehicle, which is provided with an insert (3), which has a plurality of ducts (5, 5?), through which parallel flow is possible. The insert has, in an inflow-side, first section (6), an oxidation catalyst coating, which forms an oxidation catalytic converter (K1). The insert comprises on an outflow-side a second section (7) with a particle filter (K3) with inlet ducts (12) closed on the outflow side and with outflow ducts (13) closed on the inflow side after the first section (6). Greater integration of a plurality of catalyst components of the exhaust gas-treating device (1) is possible.

Abstract: An engine system includes a throttle actuator module and a torque control module. The throttle actuator module controls a throttle actuator based on a desired throttle area. The torque control module determines an actuator torque. The torque control module determines a rate limited torque, a maximum torque, and a minimum torque based on the actuator torque and a predetermined rate of change. The torque control module determines the desired throttle area based on the actuator torque when the rate limited torque is greater than the maximum torque. The torque control module determines the desired throttle area based on the actuator torque when the rate limited torque is less than the minimum torque.

Abstract: A method and control module for operating a vehicle powertrain in response to a cruise control includes a primary closed loop control module generating a primary closed loop control signal and a primary torque request signal based on the primary closed loop control signal. The control module also includes a secondary closed loop control module generating a secondary closed loop control signal and a secondary torque request signal based on the secondary closed loop control signal. A transmission control module controls a transmission based on the primary torque request control signal and the secondary torque request signal.

Abstract: A motor vehicle multi-stage integrated brake assist (MSIBA) system, which can provide at least one brake assist level of a plurality of predetermined levels of brake assist (i.e., deceleration) less than or greater than the required amount of braking (i.e., deceleration) calculated by the MSIBA to avoid a collision with an obstacle at the time the driver initiates braking, but allows the driver to increase or remove the provided predetermined level of brake assist.

Abstract: In one embodiment, a vehicle speed control device includes an electronic control unit (ECU). A forward vehicle sensor, electrically communicating with the ECU, generates a forward vehicle signal as a function of whether a forward vehicle is detected. The forward vehicle signal indicates a speed and a distance to the forward vehicle. A speed sensor, electrically communicating with the ECU, senses a driven vehicle speed. Control logic, electrically communicating with the ECU and the forward vehicle sensor, controls the driven vehicle speed as a function of a driven vehicle acceleration and the forward vehicle signal. The control logic sets a fault status as a function of the driven vehicle acceleration and the forward vehicle signal.

Abstract: A vehicle cruise control system comprises a plurality of pre-set cruise control speed buttons and cruise control logic circuitry coupled to the pre-set cruise control speed buttons. Each one of the pre-set cruise control speed buttons corresponds to a respective pre-set cruise control speed. The cruise control logic circuitry is configured for implementing control of a vehicle speed to maintain the respective pre-set cruise control speed corresponding to a selected one of said pre-set cruise control speed buttons.

Abstract: A vehicle cruise control apparatus is provided for controlling a vehicle to run at a set speed desired by a driver. The apparatus stores a state in which the driver inputs a set speed (for example, the number of times the driver inputs the set speeds and a period at which the driver inputs the set speeds), and calculates a target acceleration/deceleration from the input state and a vehicle speed deviation (calculated by subtracting the actual vehicle speed from the set speed).

Abstract: There is provided a pedal apparatus for vehicles, which comprises a pedal reaction-force addition means 4 for adding a reaction force to a pedal 1 of a vehicle, a pedal force detection means 2 for detecting a force added to the pedal 1, a pedal reaction-force control means 3 for adjusting the output of the pedal reaction-force addition means 4. During the running of the vehicle, the pedal reaction-force control means 3 performs the adjustment of a reaction force of the pedal on the basis of the driving environment of the vehicle and the driver's intention and judgement in pedal operation in the driving environment, whereby it is ensured that when the driver has no intention of operating the pedal, the driver can sufficiently place his or her foot on the pedal and that when he driver has any intention of operating the pedal, the driver can realize a smooth pedal operation.

Abstract: A method and system adjusts powertrain controls to avoid significant deviations from set speed during speed control operation. Low vacuum conditions of a reservoir vacuum resulting from high load conditions are detected and eliminated through the initiation of downshifts. Detection is based on the determination that speed control mode has been initialized, the throttle is extended, vehicle acceleration is low, and there has been a significant deviation from set speed. The downshift creates an increase in engine rpm and a reduction in throttle angle to increase the manifold vacuum and thereby recharge the reservoir vacuum and eliminate the low vacuum condition. The transmission can be returned to normal operation and the pre-adjustment gear upon elimination of the low vacuum condition or the occurrence of a driver override condition.

Abstract: An apparatus and method for controlling the speed of a vehicle, the apparatus manipulates a cable having one end secured to a throttle and the other secured to a motor for applying a force to the cable. A motor controller provides commands to the motor and the motor controller receives an input in the form of a vehicle velocity setting and in response to the value of the setting setting the motor controller instructs the motor to pull the cable a predetermined distance corresponding to a predetermined throttle position, the predetermined distance is stored in a lookup table and the predetermined throttle position corresponds to a vehicle velocity that is similar to the vehicle velocity setting.

Abstract: In the case of a process for changing an electronic memory for use-related data of a vehicle, the changed new data and the old data maintained in the memory are sent to a comparator, in which case the comparator permits the taking-over or acceptance of the new data into the memory only if the new data have changed in comparison to the old data in a manner which conforms with the use of the data.

Abstract: The vehicle speed control arrangement according to the invention has a cruise control function module and a limitation function module to limit the speed to a variable, specified limiting speed which separates a range of permitted speeds from a range of speeds to be avoided. For the purpose of convenient and functionally reliable operation, the apparatus has an operating device for reciprocally activating either one or the other function module with simultaneous deactivation of the other module and for setting the required speed value in cruise control mode and a desired limiting-speed value in limitation mode.

Abstract: A throttle valve control apparatus serves to electrically drive a throttle valve which adjusts a rate of air flow into an engine mounted on a vehicle. The throttle valve control apparatus includes a lever connected to the throttle valve for movement in an opening direction and a closing direction together with the throttle valve. An opening degree limiting member is located in a side of the lever which corresponds to the opening direction. A spring urges the opening degree limiting member in a direction of closing the throttle valve. An accelerator interlocking and driving device serves to move the opening degree limiting member in accordance with a degree of operation of an accelerator member. A throttle actuator functions to adjust a degree of opening of the throttle valve. A vehicle speed sensor functions to detect a running speed of the vehicle. A guard actuator serves to adjust a position of the opening degree limiting member.

Abstract: A control system for influencing the speed of a motor vehicle. The invention is characterized in that the retarder controller and the pertaining servomechanism already available in a vehicle with an installed retarder is in traction operation additionally utilized for throttling the drive engine down when a presettable allowed maximum value of the speed is exceeded.

Abstract: In an hydraulic braking system for vehicles solenoid-controlled valves are located in brake lines between the master cylinder and brakes on front and rear wheels of the vehicle. The solenoid-controlled valves are adapted to operate independently of each other to achieve independent pressure levels in the front and rear brakes by operation of a motor driven pump in response to signals supplied to an electronic control module from pressure sensing apparatus in each respective brake line.

Abstract: In a suspension control system, a constant speed travel control device controls throttle control unit according to information from a control switch unit and a vehicle speed sensor, to control the vehicle speed, and, when necessary, applies an over-drive off signal to an automatic speed changer, and a suspension control device detects acceleration of the vehicle from the outputs of the vehicle speed sensor and a throttle opening sensor, to calculate a most suitable damping force of a suspension, and receives control state data through a transmission line from the constant speed travel control device, to determine a most suitable damping force to control damping force switching unit. Thereby, comfortableness in the driving vehicle is improved.

Abstract: A control system of an automatic transmission for determining and setting a gear stage on the basis of at least two of the parameters including a vehicle speed and a throttle opening. The control system comprises: a first detector for detecting a first parameter; a second detector for detecting a second parameter; a gear stage memory for determining and storing speed stage areas for holding the gear stages individually in terms of the first and second parameter and any two speed stage areas in a partially overlaid manner; a shift decider for determining a shift to be executed, on the basis of the first parameter outputted from the first detector, the second parameter outputted from the second detector, and the stored content of the gear stage memory; and a gear stage determiner for determining a gear stage to be set, if there are a plurality of gear stages determined by the first parameter and second parameter detected, at any of the gear stages.

Abstract: A cruise control system for vehicles uses a video camera to follow a vehicle driving ahead at a constant distance and speed on a highway. The system detects the distance to a vehicle and a relative speed to set the upper and lower limitations for the distance and the speed. The system controls a speed of the vehicle in accordance with the comparisons of the detected distance and speed with the limitations.

Abstract: A control system for a vehicle has a continuously variable automatic transmission, an automatic transmission control system for controlling the automatic transmission, and a cruise control system for controlling speed of the vehicle to a desired cruising speed. The cruise control system has a vehicle speed sensor, and a desired cruising speed providing section responsive to an output signal of the vehicle speed sensor for providing the desired cruising speed. The vehicle speed sensor is used for both the automatic transmission control system and the cruise control system.

Abstract: An automatic speed control system has a device for detecting an actual speed of vehicle, a device for setting a target speed of the vehicle, and a device for controlling the actual speed so that it approaches the target speed by adjusting a throttle opening. The improved system includes a down-shift device for making a down-shift operation of a transmission so as to accomplish the target speed under a predetermined condition when the vehicle runs on an uphill rod, and uphill end judge device for holding that an end of the uphill road has been reached when the throttle opening is reduced beyond a predetermined value from a maximum value after the down-shift operation. An uphill end of a short length can be properly detected so that a desirable speed control can be accomplished.

Abstract: A driver override of a cruise control system is detected and employed to suitably alter the powertrain controls. A driver override of the cruise control system is detected by a lack of correspondence between the engine throttle position and the cruise control servo position, taking into account any hysteresis and lash which may occur in the linkage coupling the servo to the throttle. The lash is determined by storing the measured servo position whenever the measured throttle position is equal to a predefined value, and the controller responds during a detected driver override by instituting normal or noncruise related control parameters. This control permits the cruise control parameters to yield smooth control without unnecessary shifting while retaining a more responsive control during driver override conditions.

Abstract: An automatic car-speed controller is provided with a car-speed sensor, a command switch, a car-speed memory, an actuator, a control mechanism, and a holding circuit for cutting off an electric current to the actuator according to a braking operation and maintaining the actuator in its nonworking state till the actuator returns to its working state in response to a cruise command signal from the command switch in addition to the control mechanism. According to this controller, it is possible to release the actuator rapidly from the automatic car-speed controlling state in response to the braking operation even if the trouble occurs in the control mechanism.

Abstract: A fixed speed control device including a predetermined vehicle operating speed controller, a release time limit set-up system, a release switch system, and a memory system, which are all electronically connected to an electronic control circuit. The fixed operating speed control device controls the speed of a vehicle so that it is commesurate with a specified preset vehicle speed, and can release itself from the controlled speed when a deviation exceeds a specified value, and properly adopt one of ten control branches to meet various requirements of vehicle operation.

Abstract: A system and method for automatically controlling a vehicle speed to a desired cruise speed are disclosed in which when the vehicle speed is reduced by a first predetermined value from a set and stored cruise speed at which the vehicle is cruising during the operation of the automatic cruise control, the gear range of a vehicular transmission is shifted down and simultaneously the set and stored cruise speed is updated to reduce the set and stored cruise speed by a second predetermined value so that the vehicle speed coincides with the updated cruise speed. In addition, after a predetermined time has elapsed, the gear range is shifted up and the updated cruise speed is returned to the original cruise speed.

Abstract: An engine output control and a constant vehicle speed control switch adapted to effect easy release of the control. The control comprises a throttle grip, a valve link with a return spring and a constant speed control, and a cable connecting these elements. The switch is connected to the cable and is responsive to the tension of an inner wire of the latter.

Abstract: A vehicle speed control system compares current vehicle speed against a target vehicle speed and automatically controls the position of the throttle valve of an engine in accordance with the difference therebetween for reducing the difference. A plurality of brake switches are provided. The system terminates the control of the position when at least one of the switches detects a depression of the brake pedal. If at least one of the switches does not detect the depression of the brake pedal when at least one of the switches detects it, an abnormality signal is generated for blocking commencement of the control of the position of the throttle valve. The abnormality signal is extinguished to enable the commencement of the control when all of the switches detect the depression of the brake pedal.

Abstract: An intermediate governor system is provided that restricts fuel supply in response to road speed. The system is programmable by the owner to an intermediate road speed that the truck cannot exceed in lower gears and a top road speed that can be achieved in the highest gear. The road speed is sensed and compared to a threshold value in the intermediate governor system. When the road speed exceeds the threshold value, the fuel delivered to the engine is restricted by the intermediate governor in order to prevent the engine from exceeding a predetermined engine speed. As the truck driver shifts the gears upward higher road speeds are attained at the same engine speed, the highest gear permitting the highest road speed.

Abstract: In a pneumatic actuator wherein air pressure in a diaphragm compartment (38) is changed by controlling solenoid valves (39, 39 and 41) thereby to output a displacement; an intake solenoid valve (39) has a spring (30h) which penetrates a center part of a fixed iron core (39e) and urges a movable iron core (39f), and the solenoid valves (39, 39 and 41) are mounted on a housing (31) in a triangular disposition with terminal side thereof faced to the housing (31), and besides, one of terminals of each solenoid valve (39 or 41) is secured with each other at a center part of the triangular disposition, and the other terminals are disposed outward of the triangular disposition.

Abstract: A constant-speed control device for a vehicle including a fuel cut device and a suspending device which suspends a fuel cut operation. An actuator is provided for controlling a throttle valve so that the vehicle runs at a constant speed. The fuel cut device carries out a fuel cut when the degree of opening of the throttle valve is smaller than a predetermined value. The suspending device suspends operation of the fuel cut device until the vehicle speed becomes higher than a target value by a predetermined value.

Abstract: A wire mounting structure for a vehicle cruise control has an upper plate 20a of a connector 20 formed with a through-hole 21a and a notch 22, and a lower plate 20b formed with an enlarged hole 21b for receiving the lower end of a rod 6b.

Abstract: A pneumatic constant-velocity running apparatus employing a diaphragm type actuator in which a portion or the whole of a control circuit for the actuator is made of a hybrid IC and the hybrid IC portion with a protector is fixedly mounted onto the outer surface of an housing of the actuator. The apparatus is made compact and further be remarkably improved in an operation accuracy and in noise-proof property as well as in heat radiating property.

Abstract: For constant-speed cruising of a car, a throttle valve in a carburetor of a car is controlled by a motor-driven actuator through an improved variable-length lever mechanism. The variable-length lever mechanism has four arms which are movably connected through four elbows to form a changeable rhombic shaped lever. A linear actuator is interposed between a first pair of the four elbows at first opposing corners so that the distance between the first pair of elbows is expanded or contracted, whereby a radius in swing movement of the variable rhombic shaped lever mechanism is changed.

Abstract: A vacuum actuator for actuating the throttle valve of a vehicle is driven by a surge tank via three valves which are actuated by their respective solenoids. These solenoids are energized by their respective driver circuits. The input signal applied to each solenoid is compared with the output signal delivered from the solenoid by a comparator. The comparators for the solenoids are incorporated in a microcomputer. If any one of the comparators indicates disagreement between its two input signals, and if this disagreement persists for a given period, then the microcomputer deenergizes the corresponding solenoid. A timer for measuring the duration of the disagreement is also incorporated in the microcomputer. For example, the invention can be employed in a velocity-sustaining device for a vehicle.

Abstract: A fail-safe circuit of a fixed speed traveling apparatus wherein there are provided with a control valve for introducing an engine negative pressure to an actuator which controls a throttle opening degree, a release valve for introducing an atmospheric pressure to an actuator and a control circuit for controlling the control valve and the release valve. At brake ON, a first cancel signal is supplied to the control circuit for canceling a fixed speed traveling and to open a current passage of the release valve. A second cancel signal is generated to the control circuit in the case where the current passage of the release valve is open.

Abstract: A speed control device for a motor vehicle uses a conventional DC electric motor. The motor has a freewheeling shaft, unless power is supplied. An advancing linkage connected between the shaft and throttle advances the throttle when power is supplied. A piston in a cylinder is connected to the shaft also, to selectively prevent the shaft from rotating in a retracting direction when power is off. A microcomputer opens a valve to allow the piston to move outward in the cylinder when a speed decrease is desired.

Abstract: A cruise control system for a vehicle having an automatic transmission comprises a constant speed driving device having an actuator for changing the amount of fuel to be fed to the engine, a first controller for controlling the actuator to control the amount of fuel to be fed to the engine so that the vehicle speed is fixed at a set speed, a manually operated switch for delivering to the actuator an override command for changing the vehicle speed from the set speed; a downshifting solenoid for downshifting the automatic transmission; and a second control means which permits the downshifting solenoid to downshift the automatic transmission a predetermined delay time after the manually operated switch is operated.

Abstract: A cruise control system for a vehicle having an automatic transmission comprises a vehicle speed sensor for detecting the actual vehicle speed, an engine output power control mechanism, and a vehicle speed controller which compares the actual vehicle speed detected by the vehicle speed sensor with a set speed and controls the engine output power control mechanism in accordance with the result of the comparison so that the vehicle speed is converged upon the set speed at a predetermined rate. The automatic transmission is caused to downshift when the actual vehicle speed is lowered from the set speed by a predetermined amount while the vehicle speed controller operates to fix the vehicle speed, and when the automatic transmission is shifted down, the predetermined rate of convergence is reduced so that the vehicle speed is converged upon the set speed at a reduced rate.

Abstract: An automatic vehicle cruise speed control system having an electronic control unit for controlling the engine throttle valve in accordance with the vehicle speed to maintain the speed at a substantially constant value. In an operation on a slope, the transmission gear stages are shifted down to a lower stage when the actual vehicle speed is deviated from a desired speed by more than a predetermined value consecutively for a first time period and shifted up to a higher stage when the actual speed is recovered so that the speed deviation is smaller than the predetermined value for a second time period which is greater than the first time period.

Abstract: A vehicle speed control apparatus for automatically maintaining the vehicle speed of an automobile at a desired speed without the operation of the accelerator pedal, which apparatus includes an increase switch and a speed-increase means for continuously increasing the opening degree of the throttle valve when the increase switch is operated. When the increase switch is operated, the desired speed changes in response to the increasing actual speed of the automobile. The desired speed is finally determined to be the value of the actual vehicle speed just before the increase switch returns to the non-operating condition.

Abstract: Two embodiments of automatic speed control devices for motorcycles that permits release of the device from automatic mode in response to throttle closing movement of the accelerator grip. In one embodiment, the release is effective by permitting a protective sheath of a wire actuator of the throttle mechanism to move in response to throttle closing movement of the accelerator grip and this movement is employed to actuate a switch. In another embodiment, a control wire and surrounding housing afford a switch that is closed when the accelerator grip is moved in a closing direction.

Abstract: A cruise control system for an automotive vehicle which automatically controls the throttle valve opening to maintain the vehicle speed constant without a driver's operation of the accelerator pedal once the vehicle speed is set to a desired value, is designed so that acceleration at the time of operating an increase set switch or resume switch is increased to ensure a comfortable drive while ascending a long slope. To this end, the cruise control system is provided with an overdrive controller which releases overdrive at the time of operating the increase set switch and resumes the overdrive at the time of releasing the operation of the increase set switch, or an overdrive controller which releases overdrive at the time of operating the resume switch when the vehicle speed at that time is sufficiently lower than the set speed and resumes the overdrive when the vehicle speed has been restored substantially to the set speed.