摘要:
A vehicle driving force control device includes: a brake unit (13) configured to generate a brake force of a vehicle; a stroke amount detecting unit configured to detect a stroke amount of a brake pedal (17) of the vehicle; a monitoring unit configured to monitor whether generation of the brake force of the brake unit (13) is abnormal; and a creep torque controlling unit configured to increase a reduction amount of a creep torque of the vehicle as the stroke amount increases, when the monitoring unit determines that the generation of the brake force in the brake unit is abnormal.
摘要:
A control system (a control valve CV and an electronic control unit ECU) for an automatic transmission TM performs an automatic control to select and establish a speed ratio from a plurality of speed ratios in response to the condition of a vehicle which is set in a drive range. This control system creates a neutral condition if the vehicle is stationary with the brake of the vehicle being actuated and the accelerator for the engine being turned off while the transmission is set in a drive range. The control system is also equipped with an engine output control device 50 that adjusts the engine output which is input into the transmission when the transmission in the drive range leaves the neutral condition and starts to establish any of the speed ratios in the drive range.
摘要:
Disclosed is a driving engine which drives both consumers and via a clutch mechanism drive wheels. An electronic control device determines an input torque of the clutch mechanism when a brake pedal is actuated and actuates the clutch mechanism in the opening direction whenever the brake pedal reaches a defined value which depends on the input torque.
摘要:
A control system, which creates a neutral condition if a vehicle is stationary with the brake of the vehicle being actuated and the accelerator for the engine being turned off while the transmission is set in a drive range, is equipped with a brake switch 36, which detects the operational condition of the brake, and a output rotation sensor 40, which detects the rotational speed of the output member of the transmission. If the control system detects the rotation of the output member by the output rotation sensor 40, then the control system terminates the neutral condition in spite of the operational condition of the brake, which is detected by the brake switch 36.
摘要:
An automatic transmission control apparatus has a vehicle speed detector (Sn4), an accelerator pedal operation detector (Sn1), a brake pedal operation detector (Sn6), a clutch hydraulic servo (C-1) that is neutral-controlled, a brake hydraulic servo (C-1) that is hill holding-controlled, and a control device for controlling the fluid pressure supplies to the two servos. The control device selectively changes the start timing of the fluid pressure supply control. If it is determined that the vehicle is stopped and that the vehicle is not on an uphill, the control device causes a pressure reducing device and a pressure supplying device to simultaneously start reducing the fluid pressure supply to the clutch servo and supplying fluid pressure to the brake servo, respectively. If it is determined that the vehicle is on an uphill, the control device causes the pressure supplying device to start supplying fluid pressure to the brake servo and, after a predetermined time period, causes the pressure reducing device to start reducing the fluid pressure supply to the clutch servo.
摘要:
A control system for an automatic transmission, comprising: a fluid transmission unit for transmitting the rotation of an engine to a speed change unit (16); a clutch (C 1 ) adapted to be applied when a forward running range is selected; a one-way clutch (F 2 ) adapted to be locked, when the clutch is applied, for establishing a forward first speed; a brake (B 1 ) for locking the one-way clutch, when locked, to block the backward rotation of the output shaft (23) of the speed change unit; a first hydraulic servo (91) for applying the clutch when fed with an oil pressure; a second hydraulic servo (92) for applying the brake when fed with an oil pressure; and a control unit (94) for controlling the oil pressures to be fed to the first hydraulic servo and the second hydraulic servo. The control unit includes: oil pressure feed means for starting the feed of the oil pressure to the second hydraulic servo if the forward running range is selected, if the vehicle is substantially in a stop state, if the engine is in an idling state and if the foot brake is in an active state; and pressure reducing means for starting the pressure reduction of the first hydraulic servo at a set timing and starting the shift of the applied state to the slipping state of the clutch at and after the timing, in which the movement of the piston in the piston stroke of the second hydraulic servo ends so that the application of the brake is started.
摘要:
An automatic transmission control apparatus has a vehicle speed detector, an accelerator pedal operation detector, a brake pedal operation detector, a clutch hydraulic servo that is neutral-controlled, a brake hydraulic servo that is hill holding-controlled, and a control device for controlling the fluid pressure supplies to the two servos. The control device selectively changes the start timing of the fluid pressure supply control. If it is determined that the vehicle is stopped and that the vehicle is not on an uphill, the control device causes a pressure reducing device and a pressure supplying device to simultaneously start reducing the fluid pressure supply to the clutch servo and supplying fluid pressure to the brake servo, respectively. If it is determined that the vehicle is on an uphill, the control device causes the pressure supplying device to start supplying fluid pressure to the brake servo and, after a predetermined time period, causes the pressure reducing device to start reducing the fluid pressure supply to the clutch servo.
摘要:
An anti creep braking system for a vehicle. A force transmission member is drivingly coupled to a part of the brake pedal and transmits braking force to a braking force generation system. A braked member is selectively braked by a braking device, and is driven by the brake pedal with a one direction force transmission device being interposed on the path of transmission of force between the brake pedal and the braked member. The sense of force transmission of the one direction force transmission device is such that, when the movement of the braked member with respect to the vehicle is prevented by the braking device, the brake pedal may be further depressed to increase vehicle braking action without transmitting substantial force to the braked member, but may not be moved backwards to reduce vehicle braking action. A control system selectively controls the braking device so as to put it into operation and to release it from operation according to the operational conditions of the vehicle effected by the driver of the vehicle and/or skidding condition of the vehicle.
摘要:
An automatic transmission control apparatus is provided with a brake switch, a brake fluid pressure detecting section, a range position detecting section, a neutral control section and a prohibiting section. The brake switch is configured to output an on-signal when a brake pedal is depressed and otherwise output an off-signal. The brake fluid pressure detecting section is configured to detect a brake fluid pressure corresponding to a brake pedal depression force. The range position detecting section is configured to detect if a traveling range of an automatic transmission is selected. The neutral control section is configured to start a neutral control that puts the automatic transmission into a neutral state when the brake fluid pressure detected by the brake fluid detecting section exceeds a start threshold value while the range position detecting section detects that the traveling range is selected, and to end the neutral control when the brake fluid pressure falls below an end threshold value while the neutral control is being executed, with the start and end threshold values being set to values that are higher than the brake fluid pressure occurring when the brake switch starts outputting the on-signal. The prohibiting section is configured to prohibit the neutral control from being subsequently started again, after the neutral control has been started by the neutral control section, regardless of the brake fluid pressure detected by the brake fluid pressure detecting section until the brake switch outputs the off-signal.