摘要:
A declaration control apparatus and method for a vehicle, which performs deceleration control such that a deceleration acting on the vehicle becomes equal to a target deceleration by an operation of a brake system which applies a braking force to the vehicle and a shift operation which shifts a transmission of the vehicle into a relatively low speed or speed ratio, increases the target deceleration over time at a predetermined gradient to a predetermined value when a determination that there is a need to shift the transmission into a relatively low speed or speed ratio has been made, and after the target deceleration reaches the predetermined value, maintains the target deceleration at a generally constant value. As a result, a deceleration transitional characteristic of the vehicle is able to be improved.
摘要:
A declaration control apparatus and method for a vehicle, which performs deceleration control such that a deceleration acting on the vehicle becomes equal to a target deceleration by an operation of a brake system which applies a braking force to the vehicle and a shift operation which shifts a transmission of the vehicle into a relatively low speed or speed ratio, increases the target deceleration over time at a predetermined gradient to a predetermined value when a determination that there is a need to shift the transmission into a relatively low speed or speed ratio has been made, and after the target deceleration reaches the predetermined value, maintains the target deceleration at a generally constant value. As a result, a deceleration transitional characteristic of the vehicle is able to be improved.
摘要:
A drive control device for a hybrid vehicle is provided with a differential device including four rotary elements; and an engine, first and second electric motors and an output rotary member which are respectively connected to the four rotary elements. One of the four rotary elements is constituted by a rotary component of a first differential mechanism and a rotary component of a second differential mechanism selectively connected through a clutch, and one of the rotary components is selectively fixed to a stationary member through a brake. The drive control device comprises: an engagement control portion configured to place the clutch or the brake in a slipping state in a decelerating state of the hybrid vehicle in a hybrid drive mode in which the engine is operated. The first differential mechanism is provided with a first rotary element connected to the first electric motor, a second rotary element connected to the engine, and a third rotary element connected to the output rotary member, while the second differential mechanism is provided with a first rotary element connected to the second electric motor, a second rotary element, and a third rotary element, one of the second and third rotary elements of the second differential mechanism being connected to the third rotary element of the first differential mechanism. The clutch is configured to selectively connect the second rotary element of the first differential mechanism, and the other of the second and third rotary elements of the second differential mechanism which is not connected to the third rotary element of the first differential mechanism, to each other, while the brake is configured to selectively fix the other of the second and third rotary elements of the second differential mechanism which is not connected to the third rotary element of the first differential mechanism, to the stationary member.
摘要:
It is provided a control apparatus for a vehicle provided with an electric motor power source, an inverter, an electric motor, an inverter smoothing capacitor, and a step-variable automatic transmission, the control apparatus being configured to implement a torque reduction control, and to implement a torque reduction limitation control to limit reduction of an output torque of the electric motor to within a range in which a terminal voltage of the inverter smoothing capacitor will not exceed a predetermined withstanding voltage of the inverter and to limit the reduction of the output torque by limiting an amount of change of the output torque per unit time during the reduction of the output torque in the torque reduction control, to within a predetermined torque reduction rate limiting range, and wherein the torque reduction rate limiting range is determined upon initiation of a shifting action of the automatic transmission.
摘要:
Providing a control device of a hybrid vehicle capable of reducing a rattling noise without changing an engine rotation speed.If the second electric motor torque TM2 is within the rattling noise occurrence region G, the engine rotation fluctuation suppression control (at least one of the EGR amount suppression control, the self-EGR amount suppression control, the lean-burn control, and the ignition delay control) is provided to suppress the engine rotation fluctuations as compared to during normal running while the second electric motor torque TM2 is out of the rattling noise occurrence region G and, therefore, the engine rotation fluctuations can be suppressed to reduce the a rattling noise without changing an engine rotation speed NE. Thus, the rattling noise can be reduced without giving an uncomfortable feeling to a user due to a change in the engine rotation speed NE.
摘要:
A target deceleration for running on a curved road ahead of a vehicle is obtained, based on a driver's intention which is input or estimated, and a driver's driving skill level which is input or estimated; and deceleration control is performed so that deceleration applied to the vehicle becomes equal to the target deceleration. In a case where the driver's intention is to cause the vehicle to respond to driving operation relatively quickly, the target deceleration may be set to a relatively small value; and in a case where the driving skill level is relatively high, the target deceleration is set to a relatively small value. Further, the target deceleration is decided based on a state of a road where the vehicle runs.
摘要:
A deceleration control apparatus for a vehicle, which performs deceleration control on the vehicle by an operation of a brake system that applies a braking force to the vehicle and a shift operation which shifts a transmission of the vehicle into a relatively low speed or speed ratio, changes, as the deceleration control, the braking force applied to a non-driven wheel of the vehicle and the braking force applied to a driven wheel of the vehicle based on a deceleration F applied to the vehicle and an engine braking force Fe that acts on the driven wheel of the vehicle. The engine braking force includes inertia force and changes in the engine braking force produced by a shift, as well as engine braking force produced as a result of the accelerator being turned off.
摘要:
In a deceleration control method for a vehicle, by which deceleration control of the vehicle is performed based on a distance between the vehicle had an obstacle including a preceding vehicle ahead of the vehicle, a target deceleration at which the vehicle is to be decelerated is obtained based on the distance; a speed or speed ratio that will apply a deceleration equal to, or less than, the target deceleration to the vehicle is selected as the speed or speed ratio of a transmission of the vehicle during a shift operation; and the deceleration control is executed by an operation of a brake system which applies a braking force to the vehicle and a shift operation which shifts the transmission of the vehicle into a relatively low speed or speed ratio.
摘要:
A deceleration control apparatus for a vehicle provided with a brake system for generating braking force in the vehicle, and a transmission, controls the brake system and the transmission such that a deceleration acting on the vehicle matches a target deceleration set as a deceleration to be applied to the vehicle by a brake operation of the brake system and a shift operation which shifts the transmission into a relatively low speed or speed ratio.
摘要:
It is an object of the invention to provide a shift control apparatus which does not cause a vehicle driver to feel uncomfortable when shift control means resumes normal shift control using a predetermined shift pattern. Where return-to-normal determining means 105 determines that a condition or conditions under which the shift control means 102 resumes shift control using a MEDIUM MODE shift pattern is/are satisfied, return-to-normal permitting means 116 permits the shift control means 102 to resume the shift control using the MEDIUM MODE shift pattern when an output control member release determining means 108 determines that an accelerator pedal 58 has been released. In this arrangement, the driver does not feel uncomfortable even if the transmission is shifted up immediately after the shift control means 102 resumes the shift control using the MEDIUM MODE shift pattern.