摘要:
A clutch mechanism is configured to selectively change between a first power transmission path and a second power transmission path. The first power transmission path is configured to transmit torque to an output shaft via a transmission mechanism. The second power transmission path is configured to transmit the torque to the output shaft via a continuously variable transmission mechanism. An electronic control unit is configured to: (a) selectively change a power transmission path during traveling to one of the first power transmission path and the second power transmission path by controlling the clutch mechanism; and (b) in changing the power transmission path by controlling the clutch mechanism, control an operating point of the internal combustion engine during a change of the power transmission path so that the operating point crosses over an optimum fuel, consumption line of the internal combustion engine.
摘要:
In a controller for a vehicle transmission in which a continuously variable transmission mechanism that is able to continuously change its speed ratio and a transmission mechanism having a constant speed ratio are provided in parallel with each other between an input shaft to which torque is transmitted from a driving force source and an output shaft that outputs torque to a drive wheel, the vehicle transmission including a friction engagement mechanism and an intermeshing engagement mechanism, the friction engagement mechanism selectively transmitting torque from the input shaft to the transmission mechanism, the intermeshing engagement mechanism arranged in series with the friction engagement mechanism on a downstream side of the friction engagement mechanism in a torque transmission direction from the input shaft toward the output shaft, the intermeshing engagement mechanism setting the transmission mechanism to a state where torque is transmittable between the input shaft and the output shaft, in changing from a state where both the friction engagement mechanism and the intermeshing engagement mechanism are released and the transmission mechanism is not able to transmit torque to a state where the intermeshing engagement mechanism is engaged and the transmission mechanism is able to transmit torque to the output shaft, a torque capacity of the friction engagement mechanism is configured to be increased to a torque capacity to such extent that the transmission mechanism rotates without a delay of start of engagement of the intermeshing engagement mechanism.
摘要翻译:在用于车辆变速器的控制器中,其中能够连续改变其速比的无级变速机构和具有恒定速比的变速机构在输入轴之间并联设置,转矩从 驱动力源和向驱动轮输出扭矩的输出轴,所述车辆变速器包括摩擦接合机构和啮合接合机构,所述摩擦接合机构选择性地将扭矩从所述输入轴传递到所述传动机构,所述啮合接合机构被布置 与摩擦接合机构的下游侧的摩擦接合机构在从输入轴朝向输出轴的转矩传递方向上串联的啮合机构,将传动机构设定为在输入轴和 o 输出轴在从摩擦接合机构和啮合啮合机构解除的状态变化时,变速机构不能将扭矩传递到啮合啮合机构的状态,传动机构能够传递扭矩 对于输出轴,摩擦接合机构的扭矩能力被构造成增加到扭矩能力,使得传动机构在没有相互啮合接合机构的接合开始的延迟的情况下旋转。
摘要:
A control apparatus for controlling a linear solenoid by controlling a driving current supplied to the linear solenoid through a feedback control. The feedback control is executed by a feedback control system having parameters that are determined in accordance with an ILQ design method. In a frequency characteristic of a gain of a transfer function representing a ratio of an output to a disturbance in the feedback control system, the gain is lower than 0[dB] throughout all frequency ranges.
摘要:
In a region in which a rate of change in slip ratio of a transmission belt with respect to a change in input torque exceeds a permissible slip ratio rate of change set in advance, a steep change in the slip ratio is suppressed by limiting the rate of change in the input torque.
摘要:
A control apparatus for a vehicle is provided. The vehicle includes an engine, a dog clutch and a friction clutch. The dog clutch is configured to transmit power or interrupt transmission of power in a power transmission path that transmits power of the engine to a drive wheel. The dog clutch includes a synchromesh mechanism. The friction clutch is configured to transmit power or interrupt transmission of power in the power transmission path between the engine and the dog clutch. The control apparatus includes: an electronic control unit. The electronic control unit is configured to, when the synchromesh mechanism is operated in order to engage the dog clutch in a state where the vehicle is stopped and the friction clutch is released, increase a rotation speed of the engine as compared to when the synchromesh mechanism is not operated.
摘要:
A power transmission system includes a first transmission provided in a first power transmission path, a second transmission provided in a second power transmission path, a first engagement device, a second engagement device, a third engagement device, a fail-safe valve, and an electronic control unit. The third engagement device selectively connects or interrupts one of the first and second power transmission paths. The electronic control unit is configured to, during traveling in a state where the third engagement device is released, output hydraulic pressure commands for simultaneous engagement of the first engagement device and the second engagement device. The electronic control unit is configured to, when it is determined that both the first engagement device and the second engagement device are engaged, prohibit traveling using the one of the first and second power transmission paths which is selectively connected or interrupted by the third engagement device.
摘要:
A hydraulic control system for a vehicle having a continuously variable transmission in which a torque transmitting capacity thereof is changed hydraulically, and an engagement device which is connected to the continuously variable transmission in series and in which a torque transmitting capacity thereof is changed hydraulically. The hydraulic control system comprises a selecting means that selects a command pattern for setting an engagement pressure of the engagement device out of a plurality of patterns when an initial pressure is lower than a steady pressure for a normal running of the vehicle. The selecting means is configured to select the command pattern in such a manner that the torque transmitting capacity of the engagement device does not exceeds the torque transmitting capacity of the continuously variable transmission, based on at least any of conditions of the initial pressure that is lowered to be lower than the steady pressure, and a rotational speed of the continuously variable transmission.
摘要:
Vehicle control device of vehicle including lockup clutch configured to directly couple between input/output rotating members of fluid power transmission device transmitting power of engine to automatic transmission, vehicle control device engaging lockup clutch when running state of vehicle in predetermined running state, vehicle control device providing lockup clutch pressure learning control of learning oil pressure of lockup clutch used in start-time lockup slip control in which lockup clutch placed in slip-engaged state toward engaged state at start of vehicle based on rotation speed of engine at time of engagement of lockup clutch, vehicle control device inhibiting engagement of lockup clutch when running state of vehicle in predetermined running state and also in second predetermined running state, vehicle control device engaging lockup clutch after running state of vehicle goes out of second predetermined running state, and providing lockup clutch pressure learning control in engaging process of lockup clutch.