Patent application number | Description | Published |
20090118095 | CONTROLLER OF POWER TRANSMISSION - To provide a control system for a power transmission system capable of speed change control in conformity of a deceleration demand. | 05-07-2009 |
20090124454 | CONTROLLER OF VEHICLE AUTOMATIC TRANSMISSION - A control system capable of ensuring an engine braking force and a drive force even in case a failure occurs in a speed change ratio control or a deceleration control of an automatic transmission. The control system includes: a failure detecting mechanism for detecting a failure to set any of predetermined speed change ratios; and a speed change commanding mechanism for outputting a speed change command to set a speed change ratio larger than the current speed change ratio in accordance with a signal outputted when the failure detecting mechanism detects the failure. | 05-14-2009 |
20090131216 | CONTROLLER FOR VEHICLE DRIVE DEVICE - A vehicle drive unit control system. The vehicle includes a prime mover arranged on a power transmission route from a continuously variable transmission to a wheel, a clutch mechanism arranged on a first route from the prime mover to the wheel, and a shift range or shift position can be shifted selectively between a drive range or drive position where a power can be transmitted through the first route and a non-drive range or non-drive position where a power cannot be transmitted through the first route. The control system includes a vehicle speed control demand judging mechanism judging a vehicle speed control demand in case of shifting the shift range or shift position from the non-drive range or non-drive position to the drive range or drive position; and a prime mover controller controlling torque of the prime mover based on the judged vehicle speed control demand. | 05-21-2009 |
20090137360 | CONTROLLER OF VEHICLE DRIVING DEVICE - To execute a manual speed change to apply an engine brake in good response, and to ensure sufficient braking force in a drive unit having a continuously variable speed change unit and a geared speed change unit. | 05-28-2009 |
20090137361 | CONTROLLER FOR VEHICLE DRIVE DEVICE - A control system for a drive unit of a vehicle, including a reaction force establishing device controlling a speed change ratio of a continuously variable transmission, and a clutch mechanism arranged on a power transmission route from the continuously variable transmission to a wheel and in which a torque capacity thereof is controllable. A first input torque control mechanism lowers a torque to be inputted to the clutch mechanism through the continuously variable transmission, by controlling a torque of the reaction force establishing device while the torque capacity of the clutch mechanism is being controlled. The system reduces a change in a torque inputted to a clutch mechanism, in case of carrying out a speed change operation of a continuously variable transmission and engaging the clutch mechanism. | 05-28-2009 |
20090236159 | HYBRID VEHICLE DRIVE DEVICE CONTROL DEVICE - A control system for a drive unit of a hybrid vehicle, which is capable of preventing an uncomfortable feeling, when a vehicle is driven by a power of an electric motor. The control system includes an electric motor, another power unit other than the electric motor, and a transmission, including a speed change inhibiting mechanism for inhibiting a speed change operation of the transmission in case the vehicle is run by a power of the electric motor. | 09-24-2009 |
20090291801 | CONTROLLER OF VEHICLE DRIVING DEVICE - A control system for a drive unit of a vehicle, in which a power distribution mechanism is arranged on a route from a prime mover to a wheel, and a transmission is arranged on an output side of the power distribution mechanism. The control system includes a revolution frequency controller that restrains a variation in a revolution frequency of the prime mover by controlling a revolution frequency of the reaction force establishing device until a predetermined time elapses since a commencement of a shifting operation of the transmission. The control system is capable of restraining a variation in an output torque, in case of carrying out a shifting operation of a transmission arranged on an output side of a prime mover. | 11-26-2009 |
20120004064 | CONTROL DEVICE FOR POWER TRANSMISSION DEVICE - It is provided a control device for a power transmission device including a regenerative electric motor via a stepped shifting mechanism, wherein when a shift of the stepped shifting mechanism is performed in a regenerative state of the electric motor, the control device for a power transmission device increases an input shaft rotation speed of the stepped shifting mechanism through hydraulic control before a shift ending period, and, in the shift ending period, restrains an increase of the input shaft rotation speed through the hydraulic control and controls an input shaft rotation speed of the stepped shifting mechanism with the electric motor to be a target rotation speed after the shift. | 01-05-2012 |
20120072064 | CONTROL DEVICE FOR VEHICLE POWER TRANSMISSION DEVICE - It is provided a control device for a vehicle power transmission device having a stepped automatic transmission making up a portion of a power transmission path between an engine and a drive wheel, the control device setting a shift point of the automatic transmission in accordance with a request drive force of a driver and a vehicle speed, the control device setting a shift point of the automatic transmission in accordance with a rotation speed of the engine and a vehicle speed instead of the request drive force, if a vehicle is in a predetermined fuel consumption priority running state. | 03-22-2012 |
20120108384 | CONTROL DEVICE FOR VEHICLE DRIVE DEVICE - A control device for a vehicle drive device in a vehicle having a power source including an engine and a stepped automatic shifting portion making up a part of a power transmission path between the power source and a drive wheel, the control device providing input torque limiting control if a downshift of the automatic shifting portion is executed during an accelerator depressing operation, to limit an input torque to the automatic shifting portion before initiation of an inertia phase in the downshift as compared to the case of not executing the downshift, wherein in the input torque limiting control, if an accelerator variation before the start of the downshift is equal to or less than a predetermined accelerator variation limit, the control device limits the input torque before the initiation of the inertia phase to the input torque at the time of a shifting output commanding the execution of the downshift, and wherein if an accelerator variation before the start of the downshift is greater than the accelerator variation limit, the control device limits the input torque before the initiation of the inertia phase equal to or less than a predetermined input torque limit value larger than the input torque at the time of the shifting output. | 05-03-2012 |