| Aisin Al Co., Ltd. Patent applications |
| Patent application number | Title | Published |
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| 20110282557 | DRIVE STATE CONTROL APPARATUS FOR VEHICLE - An on-demand-type drive state control apparatus for a vehicle is provided. In the case where acceleration slippage occurs at drive wheels (rear wheels) of a vehicle when a drive system is in a two-wheel drive state, the drive system is switched from the two-wheel drive state to a four-wheel drive state. That is, the maximum transmittable torque of a multi-disc clutch mechanism increases from “0” to a predetermined value. In the four-wheel drive state, the maximum transmittable torque decreases stepwise from the present value by a predetermined value every time the vehicle travels over a predetermined distance in a state in which none of the wheels cause acceleration slippages. That is the clutch drive current supplied to the multi-disc clutch mechanism decreases gradually (stepwise or in a plurality of steps), and the drive torque distributed to the front wheels (rear wheels) decreases (increases) gradually. | 11-17-2011 |
| 20110257858 | DRIVE STATE CONTROL APPARATUS FOR VEHICLE - A drive state control apparatus is applied to a vehicle which has not only a transfer including a multi-disc clutch mechanism but also a changeover mechanism interposed in an axle and which can be switched between 2WD and 4WD. When a 2WD-to-4WD changeover condition is satisfied, the multi-disc clutch is immediately switched from a “decoupled state” to a “coupled state.” Meanwhile, a connecting operation of the changeover mechanism is started upon establishment of a state in which left and right rear wheels have no acceleration slippage, and a state in which rotational speeds of first and second axles on opposite sides of the changeover mechanism are approximately equal to each other. In addition, in the case where the left and right rear wheels have acceleration slippage after the 2WD-to-4WD changeover condition has been satisfied, an E/G output reduction control is executed. Thus, the connecting operation can be performed smoothly. | 10-20-2011 |
| 20110251017 | VEHICULAR POWER TRANSMISSION CONTROL APPARATUS - When it is determined that a driver requests a deceleration of a vehicle (t | 10-13-2011 |
| 20110238276 | POWER TRANSMISSION CONTROL APPARATUS FOR VEHICLE - First and second clutches correspond to systems which include “first gear” and “second gear,” respectively. When the temperature of the first clutch at the time of start of the vehicle is lower than a first temperature, only the first clutch is used as a start clutch for driving the vehicle. When the temperature of the first clutch is not lower than the first temperature but is lower than a second temperature, both the first and second clutches are used as the start clutch. When the temperature of the first clutch is equal to or higher than the second temperature, only the second clutch is used as the start clutch. Thus, the higher the temperature of the first clutch, the smaller the load acting on the first clutch. When the temperature of the second clutch is high, engine torque is reduced, and a warning is issued. | 09-29-2011 |
| 20110061486 | MANUAL TRANSMISSION FOR VEHICLE - A six speed M/T includes four shafts, which are an input shaft A | 03-17-2011 |
| 20110048149 | MANUAL TRANSMISSION FOR VEHICLE - A six speed M/T includes four shafts, which are an input shaft A | 03-03-2011 |
| 20100319486 | TRANSMISSION - A transmission for a vehicle is provided with a plurality of gears supported on shaft members rotatably supported in a case to extend in an axial direction, first and second large-diameter gears soaked at lower parts thereof in lubrication oil stored in a lubrication oil storage region formed at a lower portion of the case for scooping upward lubrication oil during rotations, and first and second receivers arranged to extend in the axial direction of the shaft members for collecting the upwardly scooped lubrication oils to supply the same to parts to be lubricated. The first and large-diameter gears are arranged respectively on one and the other end sides of the plurality of gears in the axial direction. Other gears of the plurality of gears except for the first and second large-diameter gears are formed to diameters that hardly agitate the lubrication oil in the lubrication oil storage region. | 12-23-2010 |
| 20100262324 | VEHICULAR POWER TRANSMISSION CONTROL APPARATUS - An apparatus comprises a changeover mechanism which is able to change a connection state of an electric motor output shaft to any one of “an IN-Connection State” in which a power transmission path is provided between a transmission input shaft and the electric motor output shaft, “an OUT-Connection State” in which a power transmission path is provided between the transmission output shaft and the electric motor output shaft, and “a neutral state” in which no transmission path therebetween is provided. When a kick-down-condition is satisfied, a changeover operation for changing an electric motor connection state to the OUT-Connection State is firstly performed. Thereafter, a gear position shifting operation for increasing a transmission reduction ratio is performed. After the kick-down-condition satisfied, an E/G side output torque Te and a M/G side output torque Tm is adjusted in such a manner that a sum Ts of Te and Tm continues to increase. | 10-14-2010 |
| 20100262323 | VEHICULAR POWER TRANSMISSION CONTROL APPARATUS - An apparatus, applied to a vehicle having an internal combustion engine and an electric motor as power sources, comprises a changeover mechanism which is able to change a connection state of an electric motor output shaft to any one of “an IN-Connection State” in which a power transmission path is provided between a transmission input shaft and the electric motor output shaft, “an OUT-Connection State” in which a power transmission path is provided between the transmission output shaft and the electric motor output shaft, and “a neutral state” in which no transmission path therebetween is provided. When a changeover condition is satisfied, a period is provided in which a sum Ts of an internal-combustion-engine-side-output-torque Te and an electric-motor-side-output-torque Tm coincides with a required driving torque Tr, and an electric motor torque continues to be zero. | 10-14-2010 |
| 20100234172 | VEHICULAR POWER TRANSMISSION CONTROL APPARATUS - An apparatus comprises a changeover mechanism which is able to change a connection state to any one of three states, i.e., “an IN-Connection State” in which a power transmission path is provided between a transmission input shaft and the electric motor output shaft, “an OUT-Connection State” in which a power transmission path is provided between a transmission output shaft and the electric motor output shaft, and “a neutral connection state” in which no transmission path therebetween is provided. At a timing (time t | 09-16-2010 |
| 20100234171 | VEHICULAR POWER TRANSMISSION CONTROL APPARATUS - An apparatus comprises a changeover mechanism which is able to change a connection state of an electric motor output shaft to any one of states including, “an IN-Connection State” in which a power transmission path is provided between a transmission input shaft and the electric motor output shaft, “an OUT-Connection State” in which a power transmission path is provided between the transmission output shaft and the electric motor output shaft, and “a neutral state” in which no transmission path therebetween is provided. The changeover is carried out based on a combination of a vehicle speed V and a required driving torque T. When the vehicle starts to drive, “the IN-Connection State” is selected. After the start of the vehicle and while the vehicle speed V is increasing, the changeovers to “the OUT-Connection State”, “the IN-Connection State”, and “the neutral state” are sequentially carried out. | 09-16-2010 |
