Patent application number | Description | Published |
20090011895 | Controller of Driver for Vehicles - A control apparatus for a vehicular drive system including (a) a differential portion having a differential mechanism operable to distribute an output of an engine to a first electric motor and a power transmitting member, a second electric motor disposed in a power transmitting path between the power transmitting member and a vehicle drive wheel, and a switching clutch and a switching brake provided in the differential mechanism and operable to limit a differential function of the differential portion, and (b) a step-variable automatic transmission portion constituting a part of the power transmitting path and operable to perform a clutch-to-clutch shifting action by a releasing action of a coupling device and an engaging action of another coupling device, the control apparatus including a step-variable shifting control configured to change an amount of racing of an input speed of the automatic transmission portion during the clutch-to-clutch shifting action, depending upon whether the differential function of the differential portion is limited by the switching clutch and brake. | 01-08-2009 |
20090029819 | CONTROLLER OF DRIVING DEVICE FOR VEHICLE - A transmission mechanism including a switching clutch or brake that is switchable between a continuously-variable shifting state and a step-variable shifting state, and has both an advantage of improved fuel economy provided by a transmission, the speed ratio of which is electrically variable, and an advantage of high power transmitting efficiency provided by a gear type power transmitting device constructed for mechanical transmission of power. While a clutch-to-clutch shifting action of an automatic transmission portion is in a tie-up state, a differential portion is placed in a continuously-variable shifting state by switching control, and engine speed is changed under the control of hybrid control, so as to prevent a drop of the engine speed for thereby reducing a shock of the shifting action, unlike in a non-continuously-variable shifting state of the differential portion in which the engine speed is directly influenced by the tie-up state. | 01-29-2009 |
20090037061 | CONTROL DEVICE FOR VEHICLE DRIVE DEVICE - A control apparatus for a vehicular drive system including a differential mechanism including an electric motor. The drive system includes a switching clutch and switching brake to switch the transmission mechanism between a continuously-variable shifting state and a step-variable shifting state. A shifting control mechanism changes a manner of controlling shifting action of the transmission mechanism during shifting action of an automatic transmission portion, for reducing a shifting shock, depending upon whether a differential portion is placed in the continuously-variable shifting state in which engine speed is variable due to differential function irrespective of rotating speed of power transmitting member, or the non-continuously-variable shifting state in which the engine speed is more difficult to be variable than in the continuously-variable shifting state. | 02-05-2009 |
20090048050 | CONTROL DEVICE FOR VEHICLE DRIVE DEVICECONTROL DEVICE FOR VEHICLE DRIVE DEVICE - A drive apparatus for vehicle is disclosed having a coupling device (switching clutch B | 02-19-2009 |
20090076694 | CONTROLLER OF DRIVER FOR VEHICLE - A control apparatus for a vehicular drive system arranged to electrically transmit a portion of an output force of an engine through an electric path, which control apparatus is configured to reduce loads of components associated with the electric path and to restrict a temperature rise of the components associated with the electric path, making it possible to reduce the required size of a cooling system. | 03-19-2009 |
20090088290 | VEHICLE DRIVE DEVICE CONTROLLER - A vehicle drive apparatus is disclosed having a differential mechanism and an electric motor provided in the differential mechanism for miniaturizing the drive apparatus or improving fuel consumption while suppressing the occurrence of shifting shocks. A switching clutch C | 04-02-2009 |
20090248265 | VEHICLE DRIVE DEVICE CONTROLLER - A control device for a vehicle drive apparatus that includes a differential mechanism and an electric motor provided in the differential mechanism, which can be miniaturized in structure with improved fuel economy and enabling suppression of occurrence in switching shocks. With a provision of a switching clutch or a switching brake, a shifting mechanism is placed in either a continuously variable shifting state or a step variable shifting state. During a shifting of an automatic shifting portion, an engaging control variable control alters a method of learning an engaging pressure. This allows a rotation speed of a transmitting member to achieve a given variation during the shifting, depending on a continuously variable shifting state and a non-continuously variable shifting state, for thereby providing a balance between an improvement in a feeling and a suppressing of shifting shocks. | 10-01-2009 |
20090318261 | VEHICLE DRIVE DEVICE CONTROLLER - In a vehicle driving apparatus including a differential mechanism capable of executing a differential action, a control device can make the driving apparatus small-size, improve fuel consumption, and increase output torque. A transmission mechanism can be switched to a continuously variable shifting state and a step variable shifting state, by a switching clutch or a switching brake. Also, with a switch control bringing the switching clutch into a half-engaged state, during an engine startup/running, while the differential portion is allowed to operate as the electrically controlled continuously variable transmission, a reaction force against an engine torque is generated by the half-engaged switching clutch. Thus, the engine torque not less than the torque bearable by a first electric motor can be inputted into the differential portion, thereby increasing the output torque. | 12-24-2009 |
20100041511 | CONTROL DEVICE OF VEHICLE-USE DRIVE DEVICE - A transmission mechanism including a switching clutch or brake is switchable between a continuously-variable shifting state and a step-variable shifting state, and provides improved fuel economy by a transmission with an electrically variable speed ratio and high power transmitting efficiency by a gear type power transmitting device constructed for mechanical transmission of power. During four-wheel drive vehicle running with second drive wheels driven by a third electric motor, a switching control switches a differential portion to a continuously-variable shifting state, so that an operating speed of a first electric motor operated by an output of an engine as an electric generator is controlled to assure a higher degree of electricity generating efficiency, owing to the differential function of the differential portion, than when the differential portion is placed in a non-continuously-variable shifting state in which first electric motor speed and engine speed are determined by vehicle running speed. | 02-18-2010 |
20100151988 | CONTROLLER OF DRIVE DEVICE FOR VEHICLE - A control device is provided for a vehicular drive apparatus, having a differential mechanism and a transmission, for miniaturizing the differential mechanism and/or providing improved fuel economy while preventing a busy shift. With the provision of a switching clutch C | 06-17-2010 |