Aisin Ai Co., Ltd.

Yousuke Hayashi

Kan Sasaki

Toshio Tanba

Takeshige Miyazaki

Hiroki Hatori

Yuichi Fukuhara

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 &#x201c;a neutral state&#x201d; 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.

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 from alternatives consisting 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 &#x201c;a neutral connection state&#x201d; in which no transmission path therebetween is provided. The changeover is carried out based on a combination (area) of a vehicle speed V and a required driving torque T. As for the changeover, an (first, second) IN-connection area is more enlarged and the OUT-Connection area and the neutral connection area are more narrowed, as a temperature of a lubricating oil is lower.

A hybrid-type power transmission in which an internal combustion engine and an electric rotating machine are used as a source of power for driving an output shaft through a change-speed mechanism. In the hybrid power transmission, the operation of the electric rotating machine is controlled in such a manner that the rotation speed of a rotor-side rotary member is synchronized with the rotation speed of an input-side or output-side rotary member when the rotation speed of the rotor-side rotary member becomes higher in a predetermined difference than the rotation speed of the input-side or output-side rotary member in shifting operation of a sleeve coupled with the rotor-side rotary member.

Control device for electric rotating machine in hybrid-type power transmission

An apparatus comprises a changeover mechanism which is able to change a connection state of an electric motor output shaft to any one from alternatives consisting 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 &#x201c;a neutral state&#x201d; in which no transmission path therebetween is provided. The changeover is carried out based on a combination (area) of a vehicle speed V and a required driving torque T. As for the changeover, a neutral area is enlarged so that a possibility of selecting the neutral state becomes higher, as a battery temperature is higher, or as an electric motor temperature is higher, or as a remaining battery level is larger.

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 &#x201c;a neutral state&#x201d; 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.

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 &#x201c;a neutral connection state&#x201d; in which no transmission path therebetween is provided. The changeover is carried out based on a combination (area) of a vehicle speed V and a required driving torque T. As for the changeover, an IN-connection area, in which an electric-motor-driving-wheels-maximum-torque is larger than in an OUT-Connection State and in a neutral connection area, is enlarged.

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 &#x201c;a neutral state&#x201d; 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, &#x201c;the IN-Connection State&#x201d; is selected. After the start of the vehicle and while the vehicle speed V is increasing, the changeovers to &#x201c;the OUT-Connection State&#x201d;, &#x201c;the IN-Connection State&#x201d;, and &#x201c;the neutral state&#x201d; are sequentially carried out.

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Toyota, Japan

Yousuke Hayashi