Jatco Corporation

Nissan Motor Company Limited

Atsushi Maeda

Akira Sugimura

Hideharu Yamamoto

Kouichi Kotsuji

Masahiro Kosaka

Shinya Mochiyama

Hisashi Saito

Masaomi Morishita

Jumpei Hayakawa

Takashi Kubo

Kou Takahashi

Ryoichi Mizokami

Tadashi Naito

A device includes a rotary electric machine, a liquid supply member configured to supply liquid to the rotary electric machine, and a facing member facing the rotary electric machine in an axial direction with the liquid supply member interposed therebetween. The liquid is supplied to the liquid supply member via the facing member.

Power transmission device

The integrated controller calculates the required lubricant flowrate required for lubricating the friction element corresponding to a selected position on the basis of a rotation speed difference in the friction element corresponding to the selected position, and increases the lubricant flowrate supplied to the friction element corresponding to the selected position immediately after switching is made between the forward position and the reverse position and supplies the lubricant flowrate larger than the required lubricant flowrate to the friction element corresponding to the selected position.

Lubricant flowrate control device of automatic transmission and lubricant flowrate control method

In a cooling structure in a clutch having drive plates and driven plates, a lower limit of a width of each of dot grooves is set to a width a at which a flow quantity of lubricating oil passing through each of the dot grooves becomes a minimum flow quantity at which the drive plates and the driven plates can be cooled to a temperature equal to or lower than an upper limit temperature (Tmax) and an upper limit of the width of each of the dot grooves is set to a width b at which an air content in lubricating oil passing through each of the dot grooves becomes a maximum air content at which, according to lubricating oil having the air content, the drive plates and the driven plates can be cooled to a temperature equal to or lower than the upper limit temperature (Tmax).

Cooling structure in clutch

A friction engagement element (CLx) is provided radially outside of a peripheral wall portion () of a clutch drum () and configured to be engaged by a piston (). A piston () is provided radially inside of the peripheral wall portion () and configured to engage and a friction engagement element (CLz). A first peripheral wall portion () of the peripheral wall portion () includes through-holes () communicating a radially inside of the first peripheral wall portion () with a radially outside thereof. A through-hole () is provided radially inside of the piston (). The piston () includes a communication passage () radially passing through the piston () and communicating the through-hole () with the through-holes () such that lubricating oil is supplied through the communication passage () and the through-holes () to the radially outside of the clutch drum () when the piston () is in an initial position.

Lubricating structure for friction engagement element of automatic transmission

Growing community of inventors

Fujinomiya, Japan

Atsushi Maeda