Toyota Jidosha Kabushiki Kaisha

Aisin Aw Co., Ltd.

Yosuke Kato

Yuji Iwase

Michitaka Tsuchida

Tomoo Atarashi

Takeshi Kanayama

Yasuo Shimizu

Shinichiro Suenaga

Takamasa Takeuchi

Masato Watanabe

Shinichi Baba

Kouhei Miyake

Nobuhito Mori

Norihiro Mae

In a vehicle including a first MG serving as a driving source, a power transmission mechanism configured to transmit power of the first MG to a drive wheel, and an oil circulation mechanism for cooling the power transmission mechanism and the first MG, it is determined that oil is short when a temperature of the first MG is higher than a temperature of the oil and a difference between the temperature of the first MG and the temperature of the oil is greater than a prescribed value.

Oil shortage determining system

In a vertical through hole of a rotational shaft, a first protrusion portion and a second protrusion portion protruding from an inner peripheral surface of the vertical through hole are provided in an axial direction of the through hole to form a storage area for storing oil, and discharge holes for directly discharging oil flowing over the first protrusion portion into the transaxle casing are provided in parallel with cooling holes.

Cooling system for motor

Disclosed is a parking lock apparatus which can prevent an electric actuator from being accessed from the outside of the vehicle, and thereby can prevent the function of the parking lock apparatus from being lowered as well as can reduce the production cost in comparison with the conventional parking lock apparatus. The parking lock apparatus comprises an electric actuatorto be activated in response to the shift operation, and a parking lock apparatuscapable of selectively taking a parking lock maintained state to have the stoppage state of a vehiclemaintained or a parking lock released state to have the stoppage state of the vehiclereleased. The electric actuatoris disposed between a first housingH partly constituting an enginefor generating a power and a second housingH partly constituting a transaxlefor transmitting the power generated by the engine

Parking lock apparatus

A cooling structure includes a rotating electrical machine () that has a stator (), the stator including plural split cores () annularly combined, and a shrink-fitted ring () mounted to the outer periphery of the plural split cores () for integrating the plural split cores (), and a case () that accommodates the rotating electrical machine () therein, the shrink-fitted ring () includes a cylindrical portion (), and a flange portion () that is provided at one end of the cylindrical portion (), the case () includes an accommodating portion () which has an inner peripheral wall () whose inner diameter is larger than the outer diameter of the cylindrical portion () and smaller than the outer diameter of the flange portion (), and in which accommodates the stator (), a first wall face () extending outward in the radial direction from the end of the inner peripheral wall () where the flange portion () is arranged, the flange portion () being mounted to the first wall face (), and a second wall face () extending inward in the radial direction from the end of the inner peripheral wall ().

Cooling structure of rotating electrical machine

Growing community of inventors

Gotemba, Japan

Yosuke Kato