Toyota Jidosha Kabushiki Kaisha

Teikoku Piston Ring Co., Ltd.

Teipi Industry Co., Ltd.

Yukinori Ohta

Satoshi Yamada

Nobuyuki Yamashita

Noritaka Miyamoto

Toshihiro Takami

Takashi Sato

Masaki Hirano

Giichiro Saito

Masami Horigome

Kouhei Shibata

Takeshi Tsukahara

Kouhei Hori

Toshihiro Mihara

Kazunari Takenaka

Yoshio Naruse

Chikara Inoue

Shinji Matsuo

Isao Katou

Akihiro Kawamura

An ECU is applied to a hybrid vehicle that is equipped with an internal combustion engine and a second motor-generator, which are configured to output a driving force for running. The hybrid vehicle is configured to run with the internal combustion engine in intermittent operation. Also, the ECU is configured to calculate an amount of dilution water that is mixed into oil in the internal combustion engine to dilute the oil. The ECU is configured to operate the internal combustion engine when the amount of the dilution water becomes larger than a first threshold.

Control apparatus and control method for hybrid vehicle

A cylinder head includes a pair of side walls extending along a cylinder arrangement direction, a connection wall that is provided between the pair of side walls and connects both of the side walls with each other, a bearing part provided in the connection wall, an intake port that is open in one side wall out of the pair of side walls, and an exhaust port that is open in the other side wall. The other side wall is provided with a protrusion part that projects from the other side wall, extends along the cylinder arrangement direction, and has a confronting surface that faces an exhaust pipe connected with the other side wall.

Cylinder head

A cylinder liner has an upper portion and a lower portion with respect to an axial direction of the cylinder liner. A high thermal conductive film is provided on an outer circumferential surface of the upper portion. A low thermal conductive film is provided on an outer circumferential surface of the lower portion. The cylinder liner reduces temperature difference of a cylinder along its axial direction.

Cylinder liner and engine

A cylinder liner for insert casting used in a cylinder block is provided. The cylinder liner includes an outer circumferential surface having a plurality of projections. Each projection has a constricted shape. A film of a metal material is formed on the outer circumferential surface and the surfaces of the projections. As a result, the cylinder liner ensures sufficient bond strength with the casting material of a cylinder block, and sufficient thermal conductivity with the cylinder block.

A cylinder liner has an outer circumferential surface on which a film is formed. The film functions to form gaps between the cylinder block and the cylinder liner. Alternatively, the film functions to reduce adhesion of the cylinder liner to the cylinder block. The cylinder liner suppresses excessive decreases in the temperature of a cylinder.

Cylinder liner and method for manufacturing the same

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Nagoya, Japan

Yukinori Ohta