Toyota Jidosha Kabushiki Kaisha

Teikoku Piston Ring Co., Ltd.

Teipi Industry Co., Ltd.

Shunya Hattori

Toshihiro Takami

Giichiro Saito

Kazunari Takenaka

Hirofumi Michioka

Isao Katou

Takashi Kurauchi

Hiroshi Muraki

Kiyoharu Oizumi

Norihiko Tomioka

A cylinder liner for insert casting and a method for manufacturing the cylinder liner are provided. The cylinder liner and the method are applied to cylinder blocks and improve the adherence and the bonding strength with a cylinder block material in a favorable manner. The cylinder liner satisfies the following requirements: (i) the height of projectionsP is in a range between 0.5 mm and 1.0 mm, inclusive; (ii) the number of the projectionsP is in a range between 5 and 60, inclusive, per cmon the outer circumferential surface; (iii) the area ratio of regions each encircled by a contour line of a height of 0.4 mm is in a range between 10% and 50%, inclusive; (iv) the area ratio of regions each encircled by a contour line of a height of 0.2 mm is in a range between 20% and 55%, inclusive; (v) the region each encircled by a contour line of the height of 0.4 are independent from each other; and (vi) the area of the regions each encircled by a contour line of the height of 0.4 mm is in a range between 0.2 mmand 3.0 mm, inclusive.

Cylinder liner for insert casting and method for manufacturing thereof

Growing community of inventors

Yamagata, Japan

Shunya Hattori