Toyota Jidosha Kabushiki Kaisha

Denso Corporation

Shinobu Ishida

Hiroshi Inoue

Noritaka Miyamoto

Kazuhiro Asayama

Morihiro Matsumoto

Tetsuo Hamajima

Masahiko Mitsubayashi

Tadashi Takagaki

Shoichiro Nitta

Hirokazu Yokoyama

Masazumi Ohnishi

Shinji Kawasaki

With respect to a relation between an amount of axial displacement of a first bearing as well as an amount of axial displacement of a second bearing relative to an axial force generated at a meshing part between a first double-helical gear and a second double-helical gear, and an amount of axial displacement of the second bearing as well as an amount of axial displacement of a third bearing relative to an axial force generated at a meshing part between a third double-helical gear and a fourth double-helical gear, the second bearing is configured to have a smaller amount of axial displacement than that of at least one of the first bearing and the third bearing.

Power transmission mechanism

A high pressure pump for preventing distortion of a sealing surface or a cylinder form. The high pressure pump has an intermediate member including a cylinder body having a pressurizing chamber communicated with a cylinder accommodating a plunger. Fluid in the pressurizing chamber is pressurized by reciprocating the plunger. The intermediate member is arranged between a cover and a flange and is clamped by clamping bolts. An electromagnetic spill valve for receiving reaction force from the pressurizing chamber when the fluid in the pressurizing chamber is pressurized is attached to the cover at a position for reducing the clamping force applied to the intermediate member by the clamping bolts.

High-pressure pump having small initial axial force of a clamping bolt

A method of corrugating a metallic pipe which achieves an increase in the limit of tube expansion ratios. First, a heated part is formed by heating a local part of an outer periphery of a pipe in a circumferential direction by a high frequency coil. Next, the heated part is located within a forming surface of a forming die, and an axial compressive stress is applied to the pipe. Thus, the heated part is expanded while restricted by the forming surface. Therefore, even when the axial length of the heated part is increased, formability is stabilized and the tube expansion ratio can be raised.

Method for corrugating a metallic pipe

Growing community of inventors

Toyota, Japan

Shinobu Ishida