Toyota Jidosha Kabushiki Kaisha

Toshiaki Hamaguri

Masahiko Asano

Hiromichi Nakata

Yasuo Kinoshita

Kazuhisa Mikame

Ken Asakura

Kenji Shimoda

Motohiro Tsuzuki

Kazuaki Nishio

Koji Kasahara

A spray coating film has a first spray coating film formed on a surface of an aluminum substrate and a second spray coating film formed on a surface of the first spray coating film. In the first spray coating film, an inorganic material with a layered crystalline structure is dispersed in a Ni-based alloy material, and an area ratio of the inorganic material is in a range from 40% to 80% relative to the sectional area of the first spray coating film. The second spray coating film is a porous film composed of ZrO&#x2014;SiObased ceramic containing 30% to 50% by mass of SiO, and the second spray coating film has an area ratio of pores of 30% to 80% relative to the sectional area of the second spray coating film.

Spray coating film, engine having the spray coating film and film-forming method of the spray coating film

The first aspect of the present invention is a cylinder head containing a water jacket in which a passage for EGR gas is disposed, and the EGR gas passage has a hollow pipe that is disposed in the hollow pipe and through which the EGR gas passes and an end member that is formed with an insert hole into which the end of the hollow pipe is inserted and fixed. The end member has a bottom that is provided with the insert hole, a side wall that is formed continuously to the bottom, and a wedge portion that is projected outward from the outer peripheral of the side wall and includes a inclined surface facing the wall of the cylinder head and inclined to the flow direction of the EGR gas. The EGR gas passage is fixed to the cylinder head by holding the wedge portion of the end member between a fastening member for fastening the EGR gas passage to the cylinder head and the wall of the cylinder head.

Cylinder head

A rotation/linear motion converting mechanism includes a shafthaving an external threadon an outer circumferential surface, a nuthaving an internal threadon an inner circumferential surface, and a rollerarranged between the outer circumferential surface of the shaftand the inner circumferential surface of the nut. The roller has a threadthreaded to the external threadand the internal thread. A spur gearand a spur gearare provided in portions of the roller. A spur gearis provided in a portion of the shaft. The spur gearis meshed with the spur gearof the roller. Internal teethare provided in a portion of the nut. The internal teethare meshed with the spur gearof the roller. This improves the lead accuracy of the shaftwhen the nutis rotated.

Rotation/linear motion converting mechanism

A phase variation actuator has an outer rotor that is connected to a cam sprocket so that the outer rotor is rotatable together with the cam sprocket, and an inner rotor that is connected to a journal so that the inner rotor is rotatable together with the journal. The journal is rotatably supported by an internal combustion engine. A camshaft is inserted into a slide hole of the journal provided near the phase variation actuator so that the camshaft is slidable in the direction of the rotating axis of the camshaft. The camshaft is connected to the journal by meshing of splines so that the camshaft is rotatable together with the journal.

Growing community of inventors

Toyota, Japan

Toshiaki Hamaguri