Kyocera Corporation

Mitsubishi Jidosha Kogyo Kabushiki Kaisha

Hiroaki Ochiai

Tsuyoshi Nakai

Junya Nishii

A SAW device () comprises a substrate (); SAW elements () on a first main surface () of the substrate (); first lines (intermediate lines () and output side lines ()) that are disposed upon the first main face () and connected to the SAW elements (); an insulator () that is layered upon the first lines; second lines (a second ground line () and a third ground line ()) that are layered upon the insulator () and configure three-dimensional wiring parts () with the first lines; and a cover () that seals the SAW elements () and the three-dimensional wiring parts (). Wiring spaces (), formed between the first main face () and the cover (), houses the three-dimensional wiring parts (), without housing the SAW elements ().

Acoustic wave device

An oil passage structure of an engine is provided, wherein oil is prevented from being drained from an oil passage when the engine is stopped, and air mixed into the oil in the oil passage can be surely removed. The oil passage structure includes a first oil path or paths for supplying oil to lash adjusters of a cylinder head of the engine, a second oil path that communicates with an oil pump and supplies oil into an upstream portion of each first oil path, and an air vent passage that is connected to a downstream portion of each first oil path and has an opening through which the air is to be removed from the oil path. The second oil path and the opening of the air vent passage are located at higher positions than the first oil path(s).

Growing community of inventors

Kyoto, Japan

Hiroaki Ochiai