Daido Metal Company Ltd.

Daihatsu Motor Company, Ltd.

Hiroshi Munetoki

Hirohisa Tanaka

Osamu Ishigo

Yukihiko Kagohara

Mitsuru Sugita

Yoshikazu Mizuno

Naoki Iwama

Ichie Nomura

Hidehisa Kato

Tomoyuki Uemura

Ryouhei Kusunoki

Takashi Shiota

A bearing device for internal combustion engines, comprising a crankshaft of an internal combustion engine and bearings supporting the crankshaft, and wherein the crankshaft is made of steel having not been subjected to surface hardening and having a structure, which is mainly composed of pearlite having the pro-eutectoid ferrite fraction of at most 3%, and is processed to have the surface roughness Rz of at most 0.8 &#x3bc;m, and wherein the bearings have an aluminum bearing alloy bonded to a back plate thereof and contain, as an alloy component thereof, at least Si particles of less than 4 mass %, whereby early abrasion and scratches of the crankshaft are suppressed to be equivalent to or less than abrasion loss and scratches of conventional DCI shafts.

Bearing device for internal combustion engines

A fuel cell device that is designed to circulate cooling water with simplified and compact construction, without any need of a pump for circulating the cooling water, so as to reduce electric power loss. A fuel cell and a radiator are connected through a closed line via an inflow-side cooling pipe and an outflow-side cooling pipe and also the radiator is disposed under the wing of an air spoiler spaced above the fuel cell and open to outside air. With this arrangement, while the fuel cell generates electric power, the cooling water of decreased density flowing out of the fuel cell is allowed to rise through the outflow-side cooling pipe to feed it to the radiator and the cooling water of increased density that was cooled down by heat exchanging the cooling water and outside air is allowed to lower through the inflow-side cooling pipe to feed it to the fuel cell again.

Fuel cell device with a heat release means disposed on an automobile

Growing community of inventors

Ikeda, Japan

Hiroshi Munetoki