Nippondenso Co., Ltd.

Denso Corporation

Fumio Kojima

Koji Kondo

Toshihiro Miyake

Makoto Totani

Shinzo Ito

Nobumasa Ishida

Takashi Hieda

Sadao Sumiya

Tomihiko Nagata

Makoto Suga

Takumi Noma

Masashi Niwa

Tateshi Katho

A printed circuit boardand an FPC boardto be connected together are each given a multilayer structure wherein insulating filmsand interconnection patternsare stacked alternately. In the FPC board, connecting signal lines are distributed among the multilayered interconnection patterns, and in the printed circuit board, interconnecting to landsformed on a connection face thereof is carried out using interconnection patternsof inner layers. By this means, it is possible to greatly increase the number of connecting signal lines between the printed circuit boardand the FPC board

Circuit board and circuit board connection structure

Method and an apparatus for detecting concentration of a chemical

An assembling method of a fuel injection valve for fuel injection into an internal combustion engine, the fuel injection valve including a cylindrical valve body having a fuel passage therein and a through-hole made in a direction of the axis thereof and a cylindrical nozzle coupled to the valve body and having a plurality of injection holes for dividing the fuel exited from the through-hole into a plurality of parts and for injecting the divided fuel parts into the engine. The assembling method comprises the steps of coupling the nozzle to the valve body, rotating the valve body relative to the nozzle, and stopping the rotation of the valve body when the through-hole takes a desirable position relative to the injection holes and fixedly securing the nozzle to the valve body. Preferably, an end portion of the valve body is tapered conically and the nozzle has at least one edge portion at its inside so that the edge portion comes into contact with the tapered portion when the nozzle is coupled to the valve body, the edge portion being made of a material whcih is deformed non-elastically in response to application of a force. The edge portion is crushed flat when the nozzle is coupled to the valve body.

Fuel injection valve assembly and an assembling method therefor

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Chiryu, Japan

Fumio Kojima