Nissan Motor Company Limited

Tokyo Institute of Technology, Reasearch Laboratory of Precision

Toshio Takano

Hidehiro Nishizawa

Yasuhiro Iwata

Tadashi Ashida

Yakichi Higo

Junichiro Matsuoka

Shigetomo Nunomura

Masamitsu Higuchi

Keiichi Shindo

Atsushi Fujimoto

The coherence between inputted and received white noise is used to determined the presence or absence of flaws in a structure such as a joint. The strength of the joint is determined by integrating the coherence factor and observing the magnitude of the same.

Non-destructive inspection method

Cleaning of gums, sludge and other adhering on a fuel injection valve in a fuel injection internal combustion engine can be done by driving of engine with a cleaning agent as a mixture of gasoline and an aromatic solvent. The mixture is adjusted the mixture rate thereof to satisfactorily combustion in an engine cylinder and dissolve gums, sludge and other adherings on the fuel injection valve. The cleaning agent is supplied to the engine cylinder through the fuel injection valve and during passing through the fuel injection valve it dissolves the adherings.

Cleaning system for fuel injectors

Growing community of inventors

Machida, Japan

Toshio Takano