Nkk Corporation

Nissan Motor Company Limited

Koichi Tezuka

Akio Nagamune

Hiroshi Maeda

Atsushi Ohta

Isamu Komine

Hiroaki Miyahara

Yoshiyuki Kanao

Shinzi Ikegami

Akira Ohsumi

Method of controlling the operation of continuous casting and apparatus

Method and apparatus for obtaining sectional information of the

A distance measuring method and apparatus in which first and second pseudo random signals which are the same in pattern but slightly different in period are generated to obtain a correlation output of the first and second pseudo random signals before transmission thereof as a reference correlation output, and the first pseudo random signal is directly transmitted toward a target or alternatively a carrier wave is modulated by the first pseudo random signal and transmitted toward the target. A correlation output of the signal reflected and received from the target and the second pseudo random signal is detected and the distance to the target is measured from the time interval between the reference correlation output and the received correlation output. Alternatively, the modulated carrier wave reflected and received from the target and the second pseudo random signal are subjected to correlation processing to detect a correlative modulated carrier wave and the correlative modulated carrier wave is subjected to orthogonal detection by a reference carrier wave thereby obtaining a target detection output. Then, the distance to the target is measured from the time interval between the reference correlation output and the target detection output.

Distance measuring method and apparatus therefor

In an internal combustion engine including a combustion chamber in a cylinder, an intake port communicated with the combustion chamber at an upper portion of the cylinder, and an intake valve for controlling intake air which flows from the intake port into the combustion chamber at the upper portion of the cylinder, the intake port turns around a valve shaft of an intake valve in a spiral shape so as to produce swirls in the cylinder. The axis of the intake valve is positioned at the plane passing the central axis of the cylinder. The axis of the major intake air flow at an entrance of the intake port is positioned at one side of or out of the plane. The axis of the major intake air flow extends to intersect an inner turning wall of a turning portion of the intake port. The inner turning wall further passes the plane from the one side of the plane to the other side of the plane. The inner turning wall thereafter turns around the valve shaft of the intake valve and extends to pass again the plane from the other side to the one side of the plane.

Intake port of internal combustion engine

Growing community of inventors

Tokyo, Japan

Koichi Tezuka