Zexel Gmbh

Takeshi Miyamoto

Toshiyuki Hasegawa

Shinya Nozaki

Takashi Kobayashi

Masanori Amemori

Yoshihisa Eto

Shinya Wozaki

Fuel injection nozzle

Variable nozzle hole type fuel injection nozzle

A flowmeter which obtains the flow rate of a fluid by detecting the rotational speed of an impeller is provided with a transmitter for transmitting a laser beam or ultrasonic wave to the tip end of the rotating impeller, a receiver for capturing the laser beam or ultrasonic wave reflected by the impeller, and a data processing unit for calculating the difference between the frequency of signals captured by the receiver and the frequency of signals transmitted by the transmitter and for calculating the rotational speed of the impeller based on the calculated values.

Flowmeter having reversible transmitter and receiver

A plurality of injection holes are circumferentially arranged in the peripheral wall of the hole at predetermined intervals and at axially different circumferential levels in the leading end portion of the nozzle body to introduce pressurized fuel, and the injection holes at each circumferential level are set different in diameter. On the other hand, a rotary valve has a plurality of fuel guide holes each corresponding to the injection holes at the respective circumferential levels. The fuel guide holes of the rotary valve and the injection holes of the nozzle body are arranged in such a relationship that while the fuel guide holes at one or more than one circumferential level are each made to communicate with the fuel guide holes at one or more than one corresponding circumferential level, the fuel guide holes at the other circumferential levels are not allowed to communicate with any injection holes.

Variable injection hole type fuel injection nozzle

In a method for measuring the velocity of a fluid visualized by the injection of tracer particles, the particle pathline images are imaged by the use of an interlaced scanning type television camera and logical products between pairs of field pictorial image data derived form a frame pictorial image of the output from the television camera is calculated. The correspondence among the particle pathline images of the field pictorial image data is determined on the basis of the logical products. The pairs of field pictorial image data can be obtained from a set of image pickup apparatuses whose exposure time periods are controlled so as to overlap partially.

Method and apparatus for measuring velocity of fluid

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Higashimatsuyama, Japan

Takeshi Miyamoto