Ihi Corporation

Metawater Co., Ltd.

Kabushiki Kaisha Tokai Rika Denki Seisakusho

Toyota Shatai Kabushiki Kaisha

Yasuhiko Yamamoto

Naoki Seki

Akihiro Shimamura

Naoki Hayashi

Masahiro Kato

Hirotaka Sugawara

Shinsuke Nakashima

Takeshi Kotama

Reiji Mikami

Takashi Yamagami

Provided is a mixing/clarifying deviceincluding a coagulant feederthat feeds coagulant to water to be treated to obtain coagulant-containing water and a tankin which the coagulant-containing water is mixed to form a floc and solid-liquid separation is performed. The tankincludes an outer cylinderhaving an inflow portthat flows the coagulant-containing water into the tankand an inner cylinderarranged inserted from the upper side of the tankto the lower side of the inflow port of the outer cylinderand having a lower end open in the tank

Mixing/clarifying device

A fuel supply control device () is configured to generate an operation amount used for feedback-controlling rotation of a gear pump () based on a deviation of a detected fuel flow rate with respect to a target flow rate, wherein the fuel supply control device generates the operation amount such that a rotation speed of the gear pump is equal to or greater than a predetermined lower limit rotation speed Nmin so as to protect a bearing of the gear pump.

Fuel supply control device

A fuel supply device includes a first electric pump which discharges a fuel toward an engine at a first flow rate, a second electric pump which discharges the fuel at a second flow rate and merges the fuel discharged at the second flow rate with the fuel discharged at the first flow rate, a first control device which is configured to control the first electric pump, and a second control device which is configured to control the second electric pump, in which the first control device and the second control device control the first electric pump and the second electric pump such that a total flow rate of the first flow rate and the second flow rate is a fuel flow rate target value.

Fuel supply device

A fuel supply control device is provided in which a parallel flow path of an orifice and a pressurizing valve is used as a complex pressurizing valve for a fuel supply amount, and which controls a fuel supply pump on the basis of a pressure difference before and after the complex pressurizing valve that has been detected by a pressure difference meter. When the rotational speed of the fuel supply pump is below a predetermined threshold value, the fuel supply pump is controlled on the basis of a first fuel measurement amount, and the fuel supply pump is controlled on the basis of a second fuel measurement amount.

A fuel supply control device controls a fuel supply pump based on a front-rear differential pressure across a metering valve for a fuel supply amount, which is detected by a differential pressure gauge, using parallel flow passages of an orifice and a pressurizing valve as the metering valve, in which the fuel supply control device includes a first control amount generation unit generating a first control amount based on the front-rear differential pressure, a second control amount generation unit generating a second control amount based on the rotation speed of the fuel supply pump, a control amount selection unit, a subtractor, and a control calculation unit, in which the control amount selection unit selects the first control amount in a case where the rotation speed is equal to or lower than a predetermined threshold and select the second control amount in a case where the rotation speed exceeds the threshold.

Growing community of inventors

Tokyo, Japan

Yasuhiko Yamamoto