Honda Motor Co., Ltd.

Honda Giken Kogyo Kabushiki Kaisha

Kabushiki Kaisha Toshiba

Shindengen Electric Manufacturing Company Limited

Hayashi Engineering Inc.

Hiroyuki Eguchi

Motohiro Shimizu

Koichi Asai

Tsutomu Wakitani

Yoshinori Nakagawa

Kazuya Saito

Toshifumi Matsuda

Kohei Teshima

Jiro Watanabe

Koichi Azuma

Toshiyuki Nakamura

Makoto Ogawa

Mitsuru Nagata

Mio Oshima

Kouichi Asai

Yoichi Yamamura

Toshimitsu Takaishi

Tsutomu Hirano

Ryuji Tsuru

Masataka Ikeda

Yasuhiro Shinkawa

Toshikazu Oda

Takeshi Goto

Takanori Mouri

Go Fujikawa

Ken Hashimoto

Yasukazu Yamaguchi

Michio Nakamura

Masayasu Nishida

Masanobu Matsuyama

Takumi Jinbo

Hiroi Nonaka

Takeshi Kanegae

Kazuhiko Kuyama

Naoya Imai

A load estimating device measures a voltage and a current supplied to a plurality of loads connected with a power supply, and obtains feature amounts of the plurality of loads from measurement values of the voltage and the current. A storage device stores a feature amount of each combination of two or more loads in advance. The load estimating device estimates what the plurality of loads connected with the power supply device are, on the basis of the obtained feature amounts and the feature amounts stored in the storage device. The feature amount includes a combination of an apparent power and a power factor.

Load estimating device and power supply device

A power supply device includes a first inverter that converts a first direct-current voltage into a first alternating-current voltage and outputs the first alternating-current voltage, and a second inverter that has an output connected in series with an output of the first inverter and converts a second direct-current voltage into a second alternating-current voltage synchronized with the first alternating-current voltage and outputs the second alternating-current voltage.

Power supply device with current limit based on output current and input voltage

A vehicle power supply system includes a power supply connector having a power supply port which is provided within a trunk room and electrically connected to a DC power source, and an inverter device which is provided separately from a fuel cell automobile (an electrically driven vehicle) and is disposed within the trunk room, wherein the trunk room is provided therein with an inverter installation space where the inverter device may be installed at a position which does not overlap with the power supply port when viewed from a forward and rearward direction of the vehicle, and the invert device is provided with a connection cable which is drawn from a side surface thereof and of which a front end portion has a connector portion connected to the power supply port.

Vehicle power supply system

A press working apparatus for processing a heated workpiece is provided with a base part which is relatively movable so as to advance and retreat with respect to the workpiece, a pad provided on the base part and configured to hold the workpiece, a working tool provided on the base part to pass through the pad and adapted to process the workpiece, and a support member configured to movably support the working tool in a direction perpendicular to an advance and retreat direction of the base part.

Press working apparatus

A press-die is provided with a lower die and an upper die. The lower die includes a drawing punch, a blank holder, and a cushion part. The upper die includes a drawing die part, and a trimming part. The blank holder includes a first holder part disposed to face to an end portion of the drawing die part, and a second holder part disposed to face to the trimming part. The second holder part has a drawing support portion that supports a first portion of a bottom surface of the first holder part. The drawing punch has a trimming support portion that supports a second portion of the bottom surface of the first holder part. The first holder part has a lower trimming blade at an outer edge thereof. The trimming part has an upper trimming blade at an inner edge thereof.

Press-die and press working method

The present invention discloses a molded laying interior material for a vehicle includes a decorative layer that faces a vehicle compartment and a buffer material layer that faces a vehicle body panel. The decorative layer has a first concavo-convex shape formed by press molding on a side of the vehicle compartment. The buffer material layer has a second concavo-convex shape formed by press molding a buffer material on a side of the vehicle body panel. The buffer material has a fiber structure in which fibers are oriented in a thickness direction in the fiber structure The decorative layer and the buffer material layer are at least laminated and integrated.

Molded laying interior material for vehicle

In a cogeneration system having a generator adapted to be connectable to an AC power feed line between a commercial power network and an electrical load, an internal combustion engine for driving the generator such that exhaust heat of the engine is supplied to a thermal load and an actuator that opens and closes a throttle valve of the engine, there are provided a power demand detector that detects power demand of the electrical load, a thermal demand detector that detects thermal demand of the thermal load. The operation of the actuator is controlled in response to the detected power demand so as to increase or decrease the engine, and ignition timing of the engine is controlled in a retard direction in response to the detected thermal demand.

Cogeneration system

In a cogeneration system having a first power plant connected to an AC power feed line between a power network and an electrical load and a first internal combustion engine for driving the first power plant such that exhaust heat of the first engine is supplied to a thermal load, power supply from the first power plant to the power network is interrupted by turning off a switch installed in the feed line, when outage of the power network is detected and a second power plant is operated, such that outputs of the first and second power plants are supplied to the electrical load. With this, it becomes possible to respond to a commercial power network outage for preventing reverse flow of the power output by the cogeneration system into the power network and supplying as much electric power as possible to the electrical load.

Cogeneration system with first and second power plants

A cogeneration system comprising a generator connected to an AC power feed line between a power network and an electrical load and an internal combustion engine for driving the generator and for supplying its exhaust heat to a thermal load. The power supply from the generator to the power network is interrupted by turning off a switch installed in the feed line when an outage of the power network is detected. A battery for storing DC power is connected to an inverter circuit to invert the DC power to AC power, such that the inverted AC power of the battery and the output of the generator are supplied to the electrical load, thereby enabling the system to respond to a power network outage and preventing reverse flow of the power output by the cogeneration system into the power network while supplying as much electric power as possible to the electrical load.

The invention makes it possible to secure a maximum output within the capacity range of an electrical power source by preventing an output from being cut by a protective function of a converter at the time of a temporary overload. A bidirectional DC-DC converterfor stepping up a voltage of DC power supplied from a batteryis provided. A stepped-up DC power is converted to an AC power by an inverter-via a regulator-and is outputted to the load side. An input voltage Vof the regulator-is detected by a voltage detecting portionand is inputted into an output limit determining portion. The output limit determining portiondetermines an output voltage value for starting to limit an inverter output according to a distance from when the input voltage Vfell below a limit starting voltage value Vlim to a limit voltage value Va. An inverter driving portionlimits an output by switching FETs in the inverterin accordance with this output voltage value. When a temporary overload is eliminated, then the output recovers to a maximum value.

Power unit

A cogeneration system that is operated in system connection is disconnected from the system and operated independently at a power failure of the system. A power generatordriven by an engine E is connected to a system. A water-cooling devicerecovers exhaust heat of the engine E. When an operating switchis switched, to its independent operation mode for an independent operation apart from the system, the upper limit of the target rotation speed Ntgt of an electronic governoris increased over that at system connection operation, thereby the engine speed can be increased, and the maximum output point of the power generatoris increased for operation. When a power failure of the systemis detected by a power failure detecting unit, an operation mode judging unitoutputs a judgment result similar to that at the moment when the independent operation mode is instructed and increases the upper limit of the target engine speed Ntgt, and turns off a connection switchto disconnect the system connection.

Cogeneration apparatus

This invention realizes control without using a current-detecting element to prevent over current from flowing into a switching element of a switching converter in response to an input primary voltage from a small-capacity DC power source. The switching converter includes an FETthat turns the input primary voltage from the DC power sourceon and off, and a choke coilthat is charged or discharged according to turning on/off of this FET. A driverdrives the FET so that an output voltage detected by an output voltage detectoris converged to a target voltage. A means for calculating a current I that flows into the FETbased on a duty ratio of the input primary voltage and the FETand the inductance of the choke coil. The driverdrives the FETat a duty ratio set so as to prevent the estimated current value I from exceeding a permissible current value or stops driving when the estimated current value I is equal to or more than the permissible current value.

Rectifying elements are connected in parallel with switching elements-through-in a switching sectionfor the lower voltage side and rectifying elements are connected in parallel with switching elements-through-in a switching sectionfor the higher voltage side. An LC resonant circuitis provided between the winding wire-for the high-voltage side in the transformerand the switching sectionfor the higher voltage side; currents which flows on the primary side and the secondary side is changed into a sinusoidal one; and switching is executed in the vicinity of the zero crossing points of the currents.

Two-way DC-DC converter

An engine generator, sufficiently meeting a demand for a simple configuration and easy control, is provided. The output of a generatorconnected to an engineis output through a rectifier circuitand an inverter. The generatoris a dual-purpose generator both for a generator function and for an electric motor function, and is driven by a drive inverter as an engine starting electric motor. A DC&#x2014;DC converteris provided between the output side of the rectifier circuitand the output terminal of a battery. The generatoris driven as an engine starting electric motor, using the batteryas a power supply, when the engine is started.

Engine generator

A variable resistance device is disclosed, which comprises a first variable resistance circuit and analog switches, a second variable resistance circuit including series-connected first and second resistors, one terminal of the first resistor connected to one terminal of the second resistor and the other terminal connected to one terminal of the first variable resistance circuit, a series-resistor circuit one terminal of which is connected to the other terminal of the second resistor, analog switches connected between the other terminal of the first resistor and nodes of respective resistors of the series-resistor circuit, an analog switch connected between the other terminal of the series-resistor circuit and a node of the first and second resistors, an analog switch connected between a node of the resistors of the series-resistor circuit and the node of the first and second resistors, and a short-circuiting analog switch connected between the first and second variable resistance circuits.

Growing community of inventors

Saitama, Japan

Hiroyuki Eguchi