Yazaki Corporation

Yamaha Marine Kabushiki Kaisha

Mazda Motor Corporation

Hideaki Masui

Katsuyuki Iwasaki

Minoru Kubota

Osamu Michihira

Seiji Hirano

Chitoshi Saito

Masaaki Shimizu

Jun Nakata

Mitsuru Anma

Nobuyoshi Sugimoto

A DC/DC converter has a EFT, and converts a power supply voltage from EDLC by turning on and off the FET. A control unit outputs a first PWM signal whose duty gradually decrease from 100% to the FET when the power supply from the EDLC to the DC/DC convertor is started. Thereafter, the control unit outputs a second PWM signal having a duty controlled so that an output voltage or an output current of the DC/DC converter becomes a reference value to the FET.

Switching power supply apparatus using two duty-controlled pulse signals for controlling DC/DC converter

The present invention includes one or more adjustment units configured to house one or more electric components that affect impedance in an output of power supply parts in a unit housing in which at least a connection portion has a predetermined shape and size; and a unit support part that is disposed inside the power supply part or between the output of the power supply part and loads and that detachably supports the adjustment unit. When impedance of a wire harness on the output side and the loads changes depending on a difference in a vehicle type, sufficient noise reduction is realized only by replacing the adjustment unit to be mounted without changing a configuration of a main body of the power supply part. Since a component and a component number can be used in common regardless of the difference in the vehicle type, cost can be reduced.

In-vehicle power supply device

Provided is a power distribution system for improving the reliability of power supply to the load in a case where a bidirectional DC/DC converter is connected to one power supply when redundantly configuring a power supply, including: a first terminal to be connected to a first battery; a second terminal to be connected to a second battery; a load terminal to be connected to a load; a bidirectional DC/DC converter connected between the first terminal and the second terminal; a first relay connected between the first terminal and the load terminal; a second relay connected between the second terminal and the load terminal; a control unit for performing controls of an operation direction of the bidirectional DC/DC converter, an opening and closing operation of the first relay, and an opening and closing operation of the second relay.

Power distribution system

Provided is a power distribution system for improving reliability of power supply to the load in a case where a bidirectional DC/DC converter is connected to one power supply when making a power supply redundant, connecting a first battery and a second battery so as to supply power to a load, including: a bidirectional DC/DC converter detecting an output of the first battery and an output of the second battery, and controlling charge and discharge operation of the second battery: and a control unit detecting the output voltage of the first battery and the output voltage of the second battery, and determining from which one of the first battery and the second battery power should be supplied to the load based on detection results by the control unit and the bidirectional DC/DC converter.

A vehicular power control system for supplying electric power from a power source of a vehicle to respective ones of a plurality of loads or electronic control units is provided. The vehicular power control system includes a power distribution unit, a customized information storing unit and a power control unit. The power distribution unit receives the electric power and distributes the electric power to a plurality of systems. The customized information storing unit stores customized information in which operation specifications of the plurality of loads or electronic control units are determined. The power control unit controls distribution of electric power to the respective ones of the plurality of loads or electronic control units by the power distribution unit, on the basis of the operation specifications determined in the customized information.

Vehicular power control system, wire harness, and vehicular power control device

A vehicular power distribution system includes a first and second power control boxes which are configured to distribute the power, and a main connection cable which electrically connects the first power control box and the second power control box. At least the second power control box includes at least one voltage converter which generates output power of second voltage from input power of first voltage determined in advance. A number of kinds of voltage of power passing the main connection cable is smaller than each of a number of kinds of voltage outputted from the first power control box and a number of kinds of voltage outputted from the second power control box.

Vehicular power distribution system

An electric connection box includes a housing in which a containing space is provided, and a first substrate unit and a second substrate unit which are contained in the containing space and output power input from a power source on the outside of the housing with respect to a load. The first substrate unit includes a first power source input terminal including a first terminal exposed portion, and the second substrate unit includes a second power source input terminal including a second terminal exposed portion. The first terminal exposed portion and the second terminal exposed portion are fastened by a fastening member and are electrically connected along with a power source connection terminal at least a part of which is exposed to the outside of the housing and which is connected to the power source, in a state where the first and second substrate units are contained in the housing.

Electric connection box

A propulsion unit can comprise a propeller and an internal combustion engine for driving the propeller. The propulsion unit can include a gear switching device for changing a drive mode of the propulsion unit between a forward drive mode, a reverse drive mode and a neutral mode. A throttle valve can be configured to control an opening of a first intake passage of the engine, and an idle speed control valve can be configured to control an opening of a second intake passage downstream of the first intake passage can also be provided. The propulsion unit can also comprise a control unit for controlling the idle speed control valve, wherein the control unit is configured to bring the engine to a first target rotational speed when the propeller is in the neutral mode, and to a second target rotational speed when the propeller is in the forward or reverse drive mode, wherein the first rotational speed is greater than the second rotational speed.

Propulsion unit for boat

A remote key entry system has a key unit and an answerback sound producing device. The key unit transmits a radio signal for remote-controlled locking and unlocking of a vehicle. The answerback sound producing device receives the key signal to indicate completion of correct locking or unlocking of the vehicle. The remote key entry system includes an environmental data sensing devices for obtaining data of an environment around the vehicle for control of the answerback sound. The system also has an answerback sound control device for controlling at least one of sound volume and tone of the answerback sound based on the environment data. The environmental data sensing device is an illumination sensing device for detecting environmental illuminance around the vehicle. The answerback sound control device varies the sound volume proportional to the illuminance. The environmental data sensing device may be a location calculating device for knowing location of the vehicle, and the answerback sound control device varies the sound volume based on the location of the vehicle.

Remote key entry system

An exhaust system that reduces noise generated by exhaust gases is provided. The exhaust system includes a drive unit that supports an internal combustion engine. An exhaust guide forms an upper portion of the case. An oil pan is attached to a lower surface of the exhaust guide. An exhaust passage leads exhaust gas of the internal combustion engine from an upper side to a lower side of the case, and discharges the exhaust gas from the lower side into a body of water. A branch passage extends from the exhaust passage at an intermediate portion thereof. The branch passage is configured for discharging the exhaust gas inside the exhaust passage into ambient air, and includes an expansion chamber at its intermediate portion. The expansion chamber is partially defined by the exhaust guide and partially defined by the oil pan.

Exhaust system for internal combustion engine of outboard motor

A break display apparatus for an intelligent power IC incorporating an overcurrent/overheating protection function. The break display apparatus includes a plurality of intelligent power ICs each incorporating an overcurrent/overheating protection function of detecting overcurrent/overheating for a load to break it, a pulse generating unit connected to the plurality of intelligent power ICs for generating a pulse signal having the number of pulses corresponding to a broken intelligent power IC as a signal for specifying the broken intelligent power IC on the basis of a break signal from the broken intelligent power IC, and a warning lamp for indicating the visual information of the broken intelligent power IC in response to the pulse signal generated by the pulse generating unit.

Break display apparatus for semiconductor switching element

An electrical wiring harness structure constituting a multiplex transmission network in a vehicle, in which a vehicle body is divided into a plurality of blocks, electrical components are mounted in units of blocks to constitute modules, and thereafter, the modules are combined to complete a vehicle body. The structure includes control nodes, arranged in units of modules, for controlling communications of the electrical components mounted on the corresponding modules, wiring harnesses, arranged between the adjacent modules, for forming a transmission path for performing communications among the control nodes, and connectors for connecting the wiring harnesses and the control nodes.

Growing community of inventors

Makinohara, Japan

Hideaki Masui