Nippondenso Co., Ltd.

Denso Corporation

Toyota Jidosha Kabushiki Kaisha

Nippon Soken, Inc.

Yasuhiro Horiuchi

Masahiko Suzuki

Masatoshi Kuroyanagi

Kazuma Matsui

Yutaka Miyamoto

Hiroshi Iwata

Toshihiko Igashira

Yasutoshi Suzuki

Takeshi Takahashi

Akira Takagi

Kunihiko Hara

Yoshiyuki Okamoto

Toshiki Sugiyama

Shigeiku Enomoto

Kanehito Nakamura

Kazuhiko Yamaguchi

Tetsuya Toyao

Tadaaki Makino

Koichi Moriguchi

Nobuhiko Shima

Hidekuni Sugi

Kouichi Moriguchi

Kouichi Yamada

Hiroyasu Itoh

Yukio Hashimoto

Kougorou Nakagawa

An injector includes a boosting mechanism and a nozzle. The boosting mechanism boosts fuel, and the nozzle injects and supplies the fuel boosted by the boosting mechanism. The boosting mechanism includes a tubular piston and a column piston. The tubular piston has a bore, which extends through the tubular piston in a direction of a longitudinal axis of the tubular piston. The column piston is loosely received by the tubular piston and has an end portion, which projects from the tubular piston, and which is engaged with the tubular piston. The tubular piston is slidably received by a first cylinder. The end portion of the column piston is slidably received by a second cylinder, which is provided generally coaxially to the first cylinder, and which has a diameter different from that of the first cylinder.

Injector

A fuel injection apparatus for an internal combustion engine is provided which is designed to control a fuel discharge from a fuel injection pump by regulating the quantity of fuel sucked into the fuel injection pump. The fuel injection pump is driven in synchronism with rotation of the engine to pressurize and supply the fuel to an accumulator chamber from which the fuel is injected into cylinders of the engine. The solenoid valve moves a valve member linearly to open and close a fluid path leading to the fuel injection pump. The controller actuates the solenoid valve in one of a first control mode when the engine speed is low and a second control mode when the engine speed is high. In the first control mode, a valve on-duration in which the solenoid valve is turned on to open the fluid path through the valve member and an area of the fluid path opened by the valve member are both controlled. In the second control mode, only the opened area of the fluid path is controlled. This achieves fine adjustment of quantity of fuel discharged from the fuel injection pump over a wide range of engine speeds.

Fuel injection system for internal combustion engine

A volumetric measurement apparatus is provided which measures the volume of a liquid material stored within a container. The volumetric measurement apparatus includes a reference enclosure having disposed therein a single pressure sensor. The pressure sensor has a pressure sensitive element exposed to both internal spaces of the reference enclosure and the container to detect a pressure difference between the container and the reference enclosure. A sensor shielding member is arranged in the reference enclosure to selectively shield the pressure sensitive element from the internal space of the reference enclosure to detect only a pressure within the container. The volumetric measurement is made based on the pressure difference between the container and the reference enclosure and the pressure in the container.

Structure of a volumetric measuring apparatus

A fuel injection system for an internal combustion engine, wherein a spill valve device operated by a piezoelectric unit is provided for carrying out a pressure pump spill operation when a fuel injection stroke is completed. The spill valve device includes a operating chamber connected to a sealed chamber of the piezoelectric unit, the sealed chamber being connected to a fuel supplementing passageway which is connected to a fuel passageway connecting a fuel tank with a fuel intake port of the pressure pump. The pressure pump is further provided with a spill passageway for discharging pressurized fuel in the pressure chamber via the fuel passageway. A check valve is provided in the fuel passageway to prevent a flow of the spilled fuel to the sealed chamber of the piezoelectric unit.

Fuel injection system for an internal combustion engine

A hydraulic drive system for use with a vehicle power steering pump has a hydraulic motor connected in series with a power steering mechanism and a bypass line extending in bypassing relationship with the motor. A bypass valve is disposed in the bypass line to control the flow through the bypass line such that, when a steering force applied to a vehicle steering wheel is increased, the bypass flow is substantially in proportion to the steering force.

Hydraulic drive system for use with vehicle power steering pump

The device of this invention has a variable capacity pump, a channel through which the discharged fluid from the pump passes toward an actuator, a variable choke located in the channel and pressure detecting means which detects the pressure difference on opposite sides of the variable choke. The pump varies its volume in relation with the pressure difference detected by the pressure detecting means. The opening area of the channel is varied by the variable choke in relation with the pressure of the fluid being supplied to the actuator, namely the pressure of the fluid flowing downstream of the variable choke. The device of this invention may also have an auxiliary variable choke located in the channel. The auxiliary variable choke can control the amount of fluid being supplied to the actuator in response to the operating condition of the actuator.

Volume controlling device for variable volume pump

A motor-driven radial plunger pump has an outer housing enclosing a motor section and a pump section drivingly connected thereto. The motor section has a motor housing cooperating with the outer housing to define a fluid passage having a fluid inlet adjacent to a part of the motor housing in which a brush unit is disposed. The fluid passage contains a filter element and has a recess disposed upstream thereof and adjacent to motor magnets so that magnetic particles contained in the fluid flow are magnetically adhered to and deposited on the bottom of the recess. The pump section has a rotor with radial plungers slidably disposed in cylinder bores in the rotor. The cylinder bores have radially inner end successively communicated with a suction passage communicated with the fluid passage between the outer and motor housings through feed holes formed in a coupling disc plate drivingly connecting the motor with the rotor. The feed holes each have a trailing side providing a face extending an angle of attack relative to the plane of the coupling disc plate whereby, when the disc plate is rotated with the rotor, the feed holes operate to positively feed the fluid into the suction passage.

Motor-driven radial plunger pump

A packaged solar cell apparatus comprises at least two sunlight electric generating devices, a light intensity detector for producing an output signal in response to the intensity of incident sunlight, a comparator for comparing an output signal level of the light intensity detector with a reference level, and a switch for automatically switching the connection of the plurality of sunlight electric generating devices in accordance with an output signal of the comparator. The connection of the plurality of sunlight electric generating devices is switched between series and parallel connections, respectively, as the output signal level of the light intensity detector becomes higher or lower than the reference level, whereby output electric power from the plurality of sunlight electric generating devices is efficiently supplied to a desired electric load in accordance with the intensity of insolation.

Packaged solar cell apparatus

A fuel injection apparatus injects a high-pressure fuel to each combustion chamber of an internal combustion engine. The fuel injection apparatus is provided with an accumulator which controls an amount of injection and an injection period of the high-pressure fuel compressed and supplied from the fuel pressure chamber in accordance with the operation of the internal combustion engine.

Fuel injection apparatus

Growing community of inventors

Aichi, Japan

Yasuhiro Horiuchi