Abstract: An injector includes a nozzle hole, a metal body including a high pressure passage inside the body, and a fuel pressure sensor attached to the body to detect fuel pressure. The sensor includes a metal flexure element resiliently deformed upon application of fuel pressure to the flexure element, and a sensor element that converts flexure in the flexure element into an electrical signal and outputs the signal as a pressure detection value. The body includes a sensor high pressure passage communicating with the flexure element, and a body side sealing surface on which the flexure element is pressed and closely-attached so that a clearance between the body and the flexure element is metal-to-metal sealed on the sealing surface. Carburizing treatment is performed on at least a part of the body that defines the sensor high pressure passage. The carburizing treatment is not performed on the sealing surface.

Abstract: A fuel injection device includes a pressure control portion for controlling operation of a nozzle, and a body portion having therein a bent lead wire hole through which two lead wires of the pressure control portion are introduced to exterior. A first guide member having therein a pair of first guide grooves partitioned by a first partition member is inserted into the lead wire hole from one end side, a second guide member having therein a pair of second guide grooves partitioned by a second partition member is inserted into the lead wire hole from the other end side. The first partition member protrudes from one end portion of the first guide member to have a protrusion portion, which is fitted with a recess portion of the second partition portion at one end portion of the second guide member when the first and second guide members contact.

Abstract: An injector has a body that defines a high-pressure passage for passing high-pressure fuel to an injection hole inside, a needle that is accommodated in the body and that opens and closes the injection hole, an electric actuator that causes the needle to perform the opening and closing action, a lead wire that is arranged in a lead wire insertion hole formed in the body and that supplies an electric power to the electric actuator, and a fuel pressure sensor that is fixed to the body and that senses pressure of the high-pressure fuel. An outlet hole, via which the lead wire extends from the lead wire insertion hole to an outside of the body, is located at a position closer to the injection hole than the fuel pressure sensor is.

Abstract: A detector detects a remaining power of a battery. A calculator calculates a demand load of air-conditioning based on at least one of a preset temperature set for air in a passenger compartment of an electric vehicle and an outside temperature of air outside of the electric vehicle. A switching portion switches a mode of air-conditioning between a battery mode and an engine mode based on the calculated demand load and the detected remaining power of the battery. The battery mode causes the battery to supply electric power for air-conditioning, and the engine mode causes an engine of the electric vehicle to supply combustion energy for air-conditioning.

Abstract: An injector includes a nozzle body, a main body including a supply port on the outer peripheral surface of the main body and a high pressure passage, and a fuel pressure sensor on an outer peripheral surface of the main body to detect fuel pressure. The high pressure passage has a first passage extending from the supply port in a radial direction of the main body, and a second passage extending from a fuel downstream end portion of the first passage toward an injection hole in an insertion direction of the nozzle body. The supply port and the sensor are diametrically opposed to each other. The main body includes a sensor passage, which branches from the high pressure passage to extend from the fuel downstream end portion of the first passage in an imaginary extension of the first passage so that fuel flows into the sensor through the sensor passage.

Abstract: An injector having an injector body, in which a housing opening and a communication hale are provided, includes a supporting member fixed to an actuator, which includes a lead-wire supporting portion that supports ends of lead wires and a plate portion formed integrally with the lead-wire supporting portion. A thickness of the plate portion is smaller than that of the lead-wire supporting portion, and multiple trench portions are provided on a surface of the plate portion so that the plate portion can be easily bent. While the supporting member passes through the housing opening, the lead wires straight move. After an end portion of the supporting member contacts the communication hole, external force is applied to the end portion to bend the plate portion, and thereby the lead wires are bent while moving in the communication hole.

Abstract: The injector body 4z which forms therein the high-pressure paths 6az, 6hz, and 6cz through which high-pressure fuel flows to a spray hole and has disposed therein the piezo-actuator 2z (drive means) to drive a needle (valve) to open or close the spray hole, the fuel pressure sensor 50z which is installed in the body 4z to measure the pressure of the high-pressure fuel, the sensor terminals 55z to output a measured pressure value from the fuel pressure sensor 50z externally, the drive terminals 56z to which the electric power for the piezo-actuator 2z is supplied, and the connector housing 70z retaining the sensor terminals 55z and the drive terminals 56z are provided. The sensor terminals 55z, the drive terminals 56z, and the connector housing 70z constitute a single connector.

Abstract: A fuel injection valve includes a body, a fuel pressure sensor, and a weld. The body has a passage to introduce high pressure fuel toward an injection hole. The fuel pressure sensor has a strain element and a sensor element so as to detect a pressure of the fuel. The strain element has an elastic deformation by receiving a pressure of the fuel. The sensor element converts an amount of the elastic deformation into a signal. The weld is defined by welding the body and the strain element. The fuel pressure sensor is mounted to the body through the weld.

Abstract: A fuel pressure sensor/sensor mount assembly for use in a fuel injection system equipped with fuel injectors which inject fuel, as supplied from an accumulator through fuel pipes, into a multi-cylinder internal combustion engine mounted in an engine compartment of a vehicle. The assembly includes a connector unit and fuel pressure sensors. The connector unit has formed therein a plurality of communication paths each of which is to establish a connection between one of the fuel injectors and the accumulator through one of the fuel pipes. The connector unit also has formed therein sensor mounts exposed to the communication paths. Each of the fuel pressure sensors is disposed in the sensor mount to measure the pressure of the fuel in the communication path. This structure permits steps of installing the fuel pressure sensors within the engine compartment to be decreased and ensures desired measurement accuracy of the fuel pressure sensors.

Abstract: An injector includes a nozzle hole, a metal body including a high pressure passage inside the body, and a fuel pressure sensor attached to the body to detect fuel pressure. The sensor includes a metal flexure element resiliently deformed upon application of fuel pressure to the flexure element, and a sensor element that converts flexure in the flexure element into an electrical signal and outputs the signal as a pressure detection value. The body includes a sensor high pressure passage communicating with the flexure element, and a body side sealing surface on which the flexure element is pressed and closely-attached so that a clearance between the body and the flexure element is metal-to-metal sealed on the sealing surface. Carburizing treatment is performed on at least a part of the body that defines the sensor high pressure passage. The carburizing treatment is not performed on the sealing surface.

Abstract: A stem is installed to an injector body and is resiliently deformable upon receiving a pressure of high pressure fuel conducted through a high pressure passage of the injector body. A strain gauge is installed to the stem to sense a strain generated in the stem. A molded IC device executes an amplifying operation, which amplifies a signal received from the strain gauge. A retainer is threadably fastened to the injector body and is configured to be rotatable relative to the stem. The stem, the strain gauge the molded IC device are integrally assembled together to form a fuel pressure sensing unit, which is installed to the injector body by threadably fastening a threaded portion of the retainer to the injector body.

Abstract: In a fuel injector, a body has formed therein a spray hole and a fuel supply passage. Fuel supplied to the fuel supply passage is delivered to the spray hole. A fuel pressure sensor produces a signal indicative of a pressure of the fuel. First terminals are attached to the fuel pressure sensor, and include a terminal for outputting the signal. The fuel pressure sensor is threadedly installed in the body while the plurality of first terminals are rotated about a preset axis. A connector includes a housing attached to the body, and second terminals supported by the housing for external electric connection of the fuel pressure sensor. Electrodes are each arranged to extend around the preset axis in a circular arc. Each of the electrodes electrically connects a corresponding one of the first terminals to a corresponding one of the second terminals.

Abstract: A stem is installed to an injector body and is resiliently deformable upon receiving a pressure of high pressure fuel conducted through a high pressure passage of the injector body. A strain gauge is installed to the stem to sense a strain generated in the stem. A molded IC device executes an amplifying operation, which amplifies a signal received from the strain gauge. A housing is installed to the stem and holds the molded IC device. The stem, the strain gauge the molded IC device and the housing are integrally assembled together to form a fuel pressure sensing unit, which is installed to the injector body by threadably fastening a threaded portion, which is formed at the housing, to the injector body.

Abstract: A stem is installed to an injector body and is resiliently deformable upon receiving a pressure of high pressure fuel conducted through a high pressure passage of the injector body. A strain gauge is installed to the stem to sense a strain generated in the stem. A molded IC device executes an amplifying operation, which amplifies a signal received from the strain gauge. The stem, the strain gauge and the molded IC device are integrally assembled together to form a fuel pressure sensing unit, which is installed to the injector body by threadably fastening a threaded portion, which is formed at the stem, to the injector body.

Abstract: A fuel injection apparatus includes a body, a nozzle, a pressure control unit, a physical quantity measurement unit, a first terminal, a second terminal, a positioning member, and a resin connector main body portion. The pressure control unit controls opening and closing of the nozzle The physical quantity measurement unit outputs an electric signal in accordance with a physical quantity of high pressure fuel. The first terminal is connected to the pressure control unit. The second terminal connected to the physical quantity measurement unit. The positioning member integrally holds the first terminal and the second terminal and locates the first terminal and the second terminal at predetermined positions. The connector main body portion receives therein the positioning member.

Abstract: A fuel injection apparatus that includes a body, a nozzle, a pressure control unit, and a physical quantity measurement unit. The body has a fuel inlet port and a high-pressure fuel passage that is communicated with the fuel inlet port. The pressure control unit controls opening and closing of the nozzle. The fuel inlet port projects in a radially outward direction of the body. The body includes a fuel outlet port located on a lateral side of a longitudinal axis of the body opposite from the fuel inlet port. The physical quantity measurement unit is provided between the fuel inlet port and the fuel outlet port, and the physical quantity measurement unit measures a physical quantity of high pressure fuel introduced from the fuel inlet port.

Abstract: An injector has a body that defines a high-pressure passage for passing high-pressure fuel to an injection hole inside, a needle that is accommodated in the body and that opens and closes the injection hole, an electric actuator that causes the needle to perform the opening and closing action, a lead wire that is arranged in a lead wire insertion hole formed in the body and that supplies an electric power to the electric actuator, and a fuel pressure sensor that is fixed to the body and that senses pressure of the high-pressure fuel. An outlet hole, via which the lead wire extends from the lead wire insertion hole to an outside of the body, is located at a position closer to the injection hole than the fuel pressure sensor is.

Abstract: In a fuel injector, a body has formed therein a spray hole and a fuel supply passage. Fuel supplied to the fuel supply passage is delivered to the spray hole. A fuel pressure sensor produces a signal indicative of a pressure of the fuel. First terminals are attached to the fuel pressure sensor and include a terminal for outputting the signal. The fuel pressure sensor is threadedly installed in the body while the first terminals are rotated. A connector includes a housing attached to the body, and second terminals supported by the housing for external electric connection of the fuel pressure sensor. Wires are operative to establish electrical connection between the first terminals and the second terminals. A wire holder is configured to hold each of the plurality of wires at least partly around the fuel pressure sensor.

Abstract: A fuel injection device includes a pressure control portion for controlling operation of a nozzle, and a body portion having therein a bent lead wire hole through which two lead wires of the pressure control portion are introduced to exterior. A first guide member having therein a pair of first guide grooves partitioned by a first partition member is inserted into the lead wire hole from one end side, a second guide member having therein a pair of second guide grooves partitioned by a second partition member is inserted into the lead wire hole from the other end side. The first partition member protrudes from one end portion of the first guide member to have a protrusion portion, which is fitted with a recess portion of the second partition portion at one end portion of the second guide member when the first and second guide members contact.

Abstract: A fuel pressure sensor/sensor mount assembly for use in a fuel injection system equipped with fuel injectors which inject fuel, as supplied from an accumulator through fuel pipes, into a multi-cylinder internal combustion engine mounted in an engine compartment of a vehicle. The assembly includes a connector unit and fuel pressure sensors. The connector unit has formed therein a plurality of communication paths each of which is to establish a connection between one of the fuel injectors and the accumulator through one of the fuel pipes. The connector unit also has formed therein sensor mounts exposed to the communication paths. Each of the fuel pressure sensors is disposed in the sensor mount to measure the pressure of the fuel in the communication path. This structure permits steps of installing the fuel pressure sensors within the engine compartment to be decreased and ensures desired measurement accuracy of the fuel pressure sensors.