Abstract: A liquid level measuring device may comprise a fuel tank that stores fuel, a fuel pump that sucks the fuel in the fuel tank and pumps the fuel toward a combustion apparatus, a fuel discharging portion that discharges the fuel from the fuel pump into the fuel tank, a ease that receives the fuel discharged from the fuel discharging portion and a pair of liquid level-sensitive electrodes that is accommodated in the case so as to measure capacitance that changes with the liquid level. The case may have a fuel permeating property to equalize the liquid level inside the case and the liquid level outside the case.

Abstract: An exhaust gas recirculation apparatus for engine includes an EGR passage, a first EGR valve and a second EGR valve provided in series in the EGR passage to regulate an EGR flow rate in the EGR passage. The first EGR valve is configured as a poppet valve and is configured to open in a range of opening degree from full open to full close. The second EGR valve has a maximum opening degree restricted to a predetermined small opening degree smaller than full open. The second EGR valve is configured to open in a range of opening degree from the predetermined small opening degree to full close and to allow the first EGR valve to provide a maximum exhaust flow rate when the second EGR valve is held at the predetermined small opening degree.

Abstract: A position sensor includes: a stator including an excitation coil and a detection coil each formed in planar shape; and a mover placed to face the stator and provided with a plurality of regions having different magnetic permeability and being arranged periodically in a moving direction of the mover. The excitation coil includes a first excitation coil pattern and a second excitation coil pattern formed adjacent to the first excitation coil pattern. The detection coil includes a detection coil pattern placed between the first excitation coil pattern and the second excitation coil pattern in the moving direction of the mover. The second excitation coil pattern is wound to flow an excitation current in an opposite direction to the first excitation coil pattern.

Abstract: A brushless motor may comprise a rotor comprising a shaft, a back yoke fixed on the shaft, a permanent magnet disposed at an outer circumference of the back yoke and first and second resin portions. The first resin portion may be formed at one ends of the back yoke and the permanent magnet and the second resin portion may be formed at other ends. The first and second resin portions may be fixed the back yoke and the permanent magnet. A communication hole communicating one end side and another end side in the shaft axis direction may be formed through the back yoke or between the shaft and the back yoke. A third resin portion connecting with the first and the second resin portions may be formed within the communication hole. The first, second and third resin portions may be formed integrally.

Abstract: A trap canister is configured to capture fuel vapor contained in breakthrough gas discharged from an adsorbent canister. The trap canister has a housing defining an adsorption chamber therein, a breathable partition member disposed in the housing and dividing the adsorption chamber into a first chamber and a second chamber, an adsorbent filled in the first chamber and the second chamber, and a latent heal storage material tilled in the first chamber in a mixed manner with the adsorbent. The first chamber is configured to receive breakthrough gas, while the second chamber is configured to communicate with the atmosphere. The first chamber has a cross-sectional area larger than that of the second chamber.

Abstract: A treatment apparatus for evaporated fuel including tank port, a purge port, an atmosphere port, a channel communicating the tank port or the purge port and the atmosphere port, and plural adsorption chambers having adsorbent therein, which adsorbing and desorbing a fuel component of evaporated fuel, wherein the adsorption chamber closest to the atmosphere port has a major diameter portion filled with the adsorbent over all a cross section of the charmed a projecting portion projecting from the major diameter portion toward the atmosphere port and filled with the adsorbent, and a space portion between the projecting portion and an inner wall of the channel and not filled with the adsorbent, and end surfaces of the major diameter portion and the projecting portion on the atmosphere port side are breathable so as to control temperature drop in activated carbon and to thereby enhance bleed emission performance.

Abstract: A motor may comprise a rotor and a stator. A first core of the stator may comprise three pieces of first partial cores and a first connecting portion connecting the first partial cores adjacent to one another. The first partial core may comprise a tooth part disposed at a front edge portion and a contacting part disposed at a rear edge portion. The contacting part may contact the adjacent first partial core. The first core may be formed such that a state of the contacting parts changes from a separated state in which the contacting parts are separated from each other to a contacting state in which the contacting parts of the adjacent first partial cores are contacting each other.

Abstract: A sensor may be configured to be disposed in a fuel tank. The sensor may comprise a density detecting unit and a temperature detecting unit. The density detecting unit may be configured to detect a density of a specific substance included in fuel in the fuel tank. The temperature detecting unit may be configured to be located below the density detecting unit and detect a temperature of the fuel.

Abstract: In an evaporated fuel treatment apparatus, for reducing blow-by of an evaporated fuel component to the outside, the evaporated fuel treatment apparatus includes at least one adsorption chamber filled with a first adsorbent and a second adsorbent that adsorb and desorb a fuel component of evaporated fuel, and the first adsorbent has a higher pore volume than the second adsorbent with respect to effective pores that effectively adsorb and desorb a low-boiling fuel component, and the first adsorbent has a lower pore volume than the second adsorbent with respect to pores smaller than the effective pores and having higher adsorbability and lower desorbability on butane than the effective pores.

Abstract: A sensor device may be configured to detect a level of liquid, a concentration of a specific substance included in the liquid, and a temperature of the liquid. The sensor device may comprise a substrate, a level electrode configured to be disposed on the substrate and detect the level, an electrode for liquid quality configured to be disposed on the substrate and detect the concentration, a temperature electrode configured to be disposed on the substrate and detect the temperature, and a reference electrode configured to be disposed on the substrate and maintain a reference electric potential. The reference electrode may be disposed at least between two of the level electrode, the electrode for liquid quality and the temperature electrode.

Abstract: In an electric pump, a vortex chamber may be formed by a clearance between an outer circumferential surface of an impeller and an inner circumferential surface of a casing. A low rigidity part may be provided to a supporting portion or a shaft, or to both of them. The low rigidity part may be formed such that while the electric pump operates, a center point of the shaft in a top view of the shaft moves along a specific line which is parallel to a tangent line of the outer circumferential surface of the impeller at the specific position and passes through the center point of the shaft while the electric pump does not operate, or moves to one of two areas divided by the specific line. The one of the two areas may he opposite to the other of the two areas that includes the specific position.

Abstract: A method for cooling an adsorbent material filled in a housing of an adsorbent-canister in a vehicle. The vehicle preferably has a cooler and a fuel door. The method may include the steps of detecting an opened or closed state of the fuel door, and when the fuel door is open, starting the cooler in order to cool the adsorbent material.

Abstract: A brushless motor includes a rotor and a stator. The stator includes a first core and a second core opposing the first core, between which the rotor is disposed. Each of the first core and the second core includes U-phase teeth, V-phase teeth, and V-phase teeth, each of which is extending parallel to one another and having a tip end opposing the rotor. A tooth located at one end of the first core and a tooth located at another end of the second core are connected to one another by a first nonmagnetic member, and a tooth located at another end of the first core and a tooth located at one end of the second core are connected to one another by a second nonmagnetic member.

Abstract: A stator of a motor may comprise a first core, a second core and a resin layer. Each of the first core and the second core may comprise a yoke and three pieces of teeth configured to be disposed on the yoke. The resin layer may comprise a first void configured to contact a first opposing surface, opposing the second core, of the first core and contact a second opposing surface, opposing the first core, of the second core and a second void configured to contact a first part, extending parallel to a direction along which the first core opposes the second core, of a surface of the first core and contact a second part, extending parallel to the direction along which the first core opposes the second core, of a surface of the second core.

Abstract: An internal combustion engine system having a fuel tank for storing fuel to be supplied to an engine and an exhaust passage in which exhaust gas is to be exhausted from the engine, wherein the internal combustion engine system includes: a closing member to close the exhaust passage; an exhaust gas introduction passage connecting the exhaust passage and the fuel tank; and a controller configured to close the exhaust passage by the closing member after the engine is stopped to store the exhaust gas in the exhaust passage and to introduce the exhaust gas stored in the exhaust passage into the fuel tank via the exhaust gas introduction passage.

Abstract: A fuel pump may be configured to suck fuel into a case and discharge the fuel outside the case. The fuel pump may comprise a rotor, a bearing and a reference terminal. The rotor may be configured to be disposed within the case and include a shaft The bearing may be configured to be disposed within the ease, be made from metal and support the shaft rotatably. The reference terminal may be configured to be maintained at a specific electric potential. The bearing may be configured to electrically connect with the reference terminal. The specific electric potential may be lower than an electric potential of the bearing.

Abstract: In an EGR valve, an actuator includes a coil, a rotor body to be driven to rotate when the coil is energized with electric current, and a converting mechanism to convert rotational movement of the rotor body into stroke movement of the rod to bring a valve into or out of contact with a seat. The rod includes a stopper that will contact with a protrusion of the rotor body when the valve is placed in a full closed state. An end face of the stopper and an end face of the protrusion are slanted with respect to a stroke direction of stroke movement of the rod.

Abstract: A sensor device may comprise a base portion extending in a depth direction of a container, a pair of electrodes attaching to a surface of the base portion and a filter portion surrounding the pair of electrodes. In a plan view perpendicular to the depth direction of the container, a measuring range in which the pair of electrodes may be disposed and a non-measuring range in which the pair of electrodes may be not disposed are provided in a circumferential direction with the base portion at a center. The filter portion may comprise a filter, and a wall having a lower liquid permeability than the filter. At least a part of the wall may be located within the measuring range.

Abstract: Disclosed is a flow control valve capable of preventing the seat portion from being interfered with when the valve body is operated. A PCV valve is equipped with a case, a valve body, and a spring. A measurement portion is formed by a measurement hole of a seat portion formed halfway through a gas path 50 and a measurement surface formed on the valve body. Through axial movement of the valve body, the path sectional area of the measurement portion is adjusted, whereby the flow rate of a fluid is controlled. Formed on the valve body are a plurality of guide ribs protruding radially and having sliding surfaces configured to be brought into sliding contact with the inner peripheral surface of the measurement hole. A maximum diameter surface portion of the measurement surface is formed in an outer diameter. This outer diameter is preferably smaller than the diameter of a circumferential surface. The circumferential surface preferably includes the sliding surfaces of the guide ribs.

Abstract: A brushless motor comprises a rotor and a stator comprising a plurality of core plates laminated on one another. The core plates include a plurality of teeth portions. The plurality of core plates includes a first core plate and a second core plate, a combination of magnetic resistances of the teeth portions of the first core plate being adjusted at a first condition, and a combination of magnetic resistances of the teeth portions of the second core plate being adjusted at a second condition. Magnetic resistances of magnetic paths formed by the plurality of laminated teeth portions are adjusted to be same by adjusting a ratio of a number of the first core plates to a number of the second core plates.