Abstract: A pressure regulator is connected to a fuel pipe to which fuel is supplied by a feed pump. There is formed a fuel channel in the pressure regulator for returning fuel from within the fuel pipe to the fuel tank. In the pressure regulator, there are also formed a stopper and a valve body which collectively reduce the fuel flow area of the fuel channel as a result of an increase in the fuel pressure within the fuel pipe. This makes the fuel within the fuel pipe less likely to be released through the aforementioned fuel channel. For this reason, it is possible to correspondingly increase the fuel pressure within the fuel pipe in an efficient manner by increasing operating rate of the feed pump under conditions where the fuel pressure within the fuel pipe is high.

Abstract: A canister arrangement structure in a fuel vapor recovery device includes a canister that has built therein an adsorbent for adsorbing fuel and temporarily collects fuel vapor generated in a fuel tank of an internal combustion engine, the canister is arranged between an exhaust pipe of the internal combustion engine and the fuel tank.

Abstract: An evaporation system leak diagnostic apparatus that purges fuel vapor from a fuel tank into an intake system of an internal combustion engine via a canister, includes: a first closed system leak diagnostic unit that executes a leak diagnostic on a first closed system based on a tank internal pressure detected by a tank internal pressure detecting device while the first closed system is formed with a first closed system forming device; and a second closed system leak diagnostic unit that introduces pressure in the first closed system into a second closed system by forming a second closed system with a second closed system forming device, and executes a leak diagnostic on the second closed system based on the tank internal pressure detected by the tank internal pressure detecting device, after the leak diagnostic by the first closed system leak diagnostic unit.

Abstract: A fuel tank that stores a liquid fuel is equipped with a float member floating on the fuel stored in the fuel tank. In this fuel tank, the float member is so formed as to cover a liquid surface of the liquid fuel.

Abstract: The present invention discloses a heater structure that is composed of a heat generator and a mold. The heat generator is comprised of a PTC heating element having a pair of electrode layers, a first electrode terminal, a second electrode terminal, an insulation case that is a box shape with one side opened. An opening surface of the insulation case faces with the air pump, a protective sheet is placed, and a sum of a thickness of the mold with which the air pump is in contact and a thickness of the protective sheet is thinner than a thickness on an opposite side of the mold in the heater.

Abstract: A pressure regulator is connected to a fuel pipe to which fuel is supplied by a feed pump. There is formed a fuel channel in the pressure regulator for returning fuel from within the fuel pipe to the fuel tank. In the pressure regulator, there is also formed a stopper which can come into contact with a valve body when the valve body is displaced as a result of an increase in fuel pressure within the fuel pipe. The stopper reduces the fuel flow area of the fuel channel when the valve body is displaced as a result of the increase in the fuel pressure within the fuel pipe. Thus, the fuel flow area of the fuel channel is reduced as mentioned above when the fuel pressure within the fuel pipe is high. This makes the fuel within the fuel pipe less likely to be released through the aforementioned fuel channel.

Abstract: An evaporation system leak diagnostic apparatus that purges fuel vapor from a fuel tank into an intake system of an internal combustion engine via a canister, includes: a first closed system leak diagnostic unit that executes a leak diagnostic on a first closed system based on a tank internal pressure detected by a tank internal pressure detecting device while the first closed system is formed with a first closed system forming device; and a second closed system leak diagnostic unit that introduces pressure in the first closed system into a second closed system by forming a second closed system with a second closed system forming device, and executes a leak diagnostic on the second closed system based on the tank internal pressure detected by the tank internal pressure detecting device, after the leak diagnostic by the first closed system leak diagnostic unit.

Abstract: A canister arrangement structure in a fuel vapor recovery device includes a canister that has built therein an adsorbent for adsorbing fuel and temporarily collects fuel vapor generated in a fuel tank of an internal combustion engine, the canister is arranged between an exhaust pipe of the internal combustion engine and the fuel tank.

Abstract: A latent heat storage material, in which a phase-change substance that changes its phase from a solid to a liquid when the temperature of stored fuel rises, is disposed in a fuel tank of the present invention.

Abstract: A fuel tank that stores a liquid fuel is equipped with a float member floating on the fuel stored in the fuel tank. In this fuel tank, the float member is so formed as to cover a liquid surface of the liquid fuel.

Abstract: On the assumption that pressure Pm1 (MPa) of a boss portion outside space determined by a restrictor and a flow regulating valve provided midway in an oil feed passageway is expressed by Pm1=Ps+&agr;, and a differential pressure value at which a difference between high and low pressures becomes minimum in a running pressure range of a scroll compressor is represented by min(Pd−Ps), the value a in the above expression is set to fall in a range expressed by 0<&agr;<min(Pd−Ps). Here, Ps represents suction pressure (MPa) of the compressor, and Pd represents discharge pressure (MPa) of the compressor.

Abstract: A compressor includes a compression mechanism part for compressing refrigerant sucked from an outside of the hermetic container and discharging compressed refrigerant to a discharge space, an electric motor part composed of a stator and a rotor, facing a first space which is at an opposite side of the discharge space with respect to the compression mechanism part in the hermetic container, for driving the compression mechanism part through a main shaft, a passage at an external circumferential side of the compression mechanism part, for connecting the discharge space with the first space, and a fan provided at an end of the rotor, facing the first space. The refrigerant discharged into the discharge space passes through the passage at the external circumferential side of the compression mechanism part to reach the first space, and passes the fan to be discharged to the outside of the hermetic container.

Abstract: A scroll compressor including a guide frame (22) for fixing a fixed scroll member (12) and a compliant frame (24) for supporting an oscillating scroll member (14) in the axial direction of the scroll compressor in the guide frame (22), wherein the guide frame (22) has a plurality of cylindrical surfaces (33, 35), and the compliant frame (24) has a plurality of cylindrical surfaces (23, 25) which engage with the cylindrical surfaces (33, 35), and wherein in order to facilitate assembling of the guide frame (22) and the compliant frame (24), the first cylindrical surfaces (25, 35) are first engaged with each other when the compliant frame (24) is inserted into the guide frame (22), that is, the cylindrical surfaces are engaged in the order of increase in diameter.

Abstract: A structure is provided that prevents excessive force from acting on a fastening portion where a guide frame is fastened to a sealed container. A fastening position of the guide frame and sealed structure is set within a range bounded by an upper meshing circumferential inner surface of the guide frame together with an upper meshing circumferential outer surface of a compliant frame and a lower meshing circumferential inner surface of the guide frame together with a lower meshing circumferential outer surface of the compliant frame.

Abstract: According to a scroll compressor of the present invention, at least one of a diameter space between an upper fitting surface of the guide frame and an upper fitting surface of the compliant frame at an upper fitting part where the upper fitting surface of the guide frame contacts with the upper fitting surface of the compliant frame, and a diameter space between a lower fitting surface of the guide frame and a lower fitting surface of the compliant frame at a lower fitting part where the lower fitting surface of the guide frame contacts with the lower fitting surface of the compliant frame is set to be equal to or shorter than a diameter space between the rotor and the stator.

Abstract: A refrigerant compressor improved in pressure-resistant strength of a closed vessel. In a prior-art refrigerant compressor, a three-phase integral type sealed terminal in which three pins connected to a three-phase power source are disposed on one metal base portion, is attached to a body portion of a closed vessel for supplying electric power to an electric motor. When a high hydrostatic pressure load is applied to the closed vessel, the closed vessel is deformed into a barrel shape, and the sealed terminal pulled in the circumferential direction due to the deformation of the closed vessel is deformed elliptically. There may arise a problem with a glass material for insulating the metal base portion from the pins.

Abstract: A compressor includes a compression mechanism part for compressing refrigerant sucked from an outside of the hermetic container and discharging compressed refrigerant to a discharge space, an electric motor part composed of a stator and a rotor, facing a first space which is at an opposite side of the discharge space with respect to the compression mechanism part in the hermetic container, for driving the compression mechanism part through a main shaft, a passage at an external circumferential side of the compression mechanism part, for connecting the discharge space with the first space, and a fan provided at an end of the rotor, facing the first space. The refrigerant discharged into the discharge space passes through the passage at the external circumferential side of the compression mechanism part to reach the first space, and passes the fan to be discharged to the outside of the hermetic container.

Abstract: According to a scroll compressor of the present invention, at least one of a diameter space between an upper fitting surface of the guide frame and an upper fitting surface of the compliant frame at an upper fitting part where the upper fitting surface of the guide frame contacts with the upper fitting surface of the compliant frame, and a diameter space between a lower fitting surface of the guide frame and a lower fitting surface of the compliant frame at a lower fitting part where the lower fitting surface of the guide frame contacts with the lower fitting surface of the compliant frame is set to be equal to or shorter than a diameter space between the rotor and the stator.

Abstract: On the assumption that pressure Pm1 (MPa) of a boss portion outside space determined by a restrictor and a flow regulating valve provided midway in an oil feed passageway is expressed by Pm1=Ps+&agr;, and a differential pressure value at which a difference between high and low pressures becomes minimum in a running pressure range of a scroll compressor is represented by min(Pd−Ps), the value a in the above expression is set to fall in a range expressed by 0<&agr;<min(Pd−Ps). Here, Ps represents suction pressure (MPa) of the compressor, and Pd represents discharge pressure (MPa) of the compressor.

Abstract: A scroll compressor including a guide frame (22) for fixing a fixed scroll member (12) and a compliant frame (24) for supporting an oscillating scroll member (14) in the axial direction of the scroll compressor in the guide frame (22), wherein the guide frame (22) has a plurality of cylindrical surfaces (33, 35), and the compliant frame (24) has a plurality of cylindrical surfaces (23, 25) which engage with the cylindrical surfaces (33, 35), and wherein in order to facilitate assembling of the guide frame (22) and the compliant frame (24), the first cylindrical surfaces (25, 35) are first engaged with each other when the compliant frame (24) is inserted into the guide frame (22), that is, the cylindrical surfaces are engaged in the order of increase in diameter.