Abstract: An intake manifold made of synthetic resin includes first, second and third members stacked in sequence and welded to form the intake manifold; a collector extending inside the intake manifold in a direction of a line of cylinders, a part of wall of the collector being formed by the third member; a plurality of branch passages formed substantially by the first and second members and wound around an outer periphery of the collector; and a connector passage leading from the collector to an outer peripheral side of the branch passage. The first, second and third members are respectively provided with first, second and third cylinder portions that are coaxially arranged with each other in a position between adjacent two branch passages. The connector passage is formed by the first, second and third cylinder portions with the connector passage communicating with an inside space of the collector.

Abstract: A canister has a housing whose one end is provided with a charge port and a purge port and whose other end is provided with a drain port and a heater. The housing is divided into a no-heat-application section on a charge port and purge port side and a heat-application section on a drain port side. The heat-application section is further divided into at least two spaces of a first space located on the drain port side and a second space located on a no-heat-application section side. The first space is filled with an activated carbon whose BWC is equal to or greater than 6 g/dL and less than 10 g/dL, and the second space is filled with an activated carbon whose BWC is 13 g/dL or greater. The heater heats whole of the heat-application section including the first space and the second space.

Abstract: An electric pump includes an outer rotor rotatably disposed radially inward of a stator, the outer rotor including a plurality of permanent magnets in an outer circumferential surface thereof, a plurality of plate holding grooves being formed in an inner circumferential surface of the outer rotor; an inner rotor provided radially inward of the outer rotor, a plurality of slots being radially formed in an outer circumferential surface of the inner rotor; and a plurality of connecting plates each including a head portion and a radially-inner end portion, the head portion being formed in a substantially circular shape in cross section and fitted swingably into the plate holding groove, the radially-inner end portion being slidably fitted into the slot. Each of the plate holding grooves is located within a projection plane of the permanent magnet with respect to a circumferential direction of the outer rotor.

Abstract: A valve body unit (11) in which a plurality of valve bodies (17) which open and close intake passages (10) are attached on a rotational shaft (16) is inserted into inner sides of housing passages (28) of a housing (12) and, thereafter, a holder (13) is mounted in the housing (12) to rotatably support the valve body unit (11). A flange (14) is fixed onto an upper surface of the housing (12) on the holder (13) by means of a vibration welding and the holder (13) is retained with this flange (14) and the housing (12).

Abstract: An oil pump includes: an annular stator (2) having coils (22); a cylindrical outer rotor (3) having a plurality of permanent magnets (24); an inner rotor (4) positioned eccentrically to an inner peripheral side of the outer rotor (3); six linkage plates (5) which link between the outer rotor (3) and the inner rotor (4); and a drive shaft (6) on which the inner rotor (4) is attached. A pump action is obtained by rotating the outer rotor (3) and the inner rotor (action is obtained by rotating the outer rotor (3) and the inner rotor (4). Each of linkage plates (5) has a symmetrical cross sectional shape. A torque transmission is possible in the same way even if the outer rotor (3) is at a drive side and even if the inner rotor (4) is at the drive side.

Abstract: A variable displacement pump includes: a first pressure control chamber; a second pressure control chamber; a spring arranged to urge the cam ring in a second swing direction; a hydraulic pressure supply valve arranged to be opened by a predetermined hydraulic pressure, and thereby to introduce a control hydraulic pressure to the first control chamber; a connection passage formed in the housing or the cam ring, and arranged to connect the first pressure control chamber and the second pressure control chamber; and a relief circuit arranged to connect the second pressure control chamber and a low pressure side, to be opened or closed in accordance with a swing position of the cam ring, and to be closed when the cam ring is swung by a predetermined amount in the first direction.

Abstract: An oil drain structure for an oil mist separator including a drain pipe extending from the oil mist separator into the internal combustion engine, the drain pipe having an oil discharge hole extending through a lower end portion of the drain pipe along an axial direction of the drain pipe, and a check valve including a valve body disposed below the lower end portion of the drain pipe, the valve body acting to open and close the oil discharge hole from a side of a lower surface of the lower end portion of the drain pipe, a valve head portion fitted into the drain pipe with a fine clearance as an orifice and being moveable in the axial direction of the drain pipe, and a stem portion extending through the oil discharge hole to connect the valve body and the valve head portion with each other.

Abstract: A core unit 1 of a heat exchanger includes a plurality of core plates that are stacked on one another to alternately constitute oil passages 10 and cooling water passages 11, in which oil that is heat-exchanged in the core unit 1 is guided to an outlet port 23 after passing through a top connecting passage 18 and an oil outlet passage L3, and in which part of the oil is led from a lower end of an upper/lower oil passage L2 is guided to the outlet port 23 through an auxiliary passage 24, so that the amount of oil flowing in the oil outlet passage L3 is reduced thereby reducing a passage resistance.

Abstract: Oil strainer has a housing having a suction port and a discharge port and a filtration element dividing an inside of the housing into a suction port side and a discharge port side. The filtration element has a first filtration member having a coarse filter, a second filtration member having a fine filter and stacked at an upstream side or a downstream side of the first filtration member and a retainer plate having a plurality of oil pass openings and retaining the first and second filtration members. The retainer plate is stacked at a downstream side of the first and second filtration members. The second filtration member has at least one opening portion so that a part of the oil bypasses the second filtration member. One of the first and second filtration members has protruding and depressed portions that touch the other of the first and second filtration members.

Abstract: In an electrically driven dual pump, a cylindrical outer rotor is rotatably disposed with respect to the inner circumferential surface side of the housing and has a plurality of permanent magnets on an outer circumferential surface of the outer rotor to constitute a motor section in cooperation with coils of a housing, a partitioning plate is disposed to partition an inner circumferential side of the outer rotor into a first pump chamber and a second pump chamber, and each of first and second inner rotors is rotatably disposed within the first and second pump chambers with a rotation center of each of the first and second inner rotors eccentric to the center of the outer rotor and constitutes a space against the outer rotor which is communicated with a corresponding one of the suction ports and the corresponding one of the discharge ports.

Abstract: A resin-made molded cylinder head cover, which is light in weight and relatively thin particularly at a flange part thereof comprises a cover part that is rectangular in shape and has a plurality of plug holes aligned in a longitudinally extending center area of the cover part; a flange part that is integral with and extends around a periphery of the cover part, so that the cylinder head cover is shaped like a rectangular shallow dish; and thicker elongate bead portions that are integral with the cover part and extend respectively along laterally opposed sides of the longitudinally extending center area, each bead portion being thicker than a general area of the cover part.

Abstract: An intake noise reducing apparatus connected to an intake system of an internal combustion engine includes a bellows-shaped elastic member 14 connected through a communicating tube to an intake passage. An intake-noise reducing effect associated with an expansion-and-contraction deformation of the elastic member 14 can be obtained in addition to an intake-noise reducing effect obtainable as a Helmholtz-type resonator element. A peripheral wall 14c of the elastic member 14 includes a mountain portion 31 and a valley portion 32 connected through a taper wall 33 to each other. A crest portion of each of the mountain portion 31 and the valley portion 32 is a straight-line portion 35, 36. The straight-line portion 35, 36 is in a cylindrical shape, and hence suppresses a radial displacement which is caused by a change in sound pressure, so that an axial amplitude of the elastic member 14 can be secured by that much.

Abstract: By stacking a plurality of core plates (15) each of which has, around a peripheral edge of a base portion (30), an outer peripheral tapered portion (31) that expands outward, and joining the outer peripheral tapered portions (31) of adjacent core plates by brazing, a heat exchanging fluid passage (17, 18) is defined between the base portions (30) of the adjacent core plates. Outer and inner peripheral surfaces of the outer peripheral tapered portion are shaped to extend straightly in cross section. A leading end part of the outer peripheral tapered portion (31) is formed at the inner peripheral surface thereof with a recess (33) that is depressed toward the outer peripheral surface.

Abstract: An electric heater (7) is individually arranged at a position immediately upstream of a blowing port (6) that blows an air fed by a blower (4) into a vehicle room. The electric heater (7) is formed of a cylindrical case (15) loaded in the blowing port (6) and a heat generating sheet (16) arranged in the case (15). The heat generating sheet (16) is formed of a conductive fiber sheet obtained by making a carbon fiber into paper. Furthermore, the heat generating sheet is formed into a continuous strip and radially folded along pins (22) of the case (15). The air is heated while flowing along a surface of the heat generating sheet (16).

Abstract: An oil cooler has a core portion (1) formed of stacked core plates (5), a bottom plate (2), a second bottom plate (3) and a top plate (4), and these are brazed in a furnace. The core plate (5) has oil communication ports (13), cooling water communication ports (14) and an oil outlet port (15). The lower end core plate (5) has a boss portion (16) surrounding the cooling water communication port (14) and a boss portion (17) surrounding the oil outlet port (15). Opening portions (32, 33) opposite to the boss portions (16, 17) are formed through the bottom plate (2). Therefore, at the time of the brazing, a melted brazing material is not excessively gathered in the boss portion (16, 17) because the melted brazing material is absorbed in the opening portions (32, 33).

Abstract: Oil cooler is provided to include: a number of core plates each of which has three oil pass holes where oil flows and three cooling water pass holes where cooling water flows; heat-exchanging section where core plates are laminated to define inter-plate oil flow passage and inter-plate cooling water flow passage alternately between an adjacent pair of core plates, in which oil and cooling water can mutually independently flow in direction perpendicular to core plate lamination direction while changing its flow direction by U-turn thereby proceeding in core plate lamination direction as a whole; one end part located at one side of core plate lamination direction and provided with both oil inlet and oil outlet; and the other end part located at the other side of core plate lamination direction and provided with both cooling water inlet and cooling water outlet.

Abstract: A variable displacement pump includes a housing having a pair of end wall surfaces; an annular outer rotor guide swingably disposed between the pair of end wall surfaces; a cylindrical outer rotor; an inner rotor provided radially inward of the outer rotor and configured to rotate integrally with a drive shaft at a location eccentric relative to the outer rotor; and a plurality of coupling plates coupling the inner rotor and the outer rotor. The outer rotor is rotatably fitted into an outer rotor supporting surface of the outer rotor guide. A space between the inner rotor and the outer rotor is partitioned into a plurality of chambers by the plurality of coupling plates. A concave portion is formed in the outer rotor supporting surface such that the concave portion exists over an entire axial range between the both end surfaces of the outer rotor guide.

Abstract: A separator unit of an oil mist separator comprises a front unit including a perforated plate and a plurality of holding studs extending rearward from the perforated plate, a rear unit placed behind the perforated plate and including a base plate that is to be intimately put on a rear surface of the perforated plate and has an opening sized to permit insertion of the holding studs of the front unit, a plurality of connecting studs extending rearward from the base plate and an impinge plate held by leading ends of the connecting studs, and a fiber material piece put on the impinge plate, wherein when the front unit is coupled with the rear unit having the holding studs inserted through the opening of the base plate, the fiber material piece is sandwiched between the leading ends of the holding studs and the impinge plate.

Abstract: A blow-by gas inlet structure of an oil separator adapted to be placed above a cam chamber of an internal combustion engine, comprises a plate that forms a bottom wall of the oil separator; a blow-by gas inlet opening that is formed in the plate; an oil blocking structure that is provided below the blow-by gas inlet opening in a manner to divide the blow-by gas inlet opening into front and rear inlet openings through which the blow-by gas is led into the oil separator, the front and rear inlet openings being arranged in a first direction; and a transverse rib that is provided on the oil blocking structure and extends in a second direction that is perpendicular to the first direction.

Abstract: A canister has a housing whose one end is provided with a charge port and a purge port and whose other end is provided with a drain port and a heater. The housing is divided into a no-heat-application section on a charge port and purge port side and a heat-application section on a drain port side. The heat-application section is further divided into at least two spaces of a first space located on the drain port side and a second space located on a no-heat-application section side. The first space is filled with an activated carbon whose BWC is equal to or greater than 6 g/dL and less than 10 g/dL, and the second space is filled with an activated carbon whose BWC is 13 g/dL or greater. The heater heats whole of the heat-application section including the first space and the second space.