Abstract: An outdoor unit for a heat pump is usable under very cold weather conditions since the outdoor unit includes an auxiliary heating system which heats a heat exchanger in order to prevent the heat exchanger from forming frost and which also compensates for the decline in heating capacity. Further, the outdoor unit has an air flow preventing arrangement which prevents the flow of air through the heat exchanger when the absorption of the heat from the atmosphere is not efficient. The outdoor unit drives compressors by an internal combustion engine in order to reduce the consumption of electric power and the coolant for the engine is also utilized to provide auxiliary heat to the heat exchanger. The outdoor unit also includes a boiler to compensate for the lack of heating capacity in the engine waste heat. The boiler is operated when the atmospheric temperature is less than the predetermined value.

Abstract: A turbocharger control device for use in conjunction with an internal combustion engine includes a turbine driven by exhaust gases; a compressor connected with the turbine by having a shaft having a hole through the diameter; a photo projector and photo receiver facing each other across the shaft at the location of the through-hole for generating a light pulse signal proportional to the rate of rotation of the shaft; a photo-voltage converter connected optically with the photo receiver for converting the light pulse signal to an electrical pulse signal; an engine control unit connected electrically with the converter for generating a control signal in response to the electrical signal; an actuator connected with the engine control unit for movement in response to the control signal; an exhaust gas bypass passage connected between upstream and downstream portions of the turbine; and a bypass valve operatively connected to the actuator and associated with the bypass passage for controlling the flow through the

Abstract: The present invention provides a new and improved solenoid actuated valve device for controlling the flow of fluid comprising a body having an inlet and an outlet port extending therethrough, a hollow tubular core axially mounted within said body with one end thereof disposed in communication with said outlet port and having at least one radially extending aperture therethrough to provide communication between said inlet port and said outlet port, a bobbin slidably mounted on said core to control the effective open area of said aperture, a solenoid coil wound on said bobbin, an annular yoke resiliently mounted within said body, permanent magnets secured in said yoke so that the magnetic flux thereof intersects the windings of said solenoid coil at right angles thereto, a cover secured to said body in engagement with the other end of said core, said body, said cover member, said yoke and said core being of magnetic material to define a magnetic circuit with said permanent magnets to provide a magnetic force ca

Abstract: A solenoid actuated valve device for controlling the flow of fluid comprising a body having an inlet port, a first outlet port, a second outlet port, and a bore for fluid communication with the inlet and first outlet ports at one end thereof and for fluid communication with the second outlet port at the other end thereof. A magnetic hollow tubular core is axially mounted within the bore for dividing the bore into an annular outer chamber, a first inner chamber and a second inner chamber communicating among the inlet port, first outlet port and second outlet port, respectively, and the core has first and second apertures for fluid communication between the outer chamber and first and second inner chambers, respectively.

Abstract: An electromagnetic flow control valve assembly includes a valve body having first and second ports and a valve member for controlling fluid communication between said first and second ports. An annular diaphragm is connected at its inner periphery to the valve member and at its outer periphery to the valve body so as to define with said valve body first and second chambers. The first chamber is in continuous fluid communication with the first port through a passage in the valve member while the second chamber is in continuous communication with the second port. The area of the diaphragm subjected to fluid pressure within the second chamber being equal to the effective area of the valve member subjected to fluid pressure within the second chamber to thereby offset the force of fluid pressure acting on the valve member.

Abstract: An actuator device used with an engine-idle control system of an automobile provided with an air-conditioner, and is adapted so as to operate an operating rod in association with a throttle valve opening lever of an internal combustion engine.

Abstract: An electrically operated fluid control valve unit is associated with a moving-coil linear motor which includes the quantity of fluid flow across the tubular core, a permanent magnet for providing magnetic flux through the tubular core, a permanent magnet for providing magnetic flux through the tubular core, a moving-coil wound on the bobbin across the magnetic flux of the magnet to provide a linear force on the bobbin, and a pair of conductive springs connecting the moving-coil to an electric control circuit and biasing the bobbin toward its initial position. Each of the springs is insulated from one another and from the valve housing, the tubular core and the like to prevent from unexpected short of the springs.

Abstract: A diaphragm air pump assembly pneumatically associated with a vacuum source and an atmospheric air source, comprises two diaphragms interconnected by a vertically extending rod to define two vacuum operational chambers and two pump chambers, two valves for controlling the alternative admission of vacuum to the vacuum operational chambers, and two normally closed valves operable in response to movement of the diaphragms in unison with the rod, each of two corresponding constituent parts being disposed and mounted in a symmetrical arrangement with respect to the central axis of the pump assembly. When the diaphragms are moved in one direction, one of two normally closed valves is opened to admit the vacuum into one of two vacuum operational chambers while admitting atmospheric air into the other vacuum operational chamber.

Abstract: An orifice apparatus is provided which couples a vacuum advancer of a distributor associated with an engine for a vehicle with a carburetor of the engine. The orifice apparatus includes a body having an upper and a lower opening between which an isolation wall is formed in which a plurality of orifices are circumferentially spaced apart at an equal angular interval. A plurality of orifice members are disposed below the isolation wall and each has an orifice of a different diameter formed therein which is located below one of the plurality of orifices. A rotary plate is disposed above the isolation wall and is secured to a regulating member in the form of a rotatable shaft. A seal member is bonded to the lower surface of the rotary plate, which is formed with a passage port which can be brought into alignment with one of the plurality of orifices formed in the isolation wall.

Abstract: A temperature responsive switch is provided which comprises a pair of bimetal discs having different temperature-deformation characteristics, a pair of fixed electrical contacts and a movable electrical contact. The movable contact engages one of the fixed contacts in response to a deformation of the pair of bimetal discs or remain free from engagement with either fixed contact. The engagement of the movable contact with one or the other of the fixed contacts and the absence of its engagement with either fixed contact constitute three conditionswhich permits a detection of a temperature of at least three different regions.

Abstract: An electromagnetic valve assembly including a housing, a diaphragm member provided in the housing and defining first and second chambers therein, a first heat conducting plate member secured to the diaphragm member, a heat conductive output member secured to the first heat conductive plate member and extending outside of the housing, a heat conductive spring member one end of which is engaged with the heat conductive plate member, the spring member being positioned within the first chamber and normally biasing the diaphragm member in one direction, a solenoid coil positioned in the first chamber energized in repsonse to an electric signal, a contact operatively associated with the solenoid coil movable in response to energization of the solenoid coil, a first and second pressure source, a first valve member controlling fluid communication between the first chamber and the first pressure source in response to movement of the movable contact, a second valve member controlling fluid communication between the fir

Abstract: The solenoid actuated valve device is comprised of a housing of magnetic material having a radially disposed inlet and at least one axially disposed outlet in communication with the interior of a hollow magnetic core disposed within the body. An annular bobbin having a solenoid coil wound thereon is slidably mounted on the core and is normally biased into a position closing at least one elongated radially extending opening through the core. Permanent magnets are secured to the interior of the body in such a manner that the lines of flux intersect the solenoid coil at right angles thereto. Two springs normally bias the bobbin to the closed position and extend between one end of the bobbin and a spring support member disposed adjacent one end of the body.

Abstract: An integrated valve device includes a base board means and control valve means mounted thereon for an exhaust gas purifying system. The control valve means is provided at its outer surface with a pair of fingers adapted to be inserted into openings on the base board means. The fingers engage therefore with shoulders of the openings when mounted on the base board means.

Abstract: A valve device includes a base board and a suction pressure responsive valve having two ports defined by tubular portions. The base board is composed of a pair of superimposed plates and a sealing gasket between the plates. One of the plates is formed with a pair of channels and the other with a pair of openings communicating with the channels, respectively. The sealing gasket has a pair of tubular portions disposed respectively in the openings of the base board plate with radial clearances. The tubular portions of the suction pressure responsive valve are sealingly inserted respectively into the tubular portions in the sealing gasket.

Abstract: A thermally responsive valve comprising a body separated into two portions and having an inlet port and an outlet port, two passages connecting the inlet port with the outlet port, a bimetal operated valve provided in one of two passages, and a check-valve provided in the other passage for permitting fluid flow from the inlet port to the outlet port. The check-valve is made of elastic material such as synthetic rubber and used as a sealing member between the two portions of the body.

Abstract: An integrated control device has a plurality of exhaust gas control units and base board means for mounting the control units thereon. The base board means is provided with fluid passage means and port opening means communicating therewith and adapted to be mated with port means in the control units so as to establish necessary fluid communication among the control units. Thus, the arrangement of the components used in an exhaust gas cleaning system can be made compact and readily accessible.

Abstract: A solenoid actuated valve device for electrically controlling the flow of fluid in response to electric signals. The valve device comprises a body member defining an internal chamber, a core being made of a magnetic material and comprising a central hollow portion, a bobbin slidably mounted on the core, a solenoid coil wound on the bobbin, a permanent magnet the magnetic flux of which may intersect at right angles to the winding of the solenoid coil, a yoke being made of a magnetic material and forming a magnetic circuit of the core, passages formed on the core, a sliding valve controlling the open area of the passages in response to the movement of the bobbin, and a spring biasing the bobbin so that the sliding valve may close the passages, whereby the flow of fluid may be controlled in proportion to the electric current.

Abstract: A control valve is provided with an inlet and outlet port and a variable flow control arrangement therebetween. The variable flow control arrangement is comprised of a hollow spool member having a plurality of orifices disposed in a spiral manner along the length of the spool and a sleeve having an annular valve member in contact with the spool movable axially of the spool to selectively expose one or more orifices to a valve chamber in communication with the outlet port. The sleeve member is connected to a flexible diaphragm having a first surface exposed to an atmospheric pressure chamber within the control valve and a second surface exposed to a signal vacuum chamber adapted to be connected to a vacuum supply. Spring means are provided in the signal vacuum chamber for normally biasing the sleeve into a position covering all of the orifices in the absence of a vacuum signal within the signal vacuum chamber.

Abstract: A temperature responsive valve assembly includes a body having an inlet port and first and second outlet ports, a thermostatic bimetal disk disposed within the body and responsive to a variation in temperature to change the curvature thereof from a first position to a second position, a first seat portion disposed within a first passage between the inlet port and the first outlet port, a second seat portion disposed within a second passage between the inlet port and the second outlet port, a valve member arranged between the first and second seat portions and engageable with both seat portions, a connecting means following the movement of the bimetal disk to thereby actuate the valve members between a first position wherein the valve member engages with the first seat portion to control the first passage and a second positon wherein the valve member engages with the second seat portion to control the second passage, a seat member having the second seat portion thereon and being adjustably threaded with the bo

Abstract: An exhaust gas pressure responsive valve assembly includes a first body of resinous material, a second body of metal material secured to the resinous material, a diaphragm member having an outer periphery held between both of the bodies so as to define an atmospheric chamber on the side of the resinous body and an exhaust gas pressure chamber on the side of the metal body, a spring biasing the diaphragm member against the exhaust gas pressure within the exhaust gas chamber, inlet and outlet ports provided in the resinous body, a passage provided in the resinous body for connecting the inlet and outlet ports, at least one metal plate secured to the diaphragm member, a guide member of resinous material secured to the metal plate, and a valve mechanism arranged within the guide member for controlling fluid communication between the passage and the atmospheric chamber in response to movement of the diaphragm.