Abstract: A capacity control valve includes a valve housing having a main valve seat portion formed on an inner peripheral surface, a main valve body that has a main valve portion capable of seating on the main valve seat portion and capable of blocking communication between a discharge port and a control port depending on a driving force of a solenoid, a relief valve that is opened by pressure, a first flow channel that allows the control port and a suction port to communicate with each other when the relief valve is opened. A second flow channel formed at least partially in parallel with the first flow channel allows the control port and the suction port to communicate with each other. A spool valve body is reciprocally disposed in a sleeve and capable of adjusting an opening of the second flow channel depending on the driving force of the solenoid.

Abstract: Variable displacement swash plate type compressor includes casing, rotating shaft, swash plate, piston, and inclination adjustment mechanism with first flow path connecting discharge chamber with crankcase and second flow path connecting crankcase with suction chamber to adjust inclination angle of the swash plate. An orifice hole decompressing fluid passing through the second flow path is formed in the second flow path. An orifice control mechanism controlling effective flow cross-sectional area of the orifice hole is formed on the second flow path. The orifice hole and control mechanism are formed to increase differential pressure in the crankcase and suction chamber, the effective flow cross-sectional area increases, and with further differential pressure increase it becomes a second area larger than zero and less than the first area. Achieved is rapid control of refrigerant discharge amount and prevention of reduction in compressor efficiency with reduction of time to switch to the maximum mode.

Abstract: A Vacuum Relief Assembly for I.C. Engine Intakes is disclosed. Also disclosed is a device that permits outside air into the intake tract of an internal combustion engine in the event of an excessively high vacuum condition within the intake tract. Furthermore, the device is constructed from durable materials and resists the excessive temperatures found in the engine compartment of a vehicle. Still further, the device is made from two half-cylindrical sections that mate to one another around the intake tract to form a cylindrical attachment. The method of installation enables the device to be installable onto the intake tract in situ, and without the need to cut out a section of the tract.

Abstract: An air cleaner intake door is provided. An air cleaner with at least one sidewall and an opening defined in the sidewall has a door mounted over the opening. The door is rotationally movable between an open and a closed position and a cam extends from the door. A spring is in contact with the door for biasing the door towards a closed position.

Abstract: An automatic bleed valve is disclosed, suitable for attachment to the inlet manifold of an internal combustion engine in order to provide an effective embodiment of the "air bleed" principle. Small amounts of inlet air are allowed into the inlet manifold at periods of high vacuum (low pressure) present during deceleration. The valve closure (38) is biassed by a biassing means (36), e.g. a compressing spring, which acts on the face of the closure disposed away from the seat (22). Other aspects provide for a valve seat which is adjustable in position relative to the closure, a closure and seat of different plastics materials, and a closure with a conical aspect, preferably paired with a seat with a complementary contact portion.

Abstract: The present invention provides a valve control apparatus which can be programmed to deliver a desired flow of gas. A valve 22 is connected to a stepper motor 28 which is controlled by a computer 32 to open or close the valve in steps within a gas flow line 24 to deliver a desired rate of flow. A flowmeter 30 is provided along the gas flow line 24 for measuring the flow and inputting this flow to the computer 32. The computer 32 calculates rate of flow information obtained from the flowmeter 30 and controls the stepper motor 28 to open or close the valve 22 as necessary in accordance with the received rate of flow information and a desired rate of flow preprogrammed into the computer 32. As a result, a precise desired rate of flow can be obtained. Also, position indicators 34 may be added to the valve 22 to indicate when the valve 22 is completely open or completely closed. The valve 22 may be provided with a return spring 36 to automatically close the valve 22 in the event of a power loss.

Abstract: An air metering valve or supplemental air valve connectable in the PCV system of an internal combustion engine having a shiftable valving member which regulates the quantity of supplemental air introduced into the PCV return. The valve spool is spring biased to the open position by a calibration spring. Pressure chambers are formed on opposite sides of the actuating pistona nd connectable to engine vacuum sources. As the degree of vacuum varies in the vacum sources, the valve spool shifts between an open and closed position. The valve may also be used to provide supplemental ambient combustion air under vacuum control independent of the PCV system. In another embodiment of the invention, the major valve components such as the valve body and shiftable valving member are fabricated from suitable plastic materials.

Abstract: An air metering valve or supplemental air valve connectable in the PCV system of an internal combustion engine having a shiftable valving member which regulates the quantity of supplemental air introduced into the PCV return. The valve spool is spring biased to the open position by a calibration spring. Pressure chambers are formed on opposite side of the actuating piston and connectable to engine vacuum sources. As the degree of vacuum varies in the vacuum sources, the valve spool shifts between an open and closed position. The valve may also be used to provide supplemental ambient combustion air under vacuum control independent of the PCV system.

Abstract: Valve device includes a valve chamber containing three spherical members in stacked relation which produce a limited pulsating air flow that is metered in precise amounts at any given time into the fuel/air path of a gasoline powered internal combustion engine. The valve chamber has a main entry orifice and one or more supplemental entry orifices, the size and number of which may be varied to obtain the desired range or spread of frequencies for a particular engine over its entire operating range.

Abstract: An antidetonant injection system for use in an internal combustion engine system having a novel valve in which the amount of antidetonant allowed to flow through the valve is directly related to the amount of engine demand ranging from zero flow when the engine is idling to maximum flow when the engine is at full throttle or under maximum load.

Abstract: The accumulator chamber communicates with the atmosphere through a passage which is formed therein with a restriction for restricting the cross sectional area of the passage or which is provided therein with a pressure control valve for opening the passage in response to a difference between the atmospheric pressure and the vacuum in the accumulator chamber which difference is above a predetermined value to maintain the vacuum differential between the accumulator and vacuum chambers above a predetermined value when the engine suction vacuum is above a predetermined value.

Abstract: A system for admitting secondary air to an engine intake manifold at the time of abrupt engine deceleration to avoid air/fuel mixtures which are momentarily too rich. The system is disabled from admitting secondary air when the engine is starting cold, and when its speed is slowly reduced.

Abstract: A two-cycle air-cooled engine has a carburetor with a throttle valve operated by a manual control member. A heat sensitive valve mounted on the engine cylinder head closes to cut off a supplementary air supply to the induction passageway and thereby richen the air-fuel mixture to prevent seizure upon overheating. When the manual control member is in position corresponding to idling of the engine, the member actuates means which introduce additional air into the induction passageway leading to the engine, to lean the air-fuel mixture.

Abstract: Valve device includes a valve chamber containing three spherical members of different hardnesses in stacked relation therein, which produce a limited pulsating air flow that is metered in precise amounts at any given time into the fuel/air path of a gasoline powered internal combustion engine to maintain a narrow band air/fuel ratio over substantially all operating modes. The valve chamber has relatively narrow entry and exit orifices in order to increase the velocity of the pulsations generated therein while at the same time reducing the amount of supplemental air flow through the device. The valve seat also has a conical shape to establish line contact with one of the spherical members to assist in obtaining maximum resonation during operation and provide a more positive seal when the engine is not running.

Abstract: An improved modulating air control valve which intermittently introduces air into the intake manifold of internal combustion engines as a function of the vacuum differential between the intake manifold and the ported vacuum at the carburetor. The valve includes a unidirectional flow valve which prevents hydrocarbon gases contained in the intake manifold from deteriorating the internal diaphragm of the valve.

Abstract: Disclosed is an apparatus having an air control valve for introducing an amount of air into the intake system of an internal combustion engine when the engine begins to decelerate, for preventing after-fire of an unburnt air-fuel mixture in the catalytic converter arranged in an exhaust pipe of the engine. The apparatus further includes a temperature detecting valve adapted for stopping the operation of the flow control valve during engine warm-up operations. Therefore, introduction of air into the intake system is stopped even if the engine begins to decelerate and, also, a proper engine warm-up operation can be carried out.

Abstract: A vacuum-operated, pressure-responsive valve is adapted for connection to the intake manifold of an internal combustion engine for monitoring supplemental airflow to the engine, the improvement of the present device providing precise adjustment of the supplemental airflow/intake manifold pressure relationship. An air cylinder, a pressure-responsive piston/valve mounted therein, a threadably mounted axially extending stem and valve-biasing spring, and a resiliently deflectable plate are assembled and cofunction to provide precision click stop adjustment of the supplemental airflow/engine vacuum relationship.

Abstract: An auxiliary air inlet device for internal combustion engines in motor vehicles includes an elongated tubular housing means adapted to be mounted relative to the combustion engine, and mounting means for removably connecting one end of an air filter to one end of the housing means, with means for connecting the housing means in spaced relation to the air filter to the carburetor and P.V.C. valve of the motor vehicle. A valve is mounted within the housing means and adapted to be moved between an open position permitting the flow of air therethrough to a closed position preventing the flow of air therethrough. The valve includes a valve member having an exterior surface conforming to the interior configuration of the housing means in the closed position of the valve, and inlet passages extending across the exterior surface of the valve member in spaced relationship to each other for the air to flow therethrough in the open position of the valve.

Abstract: A flow control valve for an exhaust gas purifying system which is divided into a first valve chamber into which the exhaust gases flow and a second valve chamber out of which the exhaust gases flow. A first valve means responsive to the exhaust gases controls the communication between the first and second valve chambers and a second valve means controls the operation of the first valve means in response to the negative pressure in an air intake system.

Abstract: An air induction valve adapted to introduce controlled amounts of additional air to the combustion chamber of an automotive engine when engine vacuum is low, which includes a hollow cylindrical casing having a chamber in communication with the intake manifold of the engine and with ambient air. A pair of perforated partition plates are disposed in parallel spaced apart relationship in the casing, with value means being provided between the partition plates, the valve means being vertically moveable between the plates in response to engine vacuum. Compression springs are provided between the valve means and the partition plates, with the valve means being normally biased open. When the automotive engine is operating under conditions resulting in high engine vacuum, the valve means is displaced to prevent the flow of ambient air through the air induction valve.

Abstract: A carburetor vacuum shutoff control valve for motor vehicles includes a snap-action spring which senses the the sudden vacuum increase in the carburetor each time the vehicle decelerates. The spring opens the valve during deceleration to allow air to pass through the valve from the atmosphere and immediately prevent the normal fuel mixture from being pulled in through either the idle or high-speed carburetor jets. Thus, during deceleration no gasoline is used, resulting in better fuel economy and no exhaust gas or crankcase emissions.

Abstract: A valve body having a bore formed therethrough defining an air inlet at one end and including a diametrically enlarged counterbore at the other end. The outer end of the counterbore is closed by means of a removable end wall having a small diameter opening formed therethrough and a piston is slidable in the counterbore and includes a shank portion coaxial therewith longitudinally reciprocal in the bore. A compression spring is disposed between the end wall and the piston and yieldingly biases the latter toward a position seated in the inner end of the counterbore. The valve body includes a lateral outlet bore or passage whose inner end opens into the first-mentioned bore intermediate the opposite ends thereof and the outer end of the lateral bore has one arm of a tubular T-fitting secured therein, the other two arms of the tubular T-fitting being adapted to be interposed in a positive crankcase ventilating hose.

Abstract: The control valve unit includes a vertical tubular member mounted at its upper end in the outlet opening of a filter unit incorporated in an internal combustion engine crankcase ventilation system. The tubular member is formed with slot means restricting the flow of vapors through the control valve unit. The lower end of the tubular member is provided with valve seat means upon which is normally seated a ball valve. The ball valve is unseated from the valve seat means under predetermined conditions.