Abstract: A server is used in a computer network telephone system having a computer network that can connect a plurality of terminal devices via at least one server to transmit data containing audio data between the terminal devices. The server provides predetermined services for the terminals when it receives predetermined information from the terminals.

Abstract: A control valve is disposed in a communication passage for communication between a combustion chamber and a chamber portion adjacent to the combustion chamber, and through the communication passage at least one of a fuel and an air-fuel mixture, and a highly compressed gas, are supplied or charged into the combustion chamber and the chamber portion adjacent thereto, respectively. The control valve includes a first control valve disposed in the first communication passage and a second control valve disposed in the second communication passage, the first control valve causes the first communication passage to open at a timing near closing of an exhaust port and causes it to close halfway in a compression stroke. The second control valve causes the second communication passage to open at a timing near closing of the scavenging ports and causes it to close prior to closing of the first communication passage.

Abstract: A two-cycle internal combustion engine includes a control valve disposed within a communicating passage between the combustion chamber and a chamber portion adjacent to the combustion chamber. The control valve is for controlling the opening and closing of the communicating passage. Blowby of an air-fuel mixture supplied to the combustion chamber can be prevented to reduce fuel consumption and increase the exhaust gas purifying performance. A communicating passage portion between the control valve and the fuel supply opening is configured to spray fuel from the control valve to a part or all of a wall surface of the communicating passage portion and the wall surface of the communicating passage portion is shaped to guide the fuel into the combustion chamber.

Abstract: The described exhaust gas purifier arrangement for an internal combustion engine provides gas purification efficiency while maintaining high output levels by providing an annular thin-walled catalyst element surrounding gas discharge openings in an expansion pipe having a closed downstream end whereby gas flowing in the expansion pipe is caused to flow radially through the thin-walled catalyst element into a chamber from whence it is conducted to a silencer element for further processing prior to discharge from a tail pipe.

Abstract: An audio recording and reproducing apparatus includes a controller for controlling the entire behaviors, hard disc for write and read of audio data, audio compression/expansion circuit for expanding compressed audio data, and external I/O port. The audio recording and reproducing apparatus is connected to a network service center to obtain desired music data from storage of the network service center and to store it in the hard disc.

Abstract: A combustion controller for a two-cycle engine which enables to cause self firing always at the optimum timing is provided. The combustion controller comprises an exhaust control valve 15 provided in the vicinity of an exhaust port 7 of the two-cycle engine 1 and capable of fully closing the exhaust port and driving control means 47, 38, 39, 40 and 37 to drive the exhaust control valve 15 according to a control map giving an exhaust opening ratio .theta..sub.e depending at least on the engine speed and the throttle valve opening ratio .theta..sub.th in order to control the pressure in the cylinder during up-stroke of the piston 8.

Abstract: A two-cycle internal combustion engine is provided which is capable of preventing the blow-by phenomenon, thereby improving both fuel economy and exhaust purifying performance, and superior in the response of fuel injection volume. In a two-cycle internal combustion engine wherein a chamber is disposed in scavenging passages which provide communication between a crank chamber and a combustion chamber, sealable control valves are disposed in an inlet and an outlet, respectively, of the chamber. A fuel feeding system is provided for the supply of fuel into the chamber. The chamber is brought into communication with one scavenging passage out of a plurality of parallel scavenging passages. The control valve, disposed in the chamber outlet which is on the combustion chamber side and on a scavenging downstream side, is positioned at the bottom part of the scavenging passage communicating with the chamber with respect to the control valve disposed in the chamber inlet which is on the crank chamber side.

Abstract: A deceleration control apparatus is provided which can control a two-cycle engine of the spark ignition type for a vehicle, in which fresh air in a combustion chamber can be self-ignited at an ignition timing preferable for operation of the engine at least upon low load operation, so that, when engine sudden deceleration requirements are satisfied, the combustion condition is automatically changed over from an activated heat atmosphere combustion condition to an ordinary combustion condition to allow sudden deceleration of the engine.

Abstract: An exhaust control device for a two-cycle engine which does not impart a change of a shape of an exhaust passage. An exhaust control device is provided in an exhaust port opening to an inner peripheral surface of a cylinder hole of a two-cycle engine wherein a cylinder wall portion adjacent to the exhaust port is formed with a rotational face obtained by rotating an arc having substantially the same curvature as the inner peripheral surface of the cylinder hole about a rotational axis C.sub.1 extending at a right angle to an axis C of the cylinder hole in the outside of the cylinder hole and a recess defined by both ends at a right angle to the rotational axis C.sub.1 and in communication with the exhaust port.

Abstract: This pressure sensor comprises a housing having a cavity at at least one end portion thereof, a pressure detecting element provided with the cavity and generating an electric signal corresponding to the pressure detected, a transmitter for transmitting the signal to the outside of the housing, and hermetically sealed with one end thereof connected to the pressure detecting element, a sealed medium provided within the cavity to prevent deterioration of the pressure detecting element, a diaphragm provided to cover the surface of the cavity, and a sealing element for sealing the sealed medium within the cavity and provided in a portion connected to the cavity of the housing, and further, a sealing ability of either the hermetic seal portion of the transmitter or of the sealing element is improved by utilizing a back pressure of a pressure medium.

Abstract: A two-cycle engine includes a port timing control device including a port timing control valve which is mounted on a cylinder block and has a timing control surface. The control valve is movable in a plane substantially perpendicular to the axis of a cylinder between a closed position where the valve is disposed in an exhaust passage with the control surface closing the end portion of the exhaust port closer to a cylinder head and an open position where the valve is held out of the exhaust passage to open the end portion of the exhaust port. The control surface is of an arcuate concave shape and having a curvature substantially equal to that of an inner peripheral surface of the cylinder so as to be smoothly continuous with the inner peripheral surface of the cylinder.

Abstract: A signal generator is located substantially in a center position within an iron cup opposingly to the fore end of a crankshaft, and a timing portion is provided on the inner periphery of the iron cup in a position opposing the signal generator, permitting to dispose the signal generator within the iron cup of a small diameter by effective use of the entire space of the iron cup without obstacled by the crankshaft.

Abstract: In an ignition system for internal combustion engines having a magneto generator for charging a capacitor and a thyristor for discharging the capacitor through an ignition coil upon receiving an ignition signal, an auxiliary capacitor and an associated transformer are provided as a source of the ignition signal. The auxiliary capacitor is charged through the transformer by each half-cycle of the magneto generator output of the opposite polarity with respect to the charging half-cycle of the capacitor. The auxiliary capacitor is discharged through the gate-cathode path of the thyristor under control of an auxiliary switching element to which a timing signal generator provides a timing signal at a proper ignition time.

Abstract: An ignition system for internal combustion engines in which a capacitor is charged at each one-polarity half-cycle of the output of a magneto generator and then the capacitor is discharged through a thyristor and a primary coil of an ignition coil when the thyristor is turned on. To turn on the thyristor, a gate-cathode current is supplied through a semiconductor switching element from an auxiliary capacitor which is charged by a timing generator which generates an output prior to only a predetermined ignition time. Although the semiconductor switching element is turned on by an ignition signal generating means, for example, a transformer, when the transformer produces an ignition signal at each the other-polarity half-cycle of the magneto generator output, the gate-cathode current is supplied to the thyristor only when the auxiliary capacitor has been charged by the timing generator.