Abstract: The present invention relate to a method for producing a transition metal ion bridging positive electrode material, wherein a mono-valent transition metal complex ion is intercalated into an interlayer space of layered transition metal oxide containing therein an alkali metal complex ion. The method of the present invention provides safe and simple operation without using acid and organic compound required in the prior art. The method of the present invention also provides an advantageous method in terms of cost performance by employing the procedure for producing a positive electrode via the layered transition metal oxide containing alkali metal complex ion within the layers, preferably via the layered manganese oxide buserite.

Abstract: A wireless repeater on a communication line has a structure that includes a plurality of wireless communication media, and a band control unit that changes the first bandwidth of the communications line according to increase and decrease in the number of wireless communication media by an operation dividing the first bandwidth of the communications line into a plurality of second bandwidths and an operation multiplexing a plurality of second bandwidths adjusting to the first bandwidth, responding to the number of the wireless communication media.

Abstract: The present invention provides a method for forwarding frames between Ethernet network nodes in which an output queue is provided for storing frames to be forwarded in the same direction, and more than one frame stored in the output queue are combined into a single frame, and the combined frame is then transmitted to the output port corresponding to that direction. With this configuration, packets encapsulated into a plurality of frames are stored in the output queue during transmission of the previous frames in the same direction or during their inter-frame gaps, and then combined into one packet, the combined packet being encapsulated into one frame to be transmitted. Accordingly, the amount of data that can be transmitted during a certain time period is increased by the amount equivalent to the reduced number of inter-frame gaps compared to when packets encapsulated into a plurality of frames are individually transmitted, thereby achieving more efficient frame forwarding.

Abstract: A control system for a continuously variable transmission, in which a responsiveness and a generation of an excessive force in a steady state are compatible. The control system makes a belt slippage prevention and a fuel economy improvement compatible by controlling a CVT with one of two parameter values: the first parameter value which is determined from an engine RPM and an accelerator opening, i.e., a torque information quick in the output timing but poor in the precision and which indicates the engine output torque; and the second parameter value which is determined from a fuel injection rate, i.e., a torque information excellent in the precision but slow in the output timing and which indicates the engine output torque.

Abstract: In an in-cylinder injection internal combustion engine which is placed in a selected one of a compression stroke injection mode in which fuel injection is conducted during a compression stroke, and a suction stroke injection mode in which fuel injection is conducted during a suction stroke, depending upon operating conditions of the engine, a fuel control device cut a fuel to be supplied to a combustion chamber of the engine when a certain fuel cut condition set depending upon the operating conditions of the engine is established, and resumes fuel injection in a compression stroke injection mode when a predetermined fuel cut return condition is established. In this fuel control device, when the fully closed state of a throttle valve is detected by an idle switch, or the engine speed is reduced by a large degree, the fuel injection is resumed in an intake stroke injection mode upon return from the fuel cut, so as to prevent undershoot of the engine speed.

Abstract: In a control apparatus for an in-cylinder injection spark-ignition internal combustion engine, which has a fuel injection valve (4) for injecting a fuel directly into a combustion chamber (5), and in which the fuel is injected mainly in a compression stroke, thereby undergoing stratified-charge combustion, when the internal combustion engine is operated in a specified operation region, a target load value Pe set corresponding to accelerator opening information based at least on a driver's operation is corrected with detected environmental parameter values correlated with an intake air density, engine control parameter values Tend and Tig are set in accordance with the corrected target load value Pec, and stratified-charge combustion is executed in accordance with the set engine control parameter values. Thus, the stratified-charge combustion can be carried out steadily and securely even if environmental parameter values, such as the atmospheric pressure, intake air temperature, etc.

Abstract: A fuel control device for cylinder injection type internal combustion engines which is capable of cutting off fuel supplying to a combustion chamber depending upon an operating state of the engine and suitable for use in cylinder injection type engines, in which a compression stroke mode can be selected for the purpose of enabling shifting to fuel cutoff and shifting to fuel injection from cutoff without incurring shock of switching in the engine.

Abstract: In order to securely prevent knocks from occurring upon starting and the like, while enhancing the compression ratio in a spark ignition type in-cylinder injection internal combustion engine which includes a fuel injection valve for directly injecting fuel into a combustion chamber, fuel is injected during a compression stroke in a specific operation region under an intermediate to high load to perform stratified combustion. Further provided is a control unit for driving and controlling the fuel injection valve such that, in the stratified combustion, prior to the fuel injection during the compression stroke, fuel is injected from the fuel injection valve during an intake stroke by such an amount that fuel fails to self-ignite.

Abstract: In an in-cylinder injection internal combustion engine which is placed in a selected one of a compression stroke injection mode in which fuel injection is conducted during a compression stroke, and a suction stroke injection mode in which fuel injection is conducted during a suction stroke, depending upon operating conditions of the engine, a fuel control device cut a fuel to be supplied to a combustion chamber of the engine when a certain fuel cut condition set depending upon the operating conditions of the engine is established, and resumes fuel injection in a compression stroke injection mode when a predetermined fuel cut return condition is established. In this fuel control device, when the fully closed state of a throttle valve is detected by an idle switch, or the engine speed is reduced by a large degree, the fuel injection is resumed in an intake stroke injection mode upon return from the fuel cut, so as to prevent undershoot of the engine speed.

Abstract: A control apparatus for a cylinder-injection spark-ignition internal combustion engine switches control mode in accordance with an engine operating state between compression stroke injection mode control, in which fuel is injected during the compression stroke to achieve stratified combustion, and suction stroke injection mode control, in which fuel is injected during the suction stroke to achieve uniform mixture combustion. Where regular gasoline lower in octane number than premium gasoline is used, a target mean effective pressure (P.sub.e), which is set in accordance with throttle opening (.theta..sub.th), is subjected to octane number-based correction to thereby compensate for an engine output change at the mode switching, whereby a torque shock at the time of mode switching is prevented.

Abstract: A control apparatus for a cylinder fuel injection internal combustion engine in which a compression stroke injection mode for carrying out fuel injection mainly in a compression stroke and a suction stroke injection mode for carrying out fuel injection mainly in a suction stroke can be selected in accordance with the operational condition of the engine. The apparatus aiming at enabling a suitable suction correcting amount to be set for each operational mode of the engine and the improvement of drivability thereby being improved.

Abstract: A control apparatus for an in-cylinder injection spark-ignition internal combustion engine, which includes a fuel injection valve for injecting a fuel directly into a combustion chamber and a spark plug for subjecting the fuel to spark ignition in the combustion chamber, and operates in an intake-stroke injection mode where the fuel is injected mainly in an intake stroke or a compression-stroke injection mode where the fuel is injected mainly in a compression stroke, comprises load correlation value calculation means for calculating a load correlation value of the internal combustion engine, ignition timing setting means for setting a reference ignition timing for the spark plug in accordance with the fuel injection mode and the load correlation value, and correction means for correcting the reference ignition timing in accordance with the operating state, the control apparatus further comprising correction limiting means for limiting the correction when the fuel injection mode is the compression-stroke injec

Abstract: An apparatus for controlling an ignition timing of a cylinder-injection gasoline engine includes an electronic control unit (ECU) for controlling the operation of an ignition coil. The ECU advances the ignition timing in accordance with the throttle opening in consideration of a delay in increase of the wall temperature of a combustion chamber when the acceleration of a vehicle is detected by the change of the throttle opening. In order to prevent knocking of the engine attributable to the increase of the wall temperature, the ECU gradually decreases an advance angle for the ignition timing to 0 with the passage of control time. When the engine is reaccelerated during the advance angle correction, the ECU newly sets an advance angle for the ignition timing and a control time, corresponding to the increase of the wall temperature.

Abstract: When the rotation speed of an in-cylinder injection engine 1 reduces to a rotation speed for increasing the amount of air which has been set on a higher rotation speed side than a fuel supply-return rotation speed, the amount of air is increased. Thereafter, when the rotation speed of the in-cylinder injection engine 1 reduces to the fuel supply-return rotation speed, the supply of fuel is resumed in the fuel cut mode to securely prevent the rotation speed from lowering and to reduce a torque down during resumption of fuel-supply and deteriorated fuel consumption.

Abstract: A control apparatus for a cylinder-injection spark-ignition internal combustion engine, having a fuel injection valve for directly injecting fuel to a combustion chamber and controlling the fuel injection valve on the basis of either an intake stroke injection mode for effecting fuel injection mainly in the intake stroke and a compression stroke injection mode for effecting fuel injection mainly in the compression stroke. A fuel injection quantity correction device corrects at least the fuel injection quantity supplied to the combustion chamber and an intake air quantity correction device corrects the intake air quantity supplied to the combustion chamber so that the preset target idle speed is reached when an idle operation state is detected.

Abstract: An ignition timing control system is provided for an in-cylinder injection internal combustion engine to reduce a torque shock upon switching a fuel injection mode between a compression-stroke injection mode, in which an injection of fuel is performed primarily in a compression stroke, and an intake-stroke injection mode, in which an injection of fuel is performed primarily in an intake stroke, in accordance with an operation state of said internal combustion engine. The ignition timing control system is provided with an injection timing correction unit for correcting ignition timing of a spark plug, which is arranged in a combustion chamber, upon switching said fuel injection mode.

Abstract: In an intra-cylinder injection type engine, a first fuel cut-off starting rotational speed, a first return rotational speed and a first target idling speed in a compression stroke injection mode, which is superior in both combustion and responsivity, are set at lower speeds than a second fuel cut-off starting rotational speed, a second return rotational speed, and a second target idling speed in a suction stroke injection mode. During an operation in the compression stroke injection mode, a fuel cut-off mode and an idle running of the engine are practiced at a low engine speed, to improve the fuel economy without causing deterioration of combustion.

Abstract: When starting of an in-cylinder injection engine 1 is detected, a cylinder discrimination, which discriminates each cylinder, is effected. After each cylinder is discriminated, it is determined whether or not a water temperature detected by a water temperature sensor 16 exceeds a predetermined value. When the water temperature is below the predetermined value, fuel injection is started from the fuel injection valve 4 of a cylinder subjected to at least one compression stroke. Thereby, the cylinder discrimination is effected quickly, and it is made possible to raise the temperature within the combustion chamber 5, by means lapse of at least one compression stroke, at low water temperatures at which the starting ability tends to be deteriorated, and the starting ability of the in-cylinder injection engine 1 at low water temperatures is improved while shortening the starting time.

Abstract: An engine control unit of a control apparatus for an in-cylinder injection internal combustion engine sets a fuel injection timing for a compression-stroke injection mode in accordance with a fuel injection quantity, and corrects the fuel injection timing according to an engine cooling water temperature. When the cooling water temperature is lower than a temperature observed when a warm-up operation is completed, the fuel injection timing for the compression-stroke injection mode is corrected for advance or retard on the basis of the engine characteristic proper, and fuel is injected at an appropriate time such that the fuel evaporation rate and the fuel stratification degree which permit the stabilized combustion of the fuel injected into the combustion chamber are attained, whereby the fuel is evaporated satisfactorily. Thus, the occurrence of misfire and the emission of harmful gas components can be restrained effectively during the warm-up operation in the compression-stroke injection mode.

Abstract: A control apparatus for a cylinder fuel injection internal combustion engine in which a compression stroke injection mode for carrying out fuel injection mainly in a compression stroke and a suction stroke injection mode for carrying out fuel injection mainly in a suction stroke can be selected in accordance with the operational condition of the engine. The apparatus aiming at enabling a suitable suction correcting amount to be set for each operational mode of the engine and the improvement of drivability thereby being improved.