Abstract: Disclosed is a control device of an engine 1 including an injector. The injector has a needle which is displaced between a close position where no fuel is allowed to flow into a sac portion and an open position where the fuel is allowed to flow into the sac portion. The control device has a fuel injection controller controlling a fuel injection period and an injector controller controlling a motion of the needle. The injector controller executes control to reduce a moving speed of the needle before the needle reaches the closed position when the injection period ends.

Abstract: A structure of a combustion chamber for an engine includes a crown surface of a piston, a combustion chamber ceiling surface, an injector and an ignition plug provided on the combustion chamber ceiling surface, and an intake opening and an exhaust opening opened in the combustion chamber ceiling surface. A side where the intake opening is opened is defined as an intake port side, and a side where the exhaust opening is opened is defined as an exhaust port side. An ignition portion of the ignition plug is disposed on the intake port side. The ignition plug is ignited at a timing after the piston passes a compression top dead center. The injector is disposed on the center portion, and is configured to inject fuel toward the exhaust port side. A cavity is provided on the crown surface. A reverse squish flow generation portion is provided in the combustion chamber.

Abstract: A structure of a combustion chamber for an engine includes a crown surface of a piston, a combustion chamber ceiling surface formed on a cylinder head, an injector and an ignition plug provided on the combustion chamber ceiling surface, and an intake opening and an exhaust opening opened in the combustion chamber ceiling surface. A side where the intake opening is opened is defined as an intake port side, and a side where the exhaust opening is opened is defined as an exhaust port side, with respect to a position, as a reference, where an ignition portion of the ignition plug is disposed in a plan view from one side in a cylinder axis direction, the injector is configured to inject fuel toward the exhaust port side, and a reverse squish flow generation portion, which draws an air-fuel mixture toward the intake port side, is provided in the combustion chamber.

Abstract: A structure of a combustion chamber for an engine includes a crown surface of a piston, a cylinder wall surface, a combustion chamber ceiling surface, and an ignition plug which includes an ignition portion. The crown surface of the piston includes: a cavity recessed in the cylinder axis direction; a parallel surface portion which is in parallel to a corresponding region on the combustion chamber ceiling surface at a position above the cylinder axis direction with a gap, when the piston is at a compression top dead center; and an inclined surface portion formed to continue to the parallel surface portion in such a way as to be directed to the ignition plug, when the piston is at a compression top dead center. The parallel surface portion and the corresponding region, in combination, constitute a squish flow generation portion generating a squish flow when the piston is lifted.

Abstract: A structure of a combustion chamber for an engine includes: a crown surface of a piston; a combustion chamber ceiling surface formed on a cylinder head; and an ignition plug mounted on the combustion chamber ceiling surface, and including an ignition portion disposed in such a way as to face the combustion chamber. The crown surface of the piston includes a cavity which is recessed in a cylinder axis direction in a region including a position below the ignition portion of the ignition plug in a plan view from the cylinder axis direction. A rim portion of the cavity includes a guide portion, raised in the cylinder axis direction with respect to an inner region of the rim portion, interposing the ignition portion when the piston is at a compression top dead center, and configured to guide an air-fuel mixture within the combustion chamber to the ignition portion.

Abstract: A structure of a combustion chamber for an engine includes: a crown surface of a piston; a combustion chamber ceiling surface formed on a cylinder head; and an ignition plug mounted on the combustion chamber ceiling surface, and including an ignition portion disposed in such a way as to face the combustion chamber. The crown surface of the piston includes a cavity which is recessed in a cylinder axis direction in a region including a position below the ignition portion of the ignition plug in a plan view from the cylinder axis direction. A rim portion of the cavity includes a guide portion, raised in the cylinder axis direction with respect to an inner region of the rim portion, interposing the ignition portion when the piston is at a compression top dead center, and configured to guide an air-fuel mixture within the combustion chamber to the ignition portion.

Abstract: A structure of a combustion chamber for an engine includes a crown surface of a piston, a cylinder wall surface, a combustion chamber ceiling surface, and an ignition plug which includes an ignition portion. The crown surface of the piston includes: a cavity recessed in the cylinder axis direction; a parallel surface portion which is in parallel to a corresponding region on the combustion chamber ceiling surface at a position above the cylinder axis direction with a gap, when the piston is at a compression top dead center; and an inclined surface portion formed to continue to the parallel surface portion in such a way as to be directed to the ignition plug, when the piston is at a compression top dead center. The parallel surface portion and the corresponding region, in combination, constitute a squish flow generation portion generating a squish flow when the piston is lifted.

Abstract: A structure of a combustion chamber for an engine includes a crown surface of a piston, a combustion chamber ceiling surface, an injector and an ignition plug provided on the combustion chamber ceiling surface, and an intake opening and an exhaust opening opened in the combustion chamber ceiling surface. A side where the intake opening is opened is defined as an intake port side, and a side where the exhaust opening is opened is defined as an exhaust port side. An ignition portion of the ignition plug is disposed on the intake port side. The ignition plug is ignited at a timing after the piston passes a compression top dead center. The injector is disposed on the center portion, and is configured to inject fuel toward the exhaust port side. A cavity is provided on the crown surface. A reverse squish flow generation portion is provided in the combustion chamber.

Abstract: A structure of a combustion chamber for an engine includes a crown surface of a piston, a combustion chamber ceiling surface formed on a cylinder head, an injector and an ignition plug provided on the combustion chamber ceiling surface, and an intake opening and an exhaust opening opened in the combustion chamber ceiling surface. A side where the intake opening is opened is defined as an intake port side, and a side where the exhaust opening is opened is defined as an exhaust port side, with respect to a position, as a reference, where an ignition portion of the ignition plug is disposed in a plan view from one side in a cylinder axis direction, the injector is configured to inject fuel toward the exhaust port side, and a reverse squish flow generation portion, which draws an air-fuel mixture toward the intake port side, is provided in the combustion chamber.

Abstract: Disclosed is a control device of an engine 1 including an injector. The injector has a needle which is displaced between a close position where no fuel is allowed to flow into a sac portion and an open position where the fuel is allowed to flow into the sac portion. The control device has a fuel injection controller controlling a fuel injection period and an injector controller controlling a motion of the needle. The injector controller executes control to reduce a moving speed of the needle before the needle reaches the closed position when the injection period ends.

Abstract: According to one aspect of the present invention, there is provided a process of fabricating a steel material by performing a heat treatment to a steel material having high strength, in order to reduce hardness at one part of the steel material to less than hardness at other parts of the steel material, wherein the heat treatment comprises a heating step in which a portion having a certain depth from a surface of the steel material is rapidly heated by induction heating or direct energization heating, and a cooling step in which the steel material, which has been subject to the heating step, is rapidly cooled a predetermined time after the heating step, and a heating temperature in the heating step is Ac1 transforming point or more.

Abstract: In a computer system for analyzing the flow of an intake/exhaust gas of, for example, a four-cycle multi-cylinder engine through application of CFD, the dimension of a space where the flow of the intake/exhaust gas is analyzed can be selected with respect to each of four processes, that is, intake, compression, expansion and exhaust processes, of each cylinder (in selecting step S1), and a physical model for simulating the flow of the intake/exhaust gas from a part of an intake system to a part of an exhaust system of the engine in the dimension selected with respect to each of the four processes is set (in model setting steps S2, S31, S41 and S51). The flow of the intake/exhaust gas is subjected to a CFD operation using the physical model, and chemical reactions caused in combustion is simulated (in operating steps S33, S43 and S53), so as to output an output about engine performance on the basis of the results of these simulation operations.

Abstract: In a computer system for analyzing the flow of an intake/exhaust gas of, for example, a four-cycle multi-cylinder engine through application of CFD, the dimension of a space where the flow of the intake/exhaust gas is analyzed can be selected with respect to each of four processes, that is, intake, compression, expansion and exhaust processes, of each cylinder (in selecting step S1), and a physical model for simulating the flow of the intake/exhaust gas from a part of an intake system to a part of an exhaust system of the engine in the dimension selected with respect to each of the four processes is set (in model setting steps S2, S31, S41 and S51). The flow of the intake/exhaust gas is subjected to a CFD operation using the physical model, and chemical reactions caused in combustion is simulated (in operating steps S33, S43 and S53), so as to output an output about engine performance on the basis of the results of these simulation operations.

Abstract: An information presentation system is provided with: a data server for providing a predetermined kind of information data classified into a plurality of preset data groups through a communication line; and a portable communication terminal apparatus connectable through the communication line to the data server. The portable communication terminal apparatus is provided with: a connecting device for connecting the portable communication terminal apparatus to the data server through the communication line; an input device for inputting or specifying a desirable code from among a plurality of data group codes each indicating respective one of the preset data groups; and a terminal side transmitting device for transmitting the inputted or specified code through the communication line to the data server.

Abstract: An information presentation system is provided with: a data server for providing a predetermined kind of information data classified into a plurality of preset data groups through a communication line; and a portable communication terminal apparatus connectable through the communication line to the data server. The portable communication terminal apparatus is provided with: a connecting device for connecting the portable communication terminal apparatus to the data server through the communication line; an input device for inputting or specifying a desirable code from among a plurality of data group codes each indicating respective one of the preset data groups; and a terminal side transmitting device for transmitting the inputted or specified code through the communication line to the data server.

Abstract: An image formation device in which an image according to image data received from an image data output device is selectively written by light beam in an optical image memory and the image is printed out on a recording medium, includes a light source for emitting light beam, a scanning device for scanning a surface of the optical image memory with the light beam, a switch for turning on or off the light beam, a sensing device for sensing from the image data a beam irradiating period T per a single pixel corresponding to a density of the pixel, and a controller for controlling the switch so that the light beam intermittently performs T/n period irradiation n times during a scanning period per a single pixel.

Abstract: An image formation apparatus for selectively storing image data received from image data outputting means in an optical image memory by beam light and printing it out on a recording medium, the image formation apparatus including, clocking means for clocking a predetermined time after completion of printing, and erasing means for erasing contents stored in the optical image memory after the predetermined time is passed.

Abstract: An automotive engine acceleration judging device sets threshold levels according to engine loads and engine speeds, respectively, so as to detect that the automotive engine is under acceleration when fluctuation levels in engine load are high, i.e., beyond at least one of the threshold levels. The engine load dependent threshold level is higher than the engine speed dependent threshold level, and each threshold level is changed so as to be higher when the engine operates at higher loads than when it operates at lower loads. When the acceleration judging device decides an acceleration of the engine is present, a lockup clutch of an automatic transmission with a fluid coupling is released to unlock the fluid coupling to at least allow slippage.

Abstract: A diversity receiver has distributors each of which is connected with each of a plurality of antennas, and as many antenna switches as there are receivers. Each of the antenna switches has as many contacts as there are distributors. The distributor distributes a radio frequency signal from the antenna into as many signal paths as there are receivers. Each of the antenna switches is connected with each of the distributors via the contact connected with the signal path. A demodulated signal selecting circuit has as many contacts as there are said receivers. The demodulated signal selecting circuit receives the demodulated output of the receivers via each of said second contacts to selectively output the demodulated outputs of the receivers.

Abstract: A sheet detecting device has a pair of first and second reflection type photosensors in both sides of upper and lower guide members of a sheet carrying path. A reflector member is disposed in the lower guide member facing to the first reflection type photosensor and a comparator for comparing the output signal of the first reflection type photosensor with a predetermined reference value which is used when an image receiving sheet is not fed in the sheet detecting device. The difference between the reflectances of the right side and wrong side of the sheet fed in the sheet detecting device is detected by the first and second reflection type photosensors, so that information of the image receiving sheet is obtained.