Abstract: Although a method for changing a combustion method taking place in an internal combustion engine depending on running condition is proposed, it can be considered that conditions under which a combustion noise occurs naturally differ with different methods. A detection method of prior art is not compatible with different combustion methods and the accuracy of combustion noise detection was low. Accurate combustion noise detection is enabled by identifying a combustion mode taking place in the internal combustion engine, selecting a sensed frequency or frequency band of a combustion noise sensor that detects a combustion noise in a combustion chamber of the internal combustion engine according to the combustion mode, and detecting a combustion noise.

Abstract: A fuel cell includes: a cell which has a first electrode to be exposed to a first gas, a second electrode to be exposed to a second gas and an electrolyte interposed between the first and second electrodes and which has a first circumferential surface consisting of a curved surface curved in a circular shape and connected to make a full circle; a holding member which has a second circumferential surface consisting of a curved surface curved in a circular shape and connected to make a full circle and opposed to the first circumferential surface over the full circle, and which holds the cell; and an annular seal material which is interposed between the first circumferential surface and the second circumferential surface to separate a channel of the first gas and a channel of the second gas from each other as defined herein.

Abstract: An oil level gauge structure with an oil level gauge attachment hole functioning as an oil filling opening provided in a casing of an engine with an oil level gauge for closing up the attachment hole. The oil level gauge has a columnar portion formed on the lower end side of an external thread. The columnar portion has a predetermined length and is continuous with the external thread for attaching the oil level gauge to the casing. A guide hole into which the columnar portion is fitted to restrict the position of the columnar portion is provided on the lower end side of an internal thread of an attachment hole of the casing. The columnar portion of the oil level gauge is formed to have such an axial length that the lower end of the columnar portion exceeds the depth of the internal thread of the casing.

Abstract: A high pressure fuel pump control system for an internal combustion engine includes a fuel injection valve provided in a fuel common rail and a high pressure fuel pump for feeding fuel by pressure to the fuel injection valve. The high pressure fuel pump includes a pressurized chamber, a plunger for pressurizing fuel in the pressurized chamber, a discharge valve provided in a discharge passage, an intake valve provided in an intake passage, and an actuator for operating the intake valve. The control system includes a means for calculating a drive signal for the actuator to make a discharge amount or pressure of the high pressure fuel pump variable. The means reduces pressure in the common rail by opening the discharge valve to return the fuel in the fuel common rail to the pressurized chamber when a requirement for reducing the pressure in the fuel common rail is made.

Abstract: There is provided a video display apparatus the display screen of which is configured by combining a plurality of video display units in each of which light emitting display elements are arranged in a matrix manner; in the video display apparatus, there is provided a luminance correction means that corrects the luminance of video data situated in a correction subject area including respective end regions, of a first video display unit and a second video display unit, that face each other, in accordance with the spacing between the first video display unit and the second video display unit; and a linear noise that is caused at a seam portion between the video display units is suppressed, whereby the image quality of a video to be displayed can be raised.

Abstract: A display device includes: a plurality of display interconnects (3) provided so as to extend parallel to each other; a drive circuit (44aa) provided at one ends of the display interconnects (3), and connected to the display interconnects (3); a first interconnect (Wa) provided so as to cross the other ends of the display interconnects (3) in an insulating state; and a second interconnect (Wb) provided so as to cross the one ends of the display interconnects (3) in an insulating state, and so as to be connected to the first interconnect (Wa). When any of the display interconnects (3) is disconnected, a display signal from the drive circuit (44aa) is supplied to the other side of the disconnected display interconnect (3) sequentially through the second interconnect (Wb) and the first interconnect (Wa) in this order via an amplifier circuit (A).

Abstract: Provided is a control device of a direct injection engine, the control device that can prevent the amount of emission of soot from increasing and the exhaust performance from worsening when a restart request is made before an engine is stopped after an idle stop condition is satisfied. When a restart request is made before an engine is stopped after an idle stop condition is satisfied, at least one of the number of fuel injections in one combustion cycle and the air/fuel ratio of an air fuel mixture used for combustion is changed for each cylinder according to a piston position at that time.

Abstract: There is provided a high pressure fuel pump control system for an internal combustion engine which enables fuel pressure control with high precision without being restricted by the number of cylinders of the internal combustion engine or the number of phase sensor signals and the number of cam noses which vertically drives a plunger of a high pressure fuel pump even when a camshaft phase varies by a variable valve timing mechanism by using the high pressure fuel pump with a solenoid valve. The control system has a means which changes an effective stroke by driving the solenoid valve in the high pressure fuel pump, and has a means which changes the drive timing of the high pressure fuel pump based on a cylinder recognition value of the internal combustion engine with the cam angle detecting means as an origin.

Abstract: A heat exchanger comprises a first plate and a second plate. A coolant flow passage is formed by brazing the first plate and the second plate by use of a first brazing filler metal. A pipe is brazed between a first groove portion provided in the first plate and a second groove portion provided in the second plate by use of a second brazing filler metal. A pair of first flanges provided contiguously with the first groove portion. Each of the first flanges includes an inner surface. A pair of second flanges provided contiguously with the second groove portion. Each of the second flanges includes an inner surface. At least one of the inner surfaces of the first flanges and the inner surfaces of the second flanges is covered with the second brazing filler metal. The first and second flanges are held by jigs upon brazing of the pipe.

Abstract: A fuel injection control apparatus for an internal combustion engine which can inject a fuel injection quantity to a fuel injector with accuracy even when the fuel injection quantity is reduced than before is provided.

Abstract: There is provided a fuel injection control apparatus for an in-cylinder injection internal combustion engine that limits increases in the amount of discharged PMs and the amount of oil dilution when a demanded amount of injection is changed while divisional injection is being performed. The control apparatus is provided for an internal combustion engine having a fuel injection valve for injecting fuel into a combustion chamber of the internal combustion engine, a fuel pump for feeding fuel to the fuel injection valve by pressuring the fuel, and a fuel storage chamber storing fuel to be supplied to the fuel injection valve. In the engine, divisional injection control including a plurality of fuel injections executed in one cycle is performed. When a demand for making a change in the amount of fuel supplied per cycle occurs, changes in the amount of fuel injection are made according to injection times.

Abstract: In a cylinder injection engine and a control device for the engine, for achieving both of the decrease of a particulate matter by suppression of fuel adhesion on the piston during fast idling of cold start and ignition retard fuel by stratification of a mixed gas around an ignition plug, a closing timing of a suction valve is set to a middle stage of a compression stroke in which a piston moving speed becomes maximum, while the furl adhesion to the piston is decreased by injecting the fuel for stratification onto the ignition plug in the vicinity of a piston bottom dead center, and when the piston is raised in the compression stroke, the mixed gas flows from a combustion chamber to a suction pipe to generate a rising flow, and by this rising flow, the mixed gas is stratified around the ignition plug.

Abstract: In a direct injection gasoline engine, at acceleration operation, an amount of internal EGR is increased by advancing exhaust valve closing timing, and also fuel injection pressure is increased. In this case, range of increase in fuel injection pressure is determined on the basis of the exhaust valve closing timing at present.

Abstract: A display device includes: a display panel (40a) having a plurality of display interconnects (3) provided so as to extend parallel to each other; a drive circuit (44a) provided on a side of one ends of the display interconnects (3), and connected to the display interconnects (3); a first interconnect path (Wa) and a second interconnect path (Wb) that are provided so as to cross the one ends of the display interconnects (3) in an insulating state; and a third interconnect path (Wc) that crosses the other ends of the display interconnects (3) in an insulating state, and is connected to the first interconnect path (Wa) and the second interconnect path (Wb). An amplifier circuit (A) is provided in a path including the first interconnect path (Wa) and the second interconnect path (Wb), and in a path including the first interconnect path (Wa) and the third interconnect path (Wc).

Abstract: A high pressure fuel supply control system for an internal combustion engine includes fuel injectors connected to a common rail, and a high pressure fuel pump for pressure-feeding to the common rail fuel that is supplied from a low-pressure fuel pump. The high pressure fuel pump includes a pressurized chamber, a plunger for pressurizing the fuel in the pressurized chamber, a fuel passage valve provided in the pressurized chamber, and an actuator for operating the fuel passage valve. A drive signal calculation unit calculates a drive signal for driving the actuator to control the discharge quantity of the high pressure fuel pump and the pressure in the common rail. The drive signal calculation unit maintains the discharge quantity of the high pressure fuel pump equal to or larger than a prescribed value.

Abstract: Disclosed herein is a fuel injector for an internal combustion engine, which includes a high pressure pump for pressure feeding high pressure fuel of the internal combustion engine; a fuel rail for accumulating the fuel that has been pressure fed by the high pressure pump; an injection valve for injecting, into a cylinder, the fuel accumulated in the fuel rail; a fuel pressure sensor for detecting the pressure of the fuel that is accumulated in the fuel rail; an electromagnetic relief valve for discharging the pressure accumulated fuel of the fuel rail; and an electronic control unit for controlling opening and closing of the electromagnetic relief valve. The electronic control unit repeats the opening and closing of the relief valve to discharge the fuel pressure in stages so that the fuel pressure in the fuel rail is decreased down to the target fuel pressure.

Abstract: A high pressure fuel pump control system for an internal combustion engine includes a fuel injection valve provided in a fuel common rail and a high pressure fuel pump for feeding fuel by pressure to the fuel injection valve. The high pressure fuel pump includes a pressurized chamber, a plunger for pressurizing fuel in the pressurized chamber, a discharge valve provided in a discharge passage, an intake valve provided in an intake passage, and an actuator for operating the intake valve. The control system includes a means for calculating a drive signal for the actuator to make a discharge amount or pressure of the high pressure fuel pump variable. The means reduces pressure in the common rail by opening the discharge valve to return the fuel in the fuel common rail to the pressurized chamber when a requirement for reducing the pressure in the fuel common rail is made.

Abstract: Disclosed is a fuel injection system that is used with an internal-combustion engine to reliably perform a requested fuel injection operation a requested number of times even when a boost voltage is lowered. The fuel injection system monitors the boost voltage immediately before the start of fuel injection, and varies a valve open time in accordance with the monitored boost voltage. Even when the boost voltage is lowered, the fuel injection system performs a fuel injection operation the requested number of times.

Abstract: A display device includes: a plurality of display interconnects (3) provided so as to extend parallel to each other; a drive circuit (44aa) provided at one ends of the display interconnects (3), and connected to the display interconnects (3); a first interconnect (Wa) provided so as to cross the other ends of the display interconnects (3) in an insulating state; and a second interconnect (Wb) provided so as to cross the one ends of the display interconnects (3) in an insulating state, and so as to be connected to the first interconnect (Wa). When any of the display interconnects (3) is disconnected, a display signal from the drive circuit (44aa) is supplied to the other side of the disconnected display interconnect (3) sequentially through the second interconnect (Wb) and the first interconnect (Wa) in this order via an amplifier circuit (A).