Abstract: A control system of an internal combustion engine includes an electronic control unit. The electronic control unit is configured to: (i) obtain a detection value of a fuel pressure sensor at fixed sampling time intervals; (ii) calculate a center fuel pressure value of a pulsation of the fuel pressure, based on at least a first latest fuel pressure value and a second latest fuel pressure value as detection values of the fuel pressure sensor, (iii) calculate an amplitude of the pulsation of the fuel pressure, based on at least the second latest fuel pressure value and the first latest fuel pressure value; (iv) calculate an initial phase of the pulsation of the fuel pressure, based on at least one of the second latest fuel pressure value and the first latest fuel pressure value, and (v) predict a fuel pressure value corresponding to the crank angle, based on a predetermined formula.

Abstract: A control device for an internal combustion engine is equipped with an electronic control unit. The electronic control unit is configured to: i) calculate amplitudes of respective waves, respectively, originating from a plurality of factors that causes fuel pressure pulsation within a low-pressure fuel passage, vibration frequencies of the respective waves within a crank angle range of 360 degrees, initial phases of the respective waves, and central fuel pressure values of the respective waves; and ii) predict a fuel pressure value at an arbitrary crank angle according to a model formula showing a synthesized wave obtained by synthesizing the respective waves, on a basis of the amplitudes, the vibration frequencies, the initial phases, and the central fuel pressure values of the respective waves calculated.

Abstract: A control system of an internal combustion engine includes a port injection valve and an electronic control unit. The electronic control unit is configured to: (i) obtain one of a start crank angle and an end crank angle, (ii) calculate the other of the start crank angle and the end crank angle, based on an equation for calculating a provisional injection amount of the case where the port injection valve provisionally injects the fuel with the one of the start crank angle and the end crank angle and a given crank angle range; (iii) convert a crank angle range from the start crank angle to the end crank angle, into a target energization period; and (iv) perform fuel injection by energizing the port injection valve for the target energization period.

Abstract: A control system of an internal combustion engine includes a port injection valve and an electronic control unit. The electronic control unit is configured to: (i) obtain one of a start crank angle and an end crank angle, (ii) calculate the other of the start crank angle and the end crank angle, based on an equation for calculating a provisional injection amount of the case where the port injection valve provisionally injects the fuel with the one of the start crank angle and the end crank angle and a given crank angle range; (iii) convert a crank angle range from the start crank angle to the end crank angle, into a target energization period; and (iv) perform fuel injection by energizing the port injection valve for the target energization period.

Abstract: A control device for an internal combustion engine is equipped with an electronic control unit. The electronic control unit is configured to: i) calculate amplitudes of respective waves, respectively, originating from a plurality of factors that causes fuel pressure pulsation within a low-pressure fuel passage, vibration frequencies of the respective waves within a crank angle range of 360 degrees, initial phases of the respective waves, and central fuel pressure values of the respective waves; and ii) predict a fuel pressure value at an arbitrary crank angle according to a model formula showing a synthesized wave obtained by synthesizing the respective waves, on a basis of the amplitudes, the vibration frequencies, the initial phases, and the central fuel pressure values of the respective waves calculated.

Abstract: A control system of an internal combustion engine includes an electronic control unit. The electronic control unit is configured to: (i) obtain a detection value of a fuel pressure sensor at fixed sampling time intervals; (ii) calculate a center fuel pressure value of a pulsation of the fuel pressure, based on at least a first latest fuel pressure value and a second latest fuel pressure value as detection values of the fuel pressure sensor, (iii) calculate an amplitude of the pulsation of the fuel pressure, based on at least the second latest fuel pressure value and the first latest fuel pressure value; (iv) calculate an initial phase of the pulsation of the fuel pressure, based on at least one of the second latest fuel pressure value and the first latest fuel pressure value, and (v) predict a fuel pressure value corresponding to the crank angle, based on a predetermined formula.

Abstract: A semiconductor device, includes: an organic multilayer wiring substrate having an inner conductive layer; a semiconductor element mounted and connected on one surface of the wiring substrate; and a plurality of solder balls disposed on the other surface in a grid array. A defect portion is formed at an area corresponding to a corner solder ball disposed at an outer peripheral corner, or at an area corresponding to the corner solder ball and peripheral solder balls at the inner conductive layer. Temperature rises of the solder balls disposed in a vicinity of the corner are suppressed, and therefore, the semiconductor device of which fatigue life is prolonged and superior in reliability can be obtained.

Abstract: A semiconductor device, includes: an organic multilayer wiring substrate having an inner conductive layer; a semiconductor element mounted and connected on one surface of the wiring substrate; and a plurality of solder balls disposed on the other surface in a grid array. A defect portion is formed at an area corresponding to a corner solder ball disposed at an outer peripheral corner, or at an area corresponding to the corner solder ball and peripheral solder balls at the inner conductive layer. Temperature rises of the solder balls disposed in a vicinity of the corner are suppressed, and therefore, the semiconductor device of which fatigue life is prolonged and superior in reliability can be obtained.

Abstract: The present invention is an electronic component series, comprising a carrier tape which has a plurality of storage recesses cyclically arranged along the longitudinal direction, electronic components to be stored in the plurality of storage recesses, a cover tape established to cover the plurality of storage recesses of the carrier tape, and a pair of adhesive regions which adhere to the carrier tape and to the cover tape, and extend along the longitudinal direction of the carrier tape so as to enclose the plurality of storage recesses from both sides, wherein the adhesive width of the pair of adhesive regions is cyclically increased in size corresponding to the storage recesses respectively. With this electronic component series, the difference in the peel strength of the cover tape between the first adhesive regions and the second adhesive regions can be sufficiently reduced.

Abstract: The present invention is an electronic component series, comprising a carrier tape which has a plurality of storage recesses cyclically arranged along the longitudinal direction, electronic components to be stored in the plurality of storage recesses, a cover tape established to cover the plurality of storage recesses of the carrier tape, and a pair of adhesive regions which adhere to the carrier tape and to the cover tape, and extend along the longitudinal direction of the carrier tape so as to enclose the plurality of storage recesses from both sides, wherein the adhesive width of the pair of adhesive regions is cyclically increased in size corresponding to the storage recesses respectively. With this electronic component series, the difference in the peel strength of the cover tape between the first adhesive regions and the second adhesive regions can be sufficiently reduced.