Abstract: The present invention provides a boron-containing silica dispersion having better dispersion stability at a high concentration, and higher binding properties between boron and silica than conventional dispersions. The present invention is a boron-containing silica dispersion containing amorphous silica particles containing boron atoms and a dispersion medium; the boron-containing amorphous silica particles having an average particle size of 10 to 100 nm, as determined from 40 particles selected at random in a transmission electron micrograph; the boron-containing silica dispersion having a solids content of 5 to 30 mass %; and the boron-containing silica dispersion having a sedimentation rate of the particles of 4% or less, when the boron-containing silica dispersion is left standing for 1000 hours, and proportions of SiO2 and B2O3 of 90.0 to 99.8 mass % and 0.2 to 10.

Abstract: Provided is a boron-containing amorphous silica powder more excellent in terms of low temperature sinterability than conventional silica powders. The present invention relates to amorphous silica powder containing boron atoms, the boron-containing amorphous silica powder having an average particle size of 10 to 100 nm, as determined from 40 particles selected at random in a transmission electron micrograph, the boron-containing amorphous silica powder having a decrement in a boron content of 10 mass % or less, when fired under the following conditions: <Firing conditions> 5 to 10 g of a dried product of the boron-containing amorphous silica powder is filled into an alumina crucible, heated in the atmosphere at 200° C./hour to 1000° C. to 1100° C., maintained as it is for 5 hours, and cooled to room temperature.

Abstract: When an amount of a backward tumble flow is smaller than an amount of a forward tumble flow, the intake-side valve recess is used as a first valve recess and the exhaust-side valve recess is used as a second valve recess. When the amount of the backward tumble flow is larger than the amount of the forward tumble flow, the exhaust-side valve recess is used as a first valve recess and the intake-side valve recess is used as a second valve recess. An inclination angle of the first valve recess is larger than an inclination angle of the second valve recess when comparing the inclination angle such that a height of the recess decreases gradually toward an inner side of a cross-section.

Abstract: When an amount of a backward tumble flow is smaller than an amount of a forward tumble flow, the intake-side valve recess is used as a first valve recess and the exhaust-side valve recess is used as a second valve recess. When the amount of the backward tumble flow is larger than the amount of the forward tumble flow, the exhaust-side valve recess is used as a first valve recess and the intake-side valve recess is used as a second valve recess. An inclination angle of the first valve recess is larger than an inclination angle of the second valve recess when comparing the inclination angle such that a height of the recess decreases gradually toward an inner side of a cross-section.

Abstract: An internal combustion engine includes an intake port configured to generate a swirl in a cylinder, an exhaust port, and a piston. The piston includes a top surface provided in an upper portion of the piston, a cavity provided from the top surface toward a lower portion of the piston around a central axis of the piston, and a connection surface connecting an inner edge of the top surface and an upper end of a side surface of the cavity to each other. The connection surface is provided to be closer to a lower portion side of the piston than the top surface. An area of the connection surface projected on a plane parallel to the top surface is larger on an intake port side than on an exhaust port side.

Abstract: An object of the present invention is to provide magnesium oxide particles that have a high heat conductivity and excellent properties as heat-dissipating filler, and can prevent problems such as soft errors in the memory. The magnesium oxide particles have a BET specific surface area of 0.1 to 17 m2/g, and an ? dose of 0.005 c/cm2·Hr or lower, the particles exhibiting a relation between an X-ray diffraction peak intensity y (cps) at a Bragg angle (2?) of 42.80° to 43.00° and the BET specific surface area x (m2/g) as represented by the following inequality (1): y??960x+33000??(1).

Abstract: An object of the present invention is to provide magnesium oxide particles that have a high heat conductivity and excellent properties as heat-dissipating filler, and can prevent problems such as soft errors in the memory. The magnesium oxide particles have a BET specific surface area of 0.1 to 17 m2/g, and an ? dose of 0.005 c/cm2·Hr or lower, the particles exhibiting a relation between an X-ray diffraction peak intensity y (cps) at a Bragg angle (2?) of 42.80° to 43.00° and the BET specific surface area x (m2/g) as represented by the following inequality (1): y??960x+33000??(1).

Abstract: A stirling engine 10A includes: cylinders 22 and 32; pistons 21 and 31, gas lubrication being performed between the corresponding cylinders 22 and 32 and the pistons 21 and 31; a crankcase 62 that is provided with a crankshaft 61 converting a reciprocating movement of the pistons 21 and 31 into a rotational movement; and a cooler 45 that cools a working fluid performing expansion work, wherein a start timing is adjusted based on an internal humidity of the crankcase 62.

Abstract: An output controller for a stirling engine is provided in a cooling system that causes common cooling water to flow through both the stirling engine and an internal combustion engine serving as a motive power source other than the stirling engine. The output controller for the stirling engine includes a temperature adjustment portion that adjusts a temperature of the cooling water supplied to the stirling engine. Specifically, the temperature adjustment portion includes a temperature adjustment valve capable of adjusting the temperature of the cooling water supplied to the stirling engine by switchably setting at least one of partial cooling paths and into a communication state.

Abstract: An ECU is used for a Stirling engine that is provided with a starter that drives an output shaft of the Stirling engine. The ECU includes a control portion that commences an engine-starting drive of the starter within a phase interval, during which the torque of the Stirling engine that varies according to phase of the output shaft is relatively small. The phase interval is an interval during which the torque of the Stirling engine is less than or equal to the torque obtained when the compression begins. The phase at which the driving of the starter is commenced is set to the phase at which the torque of the Stirling engine becomes smaller than the torque obtained when the compression begins.

Abstract: A cooling system 1A includes an internal combustion engine 10, a pump 31, a radiator 32, a main passage section 41, a stirling engine 20, a branch passage section 43 branching from the main passage section 41 at a first connection point P1 and joining a downstream part of the main passage section 41 from the first connection point P1 at a second connection point P2, and a thermostat 33. The first connection point P1 and the second connection point P2 are provided in a part of the main passage section 41 between the radiator 32 and the pump 31. The thermostat 33 is provided in another part of the main passage section 41 between the first connection point P1 and the second connection point P2.

Abstract: A stirling engine 10A includes: cylinders 22 and 32; pistons 21 and 31, gas lubrication being performed between the corresponding cylinders 22 and 32 and the pistons 21 and 31; a crankcase 62 that is provided with a crankshaft 61 converting a reciprocating movement of the pistons 21 and 31 into a rotational movement; and a cooler 45 that cools a working fluid performing expansion work, wherein a start timing is adjusted based on an internal humidity of the crankcase 62.

Abstract: An output controller for a stirling engine is provided in a cooling system that causes common cooling water to flow through both the stirling engine and an internal combustion engine serving as a motive power source other than the stirling engine. The output controller for the stirling engine includes a temperature adjustment portion that adjusts a temperature of the cooling water supplied to the stirling engine. Specifically, the temperature adjustment portion includes a temperature adjustment valve capable of adjusting the temperature of the cooling water supplied to the stirling engine by switchably setting at least one of partial cooling paths and into a communication state.

Abstract: A cooling system 1A includes an internal combustion engine 10, a pump 31, a radiator 32, a main passage section 41, a stirling engine 20, a branch passage section 43 branching from the main passage section 41 at a first connection point P1 and joining a downstream part of the main passage section 41 from the first connection point P1 at a second connection point P2, and a thermostat 33. The first connection point P1 and the second connection point P2 are provided in a part of the main passage section 41 between the radiator 32 and the pump 31. The thermostat 33 is provided in another part of the main passage section 41 between the first connection point P1 and the second connection point P2.

Abstract: Zinc sulfide phosphor that has high energy efficiency and color purity and that emits blue light is provided. Specifically, a zinc sulfide phosphor adapted for use as a light source or in a display by being applied to powder EL elements is provided. The zinc sulfide blue phosphor comprises copper, silver or both elements and nickel, iron or both elements. The phosphor is obtained by adding a compound comprising copper, silver or both elements, a zinc compound, a sulfidizing agent and a compound comprising nickel, iron or both elements as an aqueous solution to an organic solvent to form a reaction mixture, heating the mixture and removing water from the reaction mixture by azeotropic dehydration of water and the organic solvent to obtain a zinc sulfide phosphor precursor, further sintering the zinc sulfide phosphor precursor.

Abstract: An ECU is used for a Stirling engine that is provided with a starter that drives an output shaft of the Stirling engine. The ECU includes a control portion that commences an engine-starting drive of the starter within a phase interval, during which the torque of the Stirling engine that varies according to phase of the output shaft is relatively small. The phase interval is an interval during which the torque of the Stirling engine is less than or equal to the torque obtained when the compression begins. The phase at which the driving of the starter is commenced is set to the phase at which the torque of the Stirling engine becomes smaller than the torque obtained when the compression begins.

Abstract: There is provided an automatic transmission comprising a first shaft capable of receiving torque from an engine, and four planetary gear sets arranged coaxially on the first shaft and in series in an axial direction of the first shaft. Each of the four planetary gear sets has a single sun gear and a single ring gear. Further, the automatic transmission comprises an output wheel arranged coaxially on the first shaft, and capable of outputting torque transmitted from the engine through some of the four planetary gear sets. The output wheel is arranged between two of the four planetary gear sets. Accordingly, the noise or vibration from the planetary gear sets in the automatic transmission may be reduced, while the overall length of the first shaft may be made shorter, and the overall size of the automatic transmission may be made smaller.

Abstract: In an automatic transmission (AT) in which an input shaft (Input) and an output gear (Output) are disposed on the same axis and three clutches (C1-C3) and two brakes (B1, B2) are selectively operated to provide six forward speeds, first and second planetary gear sets (GS1, GS2) are configured to consistently reduce the speed of input rotation and output the speed-reduced rotation, thereby enabling downsizing of them. The first and second planetary gear sets (GS1, GS2) are arranged in a transmission case at both the axial ends thereof. Third and fourth planetary gear sets (GS3, GS4) are connected to each other to have four rotation elements in combination, thereby constituting a Simpson planetary gear train. One of the four rotation elements (a fourth carrier (PC4) in an illustrated example) is connected to the output gear (Output).

Abstract: In an automatic transmission (AT) in which an input shaft (Input) and an output gear (Output) are disposed on the same axis and three clutches (C1-C3) and two brakes (B1, B2) are selectively operated to provide six forward speeds, first and second planetary gear sets (GS1, GS2) are configured to consistently reduce the speed of input rotation and output the speed-reduced rotation, thereby enabling downsizing of them. The first and second planetary gear sets (GS1, GS2) are arranged in a transmission case at both the axial ends thereof. Third and fourth planetary gear sets (GS3, GS4) are connected to each other to have four rotation elements in combination, thereby constituting a Simpson planetary gear train. One of the four rotation elements (a fourth carrier (PC4) in an illustrated example) is connected to the output gear (Output).

Abstract: A wiper 1 for a machine tool which has two covers includes: a main body having an attachment part 4 to attach the wiper to a fixing cover and a tongue part 5 extended from the attachment part 4 in a tilted direction with respect to a sliding surface of the fixing cover L; and a metal plate 3 mounted on the tongue part 5, wherein the tongue part 5 is located along a substantially entire face of the metal plate 3 which faces to the sliding surface of the cover L, and a thin wall part 5a of a tip end of the tongue part 5 and a tip end of the metal plate 3 are brought into contact with the sliding surface of the cover L to cover a gap between the sliding surface of the cover L and the other cover.