Abstract: A combustion system is applied to an engine. The combustion system includes an injection device that injects a fuel into a combustion chamber, a spark plug that ignites fuel in the combustion chamber, and a control device that controls the injection device and the spark plug. The control device includes a first control unit that executes predetermined first control. In the first control, control is performed such that, a total injection amount corresponding to all the fuel injected by the injection device in one combustion cycle of the engine is injected within a first period corresponding to a period from valve close timing which brings an intake valve into a closed state until a first half of a compression stroke of the engine ends.

Abstract: A normal control unit performs a normal control to cause an injection apparatus to perform predetermined normal injection and subsequently cause an ignition plug to perform ignition. In a delay region in a combustion chamber, propagation of flame is retarded further than in another region when the normal control is performed. In a knock state, self-ignition occurs in the delay region when the normal control is performed. When the knock state is established, an adjustment control unit performs, to suppress the self-ignition, an adjustment control to perform main injection and subsequently perform sub-injection in a second half of a compression stroke to adjust a fuel distribution in the combustion chamber to facilitate propagation of flame to the delay region further than in the normal control and subsequently cause the ignition plug to perform the ignition.

Abstract: A combustion system is applied to an engine. The combustion system includes an injection device that injects a fuel into a combustion chamber, a spark plug that ignites fuel in the combustion chamber, and a control device that controls the injection device and the spark plug. The control device includes a first control unit that executes predetermined first control. In the first control, control is performed such that, a total injection amount corresponding to all the fuel injected by the injection device in one combustion cycle of the engine is injected within a first period corresponding to a period from valve close timing which brings an intake valve into a closed state until a first half of a compression stroke of the engine ends.

Abstract: A normal control unit performs a normal control to cause an injection apparatus to perform predetermined normal injection and subsequently cause an ignition plug to perform ignition. In a delay region in a combustion chamber, propagation of flame is retarded further than in another region when the normal control is performed. In a knock state, self-ignition occurs in the delay region when the normal control is performed. When the knock state is established, an adjustment control unit performs, to suppress the self-ignition, an adjustment control to perform main injection and subsequently perform sub-injection in a second half of a compression stroke to adjust a fuel distribution in the combustion chamber to facilitate propagation of flame to the delay region further than in the normal control and subsequently cause the ignition plug to perform the ignition.

Abstract: A timing computation unit determines whether to execute compression latter-half injection to inject fuel in a latter half of a compression stroke of an internal combustion engine based on an operation state of the engine and computes an injection timing and an ignition timing of fuel. A timing correction unit corrects the computed injection timing to an advance side and corrects the computed ignition timing to a retard side, in a case where a detected fuel pressure is lower than a target fuel pressure. The timing correction unit corrects the computed injection timing to the retard side and corrects the computed ignition timing to the advance side, in a case where the detected fuel pressure is higher than the target fuel pressure. A combustion control unit controls a fuel injection device and an ignition device based on the injection timing and the ignition timing.

Abstract: A robot includes a base, a first arm that is provided to be rotatable with respect to the base, and a gear device that transmits a driving force from the base to the first arm. The gear device has a flexible gear. The flexible gear has a cylindrical body portion and a bottom portion that is connected to one end portion of the body portion. The bottom portion has a metal flow radially extending from a center side to an outer peripheral side of the bottom portion.

Abstract: A timing computation unit determines whether to execute compression latter-half injection to inject fuel in a latter half of a compression stroke of an internal combustion engine based on an operation state of the engine and computes an injection timing and an ignition timing of fuel. A timing correction unit corrects the computed injection timing to an advance side and corrects the computed ignition timing to a retard side, in a case where a detected fuel pressure is lower than a target fuel pressure. The timing correction unit corrects the computed injection timing to the retard side and corrects the computed ignition timing to the advance side, in a case where the detected fuel pressure is higher than the target fuel pressure. A combustion control unit controls a fuel injection device and an ignition device based on the injection timing and the ignition timing.

Abstract: A fuel reformer for producing a steam reforming reaction between fuel and water on a reforming catalyst includes a fuel injection part that injects and supplies fuel into the reforming catalyst, and an injection control part that controls an injection amount of fuel by the fuel injection part. The injection control part controls the injection amount in order that a temperature of the reforming catalyst is not lower than a preset given temperature. The fuel reformer further includes a temperature obtaining part that measures or estimates the temperature of the reforming catalyst, and a target value calculation part that calculates a target value of the injection amount, such that the temperature of the reforming catalyst after fuel is injected by the fuel injection part is equal to or higher than the given temperature. The fuel injection part is controlled such that the injection amount coincides with the target value.

Abstract: A fuel reformer for producing a steam reforming reaction between fuel and water on a reforming catalyst includes a fuel injection part that injects and supplies fuel into the reforming catalyst, a temperature measurement part that measures a temperature of the reforming catalyst, and a determination part that determines whether a process for recovering the reforming catalyst is necessary. The determination by the determination part is made based on a temperature change of the reforming catalyst when the steam reforming reaction is produced.

Abstract: A robot includes a base, a first arm that is provided to be rotatable with respect to the base, and a gear device that transmits a driving force from the base to the first arm. The gear device has a flexible gear. The flexible gear has a cylindrical body portion and a bottom portion that is connected to one end portion of the body portion. The bottom portion has a metal flow radially extending from a center side to an outer peripheral side of the bottom portion.

Abstract: An electric compressor includes a motor, a scroll compression mechanism, a housing, a circuit unit, a circuit housing housing the circuit unit and integrated with the housing. The electric compressor includes a heat sink provided on a circuit unit side of a partition wall so as to project to be brought into contact with a semiconductor element of a power substrate, facing the partition wall that erects along a vertical direction to separate the inside of the housing from the circuit housing. The heat sink has a lower surface and an upper surface formed into a cylindrical shape so that width of an upper end portion and a lower end portion of the heat sink gradually decreases to reach a tip portion.

Abstract: An engine, including a crankcase, a cylinder body extending upward from the crankcase, a cylinder head coupled to an upper portion of the cylinder body, a cylinder head cover coupled to an upper portion of the cylinder head, and a gasket disposed between the cylinder head and the cylinder head cover. The gasket includes a projection that projects along directions from an inner wall of the cylinder head and from the cylinder head cover toward a camshaft. The projection is located in a cam chain chamber, which is formed in the engine along the cylinder body, the cylinder head and the cylinder head cover, and a cam chamber formed in the engine along the cylinder head and the cylinder head cover. The projection has an oil supply portion disposed in the cam chain chamber and above a cam chain guide guiding a cam chain.

Abstract: An electric compressor includes a motor, a scroll compression mechanism, a housing, a circuit unit, a circuit housing housing the circuit unit and integrated with the housing. The electric compressor includes a heat sink provided on a circuit unit side of a partition wall so as to project to be brought into contact with a semiconductor element of a power substrate, facing the partition wall that erects along a vertical direction to separate the inside of the housing from the circuit housing. The heat sink has a lower surface and an upper surface formed into a cylindrical shape so that width of an upper end portion and a lower end portion of the heat sink gradually decreases to reach a tip portion.

Abstract: An engine, including a crankcase, a cylinder body extending upward from the crankcase, a cylinder head coupled to an upper portion of the cylinder body, a cylinder head cover coupled to an upper portion of the cylinder head, and a gasket disposed between the cylinder head and the cylinder head cover. The gasket includes a projection that projects along directions from an inner wall of the cylinder head and from the cylinder head cover toward a camshaft. The projection is located in a cam chain chamber, which is formed in the engine along the cylinder body, the cylinder head and the cylinder head cover, and a cam chamber formed in the engine along the cylinder head and the cylinder head cover. The projection has an oil supply portion disposed in the cam chain chamber and above a cam chain guide guiding a cam chain.

Abstract: A print device including a transport roller for transporting a recording medium in which a pair of end surfaces of a metallic plate faces each other so as to be molded in a cylindrical shape, wherein at least one end surface of the pair of end surfaces includes a first portion which comes into plane contact with the other end surface of the pair of end surfaces at an outer periphery surface side of the transport roller, and a second portion which has a gap between the second portion and the other end surface at an inner periphery surface side thereof.

Abstract: A bus container, its assembling method and a gas-insulated switchgear, in which gas treating working in a factory and at a site is reduced, an operation is made simple, and a process is shortened. In the case of connection of a container (101) and a container (102), a conductor (103) of spherical shape is kept in contact with and fixed to a contact (102f), the container (101) is caused to approach to the container (102), the conductor (103) is joined to a contact (101f).