Abstract: According to one embodiment, a memory device includes a stacked structure including a plurality of conductive layers stacked to be apart from each other in a first direction, and a pillar structure including a resistance change portion extending in the first direction in the stacked structure, and a semiconductor portion which extends in the first direction in the stacked structure and which includes a first portion provided along the resistance change portion and a second portion extending from the first portion in at least one direction intersecting the first direction.

Abstract: A control apparatus of an electric water pump of the present invention is configured by an engine control unit on a side of an engine and an electric water pump in a cooling water circulating circuit of the engine. The engine control unit transmits signals of a measured water temperature and a target water temperature of the engine, and the electric water pump includes a drive control unit for executing control of adjusting a flow rate of the water pump on the basis of the signals of the measured water temperature and the target water temperature.

Abstract: An SOHC-type engine in which first and second insertion/removal guide sections for guiding the insertion and removal of first and second spark plugs, respectively, are provided on a cylinder head including an intake valve and the first spark plug disposed therein and arranged along an axis of a camshaft, and an exhaust valve and the second spark plug disposed therein and arranged along the axis of the camshaft.

Abstract: An SOHC-type engine in which first and second insertion/removal guide sections for guiding the insertion and removal of first and second spark plugs, respectively, are provided on a cylinder head including an intake valve and the first spark plug disposed therein and arranged along an axis of a camshaft, and an exhaust valve and the second spark plug disposed therein and arranged along the axis of the camshaft.

Abstract: In a cylinder head of an engine having an intake port communicating with an combustion chamber of the engine, a mount structure for an engine accessory includes an engine accessory, an accessory mount portion provided on the cylinder head and to which the engine accessory is mounted, and a fuel injection device mount portion provided on the cylinder head and to which a fuel injection device for injecting fuel into the intake port is mounted. The accessory mount portion is joined to the fuel injection device mount portion.

Abstract: In an internal combustion engine with cylinders and a crankshaft, coolant discharged from a coolant circulating pump is supplied to a coolant jacket formed in a cylinder block via a coolant jacket formed in a cylinder head. An inlet port through which the coolant discharged from the coolant circulating pump flows into the coolant jacket is provided at one end portion of the cylinder head on an intake side thereof in a cylinder-head center line direction, whereas an outlet port through which the coolant in the coolant jacket is allowed to flow out into a heater core is provided at the other end portion of the cylinder head on an exhaust side thereof.

Abstract: Deflecting ribs are provided within a coolant jacket formed in a cylinder head in such a manner as to protrude upwardly from bottom walls for directing the flow of coolant toward exhaust-valve-port side port wall portions The deflecting ribs for deflecting part of the flow of coolant toward the exhaust-valve-port side port wall portions are formed in such a manner as to extend from the intake-valve-port side port wall portions, and gaps are left between the exhaust-valve-port side port wall portions and the deflecting ribs for allowing the coolant to flow along the wall surfaces of the exhaust-valve-port side port wall portions, whereby there is generated no stagnation of the coolant on the wall surfaces of the exhaust-valve-port side port wall portions at the portions where the gaps are formed.

Abstract: Disclosed is a process for the production of maleic anhydride, which comprises: reacting a hydrocarbon with an oxygen-containing gas in the presence of a catalyst; recovering maleic anhydride from the reaction gas; recovering unreacted hydrocarbon from the remaining gas; and returning the hydrocarbon thus recovered to the reactor for re-use, wherein said reaction is effected under the conditions such that the hydrocarbon concentration X (vol %) and oxygen concentration Y (vol) in all the gases to be fed into the reactor, the hydrocarbon conversion Z (t) in the reactor and the oxygen concentration W (vol %) in all the effluent gases from the reactor satisfy the following relationships: Y≧20, X+Y≦70, 1≦Y/X≦5, and 20(Y−10)/X≦Z≦25Y/X or 2≦W≦10.

Abstract: In multi-cylinder engine in which an intake valve and a first spark plug arranged side by side along an axis of a camshaft and an exhaust valve and a second spark plug arranged side by side along the axis of the camshaft are disposed in a cylinder head for every combustion chamber, the position of a central portion of an upstream end of an intake port provided in the cylinder head with the intake valve interposed between the intake port and each of the combustion chambers and the position of a central portion of a downstream end of an exhaust port provided in the cylinder head with the exhaust valve interposed between the exhaust port and each of the combustion chambers are set to correspond with each other in the direction along the axis of the camshaft. Thus, the length of the cylinder head is reduced.

Abstract: The object of the present invention is to facilitate an appropriate oil supply to the tensioner without a complex apparatus. A valve chamber 3A is formed in a cylinder head 3 which is connected to a cylinder block 2. An opening 23—for discharging the oil in the valve chamber 3A into a chain case 6 which is placed on the side of the cylinder block 2—is formed on a chain case mounting surface 20. Inside the chain case 6 on the chain case mounting surface 20 of the cylinder block 2 are placed a timing chain 15 and a tensioner 30 for applying tension to the timing chain 15. An oil dropping rib 24 for guiding the oil discharged through the opening 23 to the tensioner 30 is provided on the chain case mounting surface 20.

Abstract: A multi-cylinder internal combustion engine includes an intake manifold having branch pipes connected to one side of a cylinder head and curved to allow the intake manifold to extend to directly above a cylinder-head cover, and intake-side spark plugs and fuel injectors which are incorporated in the cylinder head. The spark plugs are disposed outside a valve train chamber on a side of the valve train chamber where curved portions of the branch pipes are disposed, and the fuel injectors and ignition coils provided above the spark plugs are disposed between the valve train chamber and the curved portions in a direction normal to axes of the cylinders as viewed from a direction in which cylinders are arranged. The ignition coils are disposed so as not to overlap the branch pipes as viewed from a direction in which the ignition coils are attached to the cylinder head.

Abstract: In multi-cylinder engine in which an intake valve and a first spark plug arranged side by side along an axis of a camshaft and an exhaust valve and a second spark plug arranged side by side along the axis of the camshaft are disposed in a cylinder head for every combustion chamber, the position of a central portion of an upstream end of an intake port provided in the cylinder head with the intake valve interposed between the intake port and each of the combustion chambers and the position of a central portion of a downstream end of an exhaust port provided in the cylinder head with the exhaust valve interposed between the exhaust port and each of the combustion chambers are set to correspond with each other in the direction along the axis of the camshaft. Thus, it is possible to provide a reduction in size of the cylinder head in a direction along the axis of the camshaft.

Abstract: The object of the present invention is to facilitate an appropriate oil supply to the tensioner without a complex apparatus. A valve chamber 3A is formed in a cylinder head 3 which is connected to a cylinder block 2. An opening 23—for discharging the oil in the valve chamber 3A into a chain case 6 which is placed on the side of the cylinder block 2—is formed on a chain case mounting surface 20. Inside the chain case 6 on the chain case mounting surface 20 of the cylinder block 2 are placed a timing chain 15 and a tensioner 30 for applying tension to the timing chain 15. An oil dropping rib 24 for guiding the oil discharged through the opening 23 to the tensioner 30 is provided on the chain case mounting surface 20.

Abstract: In an internal combustion engine with cylinders and a crankshaft, coolant discharged from a coolant circulating pump is supplied to a coolant jacket formed in a cylinder block via a coolant jacket formed in a cylinder head. An inlet port through which the coolant discharged from the coolant circulating pump flows into the coolant jacket is provided at one end portion of the cylinder head on an intake side thereof in a cylinder-head center line direction, whereas an outlet port through which the coolant in the coolant jacket is allowed to flow out into a heater core is provided at the other end portion of the cylinder head on an exhaust side thereof.

Abstract: Deflecting ribs are provided within a coolant jacket formed in a cylinder head in such a manner as to protrude upwardly from bottom walls for directing the flow of coolant toward exhaust-valve-port side port wall portions The deflecting ribs for deflecting part of the flow of coolant toward the exhaust-valve-port side port wall portions are formed in such a manner as to extend from the intake-valve-port side port wall portions, and gaps are left between the exhaust-valve-port side port wall portions and the deflecting ribs for allowing the coolant to flow along the wall surfaces of the exhaust-valve-port side port wall portions, whereby there is generated no stagnation of the coolant on the wall surfaces of the exhaust-valve-port side port wall portions at the portions where the gaps are formed.

Abstract: A multi-cylinder internal combustion engine includes an intake manifold having branch pipes connected to one side of a cylinder head and curved to allow the intake manifold to extend to directly above a cylinder-head cover, and intake-side spark plugs and fuel injectors which are incorporated in the cylinder head. The spark plugs are disposed outside a valve train chamber on a side of the valve train chamber where curved portions of the branch pipes are disposed, and the fuel injectors and ignition coils provided above the spark plugs are disposed between the valve train chamber and the curved portions in a direction normal to axes of the cylinders as viewed from a direction in which cylinders are arranged. The ignition coils are disposed so as not to overlap the branch pipes as viewed from a direction in which the ignition coils are attached to the cylinder head.

Abstract: An engine cylinder head in which a water jacket and an EGR passage are formed therein, the EGR passage opening into an exhaust passage at one end and opening into a side of an intake side at the other end thereof, the engine cylinder being characterized in that the EGR passage is provided outwardly in a cylinder arrangement direction of head bolt pass-through holes formed in one end of the engine cylinder head in the cylinder arrangement direction. Thus, because the EGR passage can be made much longer, the cooling capacity for re-circulating gas can be improved. Moreover, because the EGR passage can be provided without head bolts being spaced apart from the combustion chamber, the surface pressure around combustion chambers in the cylinder head relative to a cylinder block can be prevented from being lowered.

Abstract: Disclosed is a process for the preparation of maleic anhydride which comprises subjecting an aliphatic hydrocarbon having four or more carbon atoms to gas phase oxidation reaction in the presence of a catalyst, wherein supposing that the function of reaction product gas composition is FL and the function of temperature and pressure of reaction product gas is FR, the safety index F satisfies the following relationship (1): F=FL−FR>0  (1) According to the present invention, it is possible that the loss of unreacted hydrocarbon and maleic anhydride as reaction product due to non-catalytic oxidation reaction is prevented while effecting the reaction in a stable manner, whereby the yield of maleic anhydride can be kept maximum while assuring safety.

Abstract: There is provided an engine cylinder head in which a water jacket and an EGR passage are formed therein, the EGR passage opening into an exhaust passage at one end and opening into a side of an intake side at the other end thereof, the engine cylinder being characterized in that the EGR passage is provided outwardly in a cylinder arrangement direction of head bolt pass-through holes formed in one end of the engine cylinder head in the cylinder arrangement direction. Thus, since the EGR passage can be made much longer, the cooling capacity for re-circulating gas can be improved. Moreover since the EGR passage can be provided without head bolts being spaced apart from the combustion chamber, the surface pressure around combustion chambers in the cylinder head relative to a cylinder block can be prevented from being lowered.

Abstract: Disclosed is a process for the production of maleic anhydride, which comprises: reacting a hydrocarbon with an oxygen-containing gas in the presence of a catalyst; recovering maleic anhydride from the reaction gas; recovering unreacted hydrocarbon from the remaining gas; and returning the hydrocarbon thus recovered to the reactor for re-use, wherein said reaction is effected under the conditions such that the hydrocarbon concentration X (vol %) and oxygen concentration Y (vol) in all the gases to be fed into the reactor, the hydrocarbon conversion Z (t) in the reactor and the oxygen concentration W (vol %) in all the effluent gases from the reactor satisfy the following relationships: