摘要:
Each cylinder bank of a V-type engine is provided with a plurality of cylinders which are not in sequence in firing order. A collecting intake passage is connected to each of the cylinders of both banks by way of independent intake passages which pass between the two banks and have the same effective channel length, and each of the independent intake passages is arranged so that it extends substantially perpendicularly and upwardly from a cylinder. Both collecting intake passages are arranged above one of the cylinder banks, and the collecting intake passage which is connected to a cylinder of the other cylinder bank is arranged on the independent intake passages connected to the other collecting intake passage. By doing so, overlapping of both collecting intake passages can be avoided and thus the height of the intake system can be reduced. The independent intake passages and the collecting intake passage which overlaps the former have a common wall. In one embodiment, each of the collecting intake passages is formed integrally with a high speed intake passage and a low speed intake passage. The vertical positions of the high speed intake passages for each bank are varied. The high speed rear side intake passage is connected to the underside of the low speed rear side intake passage. The low speed and high speed front side intake passages are connected to each other by way of a common side wall.
摘要:
In a V-type engine, the cylinders in one of the cylinder banks are connected to a first communicating passage and the cylinders in the other cylinder bank are connected to a second communicating passage. The cylinders in each cylinder bank do not fire one after another. First and second intake air supply passages are connected to the first and second communicating passages at positions near one end of the communicating passages and extend toward the respective other ends of the communicating passages just above the communicating passages.
摘要:
A cylinder head construction for a combustion engine, which comprises a wall structure defining a cylinder head lower surface adapted to contact a mating surface of a cylinder block, and having an inwardly recessed wall defining a combustion chamber, an exhaust port defining wall open at one end at said inwardly recessed wall and at the opposite end in a cylinder head side wall, and adapted to be selectively opened and closed by two separate exhaust valves, wherein a pair of exhaust ports, one for each exhaust valve, are defined at least adjacent the exhaust valves, respectively, a coolant passage defined between the wall structure and the exhaust port defining wall, and a wall member extending between the exhaust port defining wall and the wall structure for deflecting a coolant in the coolant passage so as to flow into a space between the exhaust ports.
摘要:
A head cover arrangement for a double overhead cam type engine, including a head cover for covering two cam shafts provided, in parallel with each other, on a cylinder head and a boundary member for bounding a hollow defined, between the cam shafts, by the head cover and the cylinder head so as to form a chamber for accommodating a plurality of spark plugs and a plurality of high-tension cords connected to the spark plugs, respectively. The boundary member includes an upper member for constituting a top wall of the chamber and a side member for constituting a side wall of the chamber and the side member is formed with a plurality of recesses for securing the high-tension cords, respectively such that the high-tension cords are drawn out of the chamber through the recesses, respectively.
摘要:
An intake system for an internal combustion engine comprises an intake manifold and a surge tank member connected together to form a plurality of long bowed first discrete intake passages each leading to one of the cylinders and a volume chamber disposed on the upstream ends of the first discrete intake passages. The intake manifold is further provided with a plurality of second discrete intake passages each of which branches off from one of the first discrete intake passages to extend on the inner side of the same and is shorter than the first discrete intake passages, and with a communicating passage for interconnecting the second discrete intake passages. A valve is provided in each second discrete intake passage to open and close the second discrete intake passage according to the operating condition of the engine. A part of the wall defining the communicating passage is formed by a plate member sandwiched between the intake manifold and the surge tank member.
摘要:
A vertical cavity surface emitting laser includes a first semiconductor multilayer reflector, a resonator, and a second semiconductor multilayer reflector. The first semiconductor multilayer reflector is formed on a substrate and is configured by stacking a high refractive index layer having a relatively high refractive index and a low refractive index layer having a relatively low refractive index. The resonator includes an active layer formed on the first semiconductor multilayer reflector. The second semiconductor multilayer reflector is configured by stacking the high refractive index layer and the low refractive index layer. The resonator includes a pair of spacer layers disposed vertically on the active layer and a resonator extension area formed at one side of the pair of spacer layers. The resonator extension area contains a material in which an energy level with a crystal defect is higher than a general energy level without the crystal defect.
摘要:
A fixing device includes a transport member that transports a recording medium in a first direction, the recording medium having on one side thereof an image formed of an image forming material that is to be fixed by absorbing light; a first chip that has a first light-emitting area in which a plurality of light-emitting elements that emit light toward the one side of the recording medium are arranged two-dimensionally; and a second chip that has a second light-emitting area in which a plurality of light-emitting elements that emit light toward the one side of the recording medium are arranged two-dimensionally. A gap between the first light-emitting area and the second light-emitting area extends at an angle with respect to the first direction, and a portion of the first light-emitting area and a portion of the second light-emitting area overlap each other in the first direction.
摘要:
A vertical cavity surface emitting laser that includes: a substrate; a first reflector of a first conductive type formed on the substrate; an active region formed on the first reflector; a second reflector of a second conductive type formed on the active region; and a current confining layer formed between the first reflector and the second reflector; and a metallic electrode that is formed on the second reflector, and is electrically connected to the second reflector. A conductive region with an anisotropy where a length in a longitudinal direction is different from a length in a short direction is formed in the current confining layer, and an opening defining a beam aperture is formed in the metallic electrode, and a diameter of the opening in the longitudinal direction is smaller than the length of the conductive region in the longitudinal direction.
摘要:
A clutch control device includes: a plurality of hydraulic clutches built into a transmission; a clutch switching pattern storage device in which a plurality of clutch switching patterns, each defining engage/release changeover timing with which the plurality of hydraulic clutches are engaged/released are stored in correspondence to individual speed change patterns adopted by the transmission; a clutch switching pattern selection device that selects a clutch switching pattern stored in the clutch switching pattern storage device in correspondence to a speed change pattern for the transmission at a time of speed change; and a hydraulic control device that executes hydraulic control for the plurality of hydraulic clutches in correspondence to the clutch switching pattern selected by the clutch switching pattern selection device.
摘要:
A vertical cavity surface emitting laser that includes: a substrate; a first semiconductor multilayer reflector; an active region; a second semiconductor multilayer reflector; a columnar structure formed on the substrate; a current narrowing layer that is formed inside of the columnar structure, and has a conductive region surrounded by an oxidization region selectively oxidized; a first electrode that is formed at a top of the columnar structure, and defines a beam window; a first insulating film that covers the beam window; and a second insulating film of which a second refractive index is larger than the first refractive index. A reflection ratio in a second region where the second insulating film is formed is lower than a reflection ratio in a first region where only the first insulating film is formed.