摘要:
A method for manufacturing a cylindrical structure having an axial direction includes: winding a fabric around a mandrel in a circumferential direction that is perpendicular to the axial direction, the fabric containing first fibers oriented in a first direction intersecting the circumferential direction; winding a roving into a helical shape around the mandrel, the roving containing second fibers oriented in a longitudinal direction of the roving; and joining the fabric and the roving together by using a resin.
摘要:
A gas turbine engine blade for aircraft which has a 3-dimensional blade surface shape twisted around a center line at an angle of 45 degrees or more and 70 degrees or less, wherein the aforementioned blade is provided with multiple composite material prepregs which contain reinforced fiber and which are integrally molded after being laminated in the thickness direction, and the aforementioned reinforced fiber runs continuously without interruption within each layer of the aforementioned composite material prepregs.
摘要:
There is provided a photovoltaic device in which at least one pin-junction is formed in a thin film semiconductor deposited on a substrate, the substrate including: a base including polycrystalline silicon; and a polycrystalline silicon layer formed on the base by liquid phase growth, in which at least a part of a surface of the polycrystalline silicon layer has unevenness composed of facet surfaces. The photovoltaic device prevents a reduction in photoelectric conversion efficiency due to the absence of preferable unevenness, an increase in cost due to the use of an expensive material, and a reduction in throughput in the photovoltaic device, and has a preferable characteristic and high productivity.
摘要:
An injection timing for supplying a fuel by one injection per two rotations to a single-cylinder four-cycle engine of a fixed spark advance ignition system is decided on the basis of a simple system. With respect to ignition signals A1, B1, A2, B2, . . . generated every one rotation of the engine, an intake pipe pressure lowering state exists in one ignition signal cycle A1-B2, and the intake pipe pressure lowering state does not exist in the next ignition signal cycle B2-A2. The signal B1 corresponds to a terminal phase of an exhaust stroke and the signal A2 corresponds to a terminal phase of a compression stroke if these two conditions are established, and an injection timing is decided on the basis of the determination in such a manner that the fuel injection burnt by the ignition of A2 is executed at one time during two rotations.
摘要:
In a fuel injection control method of an engine, an electronic control unit calculates a pressure integrated value for one combustion cycle by detecting a combustion cycle and continuously detecting a suction air pipe pressure and determines that the engine is under an accelerated state such that a pressure difference determined by comparing the pressure integrated value with the pressure integrated value at the preceding combustion cycle becomes equal to or more than a predetermined acceleration determining reference value, thereby increasing a fuel amount. The electronic control unit determines that the engine is under the accelerated state at a particular time when the difference between the pressure integrated value and the atmospheric pressure becomes equal to or less than a reference value and a pressure difference integrated value obtained by integrating each of the pressure differences within an integrating period becomes equal to or more than another reference value.
摘要:
The invention provides a fuel injection control apparatus of an engine in which a temperature sensor for detecting an engine temperature is inexpensive and a wiring to a control unit is made unnecessary, thereby restricting a system cost low. A control unit (5) is integrally formed with a throttle chamber (3) corresponding to a peripheral device of an engine (1), a temperature sensor (6) detecting an engine temperature is directly attached to a substrate (5b) of the control unit (5), and the temperature sensor (6) estimates an actual engine temperature on the basis of an engine peripheral temperature detected by the temperature sensor (6) by using a correlation data obtained by previously searching a correlation between the engine peripheral temperature detected by the temperature sensor (6) and the actual engine temperature under the same condition, thereby calculating a fuel increase amount and time for the increase amount necessary from a low temperature start to a warm-up finish.
摘要:
The invention provides a fuel supply control method and apparatus in which an air fuel ratio does not become rich even if an acceleration and deceleration operation is repeated for a short time in the case that a time lag with respect to a response from a detection of an acceleration state to a fuel amount increase is large, and troubles such as a black smoke generation from an exhaust pipe, an engine stop and the like are not generated. In a fuel supply control method of an internal combustion chamber for increasing an amount of a fuel for acceleration so as to inject from an injection apparatus, at a time of detecting a transient state at an accelerating time or the like on the basis of data such as an opening degree of a throttle valve and/or an air suction pressure, the method inhibits the fuel amount increase for acceleration on the basis of the detection of the transient state, if a total amount of an injection fuel per a unit time is more than a fixed value.
摘要:
The present invention relates to a method and apparatus for partial etching or pattern etching using an electrolysis reaction, wherein, conventionally, there was the problem that an etching line could not be finely formed on a cell edge because of apparatus problems concerning alignment accuracy. The present invention provides a method and apparatus with which fine line etching is possible and which can form a line on a cell edge. Provided is a an electrolytic etching method of a substrate which is formed having a subject etching layer on a surface, having the steps of providing a fixed gap from a substrate end surface which is external to an end surface of the substrate for placing a working part of a working electrode and passing current between the substrate and the working electrode.