摘要:
An electronic control unit that controls a variable operation angle mechanism that varies an operation angle of an intake valve reduces an operation angle of the intake valve to a normal startup operation angle after first maintaining the operation angle of the intake valve at a high temperature restart operation angle that is larger than the normal startup operation angle for a predetermined period of time after an engine is stopped.
摘要:
An electronic control unit that controls a variable operation angle mechanism that varies an operation angle of an intake valve reduces an operation angle of the intake valve to a normal startup operation angle after first maintaining the operation angle of the intake valve at a high temperature restart operation angle that is larger than the normal startup operation angle for a predetermined period of time after an engine is stopped.
摘要:
In a control apparatus and a control method for a variable mechanism, when a predetermined condition is fulfilled, a movable member (3) is driven until an engagement portion (31) contacts one restriction member (22), and the absolute position of the movable member (3) when it is determined that displacement of the movable member (3) is stopped is learned, as a reference position. When supply of electric power is stopped, the absolute position of the movable member (3) is learned as an initial reference position. When electric power is supplied, the movable member (3) is driven from the initial reference position until the engagement portion (31) contacts the one restriction member (22), and a one-side displacement amount is calculated. If the one-side displacement amount is smaller than a one-side distance, it is determined that a foreign substance is caught in an area on a side of a site corresponding to the one restriction member (22) in a movable range.
摘要:
In a variable valve actuation system capable of changing the angle of action of intake valves by using an actuator whose movement range is between a high end and a low end at which the movement of the actuator is mechanically stopped, it is determined that a fixation is present on condition that the actual amount of movement of the actuator in response to a command A for movement toward the low end that is issued when the present movement position of the actuator is unknown is not more than a prescribed movement criterion value a and that the actual amount of movement in response to a command B output subsequently to the command A in order to cause the actuator to operate in a direction opposite to the direction of the movement in response to the command B is not more than a prescribed movement criterion value b.
摘要:
In a variable valve actuation system capable of changing the angle of action of intake valves by using an actuator whose movement range is between a high end and a low end at which the movement of the actuator is mechanically stopped, it is determined that a fixation is present on condition that the actual amount of movement of the actuator in response to a command A for movement toward the low end that is issued when the present movement position of the actuator is unknown is not more than a prescribed movement criterion value a and that the actual amount of movement in response to a command B output subsequently to the command A in order to cause the actuator to operate in a direction opposite to the direction of the movement in response to the command B is not more than a prescribed movement criterion value b.
摘要:
In a method of producing a cold-rolled steel sheet being excellent in not only the phosphate treatability but also the corrosion resistance after coating under severe corrosion environment such as hot salt water immersion test or composite cycle corrosion test, a continuously annealed steel sheet after cold rolling is pickled with a mixture of nitric acid and hydrochloric acid having a nitric acid concentration of more than 100 g/L but not more than 200 g/L and a ratio R (HCl/HNO3) of hydrochloric acid concentration to nitric acid concentration of 0.01-0.25 to remove Si-containing oxide formed on the steel sheet surface by continuous annealing, and a ratio of covering the surface of the steel sheet with an iron-based oxide formed by the pickling is not more than 85% and preferably a maximum thickness of the iron-based oxide existing on the surface of the steel sheet is not more than 200 nm.
摘要:
An image recording apparatus, including: a recording device; discharge trays; a discharge mechanism; detectors; an input device through which is inputted authentication information relating to image data; and a controller including: an image-data reception portion; an authentication-information confirming portion to make a confirmation as to whether the authentication information contains specific information; a confirmation-necessity judging portion to judge whether the confirmation by the confirming portion with respect to the image data is necessary; a selecting portion to select one discharge tray on which the recording medium is not placed, wherein, where the judging portion judges that the confirmation is necessary, the controller permits selection of the one discharge tray, controls the recording device to record the image based on the image data after the confirmation that the authentication information contains the specific information, and controls the discharge mechanism to discharge, to the selected one discharge tray, the image-recorded recording medium.
摘要:
A group III-V nitride semiconductor substrate includes a first region of group III-V nitride semiconductor crystal grown on a facet on a heterosubstrate, and a second region of the group III-V nitride semiconductor crystal grown on a plane with a predetermined plane orientation on the heterosubstrate. The first region has an area ratio of not more than 10% to the second region in a plane of the substrate. A method for producing a group III-V nitride semiconductor substrate includes a first crystal growth step of supplying a source gas of a group III-V nitride semiconductor onto a heterosubstrate at a first partial pressure to grow the group III-V nitride semiconductor on a plane with a predetermined plane orientation and a facet on the heterosubstrate, and a second crystal growth step of supplying onto the heterosubstrate the source gas at a second partial pressure higher than the first partial pressure to grow the semiconductor on the plane with the predetermined plane orientation and the facet after the first crystal growth step is conduced for a predetermined time period so as to suppress a crystal growth of the semiconductor on the facet.
摘要:
A crystal growth furnace for a compound semiconductor single crystal has: a small diameter section for placing a seed crystal therein; an increasing diameter section that has diameters to increase from the small diameter section to upward; and a constant diameter section that extends from the increasing diameter section to upward. The increasing diameter section has an angle of 120 degrees or more and less than 160 degrees between inner walls opposed to each other.
摘要:
A crystal growth furnace for a compound semiconductor single crystal has: a small diameter section for placing a seed crystal therein; an increasing diameter section that has diameters to increase from the small diameter section to upward; and a constant diameter section that extends from the increasing diameter section to upward. The increasing diameter section has an angle of 120 degrees or more and less than 160 degrees between inner walls opposed to each other.