Abstract: A fuel injection control apparatus including a microprocessor. The microprocessor is configured to perform calculating a target injection time, determining a first crank angle defining a start of fuel injection and a second crank angle defining an end of fuel injection, controlling a fuel injector in a first injection mode in which the fuel is injected for the first target injection time from a first time point corresponding to the first crank angle or a second injection mode in which the fuel is injected for the second target injection time from a second time point corresponding to a target crank angle, and the controlling including controlling the fuel injector so as to inject the fuel in an intake stroke in the first injection mode, while inject the fuel in a compression stroke in the second injection mode.

Abstract: An internal combustion engine control apparatus is configured to control an internal combustion engine including a piston reciprocating in a cylinder and a fuel injector arranged to inject a fuel into a combustion chamber facing the piston in the cylinder. The internal combustion engine control apparatus includes an electronic control unit having a microprocessor and a memory. The microprocessor is configured to perform controlling the fuel injector so as to inject the fuel in an injectable area from a first crank angle at which an intake stroke is started to a second crank angle at which a compression stroke is ended, and setting an injection frequency of the fuel injected by the fuel injector in the injectable area. The microprocessor is configured to perform the setting including setting the injection frequency between once and four times.

Abstract: An internal combustion engine control apparatus including a microprocessor. The microprocessor is configured to perform determining whether a start of the internal combustion engine is complete, determining whether a warm-up of an exhaust catalyst device is needed, acquiring an information on a temperature inside a cylinder, switching an injection mode, and controlling the fuel injector to inject the fuel in accordance with the injection mode, the switching including switching the injection mode to the first injection mode when the start of the internal combustion engine is complete and the warm-up of the exhaust catalyst device is needed, and switching the injection mode to the second injection mode or the third injection mode in accordance with the information on the temperature when the start of the internal combustion engine is complete and the warm-up of the exhaust catalyst device is not needed.

Abstract: An internal combustion engine control apparatus including a microprocessor. The microprocessor is configured to perform determining whether a warm-up of an exhaust catalyst device disposed on an exhaust passage of an internal combustion engine is complete; acquiring an information on a temperature inside a cylinder of the internal combustion engine; switching an injection mode to a first injection mode or a second injection mode in accordance with an information on a temperature inside the cylinder when it is determined that a warm-up of the exhaust catalyst device is complete; and controlling a fuel injector so as to inject the fuel in accordance with an injection mode.

Abstract: A fuel injection control apparatus including a microprocessor. The microprocessor is configured to perform calculating a target injection time, determining a first crank angle defining a start of fuel injection and a second crank angle defining an end of fuel injection, controlling a fuel injector in a first injection mode in which the fuel is injected for the first target injection time from a first time point corresponding to the first crank angle or a second injection mode in which the fuel is injected for the second target injection time from a second time point corresponding to a target crank angle, and the controlling including controlling the fuel injector so as to inject the fuel in the first injection mode first and in the second injection mode last when the fuel is injected multiple times between an intake stroke and a compression stroke.

Abstract: An internal combustion engine control apparatus including an electronic control unit having a microprocessor and a memory. The microprocessor is configured to perform switching an injection mode between a first injection mode in which the fuel is injected in a range including an intake stroke and a compression stroke of an internal combustion engine and a second injection mode in which the fuel is injected in the range so that an injection frequency in the compression stroke in the second injection mode is greater than an injection frequency in the compression stroke in the first injection mode; and determining whether the injection mode needs to be switched based on an ignition timing of the ignitor.

Abstract: A temperature acquisition apparatus for an internal combustion engine is configured to acquire a temperature of a combustion chamber of the internal combustion engine. The apparatus includes: an electronic control unit having a processor and a memory coupled to the processor. The processor is configured to perform: acquiring an intake air amount of the internal combustion engine; calculating a cumulative intake air amount based on the intake air amount; and acquiring a temperature of the internal combustion engine based on the cumulative intake air amount.

Abstract: A fuel injection control apparatus including a microprocessor. The microprocessor is configured to perform calculating injection target values per a combustion cycle, controlling a fuel injector so as to inject fuel in accordance with the injection target values, instructing a switching between a first mode injecting the fuel and a second mode stopping the fuel injection, determining whether it is possible to inject the fuel in accordance with the injection target values when the switching from the second mode to the first mode is instructed, and modifying the injection target values by reducing a target injection frequency when it is determined to be impossible to inject the fuel in accordance with the injection target values, and the controlling including controlling the fuel injector, when the injection target values are modified, so as to inject the fuel in accordance with modified injection target values.

Abstract: A liquid discharging apparatus includes a first head, a second head, a third head, and a fourth head. The first head has a first part and a second part. The second part is coupled to the first part in a first direction. The second part has a width in a first direction that is shorter than a width of the first part in a second direction. A third part coupled to the first part has a width shorter than the width of the first part in the second direction and is at a position different from the second part in the second direction. The second head includes fourth, fifth, and sixth parts that are arranged similarly to the first, second, and third parts. Parts of the first, second, third, and fourth heads are positioned, respectfully, in the second part, the third part, the fifth part, and the sixth part.

Abstract: a part of a first head is positioned in the second part, a part of a second head is positioned in the third part, a part of a third head is positioned in the fifth part, a part of a fourth head is positioned in the sixth part, and a first color is cyan and a third color is magenta.

Abstract: A liquid discharge method of discharging a liquid from a nozzle of a liquid discharge head by applying a drive pulse to a drive element of the liquid discharge head includes an acquisition step of acquiring a recording condition including a first discharge characteristic and a second discharge characteristic of the liquid from the liquid discharge head, a determination step of determining the drive pulse to be applied to the drive element, based on the recording condition, and a driving step of applying the drive pulse determined in the determination step to the drive element. In the liquid discharge method, in the determination step, the drive pulse is determined by a determination method subjected to weighting in which a weight of the first discharge characteristic is greater than a weight of the second discharge characteristic.

Abstract: A liquid discharge method of discharging a liquid from a nozzle of a liquid discharge head by applying a drive pulse to a drive element of the liquid discharge head includes an acquisition step of acquiring a recording condition, and a driving step of applying the drive pulse to the drive element. The drive pulse includes a first potential, a second potential different from the first potential, and a third potential different from the first potential and the second potential. The second potential is to be applied after the first potential, and the third potential is to be applied after the second potential. In the liquid discharge method, in the driving step, the drive pulse in which a time of the second potential varies depending on the recording condition acquired in the acquisition step is applied to the drive element.

Abstract: A liquid discharge method of discharging a liquid from a nozzle of a liquid discharge head by applying a drive pulse to a drive element of the liquid discharge head includes an acquisition step of acquiring a discharge characteristic of the liquid from the liquid discharge head, as a recording condition, and a driving step of applying the drive pulse to the drive element. The recording condition includes any of an angle of a discharge direction of the liquid discharged from the nozzle with respect to a reference direction, a drive frequency of the drive element, and an aspect ratio of distribution of the liquid discharged from the nozzle. In the liquid discharge method, in the driving step, the drive pulse that varies depending on the recording condition acquired in the acquisition step is applied to the drive element.

Abstract: In the present liquid discharge method, in the driving step, the drive pulse in which a potential change rate during a change from the third potential to the first potential varies depending on the recording condition acquired in the acquisition step is applied to the drive element.

Abstract: A liquid discharge method of discharging a liquid from a nozzle of a liquid discharge head by applying a drive pulse to a drive element of the liquid discharge head includes an acquisition step of acquiring a state of a dot formed on a recording medium by the liquid discharged from the nozzle, as a recording condition, and a driving step of applying the drive pulse that varies depending on the recording condition acquired in the acquisition step, to the drive element. The drive pulse may include a first potential, a second potential different from the first potential, and a third potential different from the first potential and the second potential. The second potential may be to be applied after the first potential, and the third potential may be to be applied after the second potential.

Abstract: A liquid discharge method of discharging a liquid from a nozzle of a liquid discharge head by applying a drive pulse to a drive element of the liquid discharge head includes an acquisition step of acquiring a recording condition, and a driving step of applying the drive pulse to the drive element. The drive pulse includes a first potential, a second potential different from the first potential, and a third potential different from the first potential and the second potential. The second potential is to be applied after the first potential, and the third potential is to be applied after the second potential. In the liquid discharge method, in the driving step, the drive pulse in which a time of the third potential varies depending on the recording condition acquired in the acquisition step is applied to the drive element.

Abstract: A liquid discharge method of discharging a liquid from a nozzle of a liquid discharge head by applying a drive pulse to a drive element of the liquid discharge head includes an acquisition step of acquiring a recording condition, and a driving step of applying the drive pulse to the drive element. The drive pulse includes a first potential, a second potential different from the first potential, and a third potential different from the first potential and the second potential. The second potential is to be applied after the first potential, and the third potential is to be applied after the second potential. In the present liquid discharge method, in the driving step, the drive pulse in which a potential change rate during a change from the second potential to the third potential varies depending on the recording condition acquired in the acquisition step is applied to the drive element.

Abstract: A liquid discharge method of discharging a liquid from a nozzle of a liquid discharge head by applying a drive pulse to a drive element of the liquid discharge head includes an acquisition step of acquiring a recording condition, and a driving step of applying the drive pulse to the drive element. The drive pulse includes a first potential, a second potential different from the first potential, and a third potential different from the first potential and the second potential. The second potential is to be applied after the first potential, and the third potential is to be applied after the second potential. In the liquid discharge method, in the driving step, the drive pulse having the first potential that varies depending on the recording condition acquired in the acquisition step is applied to the drive element.

Abstract: A liquid discharge method of discharging a liquid from a nozzle of a liquid discharge head by applying a drive pulse to a drive element of the liquid discharge head includes an acquisition step of acquiring a recording condition, and a driving step of applying the drive pulse to the drive element. The drive pulse includes a first potential, a second potential different from the first potential, and a third potential different from the first potential and the second potential. The second potential is to be applied after the first potential, and the third potential is to be applied after the second potential. In the present liquid discharge method, in the driving step, the drive pulse in which a potential change rate during a change from the first potential to the second potential varies depending on the recording condition acquired in the acquisition step is applied to the drive element.

Abstract: The present invention provides a heterocyclic compound represented by the general formula (1): The compound of the present invention has a wide treatment spectrum for mental disorders including central nervous system disorders, no side effects and high safety.