Abstract: A fuel injection apparatus includes: an adsorbent disposed in an internal space of a leading end portion of a fuel injector, the adsorbent being capable of selectively adsorbing an alcohol component in the blended fuel of gasoline and alcohol; fuel pressure controller capable of achieving states in which a pressure of fuel to be supplied to the fuel injector is set to a low or high pressure range having a small or large adsorbed amount of alcohol on the adsorbent; and split injection controller that makes the fuel injector inject fuel for one cycle in a plurality of times, when the pressure of fuel to be supplied to the fuel injector is set to the high pressure range.

Abstract: A control device applied to a system having an engine configured such that an expansion ratio can be changed is characterized to comprise an expansion ratio acquisition part for acquiring the expansion ratio, and a temperature estimation part for estimating a temperature of an exhaust gas discharged from the engine or a member positioned in a passage for the exhaust gas.

Abstract: The fuel injection apparatus for the internal combustion engine includes: a fuel injector having a leading end portion that has an internal space in which fuel is accumulated and an injection port for injecting fuel; and an adsorbent disposed in the internal space, the adsorbent being capable of selectively adsorbing an alcohol component in a blended fuel of gasoline and alcohol. In this fuel injection apparatus, it is determined whether or not a fuel pressure is higher than a predetermined low fuel pressure when a request is issued for bringing an internal combustion engine to a stop. If it is determined that the fuel pressure is higher than the low fuel pressure, the fuel pressure is kept at the low fuel pressure for a predetermined period of time before the internal combustion engine is brought to a stop.

Abstract: A fuel injection apparatus for an internal combustion engine including a fuel injector having a leading end portion that has an internal space in which fuel is stored and an injection nozzle for injecting fuel; and an adsorbent disposed in the internal space, the adsorbent being capable of selectively adsorbing an alcohol component in a blended fuel of gasoline and alcohol. The adsorbent has a characteristic such that an amount of alcohol adsorption is small when a fuel pressure is low and large when the fuel pressure is high. Adsorption of alcohol onto, and desorption of alcohol from, the adsorbent can be controlled by changing the fuel pressure in the internal space.

Abstract: The fuel injection apparatus includes: a fuel injector having a leading end portion that has an internal space in which fuel is accumulated and an injection port for injecting fuel; and an adsorbent disposed in the internal space, the adsorbent being capable of selectively adsorbing an alcohol component in a blended fuel of gasoline and alcohol. The fuel injection apparatus controls an injection amount from the fuel injector such that an air-fuel ratio of an internal combustion engine is a control target air-fuel ratio based on an alcohol concentration of the blended fuel to be supplied to the fuel injector. In this fuel injection apparatus, a fuel pressure is brought to a predetermined low fuel pressure when a request is issued for desorbing alcohol adsorbed on the adsorbent.

Abstract: The fuel injection apparatus includes: a fuel injector having a leading end that has an internal space in which fuel is accumulated and has a fuel injection port; and an adsorbent, capable of selectively adsorbing an alcohol component in a blended fuel of gasoline and alcohol, disposed in the internal space. The fuel injection apparatus controls an injection amount from the fuel injector such that an air-fuel ratio is a controlled target air-fuel ratio based on an alcohol concentration of a blended fuel supplied to the fuel injector. In this fuel injection apparatus, a fuel pressure is brought to a predetermined high fuel pressure during cold starting of the internal combustion engine. At this time, an adsorbed amount of alcohol on the adsorbent is estimated and any deviation in the air-fuel ratio of the internal combustion engine is corrected based on the adsorbed amount of alcohol.

Abstract: The fuel injection apparatus includes: a fuel injector having a leading end portion that has an internal space in which fuel is accumulated and an injection port for injecting fuel; and an adsorbent disposed in the internal space, the adsorbent being capable of selectively adsorbing an alcohol component in a blended fuel of gasoline and alcohol. The fuel injection apparatus controls an injection amount from the fuel injector such that an air-fuel ratio of an internal combustion engine is a control target air-fuel ratio based on an alcohol concentration of the blended fuel to be supplied to the fuel injector. In this fuel injection apparatus, a fuel pressure is brought to a predetermined low fuel pressure when a request is issued for desorbing alcohol adsorbed on the adsorbent.

Abstract: The fuel injection apparatus for the internal combustion engine includes: a fuel injector having a leading end portion that has an internal space in which fuel is accumulated and an injection port for injecting fuel; and an adsorbent disposed in the internal space, the adsorbent being capable of selectively adsorbing an alcohol component in a blended fuel of gasoline and alcohol. In this fuel injection apparatus, it is determined whether or not a fuel pressure is higher than a predetermined low fuel pressure when a request is issued for bringing an internal combustion engine to a stop. If it is determined that the fuel pressure is higher than the low fuel pressure, the fuel pressure is kept at the low fuel pressure for a predetermined period of time before the internal combustion engine is brought to a stop.

Abstract: A fuel injection apparatus includes: an adsorbent disposed in an internal space of a leading end portion of a fuel injector, the adsorbent being capable of selectively adsorbing an alcohol component in the blended fuel of gasoline and alcohol; fuel pressure controller capable of achieving states in which a pressure of fuel to be supplied to the fuel injector is set to a low or high pressure range having a small or large adsorbed amount of alcohol on the adsorbent; and split injection controller that makes the fuel injector inject fuel for one cycle in a plurality of times, when the pressure of fuel to be supplied to the fuel injector is set to the high pressure range.

Abstract: A fuel injection apparatus for an internal combustion engine including a fuel injector having a leading end portion that has an internal space in which fuel is stored and an injection nozzle for injecting fuel; and an adsorbent disposed in the internal space, the adsorbent being capable of selectively adsorbing an alcohol component in a blended fuel of gasoline and alcohol. The adsorbent has a characteristic such that an amount of alcohol adsorption is small when a fuel pressure is low and large when the fuel pressure is high. Adsorption of alcohol onto, and desorption of alcohol from, the adsorbent can be controlled by changing the fuel pressure in the internal space.

Abstract: A control device which can reduce an exhaust amount of unburned HC at a time of start of an internal combustion engine using a fuel containing alcohol is provided. The control device controls closing timing of an exhaust valve and opening timing of an intake valve so as to close the exhaust valve at a timing at an advance side from an intake top dead center and enlarge a minus overlap until the intake valve is opened after the exhaust valve is closed in accordance with the alcohol concentration of the fuel, for a predetermined time period (hereinafter, a first predetermined time period) at a time of start. The control device controls fuel injection timing so as to start fuel injection in the minus overlap for a second predetermined time period at the time of start which is included in the first predetermined time period.

Abstract: The fuel injection apparatus includes: a fuel injector having a leading end that has an internal space in which fuel is accumulated and has a fuel injection port; and an adsorbent, capable of selectively adsorbing an alcohol component in a blended fuel of gasoline and alcohol, disposed in the internal space. The fuel injection apparatus controls an injection amount from the fuel injector such that an air-fuel ratio is a controlled target air-fuel ratio based on an alcohol concentration of a blended fuel supplied to the fuel injector. In this fuel injection apparatus, a fuel pressure is brought to a predetermined high fuel pressure during cold starting of the internal combustion engine. At this time, an adsorbed amount of alcohol on the adsorbent is estimated and any deviation in the air-fuel ratio of the internal combustion engine is corrected based on the adsorbed amount of alcohol.

Abstract: A control device which can reduce an exhaust amount of unburned HC at a time of start of an internal combustion engine using a fuel containing alcohol is provided. The control device controls closing timing of an exhaust valve and opening timing of an intake valve so as to close the exhaust valve at a timing at an advance side from an intake top dead center and enlarge a minus overlap until the intake valve is opened after the exhaust valve is closed in accordance with the alcohol concentration of the fuel, for a predetermined time period (hereinafter, a first predetermined time period) at a time of start. The control device controls fuel injection timing so as to start fuel injection in the minus overlap for a second predetermined time period at the time of start which is included in the first predetermined time period.

Abstract: A controller for the hybrid system includes: an alcohol concentration detector that detects alcohol concentration of fuel; a demanded coolant temperature setting device that sets a demanded coolant temperature higher as the alcohol concentration increases; an internal combustion engine stopped state determination device that determines whether an internal combustion engine is stopped; an external electric power source connection determination device that determines whether a storage battery is connected to an external electric power source; and a coolant pre-heating device that supplies electric power to a coolant heater until coolant temperature of the coolant reaches the demanded coolant temperature if the internal combustion engine is in the stopped state and the storage battery is connected to the external electric power source.

Abstract: A control device applied to a system having an engine configured such that an expansion ratio can be changed is characterized to comprise an expansion ratio acquisition part for acquiring the expansion ratio, and a temperature estimation part for estimating a temperature of an exhaust gas discharged from the engine or a member positioned in a passage for the exhaust gas.

Abstract: A control device is applied to a multi-cylinder 4-cycle charge compression ignition-type internal combustion engine. The control device operates to open an exhaust valve in an exhaust stroke of each cylinder, operates to close an intake valve before an intake bottom dead center, and then, operates to open the exhaust valve again before the intake bottom dead center. An exhaust flow rate regulating valve is disposed in a collecting portion of an exhaust path and its opening is controlled. Hereby, a period in which the exhaust valve is open in an intake stroke of one cylinder and a period in which the exhaust valve is open in an exhaust stroke of another cylinder partially overlap each other. Combustion gas pushed out of a combustion chamber of the other cylinder in the overlapping period is pushed into a combustion chamber of the one cylinder via the exhaust path.

Abstract: A control device is applied to a multi-cylinder 4-cycle charge compression ignition-type internal combustion engine. The control device operates to open an exhaust valve in an exhaust stroke of each cylinder, operates to close an intake valve before an intake bottom dead center, and then, operates to open the exhaust valve again before the intake bottom dead center. An exhaust flow rate regulating valve is disposed in a collecting portion of an exhaust path and its opening is controlled. Hereby, a period in which the exhaust valve is open in an intake stroke of one cylinder and a period in which the exhaust valve is open in an exhaust stroke of another cylinder partially overlap each other. Combustion gas pushed out of a combustion chamber of the other cylinder in the overlapping period is pushed into a combustion chamber of the one cylinder via the exhaust path.

Abstract: A direct fuel injection-type spark-ignition internal combustion engine is disclosed. The engine comprises a fuel injector for injecting fuel as a spray in nearly the shape of a fan having a relative small thickness, a spark plug and a cavity formed on the top surface of a piston. The cavity has a long and narrow groove-like shape. The spray is injected by the fuel injector such that the spray is almost parallel with the center axis of the piston, and impinges in the cavity. The spark plug is arranged in the upper portion of the cylinder to face the cavity.

Abstract: A direct fuel injection-type spark-ignition internal combustion engine is disclosed. The engine comprises a fuel injector for injecting fuel as a spray in nearly the shape of a fan having a relative small thickness, a spark plug and a cavity formed on the top surface of a piston. The cavity has a long and narrow groove-like shape. The spray is injected by the fuel injector such that the spray is almost parallel with the center axis of the piston, and impinges in the cavity. The spark plug is arranged in the upper portion of the cylinder to face the cavity.