Abstract: A controller for an internal combustion engine includes a regenerative device and at least one of ignition timing circuitry and opening degree circuitry. The ignition timing circuitry is configured to retard an ignition timing so as to decrease a torque generated by the internal combustion engine in a shift-up operation of a multi-stage automatic transmission during a supercharging operation by a supercharger. The opening degree circuitry is configured to reduce an opening degree of a throttle valve so as to decrease a torque generated by the internal combustion engine in a shift-up operation of a multi-stage automatic transmission during a supercharging operation by a supercharger. The regenerative device is coupled to a compressor or a turbine of the supercharger to regenerate rotational energy in the compressor or the turbine so as to decrease the torque in the shift-up operation during the supercharging operation.

Abstract: A direct fuel injection internal combustion engine having an injector for directly injecting fuel into a combustion chamber thereof is provided. The engine is configured so that a tumble flow is generated in the combustion chamber. A fuel injection by the injector can be performed in a first injection mode and a second injection mode, the first injection mode being a mode in which the fuel injection is completed after the tumble flow is generated, and the second injection mode being a mode in which the fuel injection is completed before the tumble flow is generated. The fuel injection of the first injection mode is performed before completion of the warming-up of the engine, and the fuel injection of the second injection mode is performed after completion of the warming-up of the engine.

Abstract: A control system for an internal combustion engine, which is capable of controlling fuel injection valves while causing valve-closing delay time periods, which occur with the valves actually mounted on the engine, to be reflected thereon, thereby making it possible to improve exhaust emission characteristics and fuel economy performance. The ECU of the control system performs initial value-specific control in fuel injection control and ignition timing control, such that initial value acquisition conditions are satisfied, so as to calculate the initial values of the valve-closing delay time periods when the initial value acquisition conditions are satisfied. When normal-time control is performed, the valve-opening time periods of the valves are calculated using the initial values of the valve-opening time periods, and the valves are controlled to be open over the valve-opening time periods.

Abstract: A control device for an internal combustion engine including a supercharger and a waste gate valve, the supercharger including a compressor an electric motor, and a turbine, the turbine being provided in an exhaust passage of the internal combustion engine, the waste gate valve being provided in a bypass passage that bypasses the turbine, the control device includes circuitry. The circuitry is configured to drive the electric motor in a high-load operation state in which the load of the internal combustion engine is determined to be equal to or larger than a first reference load and the temperature of the exhaust gas is determined to be expected to be higher than a reference temperature. The circuitry is configured to increase an opening degree of the waste gate valve in the high-load operation state.

Abstract: An internal combustion engine control device to control a fuel injection valve includes: valve-close delay time acquisition circuitry configured to acquire a valve-close delay time of the fuel injection valve; first learning value calculation circuitry configured to calculate a first learning value based on the valve-close delay time when a running state of an internal combustion engine satisfies a predetermined learning condition; valve-open time calculation circuitry configured to calculate a valve-open time of the fuel injection valve based on the first learning value; second learning value calculation circuitry configured to calculate a second learning value based on the valve-close delay time irrespective of the running state of the internal combustion engine; and learning state determination circuitry configured to determine a learning state of the first learning value based on a relationship between the first learning value and second learning value.

Abstract: An internal combustion engine control device to control a fuel injection valve includes: valve-close delay time acquisition circuitry configured to acquire a valve-close delay time of the fuel injection valve; first learning value calculation circuitry configured to calculate a first learning value based on the valve-close delay time when a running state of an internal combustion engine satisfies a predetermined learning condition; valve-open time calculation circuitry configured to calculate a valve-open time of the fuel injection valve based on the first learning value; second learning value calculation circuitry configured to calculate a second learning value based on the valve-close delay time irrespective of the running state of the internal combustion engine; and learning state determination circuitry configured to determine a learning state of the first learning value based on a relationship between the first learning value and second learning value.

Abstract: A control system for an internal combustion engine, which is capable of controlling fuel injection valves while causing valve-closing delay time periods, which occur with the valves actually mounted on the engine, to be reflected thereon, thereby making it possible to improve exhaust emission characteristics and fuel economy performance. The ECU of the control system performs initial value-specific control in fuel injection control and ignition timing control, such that initial value acquisition conditions are satisfied, so as to calculate the initial values of the valve-closing delay time periods when the initial value acquisition conditions are satisfied. When normal-time control is performed, the valve-opening time periods of the valves are calculated using the initial values of the valve-opening time periods, and the valves are controlled to be open over the valve-opening time periods.

Abstract: A control device of a vehicle capable of improving acceleration responsiveness and suppressing increase in the NOx emission amount when a required torque is increased during a steady lean operation. A target air-fuel ratio (AFCMD) is set according to an accelerator pedal operation of a driver. When the driver depresses an accelerator pedal to make an acceleration request during the lean operation, in which the AFCMD is set to a predetermined lean air-fuel ratio (AFLN), air-fuel ratio reduction control is executed to reduce the AFCMD according to the acceleration request. In the air-fuel ratio reduction control, when the AFCMD calculated according to a required torque (TRQCMD) is smaller than a limit air-fuel ratio (AFLMT), the AFCMD is set to the AFLMT, and the AFLMT is set to a value smaller than the AFLN set in a steady state of the lean operation and larger than a theoretical air-fuel ratio (AFST).

Abstract: A fuel injection device for an internal combustion engine including a cylinder, includes a fuel injection valve and a processor. The fuel injection valve injects fuel directly into the cylinder. The fuel injection valve has an injection hole which has a diameter and a length in an axial direction of the injection hole. A ratio of the length to the diameter being 1.0 or smaller. The processor is configured to determine, in a cold operation of the internal combustion engine, a fuel injection time during which the fuel injection valve continues to inject fuel such that an amount of soot in exhaust gas is less than an amount of soot in exhaust gas if the fuel injection valve has the ratio larger than 1.0.

Abstract: A direct fuel injection internal combustion engine having an injector for directly injecting fuel into a combustion chamber thereof is provided. The engine is configured so that a tumble flow is generated in the combustion chamber. A fuel injection by the injector can be performed in a first injection mode and a second injection mode, the first injection mode being a mode in which the fuel injection is completed after the tumble flow is generated, and the second injection mode being a mode in which the fuel injection is completed before the tumble flow is generated. The fuel injection of the first injection mode is performed before completion of the warming-up of the engine, and the fuel injection of the second injection mode is performed after completion of the warming-up of the engine.

Abstract: A controller for an internal combustion engine includes a regenerative device and at least one of ignition timing circuitry and opening degree circuitry. The ignition timing circuitry is configured to retard an ignition timing so as to decrease a torque generated by the internal combustion engine in a shift-up operation of a multi-stage automatic transmission during a supercharging operation by a supercharger. The opening degree circuitry is configured to reduce an opening degree of a throttle valve so as to decrease a torque generated by the internal combustion engine in a shift-up operation of a multi-stage automatic transmission during a supercharging operation by a supercharger. The regenerative device is coupled to a compressor or a turbine of the supercharger to regenerate rotational energy in the compressor or the turbine so as to decrease the torque in the shift-up operation during the supercharging operation.

Abstract: A control device for an internal combustion engine including a supercharger and a waste gate valve, the supercharger including a compressor an electric motor, and a turbine, the turbine being provided in an exhaust passage of the internal combustion engine, the waste gate valve being provided in a bypass passage that bypasses the turbine, the control device includes circuitry. The circuitry is configured to drive the electric motor in a high-load operation state in which the load of the internal combustion engine is determined to be equal to or larger than a first reference load and the temperature of the exhaust gas is determined to be expected to be higher than a reference temperature. The circuitry is configured to increase an opening degree of the waste gate valve in the high-load operation state.

Abstract: A fuel supply system for an internal combustion engine capable of executing calculation of an energization time of the electromagnetic valve at proper timing and thereby properly controlling the amount of fuel to be discharged from the fuel pump toward a fuel injection valve. In the fuel supply system, when a predetermined timing corresponding to a predetermined crank angle position of the engine deviates from a predetermined cam angle timing which is within a predetermined time period including a timing at which a top of a cam nose of the driving cam is abutting a plunger, and preceding and following the timing, and corresponds to a predetermined rotational angle position of the driving cam, the calculation timing of the energization time is corrected such that the calculation timing is made closer to the cam angle timing.

Abstract: A control system for an internal combustion engine for driving a vehicle, which controls an output torque of the engine, is provided. In this control system, a rapid change in a demand torque of the engine is detected, and a feedforward correction amount is generated during a correction period which is substantially equal to a resonance period of a powertrain of the vehicle, from a time when the rapid change in the demand torque is detected. An output torque control amount of the engine is corrected with the feedforward correction amount. A torque change amount integrated value is calculated by integrating an amount of change in the demand torque, and the feedforward correction amount is generated according to the torque change amount integrated value.

Abstract: A control system for an internal combustion engine for driving a vehicle, which controls an output torque of the engine, is provided. In this control system, a rapid change in a demand torque of the engine is detected, and a feedforward correction amount is generated during a correction period which is substantially equal to a resonance period of a powertrain of the vehicle, from a time when the rapid change in the demand torque is detected. An output torque control amount of the engine is corrected with the feedforward correction amount. A torque change amount integrated value is calculated by integrating an amount of change in the demand torque, and the feedforward correction amount is generated according to the torque change amount integrated value.