The fuel injection control device and fuel injection control method according to the present invention allow a fuel injection device to perform fuel injection in the case where an open period of the intake valve and an open period of the exhaust valve overlap with each other, and sets the timing to start injection to the closing timing of the exhaust valve, and that sets the timing to end injection to the timing at which a deceleration rate of intake air speed becomes the local maximum. As such, the homogeneity of in-cylinder air-fuel mixture can be improved while preventing the adhesion of fuel to the inner wall of the intake port and the blow-through of fuel to the exhaust passage from occurring.

A position sensor of the present invention includes: a magnet that moves together with a moving body; a magnetic sensor that detects a magnetic flux generated by the magnet; and a detector that detects an anomaly of the magnetic sensor based on a detection value detected by the magnetic sensor. The magnetic sensor is set so as to detect the detection value taking a value on a locus preset in accordance with a position of the moving body, and the locus is set so that a change rate of the detection value corresponding to change of the position of the moving body differs for each of a plurality of sections set within a movement range of the moving body. The detector detects the anomaly of the magnetic sensor based on a relation between the detection value and a comparison value that is a value corresponding to the locus.

In a compression-ignition engine having a two-stage cavity, the distribution ratio between fuel for an upper cavity and fuel for a lower cavity is maintained even when the operational state of the engine changes. A piston of the compression-ignition engine includes a lower cavity, an upper cavity, and a lip portion between the lower cavity and the upper cavity. A controller causes a main injection and at least one pilot injection to be executed when the engine operates in a first state and a second state in which the load is higher than the load in the first state. The fuel spray is distributed to the lower cavity and the upper cavity. The controller causes a ratio of injection amount per pilot injection to the total injection amount to be higher when the engine operates in the second state than when the engine operates in the first state.

A vehicle control data generation method includes causing processing circuitry to execute an obtaining process that obtains a state of a vehicle and a specifying variable, an operating process that operates an electronic device, a reward calculating process that provides a greater reward when a characteristic of the vehicle meets a standard than when the characteristic does not meet the standard, and an updating process that updates relationship defining data. The update map outputs the updated relationship defining data. The reward calculating process includes a changing process that changes the reward, provided when the characteristic of the vehicle is a predetermined characteristic, such that the reward in a case where torque generated by an internal combustion engine is used to generate the propelling force of the vehicle differs from the reward in a case where the torque is not used to generate the propelling force.

A control device for the internal combustion engine is provided with a carbon dioxide concentration control part configured to cause a concentration of carbon dioxide in exhaust flowing into the filter to decrease when the temperature of the filter becomes a predetermined first temperature setting or more and less than a predetermined second temperature setting. The first temperature setting is made a temperature selected from a temperature band at which ash deposited on the filter can be made to be separate from the filter when the inside of the filter is in an atmosphere where the concentration of carbon dioxide is lower than when it is in an exhaust atmosphere. The second temperature setting is made a temperature set so as to prevent excessive temperature rise of the catalyst device.

An engine controller, an engine control method, and a memory medium are provided. A second calculation process calculates an intake air amount without using a detected value of the intake air flow rate. A guard process sets a difference amount learning value as a learning reflected value when the difference amount learning value is less than or equal to an upper limit guard value and greater than or equal to a lower limit guard value. A calculation method switching process sets a sum of a second intake air amount and the learning reflected value as a calculated value of the intake air amount when it is determined that an intake air pulsation is great.

Provided is an electronically controlled throttle device for an engine driving to open and close a throttle valve (8) of a valve body (3) to which rotation of a motor (15) is transmitted from a driven gear (14) via a throttle shaft (6), and disposing a substrate (22) on which an excitation conductor (23) and a signal detection conductor (24) are arranged to face an exciting conductor (21) rotating together with the throttle shaft (6). The driven gear (14) comprises an embedded core metal (25), and has one side surface to which an exciting conductor (21) is exposed, the core metal (25) and the exciting conductor (21) being insert-Molded of a synthetic resin material and prepared, and a caulked portion (6a) of the throttle shaft (6) is inserted and fixed into a shaft hole (25a) extending through the core metal (25).

In an intake air flow rate calculation process, a pulsation correction coefficient calculation process is executed to calculate a pulsation correction coefficient, which is used to compensate for an output error of the air flow meter resulting from an intake air pulsation, based on an engine rotation speed, a throttle opening degree, and an atmospheric pressure, and the intake air flow rate is calculated by correcting the intake air flow rate with the pulsation correction coefficient.

Systems and methods for operating an engine that includes an oxygen sensor and one or more fuel injectors for each engine cylinder are described. In one example, lines describing a relationship between a fuel mass multiplier and a coefficient of a function describing output of an oxygen sensor to a step change in fuel mass are a basis for determining air-fuel imbalance of engine cylinders.

A supercharging control device of an internal combustion engine includes: a supercharger, disposed in the internal combustion engine, and configured to increase a supercharging pressure by changing a variable nozzle opening degree to a closed side; a supercharging pressure obtaining part, obtaining the supercharging pressure; a limit value setting part, setting a limit value which setting the opening degree of the closed side of the variable nozzle based on a pressure of a side of a turbine of the supercharger; and an opening degree setting part, setting the opening degree of the variable nozzle to the limit value when the supercharging pressure is increased toward a target supercharging pressure, and then gradually setting to an open side.