An internal combustion engine comprises an engine body, a filter provided in an exhaust passage of the engine body and trapping particulate matter in the exhaust, and a temperature sensor detecting a temperature of gas flowing cut from the filter. A control device controlling this internal combustion engine comprises a fuel cut control pan configured to perform fuel cut control stopping a supply of fuel to a combustion chamber of the engine body and a forced ending part configured to forcibly make the fuel cut control end even if a condition for performance of fuel cut control had stood based on a trend in change of temperature of the gas temperature detected by the temperature sensor.

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.

A method for operating a vehicle that may be automatically stopped and started is described. In one example, the method includes inhibiting automatic engine stopping in response to a temperature of an emissions device exceeding a threshold temperature. In addition, additional actions may be taken to reduce the temperature of the emissions device when automatic engine stopping is inhibited.

A control device for a series hybrid vehicle, the series hybrid vehicle including: an engine, a catalyst that is disposed in an exhaust path of the engine, a generator that generates electric power using power output from the engine, a battery that stores the electric power generated by the generator, and a traction electric motor that is driven with electric power of the battery, the control device including an electronic control unit configured to: acquire information on a temperature of the catalyst; and, when the information on the temperature of the catalyst is information corresponding to the temperature of the catalyst being equal to or higher than a predetermined temperature, change an operating point of the engine to an operating point that reduces a temperature of the exhaust gas while generating the electric power by the generator.

A control device for an engine, includes: an air intake controller controlling a quantity of intake air to be supplied to a catalyst provided in an exhaust passage by controlling an open degree of a throttle valve provided in an intake passage; a fuel controller controlling fuel supply to the engine, wherein the fuel controller stops the fuel supply and the air intake controller performs a first control supplying intake air to the catalyst by opening the throttle valve, for a predetermined period of time after an end of the first control, the fuel controller stops the fuel supply, and the air intake controller performs a second control decreasing the open degree of the throttle valve to an open degree smaller than that during the first control, and after the predetermined period of time passes, the fuel controller starts a third control supplying the fuel to the engine.

The invention provides an operation system for a vehicle, comprising an internal combustion engine (1) comprising a cylinder (301, 302), and an exhaust guide (500, 501, 502) being arranged to guide a gas flow from the cylinder (301, 302) to the atmosphere, wherein the vehicle operation system further comprises a pneumatic system (660), and an air conduit (661) connecting the pneumatic system (660) with the exhaust guide (500, 501, 502) for allowing a flow of compressed air from the pneumatic system into the exhaust guide (500, 501, 502).

An internal combustion engine with a turbocharger includes a catalyst, downstream of a turbine, in an exhaust passage. The internal combustion engine includes a waste gate, and a waste gate valve. The internal combustion engine further includes a flow-adjusting member or a flow-adjusting mechanism. The flow-adjusting member disperses a flow of exhaust gas from the waste gate when the opening degree of the waste gate valve is small and concentrates the flow when the opening degree of the waste gate valve is large. The flow-adjusting mechanism switches between a dispersed state in which the flow is dispersed and a concentrate state in which the flow is concentrated.

A control support device for supporting control of a vehicle using a learned model obtained by machine learning, includes: a data acquisition unit acquiring sensor information, which is related to a state of an inside or an outside of a supplying vehicle that supplies parameters to be used for the machine learning; a learning unit generating a learned model by performing the machine learning using an input/output data set, which is the sensor information acquired by the data acquisition unit and is data including input parameters and an output parameter of the learned model; and a transmission unit Transmitting at least one of the generated learned model and an output parameter calculated by inputting sensor information of the vehicle, control of which is supported, to the generated learned model as an input parameter.

A powertrain system includes a port injection internal combustion engine. A first start process is a process in which fuel is enclosed in a compression stroke cylinder when the engine is stopped, and based on a stored crank stop position, ignition is performed in a first cycle of the compression stroke cylinder upon engine start. A second start process is a process in which, based on the stored crank stop position, fuel injection is performed for an intake stroke cylinder while the engine is stopped, and based on the stored crank stop position, ignition is performed in the first cycle of the intake stroke cylinder upon engine start. When a catalyst temperature at the time engine start is requested is equal to or higher than a first threshold, a control device starts the internal combustion engine by at least one of the first start process and the second start process.

An electronic control unit performs a cylinder-by-cylinder correction of a fuel injection amount to cause differences among air-fuel ratios of air-fuel mixture burned in multiple cylinders. In a case in which the cylinder-by-cylinder correction of the fuel injection amount results in a cylinder in which combustion is performed at an air-fuel ratio richer than an output air-fuel ratio, the output air-fuel ratio being an air-fuel ratio at which combustion torque is maximized, the electronic control unit performs a cylinder-by-cylinder correction of ignition timing such that the ignition timing of the cylinder in which combustion is performed at the air-fuel ratio richer than the output air-fuel ratio becomes more advanced than the ignition timing of the other cylinders.