A control apparatus for a gasoline engine having a fuel injection means including an in-cylinder injection valve. The control apparatus comprises a controller configured to, when warming up an exhaust gas purification catalyst provided in an exhaust passage provided of the gasoline engine, control the fuel injection means to conduct one or more main injections, control the in-cylinder injection valve to conduct a post injection, perform a retard correction of an ignition timing at which fuel injected by the one or more main injections is ignited, determine an injection quantity by the one or more main injections and an injection quantity by the post injection such that an air-fuel mixture formed in the cylinder by gasoline fuel injected by the one or more main injections has a predetermined lean air-fuel ratio at which a difference between an actual output torque and a required torque is within a predetermined allowable range.

A learned neural network learned in weights using an engine load, an engine speed, and an intake pressure inside the engine intake passage downstream of the throttle valve (19) as input parameters of the neural network and using leakage of blow-by gas from a blow-by gas feed path (20) as a truth label is stored. At the time of operation of the vehicle, the learned neural network is used to detect the abnormality of leakage of blow-by gas from the blow-by gas feed path (20) from the above input parameters.

A control device that controls an internal combustion engine includes an electronic control unit configured to, during an operation other than a start-up of the internal combustion engine, cause the fuel injection valve to execute one or a plurality of fuel injections in each cycle such that a target fuel injection amount in one injection becomes equal to or greater than a predetermined minimum injection amount, and when the internal combustion engine is started up, in a case where startability of the internal combustion engine is insufficient, execute an excess split injection control for causing the fuel injection valve to execute more fuel injections than the maximum number of fuel injections per cycle while making the target fuel injection amount in one injection smaller than the minimum injection amount per cycle and maintaining a target total fuel injection amount per cycle.

A cooling water control apparatus has a setting device which sets a target heat amount line such that a condition where a transferred heat amount which is transferred to a heater core is equal to a required heat amount which is required by the heater core is satisfied at a desired time point at which the transferred heat amount starts to be actually used, the target heat amount line representing a successive target value of the transferred heat amount during a period until the desired time point; and a first controlling device which makes a cooling water circulate in a first pipe, stops the circulation of the cooling water in a second pipe and adjusts an output of an engine such that the transferred heat amount follows the target heat amount line.

Fuel management system for enhanced operation of a spark ignition gasoline engine. Injectors inject an anti-knock agent such as ethanol directly into a cylinder. It is preferred that the direct injection occur after the inlet valve is closed. It is also preferred that stoichiometric operation with a three way catalyst be used to minimize emissions. In addition, it is also preferred that the anti-knock agents have a heat of vaporization per unit of combustion energy that is at least three times that of gasoline.

The invention relates to a method to control an internal combustion engine. The internal combustion engine comprises a cylinder, an exhaust guide arranged to guide an exhaust flow from the cylinder through a turbine, and a bypass guide arranged to bypass a bypass flow from the cylinder past the turbine. The method comprises the step to determine a value of at least one engine operation parameter. The method is characterized by the step to determine a target value of an exhaust performance parameter depending on the determined engine operation parameter value. Further, the method comprises, depending on the determined target exhaust performance parameter value, the step to control the exhaust flow through the exhaust guide and the step to control the bypass flow through the bypass guide.

A fuel separation system includes a fuel separator configured to receive a fuel stream and separate the fuel stream, based on a volatility of the fuel stream, into a vapor stream defined by a first auto-ignition characteristic value and a first liquid stream defined by a second auto-ignition characteristic value, the second auto-ignition characteristic value greater than the first auto-ignition characteristic value; and a control system communicably coupled to the fuel separator and operable to receive an input from an engine, the input including an engine operating condition, the control system configured to adjust an operating parameter of the fuel separator, based at least in part on the engine operating condition, to vary at least one of the first or second auto-ignition characteristic values.

The method for controlling valve timing of an engine includes: classifying control regions; applying a maximum duration to an intake valve and a long duration to an exhaust valve in a first control region; advancing Intake Valve Closing timing, applying the long duration to the exhaust valve, and maintaining a maximum valve overlap in a second control region; applying the long duration to the exhaust valve and advancing the IVC timing and Exhaust Valve Closing timing in a third control region; applying a short duration to the exhaust valve and controlling the EVC timing in a fourth control region; controlling a throttle valve, applying the short duration to the exhaust valve, and retarding Exhaust Valve Opening timing in a fifth control region; and controlling the throttle valve and the EVC timing, applying the long duration to the exhaust valve, advancing the EVO timing in a sixth control region.

A system is disclosed including but not limited to a processor; a hybrid power source for servicing a system load, the hybrid power source comprising a natural gas engine, a diesel engine and a battery; a linear computer program comprising, instructions determining a current system load serviced by power provided from the hybrid power source; instructions to determine a current operating state for the natural gas engine, the diesel engine and the battery; instructions to use linear programming to determine a new operating state for the natural gas engine, the diesel engine and the battery to reduce for power consumption servicing the current system load the natural gas engine, the diesel engine and the battery; and instructions to replace the current operating state for the natural gas engine, the diesel engine and the battery to the new operating state for the natural gas engine, the diesel engine and the battery.

In a method of operating a generator connected to a power supply network, in particular a synchronous generator, during a network fault in the power supply network, in particular during an electric short-circuit, electric excitation of the generator is at least temporarily reduced based on the value of at least one operating parameter of the generator prior to the network fault and/or during the network fault.