A method for operating an internal combustion engine having a camshaft phase adjuster, including: providing a nonlinear final control element model, which indicates via a functional relationship an angular velocity of a relative adjustment of the camshaft phase adjuster as a function of an actuator correcting variable for the control of the camshaft phase adjuster; carrying out a control based on a deviation between a predefined camshaft angle adjustment setpoint value, and a camshaft angle adjustment actual value, to obtain as a control output a setpoint positioning rate of the camshaft phase adjuster; calculating the actuator correcting variable as a function of the setpoint positioning rate using an inverted final control element model; applying a predefined correction variable to the actuator correcting variable; controlling the camshaft phase adjuster using the actuator correcting variable to which the correction variable has been applied, to operate the internal combustion engine.

Methods and systems are provided for catalyst control. In one example, a method may modulate a downstream catalyst by applying a square waveform to an outer feedback control loop. A fuel adjustment is performed in accordance with the square waveform to create an air-fuel ratio oscillation at an upstream catalyst brick and at a downstream catalyst brick.

A system can control an engine during a shift event of a multi-ratio transmission driven by the engine. The engine can include a throttle valve configured to selectively regulate a flow rate of air entering the engine. The system can include a controller configured to receive shift data indicative of an execution of the shift event by the multi-ratio transmission, receive first sensor data indicative of a temperature of the engine and second sensor data indicative of a temperature of the multi-ratio transmission, obtain a transient air value based on the temperature of the engine and the temperature of the multi-ratio transmission when the controller has received the shift data, and signal the throttle valve to move to a position corresponding to the transient air value when the controller has received the shift data.

An engine control device includes an engine model having a neural network that inputs a manipulated variable of the engine and computes a controlled variable; and a controller that computes the manipulated variable so as to reduce a deviation between the controlled variable and a target controlled variable. The neural network includes an input layer to which the manipulated variable are input; a first hidden layer including a first fully connected layer; a second hidden later including a second fully connected layer that generates a plurality of second output values at a first time and has a return path on which the plurality of second output values at a second time, earlier than the first time, are input into the second fully connected layer; and an output layer from which the plurality of second output values at the first time are output as the controlled variable.

System, apparatus, and methods are disclosed for improving vehicle acceleration performance. One or more devices of the internal combustion engine system are controlled in response to a torque transition event indicator and/or one or more vehicle acceleration event indicators indicating a vehicle acceleration event is imminent to improve vehicle response during acceleration.

Methods and systems are provided for an oxygen sensor heater. In one example, a method may include applying a less than maximum duty cycle of voltage to the oxygen sensor heater during an engine cold start (e.g., when a temperature of the oxygen sensor is less than its light-off temperature) and adjusting the applied duty cycle of voltage to maintain a constant amount of power. In this way, the oxygen sensor may be heated at a constant rate even as a resistance of the oxygen sensor heater increases, decreasing an amount of time before the oxygen sensor reaches its light-off temperature.

There is described a system and method for controlling a temperature in the subchamber of a rotary engine. At least one first measurement of at least one engine operating parameter, a second measurement of the actual value of a temperature in the subchamber, and at least one third measurement of at least one aircraft operating parameter are received. A setpoint for the temperature in the subchamber is determined from the at least one first measurement and the at least one third measurement. At least one control signal is output to the engine for adjusting the actual value of the temperature in the subchamber towards the setpoint.

A method for operating an engine system including an internal combustion engine and an exhaust gas aftertreatment device, including: carrying out a fill level control to control a fill level of the exhaust gas aftertreatment device as a function of a predefined fill level setpoint value; operating a pilot control for the fill level control; and adapting the pilot control as a function of a deviation between a measured lambda value and a modeled lambda value.

A method for the open-loop and closed-loop control of an internal combustion engine, in particular a diesel engine or gas engine, with a generator and asynchronous machine, including the following steps: detecting at least one electrical characteristic variable of the generator, wherein the electrical characteristic variable is selected from current, voltage or frequency; determining a characteristic variable change in the electrical characteristic variable of the generator in a predetermined time interval; comparing the change in characteristic variable with a first threshold value; and in the event that the change in characteristic variable is greater than the first threshold value, changing from a standard speed control of the internal combustion engine to a feed-forward control.

A method for operating a common-rail fuel supply system of an internal combustion engine includes determining, dependent on an operating point of the engine, a set point rate of delivery of the high-pressure pumping device, and a set point pressure for the pressure storage system under high pressure, determining, dependent on a deviation between the set point pressure and an actual pressure in the pressure storage system, for a first part quantity of the throttle valves a closed-loop control portion for the position of the respective throttle valve, and activating the first part quantity of the throttle valves with the closed-loop control portion in addition to open-loop control for only the respective throttle valve of the first part quantity of the throttle valves. The, or each, throttle valve of a second part quantity of the throttle valves is exclusively activated with the open-loop control portion.