Provided is a control device of a gas turbine including a compressor, a combustor, and a turbine. The control device executes load control of allowing an operation control point for operation control of a gas turbine to vary in response to a load of the gas turbine. The operation of the gas turbine is controlled on the basis of a rated temperature adjustment line for temperature adjustment control of a flue gas temperature at a predetermined load to a rated flue gas temperature at which performance of the gas turbine becomes rated performance, a preceding setting line for setting of the flue gas temperature at the predetermined load to a preceding flue gas temperature that becomes lower in precedence to the rated flue gas temperature, and a limit temperature adjustment line for temperature adjustment control.

A dual fuel engine system, such as for diesel and natural gas operation, includes a control system having an electronic control unit structured to vary a stored control valve for a fuel delivery parameter, responsive to engine power output. The engine power output can be determined by in-cylinder pressure monitoring during a liquid fuel mode. The stored control value can be a dynamically updated value in an engine fueling map.

A method of diagnosing a non-coupling breather hose includes: sensing a revolutions per minute (RPM) after starting an engine; operating a differential pressure sensor; and determining that a breather hose is not coupled when an output voltage from the differential pressure sensor or a holding time of the output voltage is in a predetermined range.

Methods and systems are provided for adjusting a throttle based on an intake oxygen sensor output. In one example, a method may include adjusting a position of a throttle based on a dilution threshold and a total aircharge dilution level, the total dilution aircharge level based on an output of an intake oxygen sensor. Additionally, spark timing may be adjusted based on the total aircharge dilution level.

Methods and systems are provided for a dual function imaging device. In one example, a method may comprise imaging exhaust gas outside of a reverse engine condition via the imaging device. The imaging device may image a surrounding area during the reverse engine condition.

An ignition performance increasing method of an automobile may include inputting a crank position sensor signal to detect a rotational position of a crankshaft of an engine, generating an engine angle tick, acquiring an engine synchronization by determining a position of the crankshaft and a position of a cam, setting a sync task at a specified position, and performing fuel injection and ignition.

A method for controlling an internal combustion engine having a plurality of cylinders including a first cylinder and one or more remaining cylinders includes selecting a desired auto-ignition dwell for a first combustion cycle for the first cylinder of the plurality of cylinders. A first fuel mass is provided to the first cylinder which is combusted during the first combustion cycle. An actual auto-ignition dwell for the first combustion cycle which results from the first fuel mass is determined and a dwell error is calculated. The dwell error is used to determine a second fuel mass which provided to the first cylinder and which is combusted during the second combustion cycle.

The vehicle control device executes: a stop process for stopping fuel supply to two cylinders to be stopped; and a selection process of selecting one cylinder to be a stop instruction for stopping fuel supply from among the cylinders to be stopped. The selection process is a process of selecting a cylinder whose compression top dead center appears earliest among the stop target cylinders. The crank angle interval from when the cylinder to be the stop instruction target is selected until the stop instruction target cylinder is switched to the next cylinder among the stop target cylinders is the stoppable angle interval. The stop instruction for the selected cylinder is received before the fuel injection start time and at the stoppable angle interval. The control device executes a retard process of retarding the fuel injection start timing so that the stoppable angle interval includes the fuel injection start timing.

Methods and systems are provided for a dual function imaging device. In one example, a method may comprise imaging exhaust gas outside of a reverse engine condition via the imaging device. The imaging device may image a surrounding area during the reverse engine condition.

A method of diagnosing a non-coupling breather hose includes: sensing a revolutions per minute (RPM) after starting an engine; operating a differential pressure sensor; and determining that a breather hose is not coupled when an output voltage from the differential pressure sensor or a holding time of the output voltage is in a predetermined range.