An example method includes: determining a throttle command for a servomotor configured to control a position of a throttle lever, where the position of the throttle lever indicates a commanded thrust for the first engine of the aircraft; determining a trim command for the first engine to equalize the thrust of the first engine with the respective thrust of the second engine; determining that a magnitude of the throttle command is less than a magnitude of a threshold throttle command indicative of a dead zone of the servomotor, where the servomotor is irresponsive to a given throttle command within the dead zone; modifying the trim command based on the throttle command to generate a modified trim command that compensates for irresponsiveness of the servomotor to the throttle command; and changing the thrust generated by the first engine based on the modified trim command.

A fuel property determining device for an engine is provided, the device retarding a fuel injection timing and determining a fuel property based on a combustion variation of the engine caused by the retarding. The device includes a processor configured to control a parameter related to combustibility so as to degrade a combustion state before the fuel injection timing is retarded, the parameter being different from the fuel injection timing.

A method of optimizing the noise generated by a hybrid power plant of a rotorcraft in flight, the hybrid power plant driving a main rotor of the rotorcraft in rotation and being provided with at least one engine, with at least one electric machine, and with at least one electrical energy source that electrically powers the electric machine. The method includes a determination step for determining a required power delivered by the hybrid power plant and that is required for the flight phase, and a distribution step for distributing the required power between the at least one engine and the electric machine as a function of a target noise level and of the required power for the flight phase, as well as of a model for the noise generated by the at least one engine as a function of one of its parameters.

The magnetic resistance of a magnetic path that passes through a coil (6) is increased by magnetically dividing a stator core into a plurality of divided cores (4, 5) in such a manner that the magnetic flux of a permanent magnet (7) flows through the magnetic path when a projection (82) of a plunger (8) magnetically connects the divided cores (4, 5), hence the magnetic resistance of the magnetic path that passes through the coil (6) rapidly changes due to a positional relationship between a gap between the divided cores (4, 5) and the plunger (8), and the magnetic flux that flows through the magnetic path rapidly changes, and moreover a large back electromotive force is produced.

The present invention relates to an apparatus and method for controlling a construction machine. An apparatus for controlling a construction machine according to an embodiment of the present invention may compare a fuel efficiency gain expected when engine revolutions per minute (RPM) is decreased with a fuel efficiency gain expected when a current torque curve is changed to a torque curve corresponding to a condition in which auxiliary power is provided and selected from among the plurality of torque curves and then the latter torque curve is selectively applied, based on the fuel efficiency map, and may control an engine by means of a method by which a larger fuel efficiency gain is expected.

A method and system of diagnosing a lubrication system of an engine includes determining a lubrication system fault and controlling an engine in response to the fault. The method is operative to first determine a poor state of health for a lubrication system, then determine an oil degradation or lube system fault. In response to a lube system fault, engine operation is altered in order to reduce the negative effects of the lube system fault such as increasing minimum idle speed in response to reduced oil pressure.

A system for controlling a variable turbocharger includes: a first controller outputting a duty value for adjusting an opening degree of a vane of a turbocharger, and a second controller checking opening or closing operations of the vane when the first controller adjusts the opening degree of the vane. In particular, the second controller outputs a corrected duty value by correcting the output duty value, based on a correction map, in consideration of a back pressure according to whether the vane is opened or closed.

A method and system of diagnosing a lubrication system of an engine includes determining a lubrication system fault and controlling an engine in response to the fault. The method is operative to first determine a poor state of health for a lubrication system, then determine an oil degradation or lube system fault. In response to a lube system fault, engine operation is altered in order to reduce the negative effects of the lube system fault such as increasing minimum idle speed in response to reduced oil pressure.

An automatic transmission includes a main shaft, a counter shaft, a transmission mechanism capable of establishing a plurality of gear ranges by switching a transmission path of a driving force transmitted from the main shaft to the counter shaft by a combination of engagement and release of a plurality of engaging mechanisms, a determination unit configured to determine whether the transmission mechanism is switching the gear range, and a switching unit configured to switch information of a moment of inertia about the main shaft, which is used for control, between first information during establishment of the gear range and second information during switching of the gear range based on a determination result of the determination unit.

A system and method for controlling the operations of a vehicle in response to an analysis of the vehicle's status and performance compared to a set of external performance parameters. The vehicle may be operable to adjust its performance in response to the analysis in order to comply with the performance parameters. The vehicle may further be operable to prevent activation or continued operation of one or more components in response to the analysis.