摘要:
An engine torque control module comprises a derivative module and a cylinder torque module. The derivative module determines a derivative term for a first cylinder of an internal combustion engine based on rotation of a crankshaft and determines an average derivative term for the first cylinder based upon the derivative term. The cylinder torque module determines an operating condition of the first cylinder based on the average derivative term, adjusts a torque output of the first cylinder based on the operating condition, and adjusts a torque output of a second cylinder based on the operating condition.
摘要:
A system and method to control fuel delivery to an engine at startup includes a crank sensor that determines a rotational position of the engine. A control module calculates an air mass of a first cylinder based on the rotational position of the engine and delivers fuel to the first cylinder based on the air mass. The air mass is based on a volume, a pressure and a temperature of the first cylinder.
摘要:
Air/fuel ratio control compensation is applied to an internal combustion engine having pneumatic fuel injection, wherein an engine operating condition is determined and appropriate compensation provided to the fuel command when an operating condition is sensed in which a significant fuel residue remains in the pneumatic injector after the end of an injection period.
摘要:
A method and a control system that includes a window module that determines a piston position window, a mean effective pressure determination module that generates a mean effective pressure with in-cylinder pressure signals within the piston position window and an engine control module that controls the engine using the mean effective pressure.
摘要:
A sensor reset system includes an engine control module and a sensor reset circuit. The engine control module is configured to receive a sensor pressure signal from a cylinder pressure sensor. The sensor pressure signal indicates a pressure within a cylinder of an engine. The engine control module is further configured to: control operation of the engine based on the sensor pressure signal; determine whether to reset the cylinder pressure sensor and generate a reset signal; and encode the reset signal to generate an encoded reset signal. The sensor reset circuit is configured to adjust an output of the cylinder pressure sensor based on the encoded reset signal to reset the cylinder pressure sensor.
摘要:
A fuel injection system includes an injector control module, a current detection module, and a position determination module. The injector control module controls current through a solenoid of a fuel injector for a predetermined period. The current detection module measures an amount of current through the solenoid after the predetermined period. The position determination module determines whether the fuel injector injected fuel during the predetermined period based on when the amount of current through the solenoid is less than or equal to a predetermined current.
摘要:
A pressure sensor diagnostic system of the present disclosure includes an excitation module, a frequency determination module, and a fault determination module. The excitation module excites an in-cylinder pressure sensor and causes the in-cylinder pressure sensor to oscillate. The frequency determination module determines an oscillation frequency of the in-cylinder pressure sensor. The fault determination module diagnoses the in-cylinder pressure sensor based on the oscillation frequency.
摘要:
An engine control system is provided. The system includes: an engine torque module that estimates torque output based on charge energy; and a cylinder mode module that controls fuel cut-off and adjusts spark timing to the engine based on the torque output.
摘要:
An engine torque control system for balancing torque output across cylinders of an internal combustion engine includes a first module that determines a derivative term for each cylinder of the engine based on rotation of a crankshaft. A second module determines a torque correction for a first cylinder based on an average derivative term associated with the first cylinder. The second module adjusts a torque output of the first cylinder based on the torque correction and adjusts a torque output of a second cylinder based on the torque correction.
摘要:
Internal combustion engine control includes a dynamic block learn array structure which is adaptable in accord with monitored closed-loop control activity. Cells are consolidated when neighboring cells call for a substantially common control correction, with the most current block learn information replacing more obsolete block learn information. A persistent need for additional compensation despite the block learn activity triggers addition of cells to the structure, or triggers redefinition of cell boundaries to most effectively learn the appropriate compensation.