Engine control method and engine

Abstract

The invention relates to the field of engines, and discloses an engine control method and an engine. The engine control method comprises the steps that S1, whether the engine is in a rotating speed control mode or not is detected and judged, and if yes, the step S2 is executed; S2, whether the rotating speed of the engine fluctuates periodically or not is detected and judged, and if yes, the step S3 is executed; S3, whether the load rate of the engine fluctuates in a first threshold interval or not is detected and judged, and if yes, the step S4 is executed; and S4, whether the actual torque oil mass conversion coefficient exceeds a second threshold value interval or not is detected and judged, if yes, it is judged that torque oil mass conversion MAP calibration is abnormal, and the actual torque oil mass conversion coefficient is the ratio of the final torque to the final oil injection quantity. Therefore, the method can judge the rationality of the torque oil quantity conversion MAP, and further lays a foundation for solving the problem of rotating speed fluctuation caused by unreasonable calibration of the actual torque oil quantity conversion coefficient of the torque oil quantity conversion MAP.

Description

Technical field [0001] The present invention relates to the field of engine control, and more particularly to an engine control method and an engine. Background technique [0002] The speed control is set to the set speed by the rotational speed, and the current speed is the actual speed, set the deviation of the rotational speed and the actual speed, and combined with the PID parameter to calculate the control torque, then convert the torque to actual injector according to the torque oil volume. To maintain the stability of the actual speed. [0003] However, there are a variety of factors that cause fluctuations in engine speed in actual work, which affect the stability of the speed. For example, when the PID parameter calibrates too large or too, there is a certain degree of delay in PID control, which causes a certain degree of rotational speed responsiveness and speed stability problems. In addition, the PID parameter calibration is unreasonable and does not cause the sole i...

AI Technical Summary

Problems solved by technology

[0005] An object of the present invention is to propose an engine control method capable of judging the rationality of the torque oil volume conversion MAP, so as to lay a foundation for solving the problem of rotational speed fluctuation due to the unreasonable calibration of the actual torque oil volume conversion coefficient of the torque oil volume conversion MAP

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