Self-adaptive step-by-step speed regulation method for diesel engine

Abstract

The invention discloses a self-adaptive step-by-step speed regulation method for a diesel engine. The method comprises the follow steps: S1, obtaining the initial driving step number of a stepping motor of the diesel engine in the current gear, and driving the stepping motor to the initial driving step number; S2, monitoring the actual speed of the diesel engine, and judging whether the error between the actual speed and the preset target speed of the diesel engine at the current gear is larger than the preset threshold value or not; if yes, going to S3; if not, going to S4; S3, calculating the driving step number of the stepping motor, adjusting the driving step number of the stepping motor of the diesel engine in the current gear, and going to S2; S4, storing the driving step number of the stepping motor of the diesel engine in the current gear to a step-by-step speed regulation system for the diesel engine. When the speed of the diesel engine does not conform to the standard, the method can quickly and accurately automatically regulate the speed, and meet the overall performance requirements of the diesel engine, the control effect is good, debugging is convenient , and the diesel engine is economic and durable.

Description

technical field [0001] The invention relates to the field of diesel engine speed regulation control, in particular to an adaptive stepping speed regulation method for diesel locomotive diesel engines. Background technique [0002] At present, the domestic microcomputer-controlled stepping speed regulation system of diesel engine is mainly through the controller to adjust the gear position of the diesel engine. , so as to change the pre-tightening force of the speed regulating spring, so that the equipment connected to the rear end of the speed regulating spring will change accordingly, and the position of the speed regulating fuel supply rod will control the fuel supply of the diesel engine to achieve the purpose of adjusting the speed of the diesel engine. [0003] In actual control, because the speed regulating spring is a nonlinear tower spring with similar parameters, the parameters of different speed regulating springs are not exactly the same, resulting in errors in th...

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Problems solved by technology

[0004] 1. Replace the governor spring, but the replacement work is more complicated, and due to technical reasons, it cannot be guaranteed that the problem can be solved immediately after replacement

[0005] 2. According to the debugging of the locomotive, modify the number of driving steps according to the gear position on the original CPU software, increase or decrease the pre-tightening force of the governor spring, and increase or decrease the speed of the diesel engine accordingly. However, when the number of locomotives is large, it is easy to cause the computer software to The version is chaotic and inconvenient to maintain in the future

This method increases economic cost and workload, and still requires manual operation, which is troublesome

[0007] 4. Through the PC interface, set the number of steps for each gear on the display, and transmit it to the CPU software by communication. However, it is inconvenient when there is a problem with the display or the communication is not normal. In addition, modifying the number of steps on the display cannot be guaranteed. One time is enough, and after a long time, the locomotive equipment will wear out to a certain extent, the value set before may not always be accurate, and it needs to be constantly corrected

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