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Engine overspeed protection method and engine controller

An engine controller and engine overspeed technology, applied in the field of data processing, can solve problems such as affecting the protection effect and the inaccuracy of the engine, and achieve the effect of improving the protection effect and improving the accuracy.

Active Publication Date: 2021-03-26
GUANGXI YUCHAI MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the method in the prior art only monitors the engine speed, and it is not accurate to judge whether the engine is overloaded only by the engine speed, thus affecting the protection effect

Method used

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  • Engine overspeed protection method and engine controller
  • Engine overspeed protection method and engine controller
  • Engine overspeed protection method and engine controller

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Embodiment Construction

[0053] Embodiments of the present application provide a method for engine overspeed protection and an engine controller, which are used to improve the accuracy of judging whether the engine is overloaded, thereby improving the protection effect on the engine.

[0054] The technical solution in this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only some of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0055] The common overspeed protection strategy is the same as the control strategy. The storage is placed in the Core (core) 1 of the vehicle ECU or a separate core to run, but Core1 is the application layer, which may run to death ...

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PUM

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Abstract

The invention provides an engine overspeed protection method and an engine controller which are used for improving the accuracy of judging whether an engine is overloaded or not. The engine overspeedprotection method comprises the steps that the engine controller obtains the engine accelerator opening degree, the engine rotating speed and the bottom layer energizing time of an engine; the enginecontroller judges whether the engine simultaneously meets the requirements that the accelerator opening degree is smaller than a calibration value of the accelerator opening degree, the engine rotating speed is larger than the calibration value of the engine rotating speed, and the bottom layer energizing time is smaller than the calibration value of the bottom layer energizing time or not; if yes, the engine controller determines that the engine is in an Overrun reverse towing working condition state; the engine controller obtains a supercharging pressure value of the engine; the engine controller judges whether the supercharging pressure value is larger than the calibration value or not; if yes, the engine controller determines that a fuel injector of the engine is in an abnormal state;and the engine controller switches off the fuel injector.

Description

technical field [0001] The present application relates to the field of data processing, in particular to an engine overspeed protection method and an engine controller. Background technique [0002] With the development of science and technology, as the society demands higher and higher engine capabilities, the requirements for engine safety performance also increase. [0003] In actual situations, the engine may be overloaded. If the engine continues to be overloaded, failures such as cylinder scuffing and crankshaft fracture will occur, causing damage to the engine. In the prior art, the engine controller monitors the speed of the engine to determine whether the engine is overloaded. If the speed exceeds a predetermined value, the engine will be forced to cut off fuel to protect the engine. [0004] However, the method in the prior art only monitors the engine speed, and it is inaccurate to judge whether the engine is overloaded only by the engine speed, thereby affecting...

Claims

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Application Information

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IPC IPC(8): F02D41/00F02D41/30
CPCF02D41/00F02D41/30F02D2200/101F02D2200/602
Inventor 刘星桑海浪邓小超周圣凯
Owner GUANGXI YUCHAI MASCH CO LTD
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