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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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the method in the prior art only monitors the engine speed, and it is not accurate to

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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

Examples

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Example Embodiment

[0053] The present application example provides an engine speeding method and an engine controller for increasing the accuracy of determining whether the engine is overload, thereby promoting the protection effect of the engine.

[0054] Next, the technical solutions in the present application will be described in the present application, and it is understood that the described embodiments are merely described herein, not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative labor premises, all of the present application protected.

[0055] The common speed of overspeed strategy is the same as the control strategy, stored in the core (core) 1 or separate core of the vehicle ECU, but Core1 is an application layer, which will occur because of the special reason for other strategies, can not run normally, driving in driving In the case, the ov...

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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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