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A speed regulation method, device and system

A speed and adjustment value technology, applied in fuel injection control, engine control, machine/engine, etc., can solve the problems of high engine speed regulation, long time, slow response, etc., to reduce speed regulation, quickly adjust speed, The effect of improving the response speed

Active Publication Date: 2015-07-29
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the speed adjustment takes a long time, the reaction is slow, and it cannot respond quickly to the change of the engine load. The engine speed adjustment rate is high, and the speed adjustment effect is not ideal.

Method used

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  • A speed regulation method, device and system
  • A speed regulation method, device and system
  • A speed regulation method, device and system

Examples

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no. 1 example

[0072] see figure 1 , which is a flow chart of the first embodiment of the speed adjustment method provided by the present invention, the method includes:

[0073] S101. Acquiring the actual rotational speed.

[0074] In the first embodiment of the present invention, the electronic control unit of the electronically controlled engine can be connected with sensors, such as engine speed sensor, pressure sensor, temperature sensor and so on. Wherein, the actual rotational speed of the engine can be acquired by using the engine rotational speed sensor. During specific implementation, the actual rotational speed of the engine may be collected once every predetermined period T. Preferably, N times are collected continuously, and N is a preset value.

[0075] S102, judging whether the change of the actual rotational speed satisfies a preset condition, and obtaining a first judging result.

[0076] Judging whether the change in the actual rotational speed satisfies a preset condit...

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Abstract

The invention relates to the field of an engine, in particular to a rotation speed regulation method, a rotation speed regulation device and a rotation speed regulation system. The method comprises following steps of collecting a real rotation speed; judging whether the change of the real rotation speed satisfies a preset condition or not, and acquiring a first judgment result; acquiring an angular acceleration average value when the first judgment result shows that the change of the rotation speed meets the preset condition; acquiring a torque corresponding to the variable quantity of a load according to the angular acceleration average value; and acquiring a first output torque according to the torque corresponding to the variable quantity of the load, acquiring the adjusted oil injection quantity according to the first output torque so as to control the output of the oil injection quantity of an oil injector, and utilizing the output of the oil injection quantity to adjust the rotation speed. By utilizing the method, the real rotation speed can be quickly stabilized, the response rate is improved, the rotation speed adjusting effect is good, and the speed regulation rate is reduced.

Description

technical field [0001] The invention relates to the field of engines, in particular to a speed regulating method, device and system. Background technique [0002] An electronically controlled engine is a device that uses an ECU (Electronic Control Unit, Electronic Control Unit) to control the operation of the engine. Among them, the ECU is the core of the engine electronic control system. It collects various environmental information and working condition signals through sensors, and takes the engine speed and load as the basic signals reflecting the actual working conditions of the engine. The basic fuel injection quantity is determined by the oil quantity, and it is compensated according to various factors to obtain the best fuel injection quantity, and then the output is controlled by the actuator. ECU has greatly improved the performance of the engine and improved the control accuracy. [0003] In practical applications, the electronically controlled engine used for po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D41/30F02D41/04
Inventor 刘兴义武玉臣杨新达刘栋李少佳
Owner WEICHAI POWER CO LTD
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