阅读说明：本技术 一种发动机动态补偿装置 (Dynamic compensation device for engine ) 是由 徐亚宁 于 2020-12-03 设计创作，主要内容包括：本发明公开了一种发动机动态补偿装置,包括设置于控制柜内的发动机控制单元、设置于发动机机体或者控制柜内的动态系统控制单元、设置于发动机输出端的转速传感器、设置于发动机自由端的霍尔传感器和定时盘、设置于发动机各个缸的进气支管,所述进气支管上设置有电喷阀、调压阀、燃气过滤器以及电磁阀,本发明方案在保证发动机安全运行的前提下,有效提高发动机的动态响应,自动化程度高、操作便利、安全可靠。(The invention discloses an engine dynamic compensation device, which comprises an engine control unit arranged in a control cabinet, a dynamic system control unit arranged in an engine body or the control cabinet, a rotating speed sensor arranged at the output end of an engine, a Hall sensor and a timing disk arranged at the free end of the engine, and air inlet branch pipes arranged on all cylinders of the engine, wherein the air inlet branch pipes are provided with an electric injection valve, a pressure regulating valve, a gas filter and an electromagnetic valve.)

1. The dynamic compensation device of the engine comprises the engine (10), and is characterized by further comprising a compensation air inlet unit, a signal acquisition unit and a control unit;

the control unit comprises an engine control unit (31) arranged in the control cabinet and a dynamic system control unit (30) arranged in the engine body of the engine (10) or the control cabinet;

the signal acquisition unit comprises a rotating speed sensor (20) arranged at the output end of the engine (10), a Hall sensor (22) arranged at the free end of the engine (10) and a timing disc (23);

the compensation air inlet unit comprises air inlet branch pipes (12) arranged on each cylinder of the engine (10), and an electric injection valve (11), a pressure regulating valve (13), a gas filter (14) and an electromagnetic valve (15) are arranged on the air inlet branch pipes (12);

the output end of the signal acquisition unit is connected with a sensor signal unit (32), the output end of the sensor signal unit (32) is connected with a dynamic system control unit (30), the input end of an electronic injection valve (11) is connected with an electronic injection valve output unit (33), and the output end of an engine control unit (31) is connected with an electromagnetic valve (15) and the dynamic system control unit (30);

the engine control unit (31) controls the electromagnetic valve (15) to be opened, and the fuel gas reaches the electric injection valve (11) of each cylinder after passing through the electromagnetic valve (15), the fuel gas filter (14) and the pressure regulating valve (13); the dynamic system control unit (30) obtains a required control target through the engine control unit (31), analyzes the running state of the engine in real time by combining the sensor signal unit (32), and controls the output of the electronic injection valve output unit (33) to quickly supplement fuel when detecting that the engine is under the sudden loading working condition.

2. The engine dynamics compensation apparatus according to claim 1, characterized in that: an engine gear ring (21) is further arranged between the rotating speed sensor (20) and the output end of the engine, and the rotating speed sensor (20) is a magnetoelectric sensor and can be arranged on the engine gear ring (21) at the output end of the engine (10) in an induction mode.

3. The engine dynamics compensation apparatus according to claim 1, characterized in that: the timing disk (23) is provided with magnetic nails at different intervals, and the Hall sensor (22) determines the change of the timing disk (23) by detecting the position change of the magnetic nails.

Technical Field

The invention relates to the technical field of engines, in particular to a dynamic compensation device for an engine.

Background

With the national emphasis on environmental protection, power machines using diesel oil as fuel are gradually replaced by power machines using combustible gas such as natural gas as fuel. Compared with a diesel engine, the gas engine has more environment-friendly emission and relatively lower cost, but the gas engine has slower dynamic response due to different fuel characteristics, and particularly in drilling power and island loading occasions, the rotating speed of the gas engine is reduced too much due to sudden loading, the gas engine cannot recover the rated rotating speed quickly, and the frequency is too low to cause brake opening.

Disclosure of Invention

The invention aims to solve the problems and provides a dynamic compensation device for an engine, which effectively reduces the rotating speed reduction of the engine during sudden load, so that the engine can quickly recover the rated rotating speed and stably run.

In order to achieve the purpose, the invention adopts the following technical scheme:

the engine dynamic compensation device comprises an engine, a compensation air inlet unit, a signal acquisition unit and a control unit;

the control unit comprises an engine control unit arranged in the control cabinet and a dynamic system control unit arranged in the engine body or the control cabinet;

the signal acquisition unit comprises a rotating speed sensor arranged at the output end of the engine, a Hall sensor arranged at the free end of the engine and a timing disc;

the compensation air inlet unit comprises air inlet branch pipes arranged on each cylinder of the engine, and an electric injection valve, a pressure regulating valve, a gas filter and an electromagnetic valve are arranged on each air inlet branch pipe;

the output end of the signal acquisition unit is connected with a sensor signal unit, the output end of the sensor signal unit is connected with a dynamic system control unit, the input end of an electronic injection valve is connected with an electronic injection valve output unit, and the output end of the engine control unit is connected with an electromagnetic valve and the dynamic system control unit;

the engine control unit controls the electromagnetic valve to be opened, and the fuel gas reaches the electric injection valve of each cylinder after passing through the electromagnetic valve, the fuel gas filter and the pressure regulating valve; the dynamic system control unit obtains a required control target through the engine control unit, analyzes the running state of the engine in real time by combining the sensor signal unit, and controls the output of the electronic injection valve output unit to quickly supplement fuel when detecting that the engine is in a sudden loading working condition.

In the dynamic compensation device for the engine, the engine gear ring is arranged between the rotating speed sensor and the output end of the engine, and the rotating speed sensor is a magnetoelectric sensor and can be mounted on the engine gear ring at the output end of the engine in an induction mode.

In the dynamic compensation device for the engine, the timing disk is provided with the magnetic nails at different intervals, and the Hall sensor determines the change of the timing disk by detecting the position change of the magnetic nails.

The beneficial effects produced by adopting the invention are as follows:

the dynamic compensation device for the engine has the characteristics of rapid dynamic response, high automation degree, convenience in operation, safety and reliability. An operator only needs to set the operation standard of the engine through the engine control unit, the dynamic system control unit automatically controls output according to the operation state of the engine, and the dynamic response of the engine is effectively improved on the premise of ensuring the safe operation of the engine.

Drawings

FIG. 1 is a schematic structural diagram of a compensated air intake unit of the present invention;

FIG. 2 is a schematic structural diagram of a signal acquisition unit according to the present invention;

FIG. 3 is a schematic diagram of a control relationship structure according to the present invention;

description of reference numerals: 10-engine, 11-electric injection valve, 12-air inlet branch pipe, 13-pressure regulating valve, 14-gas filter, 15-electromagnetic valve, 20-rotating speed sensor, 21-engine gear ring, 22-Hall sensor, 23-timing disk, 30-dynamic system control unit, 31-engine control unit, 32-sensor signal unit and 33-electric injection valve output unit.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, 2 and 3, the invention provides an engine dynamic compensation device, which comprises an engine 10, a compensation air inlet unit, a signal acquisition unit and a control unit;

the control unit comprises an engine control unit 31 arranged in the control cabinet and a dynamic system control unit 30 arranged in the engine body or the control cabinet of the engine 10;

the signal acquisition unit comprises a rotating speed sensor 20 arranged at the output end of the engine 10, a Hall sensor 22 arranged at the free end of the engine 10 and a timing disc 23;

the compensation air inlet unit comprises air inlet branch pipes 12 arranged in each cylinder of the engine 10, wherein an electric injection valve 11, a pressure regulating valve 13, a gas filter 14 and an electromagnetic valve 15 are arranged on the air inlet branch pipes 12;

the output end of the signal acquisition unit is connected with a sensor signal unit 32, the output end of the sensor signal unit 32 is connected with a dynamic system control unit 30, the input end of the electronic injection valve 11 is connected with an electronic injection valve output unit 33, and the output end of the engine control unit 31 is connected with the electromagnetic valve 15 and the dynamic system control unit 30;

the engine control unit 31 controls the electromagnetic valve 15 to open, and the fuel gas reaches the electric injection valve 11 of each cylinder after passing through the electromagnetic valve 15, the fuel gas filter 14 and the pressure regulating valve 13; the dynamic system control unit 30 obtains a required control target through the engine control unit 31, analyzes the running state of the engine in real time by combining the sensor signal unit 32, and controls the output of the electronic fuel injection valve output unit 33 to quickly supplement fuel when detecting that the engine is in a sudden loading working condition.

An engine gear ring 21 is further arranged between the rotating speed sensor 20 and the output end of the engine, and the rotating speed sensor 20 is a magnetoelectric sensor and can be used for sensing the engine gear ring 21 arranged at the output end of the engine 10.

The timing disk 23 is provided with magnetic nails at different intervals, and the Hall sensor 22 determines the change of the timing disk 23 by detecting the position change of the magnetic nails.

The invention has the advantages that: the dynamic compensation device for the engine has the characteristics of rapid dynamic response, high automation degree, convenience in operation, safety and reliability. An operator only needs to set the operation standard of the engine through the engine control unit (31), the dynamic system control unit (30) automatically controls output according to the operation state of the engine, and the dynamic response of the engine is effectively improved on the premise of ensuring the safe operation of the engine.

The working process of the invention is as follows: when the engine works normally, the engine control unit (31) controls the electromagnetic valve (15) to be opened, and fuel gas reaches the electric injection valve (11) of each cylinder after passing through the electromagnetic valve (15), the fuel gas filter (14) and the pressure regulating valve (13). The dynamic system control unit (30) obtains a required control target through the engine control unit (31), analyzes the running state of the engine in real time by combining the sensor signal unit (32), and controls the output of the electronic injection valve output unit (33) when the engine is detected to be in a sudden load working condition, so that fuel gas enters each cylinder of the engine, fuel is quickly supplemented, the dynamic performance of the engine is improved, the rotating speed reduction of the engine is effectively reduced, the engine can quickly recover the rated rotating speed, and the engine can stably run.

The foregoing is a more detailed description of the invention that is presented in connection with specific embodiments, which are not intended to limit the invention to the particular embodiments described herein. For a person skilled in the art to which the invention pertains, several equivalent alternatives or obvious modifications, all of which have the same properties or uses, without departing from the inventive concept, should be considered as falling within the scope of the patent protection of the invention, as determined by the claims filed.