CN101469620A - Protecting method for diesel pressure booster - Google Patents
Protecting method for diesel pressure booster Download PDFInfo
- Publication number
- CN101469620A CN101469620A CNA2007101591668A CN200710159166A CN101469620A CN 101469620 A CN101469620 A CN 101469620A CN A2007101591668 A CNA2007101591668 A CN A2007101591668A CN 200710159166 A CN200710159166 A CN 200710159166A CN 101469620 A CN101469620 A CN 101469620A
- Authority
- CN
- China
- Prior art keywords
- diesel
- diesel engine
- pressure booster
- pressure
- oil pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention discloses a diesel pressure booster protection method, which includes the following steps: select specific diesel revolution value according to technical parameter of diesel of particular model and the pressure booster, make assignment table, calculate corresponding Cn1 and Cn2 by interpolation in the assignment table according to measured rotate speed n at real time; compare front engine oil pressure value Pn with critical quantity Cn1 and Cn2 of corresponding rotate speed, and output alarm and halt signal according to compared result to realize monitor at the curve dynamic state of inlet pressure in the pressure booster lubricate loop at real time. The invention is secure and reliable, and improves service life of the pressure booster.
Description
Technical field
The invention belongs to Diesel Engine Technique Field, relate in particular to a kind of protecting method for diesel pressure booster.
Background technique
Diesel pressure booster is normally realized lubricating by the throttling import of the engine oil pressure of diesel engine end directly being introduced pressurized machine machine oil loop.Yet under the more situation of machine oil impurity, the throttling import is blocked easily, thereby the pressurized machine bearing is burnt.For fear of the generation of this situation, between terminal engine oil pressure of diesel engine and the throttling import of pressurized machine machine oil loop, installed filter cleaner additional, allow machine oil from the diesel engine end through entering pressurized machine machine oil loop after the filtering again.But through long filtering accumulation, the resistance of filter cleaner can increase gradually, might cause pressurized machine bearing oil lubricating underpressure equally and burns.And the rotating speed of diesel engine is high more, and the rotating speed of pressurized machine increases thereupon, and oil pressure further reduces with temperature, and this danger is also just big more.
Summary of the invention
Purpose of the present invention overcomes the deficiency of above-mentioned prior art exactly, and a kind of safe and reliable protecting method for diesel pressure booster is provided.
The objective of the invention is existing like this: a kind of protecting method for diesel pressure booster, take the following step:
(1) according to the diesel engine of concrete model and the technical parameter of pressurized machine thereof, chooses concrete diesel engine revolution value, make the assignment table, the engine oil pressure before the throttle valve in the pressurized machine machine oil loop is reported to the police and shut down critical value Cn1 and Cn2 assignment (Cn1〉Cn2);
(2) start the diesel pressure booster protective gear;
(3) in the diesel engine operation process, constantly detect engine oil pressure value Pn before diesel engine speed n and the throttle valve;
(4), go out corresponding Cn1 and Cn2 in assignment table neutral line interpolation calculation according to the real-time rotation speed n of measuring;
(5) engine oil pressure value Pn before the throttle valve is compared with the critical value Cn1 of corresponding rotating speed;
(6) as Pn〉during Cn1, return step (3);
(7) work as Cn1〉Pn〉Cn2, by the analog amount output alarm, return step (3);
(8) when Pn＜Cn2, diesel engine is shut down.
Technological scheme of the present invention is incorporated into diesel electric-controlled device with the pressure signal before the throttle valve in the pressurized machine lubricating loop, realizes the curve dynamic real-time monitoring to inlet pressure in the pressurized machine lubricating loop.No matter under which kind of rotating speed, in case this pressure less than the curve controlled scope, diesel engine can be reported to the police and shut down automatically, thereby has realized the reliably protecting to pressurized machine.This method contains the switching value input function, this protective gear short circuit can be prevented the unnecessary shutdown that the oil pressure sensor fault causes; This method contains the output function of analog amount, when oil pressure reaches alarm pressure, carries out manual reduction of speed and manual shut-down with alarm caution driver, thereby reduces autostop number of times under high rotating speed and the high load, the working life of having improved pressurized machine.
Description of drawings
Accompanying drawing 1 is for realizing the diesel pressure booster protective gear schematic block diagram of the embodiment of the invention.
Accompanying drawing 2 is protecting method for diesel pressure booster embodiment's of the present invention FB(flow block).
Embodiment
Referring to Fig. 1; the diesel pressure booster protective gear of the embodiment of the invention; its relatively ECU (Electrical Control Unit) model of adopting German Hai Ci Man to produce be the 32-bit microprocessor of MVC01-10/20; the diesel engine speed sensor adopts the HIA31-46 speed probe of Germany; be installed in the crankshaft gear side of diesel engine, its output line is received on the microprocessor rotating speed input end.Pressure transducer adopts the DS001-10 pressure transducer of Germany, is installed between the filter cleaner and throttle valve in the diesel pressure booster lubricating loop, and its output line is received on the pressurized machine engine oil pressure input end of microprocessor.The warning output terminal of microprocessor is connected to warning light.The shutdown output terminal of microprocessor is connected to diesel engine and shuts down on the drive unit solenoid valve.
Referring to Fig. 2 in detail, the concrete steps of the protecting method for diesel pressure booster of the embodiment of the invention are described in detail.
At first in the frame 1 of flow chart; according to the diesel engine of concrete model and the technical parameter of pressurized machine thereof among Fig. 1; chosen 400,600,800,959,960,1040, totally 6 concrete diesel engine speed points; come the engine oil pressure before the throttle valve in the pressurized machine machine oil loop is reported to the police and shutdown critical value curve C n1 and Cn2 assignment, it is write in the microprocessor.That is: when diesel engine speed n was less than 960r/min, it is on duty with 0.9 that Cn1 presses the minimum engine oil pressure of diesel engine, and Cn2 multiply by 0.8 by the minimum engine oil pressure of diesel engine; Diesel engine speed n is during more than or equal to 960r/min, and Cn1 multiply by 1.1 by the oil pressure of pressurized machine specification requirement regulation, the oil pressure that Cn2 stipulates by the requirement of pressurized machine specification.Draw following assignment table like this:
Rotating speed (r/min) 400 600 800 959 960 1040
Alarm pressure (bar) 0.9 0.9 0.9 0.9 4.4 4.4
Shut down pressure (bar) 0.8 0.8 0.8 0.8 4.0 4.0
Before diesel engine starting, apply the switching value input to microprocessor, enter the frame 2 in the flow chart, start the diesel pressure booster defence program.Enter frame 3 then, in the diesel engine operation process, constantly detect the real-time rotation speed n of diesel engine, be sent to the rotating speed input end of microprocessor by velocity transducer HIA31-46; After constantly detecting filter cleaner by pressure transducer DS001-10, the real-time engine oil pressure value Pn before the throttle valve, be sent to the engine oil pressure input end of microprocessor.Enter frame 4 then, microprocessor goes out Cn1 and Cn2 according to rotation speed n and frame 1 usefulness interpolation calculation.Program enters comparison decision block 5 then, and when diesel engine speed was n, engine oil pressure value Pn and warning critical value Cn1 compared before the throttle valve: as Pn〉during Cn1, return detection block 3; When Pn＜Cn1, program enters alert box 6, and microprocessor warning output terminal output alarm signal drives the warning light flicker.Program enters comparison decision block 7 then, with Pn with shut down critical value Cn2 relatively: as Pn〉during Cn2, program is returned detection block 3; When Pn＜Cn2, program enters shuts down frame 8, and microprocessor is shut down output terminal and exported stopping signal to solenoid valve, and diesel engine is shut down.
Claims (1)
1, a kind of protecting method for diesel pressure booster is characterized in that taking the following step:
(1) according to the technical parameter of diesel engine and pressurized machine thereof, choose concrete diesel engine revolution value, make the assignment table, the engine oil pressure before the throttle valve in the pressurized machine machine oil loop is reported to the police and shut down critical value Cn1 and Cn2 assignment (Cn1〉Cn2);
(2) start the diesel pressure booster protective gear;
(3) in the diesel engine operation process, constantly detect engine oil pressure value Pn before diesel engine speed n and the throttle valve;
(4), go out corresponding Cn1 and Cn2 in assignment table neutral line interpolation calculation according to the real-time rotation speed n of measuring;
(5) engine oil pressure value Pn before the throttle valve is compared with the critical value Cn1 of corresponding rotating speed;
(6) as Pn〉during Cn1, return step (3);
(7) work as Cn1〉Pn〉Cn2, by the analog amount output alarm, return step (3);
(8) when Pn＜Cn2, diesel engine is shut down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101591668A CN101469620A (en) | 2007-12-25 | 2007-12-25 | Protecting method for diesel pressure booster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101591668A CN101469620A (en) | 2007-12-25 | 2007-12-25 | Protecting method for diesel pressure booster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101469620A true CN101469620A (en) | 2009-07-01 |
Family
ID=40827392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101591668A Pending CN101469620A (en) | 2007-12-25 | 2007-12-25 | Protecting method for diesel pressure booster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101469620A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195535A (en) * | 2013-04-18 | 2013-07-10 | 河源职业技术学院 | Method and system for detecting automobile engine lubricating system state |
| CN104234824A (en) * | 2014-09-24 | 2014-12-24 | 南车成都机车车辆有限公司 | Internal combustion locomotive diesel engine turbocharger oil supply system and control method of internal combustion locomotive diesel engine turbocharger oil supply system |
-
2007
- 2007-12-25 CN CNA2007101591668A patent/CN101469620A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195535A (en) * | 2013-04-18 | 2013-07-10 | 河源职业技术学院 | Method and system for detecting automobile engine lubricating system state |
| CN103195535B (en) * | 2013-04-18 | 2015-07-15 | 河源职业技术学院 | Method and system for detecting automobile engine lubricating system state |
| CN104234824A (en) * | 2014-09-24 | 2014-12-24 | 南车成都机车车辆有限公司 | Internal combustion locomotive diesel engine turbocharger oil supply system and control method of internal combustion locomotive diesel engine turbocharger oil supply system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202381670U (en) | Lubricating and cooling system for gear box of wind turbines | |
| CN111335981A (en) | Engine oil pressure alarm method and system | |
| US6504474B1 (en) | Method and apparatus for detecting a restricted or bypassed transmission oil filter | |
| CN201367928Y (en) | Automotive petrol engine alarming protection system based on engine oil pressure | |
| CN107956539B (en) | Engine auxiliary lubrication control method and device | |
| CN111911262B (en) | Engine oil pressure control method and corresponding engine protection device | |
| CN105275690B (en) | Fuel filter abnormal detector | |
| CN101629526B (en) | Method for diagnosing and processing fault of throttle position sensor | |
| CN107975396B (en) | Engine auxiliary lubrication control method and device | |
| KR20190042849A (en) | Method for Bearing Sticking Prevention and Vehicle thereof | |
| CN104153892B (en) | A kind of integrated diesel machine by peripheral control unit pressure cylinder inside brake | |
| CN102991502B (en) | A kind of method for controlling engine start/stop system | |
| CN201623458U (en) | Steam turbine overspeed protector by on-line automatic detection abnormal vibration | |
| CN103306330A (en) | Method and device for controlling idle speed of engine, as well as excavator and loader | |
| CN101469620A (en) | Protecting method for diesel pressure booster | |
| CN107965494A (en) | A kind of rotary vane type steering gear failure detector and method | |
| CN103954328A (en) | Method and device for monitoring oil consumption situation of diesel engine | |
| DK178428B1 (en) | Method and device for controlling the supply of lubricant to the cylinder surface of a piston in a piston motor with reciprocating pistons | |
| CN202447314U (en) | Automatic safety protector of high-pressure cleaner | |
| CN105673194A (en) | Fault diagnosis system and method for engine air inlet relief valve blockage | |
| CN102777273A (en) | Intelligent comprehensive monitoring and controlling system for moving components of diesel generator set | |
| CN104121095A (en) | Fault diagnosis method for rotating speed sensor | |
| CN217586312U (en) | Slow-speed barring self-detection system used before starting of diesel engine | |
| CN205089458U (en) | Novel diesel engine control system | |
| CN109780313B (en) | Automatic control system for indicator valve of multi-cylinder diesel engine for ship |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090701 |