CN110454295A - A kind of piston cooling nozzle ejection control method - Google Patents
A kind of piston cooling nozzle ejection control method Download PDFInfo
- Publication number
- CN110454295A CN110454295A CN201910680470.XA CN201910680470A CN110454295A CN 110454295 A CN110454295 A CN 110454295A CN 201910680470 A CN201910680470 A CN 201910680470A CN 110454295 A CN110454295 A CN 110454295A
- Authority
- CN
- China
- Prior art keywords
- engine
- cooling nozzle
- piston cooling
- piston
- 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
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/06—Arrangements for cooling pistons
- F01P3/08—Cooling of piston exterior only, e.g. by jets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/16—Pistons having cooling means
- F02F3/20—Pistons having cooling means the means being a fluid flowing through or along piston
- F02F3/22—Pistons having cooling means the means being a fluid flowing through or along piston the fluid being liquid
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a kind of piston cooling nozzle ejection control methods, belong to technical field of engine control.Present invention preserves existing according to engine oil pressure, revolving speed and load control system for the cooling switch that piston cooling nozzle is just reasonably controlled with engine consumption of piston in order to balance; and further contemplate small load condition also and have the risk that pinking and pre-ignition occurs; the control of pinking and pre-ignition is increased in control method; keep this method more reasonable, achievees the effect that reduce discharge and protection engine.
Description
Technical field
The invention belongs to technical field of engine control.
Background technique
Engine lubrication system plays a part of providing lubrication and protection for each system oil device of engine, and piston is cooling
Nozzle, which is then taken on, to be provided lubricating oil for piston and is cooled down, and ensures the important task that piston operates normally.Piston in the prior art
Cooling nozzles are usually placed on cylinder body main oil gallery, are lubricated with main bearing journal and are shared main oil gallery, and structure generallys use steel ball
Add spring ball valve switch mechanism or plunger add spring plunger switch mechanism controls piston cooling nozzle on-off.When main oil
When oil pressure in road reaches piston cooling nozzle cracking pressure, ball valve mechanism or plunger mechanism are opened, and lubricating oil passes through piston
Cooling nozzles are sprayed from main oil gallery, cooling piston.It, cannot be according to the actual cooling of piston since cracking pressure is definite value
Demand is controlled, and the waste of oil pressure oil mass has been inevitably resulted in.Excessive oil pressure makes ball valve or plunger mechanism component
Bigger impact and stress is born, abrasion is caused to accelerate, and with the abrasion of ball valve or plunger mechanism, piston cooling nozzle
It opens, closing pressure will appear wide fluctuations, the risk for bringing the cooling deficiency of piston to damage.Engine with supercharger is from a high speed
Big load plunge the load into low speed when piston cooling nozzle can close, but due to intake air temperature height, be easy to happen pinking and morning
Combustion, if piston is unable to get effective cooling, just there is overheat risk.
Current piston cooling nozzle is controlled using engine oil pressure, i.e., by built-in initial tension of spring that steel ball is close
It is enclosed in oil inlet port, when engine oil pressure is greater than the pretightning force of spring, steel ball compressed spring, lubricating oil is by cooling nozzles to work
Capable injection is filled in, since the temperature of lubricating oil is lower than the temperature of piston, plays the effect of cooling piston.Piston needs to cool down
The conditioned area that big load is prone to pinking is occurred mainly in, which is generally also high oil pressure operating condition.But it is suddenly received in vehicle
The middle small load condition of throttle also have occur pinking and pre-ignition risk, pinking at this time occur whether and engine oil pressure there is no straight
The connection connect, thus simple being adjusted by engine oil pressure the type of cooling of piston is often brought to engine it is very much
Negative effect, uncertain to reach ideal desired effect, the fuel oil consumption for eventually leading to vehicle increases.In consideration of it, being urgently directed to
Above-mentioned technical problem advanced optimizes the control strategy of cooling nozzles in the prior art.
Summary of the invention
Engine piston cooling nozzle, which is taken on, provides the important task that lubricating oil is cooling, and guarantee piston operates normally for piston.
But if engine still maintains piston cooling nozzle opening in slow-speed of revolution underload, oil pressure waste will result in, and then lead
Engine consumption is caused to increase.Therefore piston cooling is taken into account just to need reasonably to control piston cooling nozzle with engine consumption
Switch.The present invention provides a kind of piston cooling nozzle ejection control methods in order to solve this problem, the specific steps are as follows:
1) after engine opens machine, piston cooling nozzle default is closed；
2) whether ECU real-time judge engine oil pressure reaches lower safety limit；
3) then piston cooling nozzle continues to remain turned-off when engine oil pressure is not up to lower safety limit；When engine oil pressure reaches peace
When full lower limit, then ECU continues to look into piston cooling nozzle control MAP according to current engine speed and load and tentatively judge
The open and close state of piston cooling nozzle；
4) if the preliminary judging result tabled look-up is piston cooling nozzle open state, piston cooling nozzle is opened, and return
Return step 2)；If the preliminary judging result tabled look-up is piston cooling nozzle closed state, continue to judge that engine whether there is
Pinking；
5) if there are pinkings for engine, piston cooling nozzle, and return step 2 are opened)；If there is no quick-fried for engine
Shake, then continue to determine whether that there are pre-ignitions；
6) if there are pre-ignitions for engine, piston cooling nozzle, and return step 2 are opened)；If there is no early for engine
It fires, then direct return step 2)；
7) tail-off then closure piston cooling nozzles.
Beneficial effects of the present invention:
In the prior art, piston cooling nozzle generallys use the logical of mechanical pressure switch mechanism controls piston cooling nozzle
It is disconnected, automatically controlled piston cooling nozzle is used in existing improved plan, but usually only according to revolving speed and load control system cooling nozzles
On-off.The present invention program combination engine rig test data propose and consider revolving speed, load, engine oil pressure, pinking and pre-ignition
Piston cooling nozzle on-off Intelligent Control Strategy including the factors such as state.The control strategy can guarantee engine in poles such as pinkings
End operating condition lower piston is cooled down.
Detailed description of the invention
Fig. 1 the method for the present invention logic diagram.
Specific embodiment
Embodiment 1
1) after engine opens machine, piston cooling nozzle default is closed；So that main oil gallery oil pressure is established as early as possible.
2) whether ECU real-time judge engine oil pressure reaches lower safety limit；The premise of security implementation of the present invention is lubricating oil pump
Supply capability is able to satisfy fuel feeding demand of the engine under any operating condition.Under engine failure state, if engine oil pressure is low
In lower safety limit, piston cooling nozzle will not be opened, guarantees the lubrication needs of engine first.
3) then piston cooling nozzle continues to remain turned-off when engine oil pressure is not up to lower safety limit；When engine oil pressure reaches peace
When full lower limit, then ECU continues to look into piston cooling nozzle control MAP according to current engine speed and load and tentatively judge
The open and close state of piston cooling nozzle；It is respectively engine speed and load that piston cooling nozzle, which controls MAP transverse and longitudinal coordinate,.
The MAP is by Experimental Calibration, and cooling nozzles are closed when engine is in low speed Smaller load under normal conditions, is in the big load of high speed
When piston cooling nozzle open.
4) if the preliminary judging result tabled look-up is piston cooling nozzle open state, piston cooling nozzle is opened, and return
Return step 2)；If the preliminary judging result tabled look-up is piston cooling nozzle closed state, continue to judge that engine whether there is
Pinking；
5) if there are pinkings for engine, piston cooling nozzle, and return step 2 are opened)；If there is no quick-fried for engine
Shake, then continue to determine whether that there are pre-ignitions；
6) if there are pre-ignitions for engine, piston cooling nozzle, and return step 2 are opened)；If there is no early for engine
It fires, then direct return step 2)；
7) tail-off then closure piston cooling nozzles.
Claims (1)
1. a kind of piston cooling nozzle ejection control method, the specific steps are as follows:
1) after engine opens machine, piston cooling nozzle default is closed；
2) whether ECU real-time judge engine oil pressure reaches lower safety limit；
3) then piston cooling nozzle continues to remain turned-off when engine oil pressure is not up to lower safety limit；When engine oil pressure reaches under safety
In limited time, then ECU continues to look into piston cooling nozzle control MAP according to current engine speed and load and tentatively to judge piston
The open and close state of cooling nozzles；
4) if the preliminary judging result tabled look-up is piston cooling nozzle open state, piston cooling nozzle is opened, and return to step
It is rapid 2)；If the preliminary judging result tabled look-up is piston cooling nozzle closed state, continue to judge engine with the presence or absence of pinking；
5) if there are pinkings for engine, piston cooling nozzle, and return step 2 are opened)；If pinking is not present in engine,
Continue to determine whether that there are pre-ignitions；
6) if there are pre-ignitions for engine, piston cooling nozzle, and return step 2 are opened)；If pre-ignition is not present in engine,
Direct return step 2)；
7) tail-off then closure piston cooling nozzles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910680470.XA CN110454295A (en) | 2019-07-26 | 2019-07-26 | A kind of piston cooling nozzle ejection control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910680470.XA CN110454295A (en) | 2019-07-26 | 2019-07-26 | A kind of piston cooling nozzle ejection control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110454295A true CN110454295A (en) | 2019-11-15 |
Family
ID=68483517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910680470.XA Pending CN110454295A (en) | 2019-07-26 | 2019-07-26 | A kind of piston cooling nozzle ejection control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110454295A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734520A (en) * | 2020-06-24 | 2020-10-02 | 中国第一汽车股份有限公司 | Piston cooling nozzle control method and system after engine shutdown and vehicle |
| CN111734519A (en) * | 2020-06-24 | 2020-10-02 | 中国第一汽车股份有限公司 | Active protection method and system for piston cooling nozzle |
| CN111878214A (en) * | 2020-06-30 | 2020-11-03 | 东风汽车集团有限公司 | Self-adaptive control method and system for piston cooling nozzle |
| CN113074041A (en) * | 2021-04-08 | 2021-07-06 | 浙江吉利控股集团有限公司 | Electric control piston cooling nozzle control method and system, automobile and readable storage medium |
| CN113982738A (en) * | 2021-11-23 | 2022-01-28 | 中国第一汽车股份有限公司 | Control method, device and system for piston cooling nozzle and electronic equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101963079A (en) * | 2010-10-31 | 2011-02-02 | 无锡开普动力有限公司 | Engine oil filter component for diesel engine |
| CN102418583A (en) * | 2010-08-31 | 2012-04-18 | 福特环球技术公司 | Approach for variable pressure oil injection |
| CN106481429A (en) * | 2015-08-28 | 2017-03-08 | 长城汽车股份有限公司 | A kind of piston cooling nozzle control method and control system |
-
2019
- 2019-07-26 CN CN201910680470.XA patent/CN110454295A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418583A (en) * | 2010-08-31 | 2012-04-18 | 福特环球技术公司 | Approach for variable pressure oil injection |
| CN101963079A (en) * | 2010-10-31 | 2011-02-02 | 无锡开普动力有限公司 | Engine oil filter component for diesel engine |
| CN106481429A (en) * | 2015-08-28 | 2017-03-08 | 长城汽车股份有限公司 | A kind of piston cooling nozzle control method and control system |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734520A (en) * | 2020-06-24 | 2020-10-02 | 中国第一汽车股份有限公司 | Piston cooling nozzle control method and system after engine shutdown and vehicle |
| CN111734519A (en) * | 2020-06-24 | 2020-10-02 | 中国第一汽车股份有限公司 | Active protection method and system for piston cooling nozzle |
| CN111734520B (en) * | 2020-06-24 | 2021-07-20 | 中国第一汽车股份有限公司 | Piston cooling nozzle control method and system after engine shutdown and vehicle |
| CN111734519B (en) * | 2020-06-24 | 2021-09-17 | 中国第一汽车股份有限公司 | Active protection method and system for piston cooling nozzle |
| CN111878214A (en) * | 2020-06-30 | 2020-11-03 | 东风汽车集团有限公司 | Self-adaptive control method and system for piston cooling nozzle |
| CN111878214B (en) * | 2020-06-30 | 2021-09-17 | 东风汽车集团有限公司 | Self-adaptive control method and system for piston cooling nozzle |
| CN113074041A (en) * | 2021-04-08 | 2021-07-06 | 浙江吉利控股集团有限公司 | Electric control piston cooling nozzle control method and system, automobile and readable storage medium |
| CN113982738A (en) * | 2021-11-23 | 2022-01-28 | 中国第一汽车股份有限公司 | Control method, device and system for piston cooling nozzle and electronic equipment |
| CN113982738B (en) * | 2021-11-23 | 2022-11-18 | 中国第一汽车股份有限公司 | Control method, device and system for piston cooling nozzle and electronic equipment |
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Application publication date: 20191115 |