CN110080888A - A kind of disconnected cylinder control method of spacing paddle diesel main engine - Google Patents
A kind of disconnected cylinder control method of spacing paddle diesel main engine Download PDFInfo
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- CN110080888A CN110080888A CN201910203961.5A CN201910203961A CN110080888A CN 110080888 A CN110080888 A CN 110080888A CN 201910203961 A CN201910203961 A CN 201910203961A CN 110080888 A CN110080888 A CN 110080888A
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- main engine
- diesel main
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- speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D17/00—Controlling engines by cutting out individual cylinders; Rendering engines inoperative or idling
- F02D17/02—Cutting-out
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The purpose of the present invention is to provide a kind of disconnected cylinder control method of spacing paddle diesel main engine, it is under steady state condition under diesel main engine peak load speed characteristics restrictive curve to be variable disconnected cylinder working region.Main unit load speed characteristic curve under diesel main engine peak load characteristic curve, spacing paddle characteristic curve and each load is obtained by experimental calibration to be input in monitoring system, and the operating point of z-type propulsion can be obtained by the diesel main engine load speed characteristic curve intersection point under spacing paddle characteristic curve and each load.When load changes, monitoring system judges whether diesel main engine and propeller power match, if mismatching, monitoring system judges the size relation of diesel main engine power and spacing paddle power, decide whether to send oil-break and instruct to make partial cylinders stop oil spout to injection system, host enters disconnected cylinder mode, works under the load speed characteristic operating condition that current spacing paddle power matches, and achievees the purpose that oil-saving discharging-reducing and guarantees z-type propulsion.
Description
Technical field
The present invention relates to a kind of marine propuision system host control methods.
Background technique
Diesel engine is exported as the major impetus of ship, through gearbox speed reduction when operation, makes its revolving speed and revolution speed of propeller
After matching, power is transmitted to by propeller by shafting, so that propeller is generated axial thrust, hull is transmitted to by shafting, to push away
Dynamic ship movement.When diesel main engine institute's on-load reduces, (for marine diesel oil host, it is negative that spacing paddle belongs to its institute's band
Lotus.Such as: due to the reduction of the draft of spacing paddle, the load torque generated can also reduce), control system can be by subtracting
The distributive value of small each cylinder reduces its output power, and the fuel oil sprayed into each cylinder still cannot utilize effectively.Petroleum resources
Shortage has become global common issue, and with the rapid development of our country's economy, the consumption of petroleum resources increasingly increases, according to system
Meter, 5.88 hundred million tons of China's oil Apparent con- sumption in 2017 occupy the whole world second, growth rate reaches 5.9%.And ship tail gas
Emission regulation has been in III stage of Tier at present, has higher want to fuel consumption and the efficiency of combustion of boat diesel engine
It asks, it is desirable that it can be improved the fuel efficiency and economy when its work, under the purpose of oil-saving discharging-reducing, spiral when making host work
Paddle power and main engine power match.
Disconnected cylinder technology, that is, Variable Displacement Technology provides good technological means for oil-saving discharging-reducing, and essence is in engine
Work, by a series of means, such as the fuel delivery of cut-off parts cylinder, intake and exhaust, makes portion in the case where sub-load
Sub-cylinder stops working, and increases remaining cylinder rate of load condensate, makes engine operation under economical consumption of fuel operating condition, to improve fuel oil effect
Rate reduces fuel consumption.Currently, this technology is most in automotive engine applications application, text is being examined such as CN107542583A
Part (application publication date on January 5th, 2018), CN106401757A careful patent (applying for publication date on 2 15th, 2017), relate to
And it is seldom to the control method of the disconnected cylinder of marine diesel oil host.
The patent of invention of publication number CN101858259B (publication date on January 2nd, 2013) discloses a kind of for bavin
Oil machine part cylinder cylinder deactivation fuel-economizing controlling method, it is characterised in that cylinder deactivation controller passes through CAN bus automatic identification whole vehicle state, root
Judge whether to meet cylinder deactivation condition according to the three-dimensional relationship figure of revolving speed, throttle and the torque deposited in cylinder deactivation controller, carries out cylinder deactivation behaviour
Make.The invention does not need to be modified complete vehicle structure, realizes cylinder deactivation fuel-saving control using ECU software and hardware internal data.The hair
It is bright without reference to main engine power and the matched disconnected cylinder control method of propeller power.
Publication number CN107387245A's (data of publication of application on November 24th, 2017) refers to a kind of locomotive in careful invention
Diesel engine underrun part cylinder deactivation control method, it is characterised in that by diesel engine speed/fuel delivery controlling curve
Two oil mass curves-low oil mass curve and high oil mass curve are set, when fuel delivery is under low oil mass curve, entering part is stopped
Cylinder operational mode exits part deactivation mode when fuel delivery is on high oil mass curve.The technology ensure that diesel engine of locomotive is low
When load, fuel oil has been saved, has reduced carbon distribution, but without reference to the disconnected cylinder controlling party that main engine power and propeller power match
Method.
The patent document of publication number CN103256160B (publication date on May 20th, 2015) discloses a kind of cylinder of diesel engine row
The device of oil-break, specifically a kind of diesel engine fuel injecting control device.Including fuel injector control ratch, connecting rod, two four
Three-way electromagnetic valve, cylinder deactivation control volume.It is connected and disconnected from by the control ratch of the control ratch and injection pump II that control injection pump I,
It realizes whether the plunger matching parts of injection pump I is in " 0 " fuel feeding position, and then realizes the function of cylinder row's oil-break.The technology is from structure
On realize oil-saving discharging-reducing, but break cylinder control method without reference to a kind of diesel main engine of spacing paddle.
" load control system technology the answering in marine propuision system design published in " Marine engineering " (2009Vol.31)
With " in a text, describe the basic ideas of diesel engine+spacing paddle propulsion system load curtailment strategy: being started using that can characterize
One load restraining line of parameter setting of machine load, when engine operating parameter is close to this load restraining line, control system
It is automatic to reduce engine load, fluctuate engine load under load line or up and down always, without reference to a kind of diesel main engine
Disconnected cylinder control method.
Summary of the invention
The purpose of the present invention is to provide prepare band through gear-box reduction of speed from diesel main engine to determine square paddle to host and spacing paddle
Work reduces the fuel consumption of diesel main engine and improves fuel utilization ratio, increase economic efficiency, protect during steady-state operation
Hinder the disconnected cylinder control method of a kind of spacing paddle diesel main engine that spacing paddle can absorb power and main engine power matching and coordination.
The object of the present invention is achieved like this:
The disconnected cylinder control method of a kind of spacing paddle diesel main engine of the present invention, it is characterized in that: when diesel main engine reduction of speed band spacing paddle
When operation, i.e., when gear-box is executed by being separated to engagement process, diesel main engine monitoring system receives gear-box fitting control instruction
Afterwards, judge diesel main engine operating mode: if disconnected cylinder mode, then diesel main engine monitoring system issues full cylinder working and instructs to oil spout
System restores the oil spout of diesel main engine oil-break cylinder, and host enters full cylinder mode, and gear-box executes fit operation order and nibbled
It closes；If full cylinder mode, then gear-box then executes fit operation instruction and is engaged.Host Supervision System is nibbled receiving gear-box
It closes after completing feedback signal, whether within the allowable range the difference of host actual speed and setting speed is judged, if allowing model
In enclosing, then monitoring system issues disconnected cylinder working and instructs to injection system, the oil spout of injection system stop section cylinder, and host enters
Disconnected cylinder mode；When band spacing paddle carries out accelerator to diesel main engine after gear-box reduction of speed, when diesel main engine actual motion speed
Less than setting speed, Host Supervision System issues full cylinder working and instructs to injection system, restores oil-break cylinder fuel injection, make host into
Enter full cylinder mode, in the process Host Supervision System judge diesel main engine whether be under running on the lower load and actual speed with
Whether the difference of setting speed is in preset allowed band, if under the running on the lower load and actual speed and setting speed
Difference reaches in preset allowed band, then sends disconnected cylinder working and instruct to injection system, cut-off parts cylinder fuel feeding, into disconnected
Cylinder mode.
The present invention may also include:
1, it is less than diesel main engine nominal power when spacing paddle can absorb power, Host Supervision System issues disconnected cylinder working instruction
To injection system, injection system stops oil spout to diesel main engine partial cylinders, so that this PSD Partical Shut Down, diesel main engine
Into disconnected cylinder mode, and then diesel main engine work meets main engine power with spacing paddle and can absorb power phase in new operating point
Match；When the band spacing paddle work of diesel main engine institute is in full load, Host Supervision System issues full cylinder working control instruction to oil spout
System, restore diesel main engine oil-break cylinder oil spout, make diesel main engine work under full cylinder working mode, meet main engine power with
Spacing paddle can absorb power and matches.
2, when diesel main engine prepares reduction of speed band spacing paddle operation, i.e., include when gear-box is executed by being separated to engagement process
Following steps:
After the first step, diesel main engine monitoring system receive gear-box fitting control instruction, whether host work mode is judged
Otherwise enter third step if then entering second step for cylinder mode of breaking；
Second step, Host Supervision System issue full cylinder working and instruct to injection system, restore the oil spout of oil-break cylinder, host
Into full cylinder mode；
Third step, gear-box execute fit operation instruction and are engaged；
4th step, Host Supervision System receive gear-box engagement and complete after feeding back, and judge whether host actual speed reaches
To setting speed, if host reaches setting speed, enter the 5th step, otherwise original place recycles；
5th step, Host Supervision System issue disconnected cylinder working and instruct to injection system, the spray of injection system stop section cylinder
Oil, host enter disconnected cylinder mode.
3, when in host, band spacing paddle is accelerated after gear-box reduction of speed comprising the steps of:
(1) diesel main engine monitoring system judges whether the actual speed of host is less than setting speed, if actual speed is less than
Setting speed then enters step (2), and otherwise original place recycles；
(2) Host Supervision System issues full cylinder working and instructs to injection system, and injection system restores the oil spout of oil-break cylinder,
Host enters full cylinder mode Accelerating running；
(3) Host Supervision System judges the difference that whether host is in running on the lower load and actual speed is lower than setting speed
Whether within the allowable range Δ n, if host is in running on the lower load and Δ n within the allowable range, executes the 4th step, otherwise former
Ground circulation；
(4) Host Supervision System issues disconnected cylinder working and instructs to injection system, injection system stop section cylinder fuel injection, main
Machine enters disconnected cylinder mode.
4, in diesel main engine steady-state operation comprising the steps of:
A, diesel main engine peak load speed characteristic curve is obtained by experimental calibration, it is maximum when as diesel main engine operation
Load restraining line, its calculation formula isWherein, PeFor the effective power of diesel main engine output, n is diesel main engine
Revolving speed, MeFor diesel main engine effective torque；Meanwhile the characteristic curve for determining square paddle is determined by experiment, its calculation formula is Pp=
Cpn3, wherein PpPower, C are can absorb for spacing paddlepFor power coefficient, n is revolution speed of propeller；And the bavin under each load of measurement
Oily main unit load speed characteristic curve, calculation formula is the same as peak load speed characteristic curve；Above-mentioned relation curve is inputted and is supervised
In control system, z-type propulsion is obtained by the diesel main engine load speed characteristic curve intersection point under spacing paddle characteristic curve and each load
Operating point；
B, when spacing paddle load changes, monitoring system judge diesel main engine and propeller can absorb power whether
Match, original place recycles if matching；If it does not match, further judging that diesel main engine power and propeller can absorb power
Size relation: if Pe> Pp, i.e. power of the diesel main engine with the operating condition output under the load speed characteristic curve is greater than spacing paddle
Absorbable power, then enter step c；If Pe< Pp, i.e., diesel main engine is with the operating condition output under the load speed characteristic curve
Power is less than spacing paddle and can absorb power, then enters step d；
C, monitoring system issues oil-break and instructs to injection system, stops oil spout to partial cylinders, diesel main engine enters disconnected cylinder
Operating mode；
D, monitoring system issues recovery fuel feeding and instructs to injection system, restores the oil spout of oil-break cylinder, and diesel main engine enters
Full cylinder working mode；
E, return step b.
Present invention has an advantage that the present invention, which prepares band through gear-box reduction of speed from diesel main engine, determines square paddle to host and spacing
Paddle works during steady-state operation, reduces the fuel consumption of diesel main engine and improves fuel utilization ratio, improves economy
Benefit has ensured that spacing paddle can absorb the matching and coordination of power and main engine power.
Detailed description of the invention
Fig. 1 is that gear-box is executed by being separated to the disconnected cylinder control method flow diagram of engagement process diesel main engine；
Fig. 2 is for diesel main engine with the disconnected cylinder method flow block diagram of spacing paddle Accelerating running after gear-box reduction of speed；
Fig. 3 is diesel main engine steady-state operation load characteristic curve and propeller chart；
Fig. 4 is the flow diagram of the disconnected cylinder control method of diesel main engine steady-state operation.
Specific embodiment
It illustrates with reference to the accompanying drawing and the present invention is described in more detail:
In conjunction with Fig. 1-4, when diesel main engine prepares reduction of speed band spacing paddle operation, i.e., gear-box is executed by being separated to the present invention
When engagement process (diesel main engine is by the unloaded dynamic process to underloading), diesel main engine monitoring system receives gear-box fitting control
After instruction, judge diesel main engine operating mode: 1) if disconnected cylinder mode, then diesel main engine monitoring system first issues full cylinder working and refers to
It enables to injection system, restores the oil spout of diesel main engine oil-break cylinder, host enters full cylinder mode, and at this moment gear-box executes fitting again
Operational order is engaged；2) if full cylinder mode, then gear-box then executes fit operation instruction and is engaged.Host monitor system
System judges whether the difference of host actual speed and setting speed is allowing model after receiving gear-box engagement and completing feedback signal
In enclosing, if within the allowable range, monitoring system issues disconnected cylinder working and instructs to injection system, injection system stop section cylinder
Oil spout, host enters disconnected cylinder mode；When (diesel engine is still for band spacing paddle progress accelerator after gear-box reduction of speed for diesel main engine
Work is under disconnected cylinder mode), when diesel main engine actual motion speed is less than setting speed, Host Supervision System issues full cylinder working
It instructs to injection system, restores oil-break cylinder fuel injection, host is made to enter full cylinder mode, Host Supervision System judges in the process
Diesel main engine whether be under running on the lower load and the difference of actual speed and setting speed whether within the allowable range, if being in
Under running on the lower load and the difference of actual speed and setting speed reaches in allowed band, then sends disconnected cylinder working and instruct to oil spout
System, cut-off parts cylinder fuel feeding, into disconnected cylinder mode.
When the work operation of Diesel Driven spacing paddle, under a certain rated engine speed, the nominal power P of diesel engine is neededeDeng
Power P is can absorb in spacing paddlep.If diesel engine is in a certain rated engine speed v operation, spacing paddle can absorb power and diesel engine
Nominal power matches just, and diesel engine work is in a certain matching operating point, i.e. diesel main engine and the work of spacing paddle is in steady state condition
Under.
It is variable disconnected cylinder working region under diesel main engine peak load restrictive curve.When diesel main engine institute band spacing paddle can be inhaled
When receiving power less than a certain declared working condition point, i.e., spacing paddle can absorb power less than diesel main engine nominal power, to meet diesel oil
Main engine power and spacing paddle can absorb the matching of power, and Host Supervision System issues control instruction to diesel main engine part gas at this time
Cylinder stops oil spout, so that this PSD Partical Shut Down, diesel main engine enters disconnected cylinder mode, so that diesel main engine work is new
Operating point meets main engine power and matches with the absorbable power of spacing paddle；When diesel main engine institute band spacing paddle works in full load
When, it is can absorb the matching of power to meet diesel main engine power and spacing paddle, Host Supervision System issues instructions to oil spout at this time
System, restore diesel main engine oil-break cylinder oil spout, make diesel main engine work under full cylinder working mode, meet main engine power with
Spacing paddle can absorb power and matches.
As shown in Fig. 1, the disconnected cylinder control method of a kind of spacing paddle diesel main engine prepares reduction of speed band spacing paddle in diesel main engine
When operation, i.e., when gear-box is executed by being separated to engagement process (diesel main engine is by the unloaded dynamic process to underloading), include with
Lower step:
Whether the first step judges host work mode after diesel main engine monitoring system receives gear-box fitting control instruction
Otherwise enter third step if then entering second step for cylinder mode of breaking.
Second step, Host Supervision System issue full cylinder working and instruct to injection system, restore the oil spout of oil-break cylinder, host
Into full cylinder mode.
Third step, gear-box execute fit operation instruction and are engaged.
4th step, Host Supervision System receive gear-box engagement and complete after feeding back, and judge host actual speed nfact1It is
It is no to reach setting speed norder1, the 5th step is entered if engine speed reaches setting speed, otherwise original place recycles.
5th step, Host Supervision System issue disconnected cylinder working and instruct to injection system, the spray of injection system stop section cylinder
Oil, host enter disconnected cylinder mode.
As shown in Fig. 2, the disconnected cylinder control method of a kind of spacing paddle diesel main engine, in host with spacing after gear-box reduction of speed
When paddle is accelerated comprising the steps of:
The first step, diesel main engine monitoring system judge the actual speed n of hostfact2Whether setting speed n is less thanorder2If
Actual speed nfact2Less than setting speed norder2Then enter second step, otherwise original place recycles.
Second step, Host Supervision System issue full cylinder working and instruct to injection system, and injection system restores oil-break cylinder
Oil spout, host enter full cylinder mode Accelerating running.
Third step, Host Supervision System judge whether host is in running on the lower load and actual speed nfact2With setting speed
norder2Difference DELTA n2Whether within the allowable range, if host is in running on the lower load and difference DELTA n2Within the allowable range, then
The 4th step is executed, otherwise original place recycles.
4th step, Host Supervision System issue disconnected cylinder working and instruct to injection system, the spray of injection system stop section cylinder
Oil, host enter disconnected cylinder mode.
As shown in attached drawing 3,4, a kind of disconnected cylinder control method of spacing paddle diesel main engine, in diesel main engine steady-state operation, packet
Containing following steps:
The first step obtains diesel main engine peak load characteristic curve 1 by experimental calibration, as peak load restraining line,
It is below variable disconnected cylinder working region, its calculation formula is:Wherein, PeFor the effective of diesel main engine output
Power, n are diesel main engine revolving speed, MeIt (is measured by dynamometer) for diesel main engine effective torque.Meanwhile it being determined by experiment and determining square
The characteristic curve 2 of paddle, its calculation formula is Pp=Cpn3, wherein PpPower, C are can absorb for spacing paddlep(it is decided by for power coefficient
The geometric parameter of propeller), n is revolution speed of propeller.And the diesel main engine load speed under measurement each load of diesel main engine is special
Linearity curve (includes the first load speed of host curve 3 and the second load speed of host curve 4), the same peak load of calculation formula
Speed characteristic curve.Above-mentioned curve is input in monitoring system, by the diesel main engine under spacing paddle characteristic curve and the load
Load speed characteristic curve intersection point can get the operating point of z-type propulsion (comprising point a and point b).
Second step, when spacing paddle load changes, monitoring system judge diesel main engine and spacing paddle power whether
Matching, if it does, then original place recycles；If it does not match, further judging that the size of diesel main engine and spacing paddle power is closed
System: if 1) Pe> Pp, i.e. diesel main engine work is in the operating condition with host the first load speed characteristic curve (full load mode) 3
Under, and spacing paddle can absorb power and is in point b, then enters third step；If 2) Pe< Pp, i.e. diesel main engine work is in host second
Under load speed characteristic curve (partial load condition) 4, and spacing paddle can absorb power and is in point a, then enters the 4th step.
Third step, monitoring system issue oil-break and instruct to injection system, stop oil spout to partial cylinders, diesel main engine enters
Disconnected cylinder mode makes diesel main engine work under the operating condition with host the second load speed characteristic curve (partial load condition) 4,
Diesel main engine power and spacing paddle can absorb power match in point b at this time.
4th step, monitoring system issue recovery fuel feeding and instruct to injection system, restore fuel feeding, diesel main engine to oil-break cylinder
It is diesel main engine work under the operating condition with the first load speed of host characteristic curve 3 into full cylinder working mode, bavin at this time
Oily main engine power and spacing paddle can absorb power match in point a.
5th step returns to second step.
It is uneven for thermic load caused by the control of diesel main engine cylinder deactivation, it can take and be introduced into the exhaust gas of working cylinder not
In working cylinder, guarantees that the temperature of each cylinder maintains certain level as far as possible, guarantee the stabilization of the thermic load of diesel main engine, Jin Erwei
Hold the normal service life of diesel main engine.
Claims (5)
- The cylinder control method 1. a kind of spacing paddle diesel main engine breaks, it is characterized in that: when diesel main engine reduction of speed band spacing paddle is run, i.e., When gear-box is executed by being separated to engagement process, after diesel main engine monitoring system receives gear-box fitting control instruction, bavin is judged Oily host work mode: if disconnected cylinder mode, then diesel main engine monitoring system issues full cylinder working and instructs to injection system, restores The oil spout of diesel main engine oil-break cylinder, host enter full cylinder mode, and gear-box executes fit operation order and is engaged；If complete Cylinder mode, then gear-box then executes fit operation instruction and is engaged.Host Supervision System is receiving gear-box engagement completion instead After feedback signal, whether within the allowable range the difference of host actual speed and setting speed is judged, if within the allowable range, supervising Control system issues disconnected cylinder working and instructs to injection system, the oil spout of injection system stop section cylinder, and host enters disconnected cylinder mode； When band spacing paddle carries out accelerator to diesel main engine after gear-box reduction of speed, when diesel main engine actual motion speed is less than setting turn Speed, Host Supervision System issue full cylinder working and instruct to injection system, restore oil-break cylinder fuel injection, host is made to enter full cylinder mould Formula, Host Supervision System judges whether diesel main engine is under running on the lower load and actual speed and setting speed in the process Difference whether in preset allowed band, if under the running on the lower load and the difference of actual speed and setting speed reaches In preset allowed band, then sends disconnected cylinder working and instruct to injection system, cut-off parts cylinder fuel feeding, into disconnected cylinder mode.
- The cylinder control method 2. a kind of spacing paddle diesel main engine according to claim 1 breaks, it is characterized in that: when spacing paddle can be inhaled It receives power and is less than diesel main engine nominal power, Host Supervision System issues disconnected cylinder working and instructs to injection system, injection system pair Diesel main engine partial cylinders stop oil spout, so that this PSD Partical Shut Down, diesel main engine enters disconnected cylinder mode, and then diesel oil Host work meets main engine power and matches with the absorbable power of spacing paddle in new operating point；When diesel main engine institute band spacing Paddle works in full load, and Host Supervision System issues full cylinder working control instruction to injection system, restores diesel main engine oil-break The oil spout of cylinder makes diesel main engine work under full cylinder working mode, meets main engine power with spacing paddle and can absorb power phase Match.
- The cylinder control method 3. a kind of spacing paddle diesel main engine according to claim 2 breaks, it is characterized in that: in diesel main engine standard When speed belt spacing paddle of making preparation for dropping is run, i.e., comprised the steps of: when gear-box is executed by being separated to engagement processAfter the first step, diesel main engine monitoring system receive gear-box fitting control instruction, judge whether host work mode is disconnected Otherwise cylinder mode enters third step if then entering second step；Second step, Host Supervision System issue full cylinder working and instruct to injection system, restore the oil spout of oil-break cylinder, and host enters Full cylinder mode；Third step, gear-box execute fit operation instruction and are engaged；4th step, Host Supervision System receive gear-box engagement and complete after feeding back, and judge whether host actual speed reaches and set Determine revolving speed, if host reaches setting speed, enters the 5th step, otherwise original place recycles；5th step, Host Supervision System issue disconnected cylinder working and instruct to injection system, injection system stop section cylinder fuel injection, main Machine enters disconnected cylinder mode.
- The cylinder control method 4. a kind of spacing paddle diesel main engine according to claim 3 breaks, it is characterized in that: in host through gear When band spacing paddle is accelerated after case reduction of speed comprising the steps of:(1) diesel main engine monitoring system judges whether the actual speed of host is less than setting speed, if actual speed is less than setting Revolving speed then enters step (2), and otherwise original place recycles；(2) Host Supervision System issues full cylinder working and instructs to injection system, and injection system restores the oil spout of oil-break cylinder, host Into full cylinder mode Accelerating running；(3) Host Supervision System judges the difference DELTA n that whether host is in running on the lower load and actual speed is lower than setting speed Whether within the allowable range, if host is in running on the lower load and Δ n within the allowable range, the 4th step is executed, otherwise original place Circulation；(4) Host Supervision System issues disconnected cylinder working and instructs to injection system, injection system stop section cylinder fuel injection, host into Enter disconnected cylinder mode.
- The cylinder control method 5. a kind of spacing paddle diesel main engine according to claim 4 breaks, it is characterized in that: steady in diesel main engine When state is run comprising the steps of:A, diesel main engine peak load speed characteristic curve is obtained by experimental calibration, peak load when as diesel main engine operation Restraining line, its calculation formula isWherein, PeFor the effective power of diesel main engine output, n turns for diesel main engine Speed, MeFor diesel main engine effective torque；Meanwhile the characteristic curve for determining square paddle is determined by experiment, its calculation formula is Pp= Cpn3, wherein PpPower, C are can absorb for spacing paddlepFor power coefficient, n is revolution speed of propeller；And the bavin under each load of measurement Oily main unit load speed characteristic curve, calculation formula is the same as peak load speed characteristic curve；Above-mentioned relation curve is inputted and is supervised In control system, z-type propulsion is obtained by the diesel main engine load speed characteristic curve intersection point under spacing paddle characteristic curve and each load Operating point；B, when spacing paddle load changes, monitoring system judges that diesel main engine and propeller can absorb whether power matches, Original place recycles if matching；If it does not match, further judging that diesel main engine power can absorb the big of power with propeller Small relationship: if Pe> Pp, i.e., the power that there is diesel main engine the operating condition under the load speed characteristic curve to export is greater than spacing paddle can Power is absorbed, then enters step c；If Pe< Pp, i.e., diesel main engine have the load speed characteristic curve under operating condition output function Rate is less than spacing paddle and can absorb power, then enters step d；C, monitoring system issues oil-break and instructs to injection system, stops oil spout to partial cylinders, diesel main engine enters disconnected cylinder working Mode；D, monitoring system issues recovery fuel feeding and instructs to injection system, restores the oil spout of oil-break cylinder, and diesel main engine enters full cylinder Operating mode；E, return step b.
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| CN201910203961.5A CN110080888B (en) | 2019-03-18 | 2019-03-18 | Cylinder-breaking control method for diesel main engine with fixed pitch propeller |
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| CN201910203961.5A CN110080888B (en) | 2019-03-18 | 2019-03-18 | Cylinder-breaking control method for diesel main engine with fixed pitch propeller |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111377045A (en) * | 2020-03-09 | 2020-07-07 | 陕西柴油机重工有限公司 | Marine diesel engine load limiting method with fixed pitch propeller |
| CN112696274A (en) * | 2020-04-01 | 2021-04-23 | 长城汽车股份有限公司 | Cylinder deactivation method and system and vehicle |
| CN113217207A (en) * | 2021-06-02 | 2021-08-06 | 哈尔滨工程大学 | Cylinder-breaking control method for diesel main engine of controllable pitch propeller |
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| CN201255040Y (en) * | 2008-08-29 | 2009-06-10 | 伍永亮 | Multicylinder diesel engine with cylinder-stopping decompression device |
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| CN201255040Y (en) * | 2008-08-29 | 2009-06-10 | 伍永亮 | Multicylinder diesel engine with cylinder-stopping decompression device |
| KR20110130062A (en) * | 2010-05-27 | 2011-12-05 | 현대중공업 주식회사 | Cylinder fuel cut-out & smoke reduction system for four stroke marine diesel engine by two(2) solenoid valve |
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| CN111377045A (en) * | 2020-03-09 | 2020-07-07 | 陕西柴油机重工有限公司 | Marine diesel engine load limiting method with fixed pitch propeller |
| CN112696274A (en) * | 2020-04-01 | 2021-04-23 | 长城汽车股份有限公司 | Cylinder deactivation method and system and vehicle |
| CN112696274B (en) * | 2020-04-01 | 2022-05-06 | 长城汽车股份有限公司 | Cylinder deactivation method and system and vehicle |
| CN113217207A (en) * | 2021-06-02 | 2021-08-06 | 哈尔滨工程大学 | Cylinder-breaking control method for diesel main engine of controllable pitch propeller |
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| CN110080888B (en) | 2022-03-18 |
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