CN107587933A - A kind of seawater flow governor motion, a kind of intercooler system, a kind of engine - Google Patents
A kind of seawater flow governor motion, a kind of intercooler system, a kind of engine Download PDFInfo
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- CN107587933A CN107587933A CN201711057914.1A CN201711057914A CN107587933A CN 107587933 A CN107587933 A CN 107587933A CN 201711057914 A CN201711057914 A CN 201711057914A CN 107587933 A CN107587933 A CN 107587933A
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- 238000000034 method Methods 0.000 abstract description 7
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- 238000009795 derivation Methods 0.000 description 8
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- 239000000498 cooling water Substances 0.000 description 2
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- 238000005516 engineering process Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
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- 239000012188 paraffin wax Substances 0.000 description 2
- 230000001839 systemic circulation Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
This application discloses a kind of seawater flow governor motion, the seawater flow for regulation into charge air cooler, including：Two-position four-way electric control reversing valve, for it is gathering air outlet temperature after charge air cooler and be connected to the temperature-detecting device of two-position four-way electric control reversing valve, be connected to the hydraulic cylinder of two-position four-way electric control reversing valve, be connected to hydraulic cylinder piston rod transmission mechanism, the waterway pipe for connecting the sea water pump port of export and charge air cooler arrival end, wherein, regulating valve is provided with waterway pipe, regulating valve is connected to transmission mechanism, drives regulating valve to realize by transmission mechanism in piston rod reciprocatory movement and opens and closes.This programme introduces electric control reversing valve in traditional intercooler system, so that the seawater flow into charge air cooler is adjustable, it can be responded in time for the actual change of air outlet temperature after charge air cooler, regulation process is accurately effective, effectively avoids the appearance of the too low situation of Engine Inlet Temperature.Disclosed herein as well is a kind of intercooler system and a kind of engine.
Description
Technical field
The present invention relates to marine engine cooling system technical field, more particularly to a kind of seawater flow governor motion, one
Kind intercooler system, a kind of engine.
Background technology
Traditional marine diesel typically uses seawater cooling intercooler, and charge air cooler, which is used to reduce after being pressurized, enters temperature
Degree, seawater are provided by sea water pump by machine band sea water pump on diesel engine or machine, and seawater pump drive is used with diesel engine and is rigidly connected, i.e.,
At the beginning of diesel engine starting, sea water pump is just continuously providing seawater cooling to charge air cooler.However, at low ambient temperatures, such as
Diesel engine intake temperature is relatively low after fruit charge air cooler, just occurs that engine exhaust emits white cigarette phenomenon, causes engine firing condition
Deteriorate and pollute environment, influence Consumer's Experience.And at this moment if continuing to cool down charge air cooler, it will cause lower air inlet
Temperature so that engine firing condition is continuous worsening.Some Diesel Engine Plants use increases sea on charge air cooler seawater outlet pipeline
Water thermostat enters the means of seawater flow and temperature in charge air cooler as control, but many problems and shortcomings also be present.
Existing marine engine, which uses, to be increased thermostat on charge air cooler seawater outlet pipeline and realizes into charge air cooler
The adjustment effect of seawater flow and temperature, concrete operating principle is referring to Fig. 1.
Sea water pump 02 is used as power source, seawater water inlet 01 is introduced into charge air cooler 03 by pipeline, after engine booster
Air cooled down, air themperature is according to ambient temperature and engine load conditions, generally 0 DEG C after engine booster
~200 DEG C, and in it is cold after optimum air temperature range be 50 DEG C~60 DEG C, that is, at low ambient temperatures or underload situation
Under, such as air themperature is in 50 DEG C of situations below after supercharging, now, it is not necessary that charge air cooler 03 is cooled down.Prior art
It is cold in being flowed through using wax bag impression in thermostat 06 by increasing thermostat 06 in charge air cooler seawater outlet pipeline 04 in scheme
Ocean temperature after device 03, if leaving water temperature is too low (such as less than 45 DEG C), this part water outlet cannot pass through systemic circulation pipeline
07 flows back to sea, but before returning to sea water pump 02 by partial circulating pipeline 05, enter charge air cooler 03 after continuation is pressurized, it is final more
The air outlet temperature of charge air cooler 03 is improved after secondary circulation.
Following defect in the prior art be present：
(1) thermostat is formed by multiple assembling parts, and wherein vital part is wax bag and shell, and wax bag easily leaks,
Paraffin performance easily fails, and shell is perishable in the seawater due to long period of soaking；
(2) because paraffin is as temperature-sensing element, sensitivity is relatively low, and using engine ocean temperature as signal source, causes
Good closed loop feedback control can not be formed, can not finally form effective control to charge air cooler air outlet temperature；
(3) ocean temperature after charge air cooler due to flow it is uneven or when leaving water temperature thermostat setting unlatching value it is attached
When near, because fluctuating temperature frequently causes thermostat the situation for opening wink pass wink occur, pressure fluctuates after being easily caused sea water pump,
Flow in system, pressure play are caused, influences water pump reliability.
The content of the invention
In order to solve the above-mentioned problems in the prior art, the invention provides a kind of sea applied to intercooler system
Water-carrying capacity governor motion, it can in time be responded for the actual change of temperature after engine intercooler, effectively avoid starting
The too low situation of machine intake air temperature occurs.It is a further object to provide a kind of intercooler system and a kind of engine.
To achieve these goals, the invention provides following technical scheme：
A kind of seawater flow governor motion, for adjusting the seawater flow into charge air cooler, including：
Two-position four-way electric control reversing valve；
For gathering the temperature-detecting device of air outlet temperature after the charge air cooler, the two-position four-way electric control reversing is connected to
The signal receiving end of valve；
Hydraulic cylinder provided with piston rod, the hydraulic oil pipeline of the hydraulic cylinder connect with the two-position four-way electric control reversing valve
Connect；
It is connected to the transmission mechanism of the piston rod；
For connecting the waterway pipe of the sea water pump port of export and charge air cooler arrival end, regulation is provided with the waterway pipe
Valve；
Wherein, the regulating valve is connected to the transmission mechanism, passes through the biography in the piston rod reciprocatory movement
Motivation structure drives the regulating valve to realize and opened and closed.
Preferably, in above-mentioned seawater flow governor motion, the hydraulic cylinder is connected with two hydraulic oil pipelines, and
Choke valve is provided with two hydraulic oil pipelines.
Preferably, in above-mentioned seawater flow governor motion, the transmission mechanism includes the tooth for being connected to the piston rod
Bar and the gear with the rack engaged transmission, the gear realize the drive connection with the regulating valve by connecting shaft.
Preferably, in above-mentioned seawater flow governor motion, the regulating valve is butterfly valve.
Preferably, in above-mentioned seawater flow governor motion, the hydraulic oil pipeline of the hydraulic cylinder is communicated in engine profit
Sliding machine oil.
Preferably, in above-mentioned seawater flow governor motion, the temperature-detecting device is provided with temperature detecting module
Engine controller.
Seawater flow governor motion provided by the invention, for adjusting the seawater flow into charge air cooler, including：Two four
Logical electric control reversing valve, for temperature detection dress that is gathering air outlet temperature after charge air cooler and being connected to two-position four-way electric control reversing valve
Put, be connected to the hydraulic cylinder of two-position four-way electric control reversing valve, be connected to hydraulic cylinder piston rod transmission mechanism, for connecting sea
The waterway pipe of pump outlet and charge air cooler arrival end, wherein, regulating valve is provided with waterway pipe, regulating valve is connected to biography
Motivation structure, passes through transmission mechanism in piston rod reciprocatory movement and drives regulating valve to realize and open and close.
The regulation process of this programme is as follows：
Two-position four-way electric control reversing valve, as control signal, dc source is carried with engine by air outlet temperature after charge air cooler
As power resources, commutation function is realized, by carrying out draining and oil-filled to the piston both sides in hydraulic cylinder, produces piston both sides
Raw pressure difference, so as to promote piston and piston rod to move back and forth.Piston rod then drives water while reciprocating motion by transmission mechanism
Regulating valve in the pipeline of road realizes the action opened and closed, so as to realize between the sea water pump port of export and charge air cooler arrival end
The break-make of waterway pipe, and then adjust seawater flow.
This programme introduces electric control reversing valve in traditional intercooler system so that and the seawater flow into charge air cooler is adjustable,
It can be responded in time for the actual change of air outlet temperature after charge air cooler, regulation process is accurately effective, effectively avoids starting
The appearance of the too low situation of machine intake air temperature.This programme can be applied to the cooling system of marine engine, can effectively reduce hair peculiar to vessel
Motivation cold-starting emits the situation of white cigarette, effectively reduces cooling system failure rate, extends regulating valve service life, improves engine
Fuel economy, significant economic benefit is brought to user.
Present invention also offers a kind of intercooler system for including above-mentioned seawater flow governor motion.The intercooler system is produced
The derivation for the beneficial effect that the derivation of raw beneficial effect is brought with above-mentioned seawater flow governor motion is substantially similar,
Therefore repeat no more herein.
Present invention also offers a kind of engine for including above-mentioned intercooler system.Beneficial effect caused by the engine
The derivation for the beneficial effect that derivation is brought with above-mentioned seawater flow governor motion is substantially similar, therefore no longer superfluous herein
State.
Preferably, above-mentioned engine is marine diesel.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is prior art charge air cooler system cooling principle schematic diagram；
Fig. 2 is the arrangement schematic diagram of seawater flow governor motion provided by the invention；
Fig. 3 is the operation principle schematic diagram of the seawater flow governor motion in the specific embodiment of the invention.
In Fig. 1：
The water inlet of 01- seawater, 02- sea water pumps, 03- charge air coolers, 04- charge air cooler seawater outlet pipeline, 05- partial circulatings pipeline,
06- thermostats, 07- systemic circulation pipelines；
In Fig. 2 and Fig. 3：
1- two-position four-ways electric control reversing valve, 2- choke valves, 3- hydraulic cylinders, 4- pistons, 5- racks, 6- gears, 7- connecting shafts,
8- regulating valves, 9- waterway pipes, the 10- sea water pumps port of export, 11- charge air cooler arrival ends.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Fig. 2 is refer to, Fig. 2 is the arrangement schematic diagram of seawater flow governor motion provided by the invention.
The invention provides a kind of seawater flow governor motion, the seawater flow for regulation into charge air cooler, including：
Two-position four-way electric control reversing valve 1；
For gathering the temperature-detecting device of air outlet temperature after charge air cooler, the letter of two-position four-way electric control reversing valve 1 is connected to
Number receiving terminal；
Hydraulic cylinder 3 provided with piston rod, the hydraulic oil pipeline of hydraulic cylinder 3 are connected with two-position four-way electric control reversing valve 1, hydraulic pressure
Piston 4 is provided with cylinder 3, piston 4 will be divided into two cavitys, the two paths position of two-position four-way electric control reversing valve 1 in hydraulic cylinder 3
The cavity for putting the controllable both sides of piston 4 realizes draining or oil-filled respectively, and piston 4 is connected with piston rod, and the end of piston rod is stretched out
In hydraulic cylinder 3, in order to connect transmission mechanism；
It is connected to the transmission mechanism of piston rod；
For connecting the waterway pipe 9 of the sea water pump port of export 10 and charge air cooler arrival end 11, tune is provided with waterway pipe 9
Save valve 8；
Wherein, regulating valve 8 is connected to transmission mechanism, and regulating valve is driven by transmission mechanism in piston rod reciprocatory movement
8 realize opening and closing.
The regulation process of this programme is as follows：
Two-position four-way electric control reversing valve 1, as control signal, direct current is carried with engine by air outlet temperature after charge air cooler
Source is equipped with electromagnetic relay, is powered by Inside coil as power resources, inside, attracts internal mandrel movement, realizes commutation
Function, by carrying out draining and oil-filled to the both sides of piston 4 in hydraulic cylinder 3, the both sides of piston 4 are made to produce pressure difference, so as to promote work
Plug 4 and piston rod move back and forth.The regulating valve in waterway pipe 9 is then driven by transmission mechanism while piston rod moves back and forth
8 realize the action opened and closed, so as to realize the waterway pipe 9 between the sea water pump port of export 10 and charge air cooler arrival end 11
Break-make, and then adjust seawater flow.
This programme introduces electric control reversing valve in traditional intercooler system so that and the seawater flow into charge air cooler is adjustable,
It can be responded in time for the actual change of air outlet temperature after charge air cooler, regulation process is accurately effective, effectively avoids starting
The appearance of the too low situation of machine intake air temperature.This programme can be applied to the cooling system of marine engine, can effectively reduce hair peculiar to vessel
Motivation cold-starting emits the situation of white cigarette, effectively reduces cooling system failure rate, extends regulating valve service life, improves engine
Fuel economy, significant economic benefit is brought to user.
Preferably, the hydraulic cylinder 3 in this programme is connected with two hydraulic oil pipelines, is respectively used to be communicated in the both sides of piston 4
Cavity, be provided with choke valve 2 on two hydraulic oil pipelines, choke valve 2 is as the stream on the hydraulic oil pipeline of connection liquid cylinder pressure 3
Regulating element is measured, can play and flow control liquid-filled in hydraulic cylinder 3 is acted on, realizes that the inner carrier 4 of hydraulic cylinder 3 is believed control
Number delay response, by this section delay the response time can effectively filter hash to cooling water channel in intercooler system
Influence.
It should be noted that the hydraulic cylinder 3 in this programme can be realized to regulating valve 8 by the transmission mechanism of diversified forms
Switch control, such as rack and pinion drive mechanism, crank rocker transmission mechanism, Worm and worm-wheel gearing etc. can be set.
Preferably, the transmission mechanism in this programme employs rack and pinion drive mechanism, specifically, the transmission mechanism includes being connected to work
The rack 5 of stopper rod and the gear 6 with the engaged transmission of rack 5, gear 6 realize that the transmission with regulating valve 8 connects by connecting shaft 7
Connect.In use, being moved together by piston rod band carry-over bar 5 when piston 4 or so moves back and forth, passed by the engagement of rack-and-pinion
Dynamic, most the straight reciprocating motion of piston 4 is converted into regulating valve 8 and is turned on and off acting at last, realizes the sea water pump port of export
The break-make of waterway pipe 9 between 10 and charge air cooler arrival end 11.
It should be noted that the regulating valve 8 in this programme can use the structure types such as butterfly valve, plate valve, ball valve, preferably
Ground, the regulating valve 8 in this programme select butterfly valve, and the spinning movement in waterway pipe 9 of the valve element of butterfly valve is turned on and off with realizing.
Preferably, the hydraulic oil pipeline of the hydraulic cylinder 3 in this programme is communicated in engine lubrication machine oil, i.e. hydraulic cylinder 3 is adopted
The power resources for driving its piston 4 to act, engine lubrication machine oil are used as by the use of the high-pressure oil in engine lubrication lubricating oil system
System provides high-pressure oil by lubricating oil pump, controls the action of hydraulic cylinder 3 as power source compared to the direct current of simple electrically-controlled valve,
This programme can transmit bigger torque, it is easier to realize the opening and closing function of regulating valve 8.
It should be noted that the temperature-detecting device in this programme is used for the rear air outlet temperature for detecting charge air cooler, for letter
Change system architecture, it is preferable that the temperature-detecting device in this programme is the engine controller provided with temperature detecting module, is started
Machine controller can detect the rear air outlet temperature of charge air cooler in real time automatically, and rear air outlet temperature value is converted into electric signal and is transferred to
The signal receiving end of two-position four-way electric control reversing valve 1, this programme can be set in engine controller for controlling two four
The temperature range (such as 50 DEG C~60 DEG C) of the logical action of electric control reversing valve 1 commutation, air outlet temperature rises to the temperature after charge air cooler
When spending 50 DEG C of the lower limit in section, reversal valve receives action signal, so as to commutate.This programme is used as the whole series by the use of electric control reversing valve
The signal control component of governor motion, more easily with final control targe --- air outlet temperature realizes accurate, spirit after charge air cooler
Quick signal acquisition and transmission, make control process more accurate effective.
Certainly, during this programme can also be detected in real time using the temperature sensor that outlet side is separately provided after charge air cooler
Air outlet temperature after cooler.
Fig. 3 is refer to, Fig. 3 is the operation principle schematic diagram of the seawater flow governor motion in the specific embodiment of the invention.
The course of work of this programme is discussed in detail with reference to Fig. 3：
When just starting under engine low temperature environment, regulating valve 8 is in initial closed state, and the left side of the piston 4 of hydraulic cylinder 3 is filled
Full hydraulic oil, now, does not have seawater circulation in charge air cooler.Air after engine booster is continuous with the increase of engine load
Heating, when reaching 50 DEG C of the lower limit in 50 DEG C~60 DEG C of target temperature section, two-position four-way electric control reversing valve 1 is connected to action letter
Number, now, reversal valve completes commutation action (switching to position S2 by the position S1 in Fig. 3) in very short time, and due to section
The throttling action of valve 2 is flowed, the hydraulic oil on the left side of piston 4 will not be released instantaneously, it is necessary to after buffer time t, and piston 4 can just be opened
Beginning is moved to the left, and now regulating valve 8 starts to rotate under the drive for the transmission mechanism that rack 5, gear 6 and connecting shaft 7 form,
Seawater then enters charge air cooler arrival end 11 from the sea water pump port of export 10, and outlet side after charge air cooler is cooled down.Choke valve 2
Flow and the pressure oscillation that can be reduced in whole cooling line are set.
The present invention program's has the beneficial effect that：
(1) electric controlled regulating valve is introduced with engine intercooler system in conventional ship so that into the seawater stream of charge air cooler
Measure adjustable, cold rear engine intake air temperature is adjustable controllable in realization, effectively avoids emitting white cigarette phenomenon during engine cold-starting；
(2) signal control component by the use of electric control reversing valve as a whole set of governor motion, more easily mesh is controlled with final
Mark --- air outlet temperature realizes accurate, sensitive signal acquisition and transmission after charge air cooler, makes control process more accurate effective；
(3) executing agency by the use of hydraulic cylinder as a whole set of governor motion, the control moment of regulating valve can be effectively increased, gram
Clothes are not because valve switch is smooth caused by impurity, rusty stain etc. the defects of；
(4) by the damping design of choke valve, it can effectively slow down gait of march of the piston in hydraulic cylinder, utilize this section
Buffer time, it effectively can eliminate and filter influence of the hash to intercooler system cooling water channel；
(5) this programme adds the regulation form of hydraulic gear using electrically-controlled valve, that is, make use of the signal acquisition of electrically-controlled valve
And processing function, the characteristics of make use of the controllable response time of hydraulic gear again, realize the mistake to electrically-controlled valve collection signal
Filter acts on, and slow down the flow inside cooling system, pressure is trembled, and then reduces the fluctuation of charge air cooler air outlet temperature, effectively
Extend valve service life and improve engine firing condition；
(6) power resources of the engine oil pressure as hydraulic cylinder in engine lubrication system are used, compared to simple electrically-controlled valve
For direct current as power source, it is bigger that this programme transmits torque, it is easier to realizes the opening and closing function of valve.
Present invention also offers a kind of intercooler system for including above-mentioned seawater flow governor motion.The intercooler system is produced
The derivation for the beneficial effect that the derivation of raw beneficial effect is brought with above-mentioned seawater flow governor motion is substantially similar,
Therefore repeat no more herein.
Present invention also offers a kind of engine for including above-mentioned intercooler system.Beneficial effect caused by the engine
The derivation for the beneficial effect that derivation is brought with above-mentioned seawater flow governor motion is substantially similar, therefore no longer superfluous herein
State.
It should be noted that the engine provided in this programme is preferably marine diesel, and certainly, those skilled in the art
Above-mentioned intercooler system can also be applied into other needs in the engine that seawater cools down, and repeats no more herein.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (9)
- A kind of 1. seawater flow governor motion, for adjusting the seawater flow into charge air cooler, it is characterised in that including：Two-position four-way electric control reversing valve (1)；For gathering the temperature-detecting device of air outlet temperature after the charge air cooler, the two-position four-way electric control reversing valve is connected to (1) signal receiving end；Hydraulic cylinder (3) provided with piston rod, hydraulic oil pipeline and the two-position four-way electric control reversing valve of the hydraulic cylinder (3) (1) connect；It is connected to the transmission mechanism of the piston rod；For connecting the waterway pipe (9) of the sea water pump port of export (10) and charge air cooler arrival end (11), the waterway pipe (9) is interior It is provided with regulating valve (8)；Wherein, the regulating valve (8) is connected to the transmission mechanism, passes through the transmission in the piston rod reciprocatory movement Mechanism drives the regulating valve (8) to realize and opened and closed.
- 2. seawater flow governor motion according to claim 1, it is characterised in that the hydraulic cylinder (3) is connected with two The hydraulic oil pipeline, and choke valve (2) is provided with two hydraulic oil pipelines.
- 3. seawater flow governor motion according to claim 1, it is characterised in that the transmission mechanism includes being connected to institute State the rack (5) of piston rod and the gear (6) with the rack (5) engaged transmission, the gear (6) pass through connecting shaft (7) Realize the drive connection with the regulating valve (8).
- 4. seawater flow governor motion according to claim 1, it is characterised in that the regulating valve (8) is butterfly valve.
- 5. seawater flow governor motion according to claim 1, it is characterised in that the hydraulic oil pipe of the hydraulic cylinder (3) Road is communicated in engine lubrication machine oil.
- 6. seawater flow governor motion according to claim 1, it is characterised in that the temperature-detecting device is provided with temperature Spend the engine controller of detection module.
- 7. a kind of intercooler system, it is characterised in that including the seawater flow regulation as any one of claim 1 to 6 Mechanism.
- 8. a kind of engine, it is characterised in that including intercooler system as claimed in claim 7.
- 9. engine according to claim 8, it is characterised in that the engine is marine diesel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711057914.1A CN107587933A (en) | 2017-11-01 | 2017-11-01 | A kind of seawater flow governor motion, a kind of intercooler system, a kind of engine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711057914.1A CN107587933A (en) | 2017-11-01 | 2017-11-01 | A kind of seawater flow governor motion, a kind of intercooler system, a kind of engine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108308310A (en) * | 2018-05-11 | 2018-07-24 | 务川自治县大树茶业有限公司 | Big tree tea tea leaf fermentation device |
| CN113107660A (en) * | 2021-03-31 | 2021-07-13 | 潍柴重机股份有限公司 | Control method of intercooler cooling system |
| CN114961994A (en) * | 2022-03-31 | 2022-08-30 | 潍柴动力股份有限公司 | Intercooler cleaning-required determining method and engine |
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