CN114233531A - Air distributor, air supplementing system and marine engine - Google Patents
Air distributor, air supplementing system and marine engine Download PDFInfo
- Publication number
- CN114233531A CN114233531A CN202111494547.8A CN202111494547A CN114233531A CN 114233531 A CN114233531 A CN 114233531A CN 202111494547 A CN202111494547 A CN 202111494547A CN 114233531 A CN114233531 A CN 114233531A
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- Prior art keywords
- air
- engine
- cylinder
- hole
- air supply
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M23/00—Apparatus for adding secondary air to fuel-air mixture
- F02M23/006—Valves specially shaped for supplying secondary air
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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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supercharger (AREA)
Abstract
The invention discloses an air distributor, an air supplementing system and a marine engine, wherein the air distributor is used for an air cylinder of the engine and comprises: the air supply valve comprises a valve body, wherein an inner cavity of the valve body is provided with a preset air supply channel, and the first end of each air supply channel is respectively communicated with an air supply valve on each cylinder of the engine; the air baffle is fixed on a cam shaft of the engine and provided with an air supply through hole for introducing air, and the air baffle is used for conducting the air supply through hole and a second end of the air supply channel according to the ignition sequence of the cylinders of the engine. According to the invention, the air is supplied to each air cylinder in sequence according to the firing sequence, so that the problem of insufficient air supply of the air bottle caused by simultaneously supplying air to different air cylinders is avoided. In conclusion, the invention solves the technical problem that the air supplement requirement of the large-cylinder-diameter engine cannot be met due to the limit of the volume of the air bottle on the ship.
Description
Technical Field
The invention relates to the technical field of engines, in particular to an air distributor, an air supplementing system and a marine engine.
Background
When the large-scale marine engine is matched with the supercharger, the requirement of the excess air coefficient of high load is often met preferentially, the supercharger with a large turbine is adopted, however, when starting, combining and other instantaneous loads are suddenly increased, the fuel quantity of the engine is suddenly increased, the energy at the turbine end of the supercharger is slightly increased, the rotating speed of the supercharger cannot be timely increased, more air enters the compressor end, and the fuel which is sprayed more cannot be rapidly and fully combusted, so that the engine has poor responsiveness and emits black smoke. In order to solve the problem of black smoke emission, external air is generally directly introduced into a supercharger compressor to assist in pushing a supercharger impeller to rotate, so that the rotating speed of the supercharger is increased, and the air inflow is increased. However, when the air supply system is applied to an engine with a large cylinder diameter, the total intake air demand is increased, the air to be supplied needs to rapidly enter the cylinder to assist combustion, the required air supply amount is increased, and the air supply system is limited by the volume of an air bottle on a ship, and the air supply method cannot meet the air supply requirement of the engine with the large cylinder diameter.
Disclosure of Invention
In view of the above, a first object of the present invention is to provide an air distributor, which aims to solve the technical problem that the air supply requirement of a large-bore engine cannot be met due to the volume of an air bottle on a ship.
The second purpose of the invention is to provide a gas supplementing system.
A third object of the present invention is to provide a marine engine.
In order to achieve the first object, the present invention provides the following solutions:
an air distributor for a cylinder of an engine, comprising:
the air supply valve comprises a valve body, wherein an inner cavity of the valve body is provided with a preset air supply channel, and the first end of each air supply channel is respectively communicated with an air supply valve on each cylinder of the engine;
the air baffle is fixed on a cam shaft of the engine, an air supplementing through hole for introducing air is formed in the air baffle, and the air baffle is used for conducting the air supplementing through hole and the second end of the air supplementing channel according to the ignition sequence of a cylinder of the engine.
In a specific embodiment, when the air replenishing through hole is communicated with the air replenishing through hole, the air cylinder corresponding to the air replenishing through hole is in an air intake stroke.
In another specific embodiment, when the air replenishing through hole and the air replenishing through hole are disconnected, the air cylinder corresponding to the air replenishing through hole is at the beginning section of the compression stroke.
In another specific embodiment, the air flap is rotatably engaged with the valve body.
In another specific embodiment, the gas supply through hole is an annular hole.
The various embodiments according to the invention can be combined as desired, and the embodiments obtained after these combinations are also within the scope of the invention and are part of the specific embodiments of the invention.
When the air distributor provided by the invention is used, the air supplementing channels on the air distributing valve are respectively communicated with the air supplementing valves on the air cylinders, the air supplementing channels correspond to the air cylinders one by one, and air is supplied, so that the air sequentially enters the air cylinders through the air supplementing through holes on the air baffle plate according to the firing sequence of the air cylinders of the engine, and air supplementation is completed. According to the invention, the air is supplied to each air cylinder in sequence according to the firing sequence, so that the problem of insufficient air supply of the air bottle caused by simultaneously supplying air to different air cylinders is avoided. In conclusion, the invention solves the technical problem that the air supplement requirement of the large-cylinder-diameter engine cannot be met due to the limit of the volume of the air bottle on the ship.
In order to achieve the second object, the present invention provides the following solutions:
an air make-up system comprising an air distributor as claimed in any preceding claim.
In a specific embodiment, the gas make-up system further comprises a gas make-up solenoid valve;
the inlet of the air supply electromagnetic valve is used for introducing air, and the outlet of the air supply electromagnetic valve is used for communicating the inlet of the air distributor.
In another specific embodiment, the gas make-up system further comprises a booster and a intercooler;
the inlet of the supercharger is used for introducing air, the outlet of the supercharger is used for being communicated with the inlet of the intercooler, and the outlet of the intercooler is used for being communicated with the air inlets of the cylinders.
The various embodiments according to the invention can be combined as desired, and the embodiments obtained after these combinations are also within the scope of the invention and are part of the specific embodiments of the invention.
Because the air replenishing system provided by the invention comprises the air distributor in any one of the above items, the air distributor has the beneficial effects that the air replenishing system provided by the invention comprises.
In order to achieve the third object, the present invention provides the following solutions:
a marine engine comprising a gas make-up system as claimed in any one of the preceding claims.
In a particular embodiment, the marine engine further comprises a plurality of cylinders;
and the cylinder cover of each cylinder is provided with an air compensating valve.
Because the marine engine provided by the invention comprises the air replenishing system in any one of the above items, the air replenishing system has the beneficial effects that the marine engine provided by the invention comprises.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic top view of an air distributor with the baffle in a position according to the present invention;
FIG. 2 is a schematic top view of the air distributor with the baffle in another position according to the present invention;
FIG. 3 is a schematic sectional view of the air distributor in an air-supplementing state;
fig. 4 is a schematic structural view of the gas replenishing system provided by the present invention.
Wherein, in fig. 1-4:
the air supply device comprises an air distributor 1000, a valve body 100, an air supply channel 101, an air baffle 200, an air supply through hole 201, an air supply electromagnetic valve 2000, a supercharger 3000, an intercooler 4000 and an air cylinder 5000.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 4 in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the position or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1-2, a first aspect of the present invention provides an air distributor 1000 for an air cylinder 5000 of an engine, which is used for solving the technical problem that the air supply requirement of a large-bore engine cannot be met due to the volume of an air bottle on a ship.
Specifically, the air distributor 1000 includes a valve body 100 and an air baffle 200, the inner cavity of the valve body 100 is provided with a preset air supply channel 101, and a first end of each air supply channel 101 is respectively communicated with an air supply valve on each air cylinder 5000 of the engine. The number of the air supply channels 101 is equal to the number of the cylinders 5000 in the engine, and the air supply channels are arranged in a one-to-one correspondence manner. In this embodiment, the preset number is 6 as an example. The number of the air replenishing passages 101 is not limited to 6, and other numbers may be used.
The air baffle 200 is fixed on a camshaft of the engine, an air supply through hole 201 for introducing air is formed in the air baffle 200, and the air baffle 200 is used for conducting the air supply through hole 201 and a second end of the air supply channel 101 according to the ignition sequence of the cylinder 5000 of the engine.
Specifically, the size of the air replenishing through hole 201 is specifically set as needed.
When the air distributor 1000 provided by the invention is used, each air supplementing channel 101 on the air distribution valve is respectively communicated with the air supplementing valve on each air cylinder 5000, the air supplementing channels 101 correspond to the air cylinders 5000 one by one, and fresh air is supplied, so that the air sequentially enters each air cylinder 5000 through the air supplementing through holes 201 on the air baffle plate 200 according to the ignition sequence of the air cylinders 5000 of an engine, and air supplementation is completed. According to the invention, air is supplied to each air cylinder 5000 in sequence according to the ignition sequence, so that insufficient air supply of the air bottle caused by supplying air to different air cylinders 5000 at the same time is avoided. The invention solves the technical problem that the air supplement requirement of a large-cylinder-diameter engine cannot be met due to the limit of the volume of an air bottle on a ship.
In some embodiments, when the make-up through hole 201 and the make-up through hole 201 are conducted, that is, when the make-up phase starts, the cylinder 5000 corresponding to the make-up through hole 201 is in the intake stroke. Specifically, the cylinder 5000 in the intake stroke means that the piston in the cylinder 5000 is before the bottom dead center and the exhaust valve of the engine is closed. At this time, the exhaust valve is just closed, so that the fresh air in the cylinder 5000 is less, the air pressure is low, the opening of the air supply valve is facilitated, and air supply enters the cylinder 5000. The valve timing of the engine is shown in fig. 3.
In some embodiments, when the air supply through hole 201 and the air supply through hole 201 are disconnected, the air cylinder 5000 corresponding to the air supply through hole 201 is in a compression stroke starting section, and the air cylinder 5000 in the compression stroke starting section means that after a piston of the air cylinder 5000 is at a bottom dead center and before an intake valve of the engine is closed, at this time, air in the air cylinder 5000 is compressed and has high air pressure, and if the air supply valve is continuously opened, air backflow is caused.
In some embodiments, the present invention discloses that the air baffle 200 may be rotatably attached to the valve body 100. Specifically, the air baffle 200 seals the valve body 100, the valve body 100 is stationary, and the air baffle 200 rotates with the camshaft.
In some embodiments, the invention discloses that the gas supply through hole 201 is an annular hole. The shape of the gas supply through hole 201 is not limited, and is specifically set as needed.
The gas is directly supplemented into the cylinder 5000 according to the ignition sequence, compared with the traditional gas supplementing mode, the gas supplementing device has the advantages that the gas supplementing is quicker, the air input can be increased instantly, the engine can burn the air with enough suddenly increased oil input quantity at the later stage of the starting process and when the load is suddenly increased, the engine responsiveness is improved, and the black smoke phenomenon is avoided. Meanwhile, the air supply phase length or the air supply pressure can be adjusted according to different air supply working conditions, such as a starting stage, a load sudden-increase stage and the like, so that the air supply requirements under different working conditions are met.
As shown in fig. 4, a second aspect of the present invention provides a system for supplementing air, including an air distributor 1000 as in any one of the above embodiments.
Since the air supplement system provided by the present invention includes the air distributor 1000 in any one of the above embodiments, the air distributor 1000 has the advantages that the air supplement system provided by the present invention includes.
In some embodiments, the air make-up system further comprises an air make-up solenoid valve 2000, wherein an inlet of the air make-up solenoid valve 2000 is used for introducing air, and an outlet of the air make-up solenoid valve 2000 is used for communicating with an inlet of the air distributor 1000. That is, the make-and-break of the gas entering the air distribution valve is controlled by the gas supplementing electromagnetic valve 2000.
Specifically, the air supply solenoid valve 2000 is in signal connection with the controller, and the controller controls the on-off of the air supply solenoid valve 2000, so that the automation of the air supply system is further improved.
In some embodiments, the air make-up system further comprises a supercharger 3000 and an intercooler 4000, an inlet of the supercharger 3000 is used for introducing air, an outlet of the supercharger 3000 is used for communicating with an inlet of the intercooler 4000, and an outlet of the intercooler 4000 is used for communicating with an air inlet of each cylinder 5000.
The air intake of the cylinder 5000 is realized by providing a supercharger 3000 and a intercooler 4000. It should be noted that a switch valve may be respectively disposed between the intercooler 4000 and the air inlet of each cylinder 5000, so as to control on/off of air entering each cylinder 5000.
In a third aspect, the invention provides a marine engine comprising an air make-up system as in any one of the embodiments above.
Further, the invention discloses a marine engine which further comprises a plurality of cylinders 5000, and air compensating valves are respectively arranged on cylinder covers of the cylinders 5000.
Because the marine engine provided by the invention comprises the air replenishing system in any one of the above items, the air replenishing system has the beneficial effects that the marine engine provided by the invention comprises.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in an article or device that comprises the element.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the core concepts of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. An air distributor for a cylinder of an engine, comprising:
the air supply valve comprises a valve body, wherein an inner cavity of the valve body is provided with a preset air supply channel, and the first end of each air supply channel is respectively communicated with an air supply valve on each cylinder of the engine;
the air baffle is fixed on a cam shaft of the engine, an air supplementing through hole for introducing air is formed in the air baffle, and the air baffle is used for conducting the air supplementing through hole and the second end of the air supplementing channel according to the ignition sequence of a cylinder of the engine.
2. The air distributor of claim 1, wherein when the air make-up through hole and the air make-up through hole are conducted, the air cylinder corresponding to the air make-up through hole is in an air intake stroke.
3. The air distributor of claim 2, wherein when the air make-up through hole and the air make-up through hole are disconnected, the air cylinder corresponding to the air make-up through hole is at the beginning of the compression stroke.
4. The air distributor of claim 1, wherein the air flap is rotatably engaged with the valve body.
5. The air distributor according to any one of claims 1 to 4, wherein the air supply through holes are annular holes.
6. A system for supplementing air, comprising an air distributor according to any one of claims 1 to 5.
7. The gas supplementing system according to claim 6, further comprising a gas supplementing solenoid valve;
the inlet of the air supply electromagnetic valve is used for introducing air, and the outlet of the air supply electromagnetic valve is used for communicating the inlet of the air distributor.
8. The gas supplementing system according to claim 6 or 7, further comprising a supercharger and a intercooler;
the inlet of the supercharger is used for introducing air, the outlet of the supercharger is used for being communicated with the inlet of the intercooler, and the outlet of the intercooler is used for being communicated with the air inlets of the cylinders.
9. A marine engine comprising the air make-up system of any one of claims 6 to 8.
10. The marine engine of claim 9, further comprising a plurality of cylinders;
and the cylinder cover of each cylinder is provided with an air compensating valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111494547.8A CN114233531B (en) | 2021-12-08 | 2021-12-08 | Air distributor, air supplementing system and marine engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111494547.8A CN114233531B (en) | 2021-12-08 | 2021-12-08 | Air distributor, air supplementing system and marine engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114233531A true CN114233531A (en) | 2022-03-25 |
| CN114233531B CN114233531B (en) | 2023-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111494547.8A Active CN114233531B (en) | 2021-12-08 | 2021-12-08 | Air distributor, air supplementing system and marine engine |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2228986Y (en) * | 1994-11-07 | 1996-06-12 | 刘海涛 | Energy economizer for car |
| CN1324431A (en) * | 1998-10-21 | 2001-11-28 | Abb涡轮系统有限公司 | Method for operating a diesel engine |
| CN1898465A (en) * | 2004-01-16 | 2007-01-17 | 宝马股份公司 | Inlet device for an internal combustion engine |
| CN101413403A (en) * | 2008-11-05 | 2009-04-22 | 周登荣 | Air power engine assembly |
| CN103016139A (en) * | 2012-12-04 | 2013-04-03 | 哈尔滨工程大学 | Sequential turbocharging switching air supplementing device and method of diesel engine |
| CN205013151U (en) * | 2015-09-29 | 2016-02-03 | 长城汽车股份有限公司 | Engine and vehicle comprising same |
| CN111094756A (en) * | 2017-09-14 | 2020-05-01 | 维特思科科技有限责任公司 | Radial compressor for a charging device of an internal combustion engine, charging device and lamella for a diaphragm and method for producing such a lamella |
| CN111894771A (en) * | 2020-07-22 | 2020-11-06 | 东风商用车有限公司 | Engine air inlet system, engine, vehicle and air inlet method |
-
2021
- 2021-12-08 CN CN202111494547.8A patent/CN114233531B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2228986Y (en) * | 1994-11-07 | 1996-06-12 | 刘海涛 | Energy economizer for car |
| CN1324431A (en) * | 1998-10-21 | 2001-11-28 | Abb涡轮系统有限公司 | Method for operating a diesel engine |
| CN1898465A (en) * | 2004-01-16 | 2007-01-17 | 宝马股份公司 | Inlet device for an internal combustion engine |
| CN101413403A (en) * | 2008-11-05 | 2009-04-22 | 周登荣 | Air power engine assembly |
| CN103016139A (en) * | 2012-12-04 | 2013-04-03 | 哈尔滨工程大学 | Sequential turbocharging switching air supplementing device and method of diesel engine |
| CN205013151U (en) * | 2015-09-29 | 2016-02-03 | 长城汽车股份有限公司 | Engine and vehicle comprising same |
| CN111094756A (en) * | 2017-09-14 | 2020-05-01 | 维特思科科技有限责任公司 | Radial compressor for a charging device of an internal combustion engine, charging device and lamella for a diaphragm and method for producing such a lamella |
| CN111894771A (en) * | 2020-07-22 | 2020-11-06 | 东风商用车有限公司 | Engine air inlet system, engine, vehicle and air inlet method |
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| Publication number | Publication date |
|---|---|
| CN114233531B (en) | 2023-06-23 |
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