CN103321796A - Air intake system of supercharged gasoline engine with double pressure-stabilizing cavities - Google Patents
Air intake system of supercharged gasoline engine with double pressure-stabilizing cavities Download PDFInfo
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- CN103321796A CN103321796A CN2013102622599A CN201310262259A CN103321796A CN 103321796 A CN103321796 A CN 103321796A CN 2013102622599 A CN2013102622599 A CN 2013102622599A CN 201310262259 A CN201310262259 A CN 201310262259A CN 103321796 A CN103321796 A CN 103321796A
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Abstract
The invention discloses an air intake system of a supercharged gasoline engine with double pressure-stabilizing cavities, aiming to solve the problem of imbalance of intake pressure of the supercharged gasoline engines. The air intake system comprises an air cleaner, a supercharger, an intercooler, a restrictor and a group of air intake branches matched with cylinders of the gasoline engine in number, and is characterized in that a first pressure-stabilizing cavity and a second pressure-stabilizing cavity are arranged between the restrictor and the air intake branches, and a pressure-equalizing pipe is arranged between the first and second pressure-stabilizing cavities. By the arrangement, pressure of air flowing into the cylinders can be balanced, air snatching among the neighboring air intake branches is avoided, engine jittering caused by insufficient intake pressure due to transient urgent acceleration or deceleration is avoided, stability of the air intake system of an engine is improved, and dynamic performance, economical efficiency and emission performance of the engine are improved.
Description
Technical field
The present invention relates to a kind of engine aspirating system, especially a kind of boosting type petrol engine intake system that two pressure stabilizing cavities are set belongs to technical field of internal combustion engines.
Background technique
Development along with auto manufacturing technology, high-performance enginer becomes the target that manufacturing enterprise's new product development is pursued, and the research of especially organizing charge air flow to move, reduce the aspects such as air inlet pipeline flow resistance, raising charging efficiency to engine aspirating system receives Professional visitors's concern.
The engine aspirating system structure is to organizing suitable air motion, promotion flame propagation, reduction HC to discharge significant.Because present petrolic gas handling system arranges single pressure stabilizing cavity between air intake branch and closure, proportionality action to stream pressure is relatively poor, in addition, in order to guarantee the abundant air inlet of motor and exhaust, Modern Engine all takes to prolong the method for inlet and outlet time, and namely intake valve is early opened, evening closes and exhaust valve early leaves, late closing, when especially the boosting type motor is in the low speed high load operating mode, for obtaining preferably scavenge effect, valve overlap is strengthened, so intake advance angle also strengthens.For example the ignition order of four-cylinder gasoline engine is simultaneously air inlet of the intake stroke initial stage existence phenomenon of one, three, four, two, the second cylinder intake stroke later stages and the first cylinder, and gas can occur to disturb and rob each other mutually; Equally, there is simultaneously air inlet phenomenon in the intake stroke initial stage of the 3rd cylinder intake stroke later stage and the 4th cylinder, owing to existing between the adjacent cylinder air intake branch and robbing the gas phenomenon, intake efficiency is lower, when the anxious acceleration of transient state or anxious the deceleration, easily cause air inlet not enough, sluggish, shake appears in motor.In addition, existing gasoline engine intake system does not arrange system pressure Equilibrator and pressure-detecting device in pressure stabilizing cavity inside, can not realize the Real-Time Monitoring to pressure stabilizing cavity pressure fluctuating in inner situation in intake process.
Summary of the invention
The object of the invention is to the drawback for prior art, provide a kind of energy balance to enter the pressure of gas in the jar, eliminate the two pressure stabilizing cavity gas handling systems of boosting type petrol engine that each air intake branch is robbed the gas phenomenon, caused motor to shake because of the suction pressure deficiency when avoiding the anxious acceleration of transient state or anxious the deceleration.
Problem of the present invention realizes with following technical proposals:
The two pressure stabilizing cavity gas handling systems of a kind of boosting type petrol engine, it comprises the air intake branch of air-strainer, pressurized machine, intercooler, closure and one group of quantity and Engine number coupling, after the improvement, the first pressure stabilizing cavity and the second pressure stabilizing cavity are set between closure and air intake branch;
Described air intake branch comprises the first air intake branch, the second air intake branch, the 3rd air intake branch and the 4th air intake branch, wherein the first air intake branch, the 3rd air intake branch are communicated with the first pressure stabilizing cavity, and the second air intake branch, the 4th air intake branch are communicated with the second pressure stabilizing cavity.
The two pressure stabilizing cavity gas handling systems of above-mentioned boosting type petrol engine arrange pressure-equalizing pipe between the first pressure stabilizing cavity and the second pressure stabilizing cavity.
The two pressure stabilizing cavity gas handling systems of above-mentioned boosting type petrol engine, described the first pressure stabilizing cavity and the second pressure stabilizing cavity volume sum are 1.5～2.5 liters.
The two pressure stabilizing cavity gas handling systems of above-mentioned boosting type petrol engine, described pressure-equalizing pipe is provided with electrically-controlled valve, and described electrically-controlled valve is connected with the signal output part of Engine ECU.
The two pressure stabilizing cavity gas handling systems of above-mentioned boosting type petrol engine are provided with the first pressure transducer in described the first pressure stabilizing cavity, and described the first pressure transducer is connected with the signal input part of Engine ECU.
The two pressure stabilizing cavity gas handling systems of above-mentioned boosting type petrol engine are provided with the second pressure transducer in described the second pressure stabilizing cavity, and described the second pressure transducer is connected with the signal input part of Engine ECU.
The present invention arranges two pressure stabilizing cavities between closure and air intake branch, make two pressure stabilizing cavities carry out independent control according to the engine ignition order to various inlet arm suction pressure, avoided robbing the gas phenomenon between the adjacent air intake branch of former monostable pressure cavity configuration gas handling system; The present invention arranges pressure-equalizing pipe between the first pressure stabilizing cavity and the second pressure stabilizing cavity, internal pressure that can two pressure stabilizing cavities of balance; The present invention can avoid transient state anxious accelerate or during anxious the deceleration suction pressure deficiency or pressure excessive, reduce the jitter phenomenon of motor; The present invention is respectively arranged with pressure transducer in two pressure stabilizing cavities, pressure surge situation that can the Real Time Monitoring air inlet is convenient to the control to gas handling system pressure.In a word, the present invention has improved the stability of engine aspirating system, thereby has improved power character, Economy and the emission performance of motor.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing.
Fig. 1 is rough package drawing of the present invention;
Fig. 2 is that the cavity configuration schematic diagram is pressed in bistable.
Each list of reference numerals is among the figure: 1, air-strainer, 2, pressurized machine, 3, intercooler, 4, closure, the 5, first pressure stabilizing cavity, the 6, second pressure stabilizing cavity, 7, pressure-equalizing pipe, 8, electrically-controlled valve, the 9, first pressure transducer, 10, the second pressure transducer, 11, Engine ECU, the 12, first air intake branch, 13, the second air intake branch, 14, the 3rd air intake branch, the 15, the 4th air intake branch, 16, engine chamber.
Embodiment
Referring to Fig. 1, Fig. 2, the present invention includes the air intake branch of air-strainer 1, pressurized machine 2, intercooler 3, closure 4 and one group of quantity and Engine number coupling, its specialization is: the first pressure stabilizing cavity 5 and the second pressure stabilizing cavity 6 are set between closure 4 and air intake branch, between the first pressure stabilizing cavity 5 and the second pressure stabilizing cavity 6 pressure-equalizing pipe 7 are set; Described pressure-equalizing pipe 7 is provided with electrically-controlled valve 8, and described electrically-controlled valve 8 is connected with the signal output part of Engine ECU 11; Be provided with the first pressure transducer 9 in described the first pressure stabilizing cavity 5, described the first pressure transducer 9 is connected with the signal input part of Engine ECU 11; Be provided with the second pressure transducer 10 in described the second pressure stabilizing cavity 6, described the second pressure transducer 10 is connected with the signal input part of Engine ECU 11.
Referring to Fig. 1, Fig. 2, a specific embodiment of the present invention is the two pressure stabilizing cavity gas handling systems of a kind of boosting type four-cylinder gasoline machine, the ignition order of this four-cylinder gasoline machine is one, three, four, two, there is simultaneously air inlet phenomenon in the intake stroke initial stage of the second cylinder intake stroke later stage and the first cylinder, there is simultaneously air inlet phenomenon in the intake stroke initial stage of the 3rd cylinder intake stroke later stage and the 4th cylinder, in the present embodiment, air intake branch of the engine comprises the first air intake branch 12, the second air intake branch 13, the 3rd air intake branch 14 and the 4th air intake branch 15, the first air intake branch 12 wherein, the 3rd air intake branch 14 is communicated with the first pressure stabilizing cavity 5, the second air intake branch 13, the 4th air intake branch 15 is communicated with the second pressure stabilizing cavity 6, because the adjacent cylinder air intake branch connects from different pressure stabilizing cavities respectively, avoided adjacent cylinder to rob at the same time the gas phenomenon during air inlet, thereby improved the intake efficiency of motor, improved power performance and the economic performance of motor.The first pressure stabilizing cavity and the second pressure stabilizing cavity volume sum are 1.5～2.5 liters in the present embodiment, for the 1.2-1.5 of former single pressure stabilizing cavity volume doubly, and preferred the first pressure stabilizing cavity is identical with the second pressure stabilizing cavity volume, has further strengthened voltage regulation result.For mating different engine aspirating system structures, the first pressure stabilizing cavity of the present invention and the second pressure stabilizing cavity volume can be slightly variant, but the first pressure stabilizing cavity and the second pressure stabilizing cavity volume ratio are between 1～1.2.The working procedure of the two pressure stabilizing cavity gas handling systems of this four-cylinder gasoline machine is: gas is filtered through air-strainer 1 by the intake manifold under atmospheric pressure, enter subsequently pressurized machine 2, gas is in the inner pressurization that realizes of pressurized machine, entering intercooler 3 cools off it again, flow to closure 4 through cooled pressurization gas, enter engine chamber 16 from closure 4 through two paths, wherein a path is to connect the first air intake branch 12 and the 3rd air intake branch 14 by the first pressure stabilizing cavity 5, and another path connects the second air intake branch 13 and the 4th air intake branch 15 by the second pressure stabilizing cavity 6.The present invention realizes balance two pressure stabilizing cavity internal pressures by the electrically-controlled valve 8 on the pressure-equalizing pipe 7 between the first pressure stabilizing cavity 5 and the second pressure stabilizing cavity 6, detect the pressure of the first pressure stabilizing cavity 5 interior gases and pressure signal is sent to Engine ECU 11 by the first pressure transducer 9, detect the pressure of the second pressure stabilizing cavity 6 interior gases and pressure signal is sent to Engine ECU 11 by the second pressure transducer 10, the pressure that is compared again the first pressure stabilizing cavity 5 and the second pressure stabilizing cavity 6 interior gases by Engine ECU 11, then send instruction to electrically-controlled valve 8, by the switching realization pressure balance effect of electrically-controlled valve 8.
Claims (6)
1. two pressure stabilizing cavity gas handling systems of a boosting type petrol engine, it comprises the air intake branch of air-strainer (1), pressurized machine (2), intercooler (3), closure (4) and one group of quantity and Engine number coupling, it is characterized in that, the first pressure stabilizing cavity (5) and the second pressure stabilizing cavity (6) are set between closure (4) and air intake branch; Described air intake branch comprises the first air intake branch (12), the second air intake branch (13), the 3rd air intake branch (14) and the 4th air intake branch (15), wherein the first air intake branch (12), the 3rd air intake branch (14) are communicated with the first pressure stabilizing cavity (5), and the second air intake branch (13), the 4th air intake branch (15) are communicated with the second pressure stabilizing cavity (6).
2. the two pressure stabilizing cavity gas handling systems of a kind of boosting type petrol engine according to claim 1 is characterized in that, between the first pressure stabilizing cavity (5) and the second pressure stabilizing cavity (6) pressure-equalizing pipe (7) are set.
3. the two pressure stabilizing cavity gas handling systems of a kind of boosting type petrol engine according to claim 1 and 2 is characterized in that, described the first pressure stabilizing cavity (5) is 1.5～2.5 liters with the second pressure stabilizing cavity (6) volume sum.
4. the two pressure stabilizing cavity gas handling systems of a kind of boosting type petrol engine according to claim 3 is characterized in that, described pressure-equalizing pipe (7) is provided with electrically-controlled valve (8), and described electrically-controlled valve (8) is connected with the signal output part of Engine ECU (11).
5. two pressure stabilizing cavity gas handling systems of a kind of boosting type petrol engine according to claim 4, it is characterized in that, be provided with the first pressure transducer (9) in described the first pressure stabilizing cavity (5), described the first pressure transducer (9) is connected with the signal input part of Engine ECU (11).
6. two pressure stabilizing cavity gas handling systems of a kind of boosting type petrol engine according to claim 5, it is characterized in that, be provided with the second pressure transducer (10) in described the second pressure stabilizing cavity (6), described the second pressure transducer (10) is connected with the signal input part of Engine ECU (11).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310262259.9A CN103321796B (en) | 2013-06-27 | 2013-06-27 | The two pressure stabilizing cavity gas handling system of a kind of boosting type petrol engine |
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| CN201310262259.9A CN103321796B (en) | 2013-06-27 | 2013-06-27 | The two pressure stabilizing cavity gas handling system of a kind of boosting type petrol engine |
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| CN103321796A true CN103321796A (en) | 2013-09-25 |
| CN103321796B CN103321796B (en) | 2015-08-05 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103528490A (en) * | 2013-11-05 | 2014-01-22 | 无锡市迈日机器制造有限公司 | High-measurement-range submicron-level high-precision pneumatic electric converter |
| CN108612610A (en) * | 2018-07-04 | 2018-10-02 | 李桂江 | A kind of engine charge stable-pressure device |
Citations (7)
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| JPH05332143A (en) * | 1992-05-30 | 1993-12-14 | Suzuki Motor Corp | Intake device of v type engine |
| US20020195076A1 (en) * | 2001-06-20 | 2002-12-26 | Toyota Jidosha Kabushiki Kaisha | Variable intake device for internal combustion engines and method for manufacturing the device |
| CN101069011A (en) * | 2005-11-08 | 2007-11-07 | 丰田自动车株式会社 | Air-intake device for internal combustion engine |
| CN200999681Y (en) * | 2007-01-09 | 2008-01-02 | 哈尔滨东安汽车动力股份有限公司 | Inlet manifold of car engine |
| FR2916245A3 (en) * | 2007-05-16 | 2008-11-21 | Renault Sas | Internal combustion engine e.g. diesel engine, for motor vehicle i.e. diesel type motor vehicle, has manifolds supplying exhaust gas and fresh air mixture to cylinders, such that each of two adjacent cylinders are supplied by one manifold |
| CN201925063U (en) * | 2010-12-15 | 2011-08-10 | 中国汽车工程研究院股份有限公司 | Intake manifold for heavy gas engine |
| CN102678402A (en) * | 2012-05-28 | 2012-09-19 | 奇瑞汽车股份有限公司 | Air intake manifold with integrated air track |
-
2013
- 2013-06-27 CN CN201310262259.9A patent/CN103321796B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05332143A (en) * | 1992-05-30 | 1993-12-14 | Suzuki Motor Corp | Intake device of v type engine |
| US20020195076A1 (en) * | 2001-06-20 | 2002-12-26 | Toyota Jidosha Kabushiki Kaisha | Variable intake device for internal combustion engines and method for manufacturing the device |
| CN101069011A (en) * | 2005-11-08 | 2007-11-07 | 丰田自动车株式会社 | Air-intake device for internal combustion engine |
| CN200999681Y (en) * | 2007-01-09 | 2008-01-02 | 哈尔滨东安汽车动力股份有限公司 | Inlet manifold of car engine |
| FR2916245A3 (en) * | 2007-05-16 | 2008-11-21 | Renault Sas | Internal combustion engine e.g. diesel engine, for motor vehicle i.e. diesel type motor vehicle, has manifolds supplying exhaust gas and fresh air mixture to cylinders, such that each of two adjacent cylinders are supplied by one manifold |
| CN201925063U (en) * | 2010-12-15 | 2011-08-10 | 中国汽车工程研究院股份有限公司 | Intake manifold for heavy gas engine |
| CN102678402A (en) * | 2012-05-28 | 2012-09-19 | 奇瑞汽车股份有限公司 | Air intake manifold with integrated air track |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103528490A (en) * | 2013-11-05 | 2014-01-22 | 无锡市迈日机器制造有限公司 | High-measurement-range submicron-level high-precision pneumatic electric converter |
| CN108612610A (en) * | 2018-07-04 | 2018-10-02 | 李桂江 | A kind of engine charge stable-pressure device |
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| CN103321796B (en) | 2015-08-05 |
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