CN105649756A - Twin-stage supercharged engine with interstage cooler - Google Patents

Twin-stage supercharged engine with interstage cooler Download PDF

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Publication number
CN105649756A
CN105649756A CN201610019519.3A CN201610019519A CN105649756A CN 105649756 A CN105649756 A CN 105649756A CN 201610019519 A CN201610019519 A CN 201610019519A CN 105649756 A CN105649756 A CN 105649756A
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CN
China
Prior art keywords
engine
stage
pressure stage
cooling
turbine
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CN201610019519.3A
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Chinese (zh)
Inventor
卢永信
张晓静
罗列冠
何钦
郦建丽
郑智展
黄臻
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中国重汽集团济南动力有限公司
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Priority to CN201610019519.3A priority Critical patent/CN105649756A/en
Publication of CN105649756A publication Critical patent/CN105649756A/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01PCOOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00Liquid cooling
    • F01P3/20Cooling circuits not specific to a single part of engine or machine
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01PCOOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00Controlling of coolant flow
    • F01P7/14Controlling of coolant flow the coolant being liquid
    • F01P7/16Controlling of coolant flow the coolant being liquid by thermostatic control
    • F01P7/165Controlling of coolant flow the coolant being liquid by thermostatic control characterised by systems with two or more loops
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B29/00Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04Cooling of air intake supply
    • F02B29/0406Layout of the intake air cooling or coolant circuit
    • F02B29/0412Multiple heat exchangers arranged in parallel or in series
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B29/00Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04Cooling of air intake supply
    • F02B29/0406Layout of the intake air cooling or coolant circuit
    • F02B29/0437Liquid cooled heat exchangers
    • F02B29/0443Layout of the coolant or refrigerant circuit
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/004Engines characterised by provision of pumps driven at least for part of the time by exhaust with exhaust drives arranged in series
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/013Engines characterised by provision of pumps driven at least for part of the time by exhaust with exhaust-driven pumps arranged in series
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/12Control of the pumps
    • F02B37/18Control of the pumps by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
    • F02B37/183Arrangements of bypass valves or actuators therefor

Abstract

The invention discloses a twin-stage supercharged engine with an interstage cooler. The twin-stage supercharged engine comprises a twin-stage supercharged system with two turbochargers and a cooling system with the interstage cooler. The twin-stage supercharged system comprises an air filter, a low pressure stage gas compressor, the interstage cooler, a high pressure stage gas compressor, an intercooler, a high pressure stage turbine and a low pressure stage turbine, wherein the air filter, the low pressure stage gas compressor, the interstage cooler, the high pressure stage gas compressor and the interstage cooler communicate with an engine intake manifold, and the high pressure stage turbine and the low pressure stage turbine communicate with an engine exhaust manifold. The high pressure stage turbine is connected with a supercharger exhaust valve. The cooling system comprises a cooling pre-compression air inlet cooling circuit and a compression air inlet cooling circuit which are in parallel, and water in an engine water tank is taken for cooling liquid of the two cooling circuits for cooling. According to the twin-stage supercharged system, the responsive requirement is met by the small turbine, and the engine achieves the maximum torque with a low rotating speed; the high torque requirement is met by the big turbine, the proportion for driving the two turbines of waste gas is controlled, and no much pumping loss is caused while the requirements for large compression ratios and large flow are met.

Description

一种带级间冷却器的双级増压发动机 An inter-stage cooler with two-stage pressure-increasing engine

技术领域 FIELD

[0001]本发明涉及一种双级增压发动机,尤其涉及一种带级间冷却器的发动机,属于汽车发动机技术领域。 [0001] The present invention relates to a two-stage supercharged engine, particularly to an inter-stage cooler with engine belongs to the technical field of automobile engines.

背景技术 Background technique

[0002] 随着环境污染日益严重和能源日益短缺,世界各国对汽车节能减排越来越重视,排放法规也日益严格。 [0002] With the increasingly serious environmental pollution and growing energy shortages, the world of cars increasing emphasis on energy conservation, emission regulations have become more stringent. 高效、节能、环保是发动机技术发展的主要目标,涡轮增压技术能大大改善发动机的动力性、经济性,降低尾气中的污染物排放。 Efficiency, energy saving, environmental protection is the main objective of the development of engine technology, turbocharging can greatly improve the power and efficiency of the engine, reducing the contaminant emissions in the exhaust gas. 两级增压技术能够显著提高柴油机的功率,改善柴油机低速扭矩,降低排放和油耗。 Two techniques can significantly increase the boost engine power, improve low speed diesel engine torque, fuel consumption and reduce emissions. 因而两级增压技术成为国内柴油机开发中的一个重要方向。 Thus two-stage turbocharging technology has become an important direction of development of the domestic diesel engine. 但是,两级增压在提高混合气体密度的同时,势必带来混合气温度的升高,温度的提升反过来对提高进气效率、降低发动机爆压、降低排放中的氮氧化合物以及改善发动机低速性能起到反作用,因此带级间中冷的两级增压发动机是非常必要的。 However, two-stage charging while increasing the density of the mixed gas, is bound to bring the mixture temperature is increased, in turn, raise the temperature to improve the intake efficiency, reduce engine detonation pressure, reduced nitrogen oxide emissions and improving engine counterproductive speed performance, and therefore in a cold room with two-stage supercharged engine is necessary.

发明内容 SUMMARY

[0003]本发明所要解决的技术问题是针对现有技术存在的缺陷,提供一种带级间冷却器的双级增压发动机。 [0003] The present invention solves the technical problem for the drawbacks of the prior art, there is provided an inter-stage cooler with two-stage supercharged engine.

[0004]为解决这一技术问题,本发明提供了一种带级间冷却器的双级增压发动机,包括采用两个涡轮增压器的双级增压系统和带有级间冷却器的冷却系统,所述双级增压系统包括与发动机进气总管相连通的空气滤清器、低压级压气机、级间冷却器、高压级压气机和中冷器,以及与发动机排气总管相连通的高压级涡轮、低压级涡轮,所述高压级涡轮上并联有增压器放气阀,该增压器放气阀由脉冲阀控制,脉冲阀与发动机ECU连接,发动机ECU控制放气阀的开启工况和开启比例;所述冷却系统包括冷却预压缩进气冷却回路和压缩进气冷却回路两个互不影响的平行冷却回路,两路冷却液均直接从发动机水箱取水冷却。 [0004] In order to solve this technical problem, the present invention provides an inter-stage two-stage supercharged engine with cooler, comprising between two turbochargers using two-stage supercharging system with a stage and a cooler the cooling system, comprising a two-stage supercharging system with the engine intake manifold that communicates the air cleaner, low-pressure stage compressor interstage cooling, the high pressure stage compressor and the intercooler, and is connected to the engine exhaust manifold through the high-pressure stage turbine, the low-pressure stage turbine, in parallel with the high-pressure stage turbo supercharger purge valve, the purge valve is controlled by the supercharger pulse valve, pulse valve is connected with the engine ECU, the engine ECU controls the purge valve and an open condition opening ratio; the cooling system includes a pre-compressed intake air compressed intake air and the cooling circuit of the cooling circuit of the two parallel cooling circuits independently of each other, are two coolant from the engine cooling water tank directly.

[0005]所述预压缩进气冷却回路包括发动机水箱、水栗、级间冷却器和节温器。 [0005] The pre-compressed intake air between the engine cooling circuit comprising the tank, water chestnut, stage cooler and thermostat.

[0006]所述压缩进气冷却回路包括发动机水箱、水栗、发动机出水总管和节温器。 [0006] The compressed air tank includes an engine cooling circuit, water chestnut, water mains and the engine thermostat.

[0007]有益效果:本发明包含级间可控放气阀和级间中冷回路等新型部件,双级增压系统用小涡轮满足响应性要求,使发动机较低的转速实现最大扭矩,用大涡轮满足高扭矩要求,通过控制废气的驱动两个涡轮的比例,在满足较大压缩比、大流量的同时又不产生较多的栗气损失。 [0007] Advantageous Effects: The present invention comprises novel inter-stage controllable discharge refrigerant circuit components and the like between the valve-stage, two-stage supercharging system with a small turbine to meet the requirement in response to the low engine speed to achieve maximum torque, with large turbo high torque to meet the requirement, by two proportional control of the exhaust gas driven turbines, the compression ratio to meet the larger, without producing large flow loss is more Li.

附图说明 BRIEF DESCRIPTION

[0008]图1为本发明的结构原理示意图。 [0008] FIG 1 Schematic structure of the present invention.

[0009]图中:I空气滤清器、2低压级压气机、3低压级涡轮、4级间冷却器、5高压级压气机、6高压级涡轮、7中冷器、8节温器、9水栗、10发动机水箱、11发动机进气歧管、12发动机、13发动机出水管、14发动机排气歧管、15脉冲阀、16增压器放气阀、17发动机ECU。 [0009] FIG Where: I air cleaner, low-pressure stage compressor 2, the low-pressure stage turbine 3, 4 interstage cooler, high-pressure stage compressor 5, 6 high-pressure stage turbine, intercooler 7, 8 thermostat section, 9 water chestnut, water tank 10 of the engine, an intake manifold of the engine 11, the engine 12, the engine outlet pipe 13, the engine exhaust manifold 14, the pulse valve 15, purge valve 16 turbocharger 17 of the engine ECU.

具体实施方式 Detailed ways

[0010]下面结合附图及实施例对本发明做具体描述。 [0010] Example embodiments of the present invention made detailed description in conjunction with the accompanying drawings and the following.

[0011 ]图1所示为本发明的结构原理示意图。 Structural principle of the present invention shown in [0011] FIG. 1 is a schematic.

[0012]本发明包括采用两个涡轮增压器的双级增压系统和带有级间冷却器4的冷却系统,所述双级增压系统包括与发动机进气总管相连通的空气滤清器1、低压级压气机2、级间冷却器4、高压级压气机5和中冷器7,以及与发动机排气总管相连通的高压级涡轮6、低压级涡轮3,所述高压级涡轮6上并联有增压器放气阀16,该增压器放气阀16由脉冲阀15控制,脉冲阀15与发动机ECUl7连接,发动机ECUl7控制增压器放气阀16的开启工况和开启比例;所述冷却系统包括冷却预压缩进气冷却回路和压缩进气冷却回路两个互不影响的平行冷却回路,两路冷却液均直接从发动机水箱10中取水冷却。 [0012] The present invention includes using two two-stage turbocharger supercharging system and an engine intake manifold communicated with an air filtration system interstage cooler 4, the two-stage supercharging system comprising 1, the low-pressure stage compressor 2, an interstage cooler 4, the high-pressure stage compressor 5 and cooler 7, and a high-pressure stage turbine communicating with the engine exhaust manifold 6, the low-pressure stage turbine 3, the high-pressure stage turbine parallel supercharger 6 purge valve 16, the booster 15 controls the purge valve 16, by a pulse valve 15 is connected with the engine ECUl7 impulse valve, the engine control ECUl7 supercharger discharge opening 16 of the valve condition and an open ratio; the cooling system includes a pre-compressed intake air compressed intake air and the cooling circuit of the cooling circuit of the two parallel cooling circuits independently of each other, are two cooling fluid from the cooling water tank 10 in the engine.

[0013] 所述预压缩进气冷却回路包括发动机水箱10、水栗9、级间冷却器4和节温器8。 [0013] The pre-compressed intake air of the engine cooling circuit includes a tank 10, water chestnut 9, 4 and the interstage cooler thermostat 8.

[0014]所述压缩进气冷却回路包括发动机水箱10、水栗9、发动机出水总管13和节温器8。 [0014] The compressed air tank 10 includes an engine cooling circuit, water chestnut 9, the water manifold 13 and the engine thermostat 8.

[0015] 本发明的工作与原理和工作过程: [0015] The working principle and process of the present invention:

[0016] (I)新鲜空气通过空气滤清器I进入到低压级压气机2,压缩后的空气经过级间冷却器4、高压级压气机5及中冷器7后到达发动机进气歧管11,然后分配到各缸,新鲜空气经低压级压气机2和高压级压气机5两级增压后,进气量更多,可以使燃烧更充分; [0016] (I) the fresh air enters through the air filter I to the low pressure stage compressor 2, the compressed air through the cooler 4, 5 and the high pressure stage compressor intercooler to the engine intake manifold between the stages 7 11, and then distributed to each cylinder, the fresh air after a low pressure stage compressor 2 and the two high-pressure stage supercharger compressor 5, more intake air amount, the combustion can be more fully;

[0017] (2)增压后的气体到达进气歧管11时,脉冲阀15会根据发动机进气歧管11中的气压和发动机ECU17发过来的电信号指令控制增压器放气阀16的开闭程度:当发动机12处于怠速、低速或低负荷时,发动机ECU17根据采集到的转速和扭矩信号,将该工况对应的脉冲阀占空比发送给脉冲阀15,脉冲阀15将占空比电信号转化为实际的开度,脉冲阀15的开度决定了进入增压器放气阀16的空气压力,从而影响放气阀的开度; [0017] the gas (2) boost to the intake manifold 11, the pulse valve 15 will purge valve 16 according to the engine intake manifold 11 of the engine ECU17 pressure and electrical signals sent over control instruction booster the opening and closing degree: 12 when the engine is idling, low speed or low load, the engine ECU17 collected according to speed and torque signals, the pulse conditions corresponding to a valve duty cycle pulse valve 15, the valve 15 will account for pulse air ratio of electrical signals into actual opening degree, the degree of opening of the impulse valve 15 determines the pressure of air entering the supercharger purge valve 16, thus affecting the degree of opening of the purge valve;

[0018]当不需要增压器放气阀16放气时,增压器放气阀16与脉冲阀15间管路内的高压气体从脉冲阀15的A端泄掉,脉冲阀15使增压器放气阀16关闭,废气从发动机排气歧管14送到高压级涡壳6、及低压级涡壳3做功、驱动相应的高压级压气机5、及低压级压气机2工作;当发动机12处于较高速运转、较高负荷时,发动机ECUl7传递给脉冲阀15信号,脉冲阀15使增压器放气阀16部分开启,部分废气由高压级涡轮6到低压级涡轮3,另一部分废气直接从发动机排气歧管14直接输送到低压级涡轮3,降低高压级涡轮6的转速及增压效率;当中冷器7进气压力过高时,发动机ECUl 7传递给脉冲阀15信号,脉冲阀15使增压器放气阀16完全开启,大部分废气通过放气通道进入低压级涡轮3,只有一小部分废气进入高压机涡轮6; [0018] When no booster bleed air purge valve 16, the supercharger pressure gas discharge valve 16 in the conduit 15 from the pulse valve of the pulse A vent valve 15 off the valve 15 so that the pulse increase the pressure release valve 16 is closed, the exhaust gas to the high pressure stage scroll 6, and the low-pressure stage acting scroll 3 from the engine exhaust manifold 14, drives a corresponding high-pressure stage compressor 5, and low-pressure stage compressor 2 is operated; when when the engine 12 in a relatively high speed, high load, engine ECUl7 pulse signal transmitted to the valve 15, the valve 15 causes the pressure booster pulse purge valve 16 partially open, the exhaust gas from the high pressure stage of the turbine section 6 to the low-pressure stage turbine 3, the other part transporting exhaust gas from the engine exhaust manifold 14 directly to the low-pressure stage turbine 3, reduce speed and high-pressure stage turbo supercharging efficiency of 6; 7 when cold among intake pressure is too high, the engine 15 is transmitted to ECUl 7 signal pulse valve, pulsing valve 15 causes the booster bleed valve 16 fully open, most of the exhaust gas through the bleed passage into the low-pressure stage turbine 3, only a small fraction of exhaust gas into the high pressure turbine-6;

[0019] (3)预压缩进气冷却回路可以为高压级压气机5提供低温的预压缩气:由水栗9从发动机水箱10中取水经压缩进入级间冷却器4对预压缩进气进行冷却,这样直接从发动机水箱10取水进入级间冷却器4大大提高了冷却效果,有利于提高高压级增压效率以及降低燃油消耗,冷却完级间冷却器4的冷却液再经过管路回到节温器8中,进入发动机冷却循环; [0019] (3) precompressed intake air of the cooling circuit may be provided for the low pressure stage compressor air pre-compression 5: pre-cooler 4 interstage compressed intake air is compressed from the engine water chestnut tank 9 through 10 by the incoming water cooling, so that the water tank 10 into the water directly from the engine inter-stage cooler 4 greatly improving the cooling effect, help to improve the high-pressure stage supercharging efficiency and reduced fuel consumption, inter-stage cooler End cooling fluid through the conduit 4 and then back to the the thermostat 8, into the engine cooling circuit;

[0020] (4)压缩进气冷却回路由水栗9直接从发动机水箱10中取水经压缩后达到缸体、缸盖等进行冷却,冷却后冷却液回到节温器8处,当冷却液温度较低时,节温器8关闭,冷却液经发动机出水总管13回到水栗9,进行发动机内部小循环;当冷却液温度较高时,节温器8慢慢开启,冷却液部分回到发动机水箱10,此时发动机大小循环同时进行;当冷却液温度超过节温器8完全开启温度时,节温器8完全打开,冷却液全部回到发动机水箱10中,发动机12进行大循环; [0020] (4) cooling the compressed intake air routing water chestnut back directly from the engine 9 to reach the water tank 10 by the compressed cylinder block, cylinder head and other cooling, cooled coolant returns to the thermostat 8, when the coolant At lower temperatures, the thermostat 8 is closed, the coolant through the engine 13 back to the water mains water chestnut 9, small circulation inside the engine; when the coolant temperature is high, the thermostat 8 is turned on slowly, coolant back portion tank 10 to the engine, where the engine at the same time the size of the loop; when the coolant temperature exceeds the thermostat 8 fully open temperature, the thermostat 8 is fully opened, the entire back of the engine cooling liquid tank 10, the engine 12 for a cycle;

[0021] (5)级间可控增压器放气阀16与高压级涡轮6并联设置,该增压器放气阀16串联了一个由发动机ECU17控制的脉冲阀15,当发动机ECU17监控到发动机12进气量过多时,通过脉冲阀15的出口气体压力控制增压器放气阀16的开启,将部分不做功的废气旁通到低压级涡轮3; [0021] (5) Every controllable stage turbocharger 6 and the purge valve 16 is provided in parallel to the high-pressure stage turbine, the turbocharger purge valve 16 a series of pulse valve controlled by the engine ECU17 15, when the monitored engine ECU17 excessive intake air amount of the engine 12, booster outlet gas pressure control valve 15 of the discharge opening 16 by the pulsing valve, the wastegate work partially into low-pressure stage turbine 3;

[0022]脉冲阀15由发动机ECU17控制,但不仅只是控制增压器放气阀16的开关,还可以在几乎任何转速控制增压器放气阀16的开启幅度,做到全工况无级控制,这样有效地提高发动机12在低负荷和怠速工况的燃油经济性以及高转速的排放性能;另一方面,两级增压发动机的新鲜空气在经过低压级增压之后温度势必会升高,这样的高温气体进入高压级压气机会造成增压效率降低的后果,因此压缩后的高温气体进入高压级压气机之前需要先进行冷却,即级间冷却是必要的。 [0022] The pulsing valve 15 controlled by the engine ECU17, but not only control the discharge switch booster valve 16 can also open the discharge valve 16 in the amplitude of virtually any turbocharger speed control, so that the whole condition steplessly control, which effectively improve the fuel economy and emissions performance of high speed and low load of the engine 12 in the idle condition; on the other hand, two fresh air in a supercharged engine after the low-pressure stage supercharger is bound to increase the temperature such high temperature gas enters the high-pressure stage compressor can reduce the consequences of the supercharging efficiency, high-temperature compressed gas is required to enter the high-pressure cooling prior stage compressor, i.e., interstage cooling is necessary.

[0023 ]本发明包含级间可控放气阀和级间中冷回路等新型部件,双级增压系统用小涡轮满足响应性要求,使发动机较低的转速实现最大扭矩,用大涡轮满足高扭矩要求,通过控制废气的驱动两个涡轮的比例,在满足较大压缩比、大流量的同时又不产生较多的栗气损失。 [0023] The present invention comprises a novel controllable discharge refrigerant circuit components and the like between the interstage valve stage, two-stage supercharging system with a small turbine to meet the requirement in response to the low engine speed to achieve maximum torque, to meet with the large turbine high torque requirements, the two turbines driven by the ratio control of the exhaust gas, without creating more Li loss is large while satisfying the compression ratio, large flow.

[0024]本发明上述实施方案,只是举例说明,不是仅有的,所有在本发明范围内或等同本发明的范围内的改变均被本发明包围。 [0024] The embodiment of the present invention, the above-described embodiment, only illustrative, not the only, all changes which come within the scope of the present invention within the scope of the invention, or equivalent of the present invention are surrounded.

Claims (3)

1.一种带级间冷却器的双级增压发动机,其特征在于:包括采用两个涡轮增压器的双级增压系统和带有级间冷却器(4)的冷却系统,所述双级增压系统包括与发动机进气总管相连通的空气滤清器(I)、低压级压气机(2)、级间冷却器(4)、高压级压气机(5)和中冷器(7),以及与发动机排气总管相连通的高压级涡轮(6)、低压级涡轮(3),所述高压级涡轮(6)上并联有增压器放气阀(I6),该增压器放气阀(16)由脉冲阀(I5)控制,脉冲阀(15)与发动机ECU(17)连接,发动机ECU(17)控制增压器放气阀(16)的开启工况和开启比例;所述冷却系统包括冷却预压缩进气冷却回路和压缩进气冷却回路两个互不影响的平行冷却回路,两路冷却液均直接从发动机水箱(10)中取水冷却。 An inter-stage cooler with two-stage supercharged engine, wherein: the two-stage supercharging system comprising two turbochargers, and (4) cooling system with inter-stage cooler, the comprises a two-stage supercharging system with the engine intake manifold that communicates the air cleaner (the I), the low-pressure stage compressor (2), inter-stage cooler (4), a high-pressure stage compressor (5) and the intercooler ( 7), and the engine exhaust manifold communicating with the high-pressure stage turbine (6), connected in parallel with a booster bleed valve (I6 of) the low-pressure stage turbine (3), the high-pressure stage turbine (6), the boost purge valve device (16) controlled by a pulse valve (I5), the pulse valve (15) with the engine ECU (17) connected to an engine ECU (17) controls the booster bleed valve (16) and an open condition opening ratio ; the cooling system includes a pre-compressed intake air compressed intake air and the cooling circuit of the cooling circuit of the two parallel cooling circuits independently of each other, are two coolant directly from the engine water tank (10) is cooled.
2.根据权利要求1所述的带级间冷却器的双级增压发动机,其特征在于:所述预压缩进气冷却回路包括发动机水箱(10)、水栗(9)、级间冷却器(4)和节温器(8)。 2 with interstage two-stage supercharged engine cooler according to claim 1, wherein: the pre-compressed intake air of the engine cooling circuit comprising a tank (10), water chestnut (9), inter-stage cooler (4) and the thermostat (8).
3.根据权利要求1或2所述的带级间冷却器的双级增压发动机,其特征在于:所述压缩进气冷却回路包括发动机水箱(10)、水栗(9)、发动机出水总管(13)和节温器(8)。 The two-stage supercharging with interstage engine or cooler according to claim 12, wherein: said compressed intake air of the engine cooling circuit comprising a tank (10), water chestnut (9), the engine water mains (13) and the thermostat (8).
CN201610019519.3A 2016-01-13 2016-01-13 Twin-stage supercharged engine with interstage cooler CN105649756A (en)

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