CN205841043U - Internal combustion engine system - Google Patents
Internal combustion engine system Download PDFInfo
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- CN205841043U CN205841043U CN201620244697.1U CN201620244697U CN205841043U CN 205841043 U CN205841043 U CN 205841043U CN 201620244697 U CN201620244697 U CN 201620244697U CN 205841043 U CN205841043 U CN 205841043U
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- waste gas
- cooler
- exhaust gas
- internal combustion
- combustion engine
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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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Abstract
This utility model relates to internal combustion engine system.Internal combustion engine system includes explosive motor, cooler for recycled exhaust gas and heater.Cooler for recycled exhaust gas is positioned at the downstream of Exhuster of engine, and cooler for recycled exhaust gas is configured to receive the waste gas from explosive motor.Heater is positioned at the downstream of Exhuster of engine and the upstream of cooler for recycled exhaust gas, and is configured to add hot waste gas.The waste gas of heating is transported in cooler for recycled exhaust gas.
Description
Technical field
The disclosure relates generally to waste gas recirculation (EGR) system being used together with explosive motor.More specifically
Ground, the disclosure is for the system for reducing EGR condensation.
Background
Explosive motor (such as natural gas engine, diesel engine etc.) generally includes egr system, and it is for making the one of waste gas
Partial recirculation returns in engine cylinder to reduce from electromotor nitrogen oxides (NOx) emission out and to meet NOx row
Put regulation (such as Europe 6 emission request to natural gas engine).When waste gas is cooled, NOx reduces further, because NOx shape
Temperature is sensitive in pairs.Egr system can use one or more cooler for recycled exhaust gas to cool down waste gas.But, such system can
Cause the condensation of water vapour in the offgas, and thus the water droplet that produces damage and be probably compressor impeller, EGR valve and at EGR
Other parts in system.
General introduction
First group of embodiment relates to the explosive motor including explosive motor, cooler for recycled exhaust gas and heater
System.Cooler for recycled exhaust gas is positioned at the downstream of electromotor, and cooler for recycled exhaust gas is configured to receive from internal combustion
The waste gas of electromotor.Heater is positioned at the downstream of electromotor and the upstream of cooler for recycled exhaust gas, and it is useless to be configured to heating
Gas.The waste gas of heating is transported in cooler for recycled exhaust gas.
Internal combustion engine system can include the temperature sensor being positioned at the downstream of cooler for recycled exhaust gas, temperature sensor
The EGT of waste gas recirculation feed flow from cooler for recycled exhaust gas to inlet manifold can be monitored.Temperature sensor can be by
The EGT monitored is sent to control unit of engine.Control unit of engine can produce control signal with at least part of base
In the EGT monitored to control heater.Control unit of engine can produce control signal with when being supervised by heater
Waste gas is begun to warm up when the EGT surveyed is less than threshold value.Control unit of engine can produce control signal to work as heater
Stop when the EGT of monitoring is within the scope of preferred temperature adding hot waste gas.
Heater can heat the waste gas of the porch at cooler for recycled exhaust gas.
Internal combustion engine system may be included in the downstream of cooler for recycled exhaust gas and the waste gas of the upstream of temperature sensor
Recycle valve.Exhaust gas recirculation valve can be based partially on one or more operating conditions of explosive motor by control unit of engine
Control.
Waste gas can be heated to preferred temperature by heater so that in cooler for recycled exhaust gas and in exhaust gas recirculation valve
The condensation at place can be reduced or prevented.
Second group of embodiment relates to internal combustion engine system, and it includes being configured to receive giving up from explosive motor
The cooler for recycled exhaust gas of gas and positioned abreast with cooler for recycled exhaust gas and be configured to optionally will be certain
The waste gas recirculation by-pass valve of cooler for recycled exhaust gas is walked around in the waste gas shunting of amount.
Internal combustion engine system can include that at least one in multiple operating condition based on electromotor is to waste gas recirculation
Bypass valve provides the control unit of engine of control signal.Operating condition can include fuel level, load, temperature, start machine speed
Degree, throttle valve position, admission pressure, engine coolant liquid level, delivery temperature or a combination thereof.With cold by waste gas recirculation
But the waste gas after device is compared, and can have higher temperature by the waste gas of waste gas recirculation by-pass valve shunting.
Internal combustion engine system may additionally include the exhaust gas recirculation valve in the downstream of cooler for recycled exhaust gas.Waste gas follows again
Ring valve can receive from waste gas recirculation by-pass valve and the waste gas of cooler for recycled exhaust gas.Shunted by waste gas recirculation by-pass valve
This certain amount of waste gas can increase the temperature at exhaust gas recirculation valve.
3rd group of embodiment relates to internal combustion engine system, it include explosive motor, be configured to receive come spontaneous
The turbine of the waste gas of motivation and in the downstream of turbine and be configured to receive the catalyst converter of the waste gas from turbine.Internal combustion
Engine system also includes: at the cooler for recycled exhaust gas in the downstream of catalyst converter, cooler for recycled exhaust gas is configured to cold
But waste gas；And the bypass valve in the downstream at catalyst converter, bypass valve is configured to walk around cooler for recycled exhaust gas by necessarily
The uncooled waste gas of amount is directed to the exhaust gas recirculation valve in the downstream at cooler for recycled exhaust gas.
Internal combustion engine system may also include and controls bypass valve so that the electromotor that passes through of a certain amount of uncooled waste gas
Control unit.Control unit of engine can be at least partially based on the operating condition of electromotor to produce control signal for bypass valve.
Uncooled waste gas can have preventing or reduce the temperature of condensation at exhaust gas recirculation valve.
Bypass valve can guide uncooled waste gas to walk around cooler for recycled exhaust gas when EGT is less than threshold value.
Internal combustion engine system may also include low tension loop gas recirculation system, it include cooler for recycled exhaust gas and
Bypass valve.
Accompanying drawing is sketched
According to combining explained below and the claims that accompanying drawing is carried out, the aforementioned and further feature of the disclosure will become
Must be more fully apparent from.Understand that the several realizations according to the disclosure only described by these accompanying drawings, and be therefore not considered as its model
The restriction enclosed, will describe the disclosure by the use of accompanying drawing with extra particularity and details.
Fig. 1 is the diagram of the example internal combustion engine system according to embodiment of the present disclosure.
Fig. 2 is the diagram of the example internal combustion engine system according to embodiment of the present disclosure.
Fig. 3 is the diagram of the example internal combustion engine system according to embodiment of the present disclosure.
Describe in detail
In order to promote the purpose of the understanding of the principle of the disclosure, referring now to embodiment illustrated in the accompanying drawings, and
Specific language will be used for being described.It is to be understood, however, that not it is intended that the restriction of scope of this disclosure.Herein
Expection as it relates to those of skill in the art usual it is appreciated that to shown in the change of embodiment and amendment
And the further application of the principle of the disclosure.
In the various systems that disclosed herein is the explosive motor reduced or prevent EGR from condensing.According to embodiment, have
The internal combustion engine system of egr system is configured to a part for the waste gas by the one or more cylinders from explosive motor
It is directed to cooler for recycled exhaust gas.Waste gas is by being positioned at the heater of the upstream of EGR cooler.Heater is configured to cold at EGR
But the waste gas of the porch of device is heated to preferred temperature.The waste gas of heating reduces in various parts (such as at cooler for recycled exhaust gas
In, in EGR valve and in other parts) EGR condensation.Egr system also includes monitoring EGT in EGR inlet air flow
, the temperature sensor in the downstream being positioned at cooler for recycled exhaust gas.Temperature sensor provides feedback to control unit of engine (ECU).
ECU is configured to control heater to heat the entrance at cooler for recycled exhaust gas based on the temperature instruction received from temperature sensor
The waste gas at place.
According to embodiment, internal combustion engine system includes low tension loop (LPL) egr system.LPLEGR system includes connecing
Receive the one or more cylinders from electromotor waste gas, turbine in the downstream of electromotor.Turbine drives compressor
It is compressed in the charger-air cooler in the downstream of compressor with the mixture by fresh air and EGR gas.Mix is new
Fresh air and EGR gas are cooled down by charger-air cooler and are directed into EGR inlet manifold by intake valve.Pass through turbine
Waste gas be directed into the ternary catalyzing unit in the downstream at turbine.From the part of waste gas of ternary catalyzing unit via aerofluxus
Valve is directed into air.Another part from the waste gas of ternary catalyzing unit is directed into the EGR in the downstream at ternary catalyzing unit
Cooler.Another part from the waste gas of ternary catalyzing unit is directed into cooler for recycled exhaust gas bypass valve to walk around cooler for recycled exhaust gas stream
Dynamic.Cooler for recycled exhaust gas bypass valve is configured to guide a certain amount of waste gas to pass through to walk around cooler for recycled exhaust gas so that this is a certain amount of
Waste gas is not cooled to increase EGR gas temperature.The EGR gas with higher temperature reduces in cooler for recycled exhaust gas and EGR cooling
Condensation in the EGR valve in the downstream of device bypass valve.
According to embodiment, internal combustion engine system includes high tension loop (HPL) egr system.HPLEGR system is configured
Become to be directed to a part for the waste gas of the one or more cylinders from electromotor cooler for recycled exhaust gas and by from the one of electromotor
Another part of the waste gas of individual or multiple cylinder is directed to cooler for recycled exhaust gas bypass valve to be passed through to walk around cooler for recycled exhaust gas.From
The EGR gas cooled down of cooler for recycled exhaust gas and the uncooled EGR gas from cooler for recycled exhaust gas bypass valve are directed at EGR
The EGR valve in the downstream of cooler and cooler for recycled exhaust gas bypass valve.Uncooled EGR gas increases in EGR valve with under EGR valve
Trip various EGR parts at EGR gas temperature so that the condensation in EGR valve and in other EGR parts can be reduced or
Prevent.
Fig. 1 is the diagram of the example of the internal combustion engine system 100 according to embodiment of the present disclosure.Explosive motor system
System 100 includes electromotor 101.Electromotor 101 includes such as to reduce the NOx emission from internal combustion engine system 100
Waste gas recirculation (EGR) system.Electromotor 101 is any kind of explosive motor, and can be that such as stoichiometry is started
Machine, petrol engine, natural gas engine or Diesel engine.In some embodiments, electromotor 101 is lean-combustion engine
(such as lean-burn gasoline engines or natural-gas electromotor).Electromotor 101 include multiple cylinder (such as cylinder 102a, 102b,
102c, 102d, 102e and 102f, it is referred to herein as 102a-102f sometimes).The quantity of cylinder can be suitable for accordingly
Any quantity of electromotor, and arrange it can is any suitable layout.Only for explanation, in the embodiment of figure 1
The diagram of electromotor 101 includes in-line arrangement 6 cylinder arrangement (cylinder 102a-102f).
Electromotor 101 receives feed flow 104 by inlet manifold 106.In some embodiments, feed flow 104 includes
The fuel in path 108 is injected, from the EGR gas of EGR induction pathway 110 with from air induction path 112 from fuel
Fresh air.In some embodiments, fuel can be injected directly in cylinder.Such as, explosive motor 101 can include
For each cylinder with the fuel injector (not shown) that fuel is directly injected in cylinder.
Electromotor 101 is burnt the fuel of mixing, fresh air and the EGR gas received by inlet manifold 106 producing
Waste gas.A part for waste gas is directed in exhaust stream path 132.Exhaust stream path 132 guides waste gas to pass through turbine 128.
The exhaust gas-driven turbine machine 128 passed through is with the fresh air 134 being compressed in compressor 126, and the air of compression is by by increasing
Pressure air path 111 and air induction path 112 provide inlet manifold 106.Pressurized air path 111 includes receiving from pressure
The air of the compression of contracting machine 126, charger-air cooler 120 in the downstream of compressor 126.Charger-air cooler 120
It is configured to the air of cooling compression.Charger-air cooler 120 can be that water (engine coolant) overlaps cooler, air arrives
Air cooler or any other type of cooler.Intake valve 116 is positioned at the downstream of charger-air cooler 120.Intake valve
116 are configured to control the flow of fresh air in air induction path 112.
It is directed in ternary catalyzing unit 124 by the exhaust stream 132 of turbine 128.Ternary catalyzing unit 124 is configured to
Conversion waste gas is to reduce NOx, carbon monoxide (CO), total hydrocarbon (THC) or to comprise other polluter (such as second in the offgas
Aldehyde, formaldehyde, acrylic aldehyde and methanol).In some embodiments, the waste gas changed is directed into other EGR parts or is released
It is put in air.
Engine system 101 is further configured to a part for the waste gas produced by electromotor 101 is directed to EGR flow path
In 130.EGR flow path 130 is configured to, by heater 122, this of waste gas is directed partially into cooler for recycled exhaust gas 118.Heating
Device 122 is configured to the waste gas in EGR flow path is heated to preferred temperature.Heater is by control unit of engine (ECU)
138 control.Heater 122 can be located at the entrance of cooler for recycled exhaust gas 118.The waste gas of heating is directed into cooler for recycled exhaust gas 118
In.In some embodiments, engine system 100 includes being added by receptions of both series, parallel or series connection and parallel connection configuration
The more than one cooler for recycled exhaust gas 118 of the waste gas of heat.
The waste gas of heating reduces or prevents the condensation in various engine components and EGR parts.Such as, cool down from EGR
Device 118 condensate quantity out is but not limited to the coolant temperature in cooler for recycled exhaust gas 118, EGR quality flow velocity and waste gas
The function of absolute humidity.The waste gas of heating increases the coolant temperature in cooler for recycled exhaust gas 118 so that from cooler for recycled exhaust gas
The amount of 118 condensates out reduces.By this way, less condensate is sent to the components downstream of engine system
In.
EGR flow path 130 is additionally included in the EGR valve 114 in the downstream of cooler for recycled exhaust gas 118.EGR valve 114 is configured to regulation
EGR flow 130 also thus also regulates exhaust stream 132.How waste gas for heating reduces or prevents another example of condensation, passes
The waste gas of the heating of cooler for recycled exhaust gas 118 is directed into EGR valve 114, and heat reduces the condensation in EGR valve 114.Additionally, because of
Waste gas for heating reduces the amount from cooler for recycled exhaust gas condensate out, is transported to the less of EGR valve 114 so existing
Condensate, this reduces the corrosion in EGR valve 114 further.
Additionally, through the waste gas of the heating of cooler for recycled exhaust gas 118 and EGR valve 114 enter EGR feed flow path 110 and with combustion
Material feed flow 108 and fresh air feed flow 112 combine and are provided to inlet manifold 106；Accordingly, because it is right by heater 22
The heating of waste gas and the condensation of minimizing that causes cause the condensation of the minimizing in inlet manifold 106 and less condensate defeated
Deliver in cylinder (such as 102a-102f).
Temperature sensor 136 is positioned at the downstream of EGR valve 114 and is configured to monitoring EGR in EGR induction pathway 110
The EGT of stream.Temperature sensor 136 is configured to be sent to temperature signal ECU 138.ECU 138 is configured at least
Be based partially in EGR induction pathway 110 EGT (as by from temperature sensor 136 temperature signal indicate)
Heater 122 is produced control signal.The waste gas of the porch at cooler for recycled exhaust gas 118 is added by control signal command heater 122
Heat is to preferred temperature so that the condensation in the various parts of cooler for recycled exhaust gas 118, EGR valve 114 and engine system 100 can quilt
Reduce or prevent.Can determine based on the operating condition of the EGT in EGR induction pathway 110 and engine system 100
Expectation EGT in the porch of cooler for recycled exhaust gas 118.
Exhaust gas temperature sensor 136 is configured to user-defined mode (the most constantly, periodically etc.) monitoring
EGT.The EGT monitored is provided to ECU 138.ECU 138 is configured to based on the EGT received
Produce control signal.Such as, ECU 138 can be configured to will order in response to receiving the EGT less than lower temperature threshold
The control signal making the waste gas that heater 122 begins to warm up porch at cooler for recycled exhaust gas 118 is sent to heater 122, wherein
The lower end of the lower temperature threshold instruction wherein scope of the temperature that condensation can be reduced or prevent in the parts of egr system.For
Another example, ECU 138 can be configured in response to receiving higher than upper temperature threshold (the such as behaviour to the parts of egr system
The temperature extremes made or the temperature extremes of current operational conditions being based partially on electromotor 101) EGT and to heater
122 produce command heater 122 stops the control signal of heating.For another example, ECU 138 can be configured in response to connecing
Receive the delivery temperature in expected range and heater 122 is produced command heater 122 and stops the control signal of heating.Logical
Often can be at least partially based on the operating condition of electromotor 101 to determine that temperature threshold and scope are (such as at the example provided
In).
Fig. 2 is the diagram of the example of the internal combustion engine system 200 according to embodiment of the present disclosure.Explosive motor system
System 200 includes LPL (low tension loop) egr system.LPL egr system includes that the turbine with compressor 216 and turbine 218 increases
Depressor.One or more cylinders that turbine 218 is received from electromotor 201 by exhaust stream path 220 (such as have herein
Time be referred to as in cylinder 202a, 202b, 202c, 202d, 202e and 202f of 202a-202f one or more) waste gas.Send out
Motivation 201 can be any kind of explosive motor.Electromotor 201 can be with electromotor 101 phase as described with regard to FIG. 1
With.
Via exhaust stream path 220 by the exhaust gas-driven turbine machine 218 of turbine 218 to drive compressor 216 to incite somebody to action
The combination of fresh air 228 and EGR flow 232 is compressed in supercharging flow path 234.Supercharging flow path 234 is fluidly by compressor
216 are coupled with charger-air cooler 214.Supercharging flow path 234 will include fresh air and the EGR gas of compression
Supercharging stream is directed in charger-air cooler 214.Supercharging stream is cooled down by charger-air cooler 214 and is directed in supercharging
The intake valve 212 in the downstream of air cooler 214.
Intake valve 212 is configured to the various operating parameters according to engine system 200 with expectation flow rate regulation at EGR
The supercharging stream cooled down in feed flow path 210.Supercharging stream in EGR feed flow path 210 and the fuel 208 injected
Combination is to be formed at the feed flow in manifold feed flow path 206, and feed flow is directed in inlet manifold 204.One
In a little embodiments, fuel is injected directly in each cylinder (such as 202a-202f) of electromotor 201.
Waste gas in exhaust stream path 220 is by turbine 218 and is directed in ternary catalyzing unit 222.Ternary is urged
Change device 222 to be configured to change waste gas to reduce NOx, CO, THC or to comprise other polluter in the offgas.It is positioned at ternary
The air bleeding valve 224 in the downstream of catalyst converter 222 is configured to draw a part for the waste gas changed from ternary catalyzing unit 222
Lead air.A part from the waste gas changed of ternary catalyzing unit 222 is directed into and is positioned at ternary catalyzing unit 222 times
In the cooler for recycled exhaust gas 226 of trip.Cooler for recycled exhaust gas 226 is configured to cool down waste gas.Cooler for recycled exhaust gas 226 can be any kind of
Cooler for recycled exhaust gas (cooler for recycled exhaust gas 118 the most as described with regard to FIG. 1).
Engine system 200 also includes that being configured to optionally route a certain amount of waste gas walks around cooler for recycled exhaust gas 226
EGR bypass valve 236.In some embodiments, EGR bypass valve 236 is can be by with in on/off mode or with modulation methods
Any kind of valve that formula uses, wherein in response to the control signal received from control unit of engine (ECU) 238, tensile force
Pneumatically or electrically supplied with closing forces.ECU 238 is configured to various operating condition based on electromotor 201 (such as
Such as engine fuel level, load, temperature, erpm, throttle valve position, suck air pressure, electromotor
Coolant or delivery temperature) produce control signal.
EGR bypass valve 236 is configured to make the waste gas of desired amount pass through so that the waste gas of this amount is not by cooler for recycled exhaust gas
226 coolings.EGR valve 230 is positioned at the downstream of cooler for recycled exhaust gas 226 and EGR bypass valve 236.EGR valve 230 is configured to regulate
EGR flow in EGR flow path 232.It is directed into EGR valve 230 by the uncooled EGR gas of EGR bypass valve 236 and increases
The temperature of EGR valve 230 so that condensation can be reduced in EGR valve 230 or prevent.Uncooled waste gas is directed into compressor
In 216 and increase the temperature in compressor 216, this also reduces or prevents in compressor 216 and charger-air cooler 214
Condensation.The minimizing of the condensation in EGR valve 230, compressor 216 or charger-air cooler 214 or prevent from preventing it rotten
Erosion.
When ECU 238 identifies the operating condition of the probability that instruction condensation is formed, ECU 238 produces control signal,
Its order bypass valve 236 is opened and is passed through for making the waste gas of desired amount walk around cooler for recycled exhaust gas 226 so that the waste gas of this amount
Do not cooled down by cooler for recycled exhaust gas 226, reduce to provide or prevent at EGR valve 230, compressor 216 or charger-air cooler 214
In the heat of condensation.
Fig. 3 is the diagram of the example of the internal combustion engine system 300 according to embodiment of the present disclosure.Explosive motor system
System 300 includes HPL (high tension loop) egr system.HPL egr system includes that the turbine with turbine 322 and compressor 320 increases
Depressor.One or more cylinders that turbine 322 is received from electromotor 301 by exhaust stream path 326 (such as have herein
Time be referred to as 302a, 302b, 302c, 302d, 302e and 302f of 302a-302f) exhaust stream.Electromotor 301 can be with pass
In the electromotor 101 described in Fig. 1 or identical about the electromotor 201 described in Fig. 2.Exhaust stream is urged to ternary by turbine 322
Change device 324.Ternary catalyzing unit 324 could be for reducing NOx, CO or HTC emission before waste gas is released in air
Or comprise any equipment or the parts of other polluter in the offgas.
Exhaust stream drives turbine 322, and it transfers to drive compressor 320 to increase so that flow of fresh air 318 to be compressed to air
In pressure cooler 316.Charge cooler 316 could be for any kind of cooler of the air stream of cooling compression.Such as,
Charge cooler 316 can with about the charge cooler 120 described in Fig. 1 or about the charger-air cooler 214 described in Fig. 2
Identical.The flow of fresh air of cooling is directed into air inlet valve 314.Air inlet valve 314 is configured to control to enter at air
To the air feed stream in flow path 310.
HPL egr system is configured to will be from one or more cylinders (such as 302a-by EGR flow path 328
A part for waste gas 302f) is directed in cooler for recycled exhaust gas 330.Cooler for recycled exhaust gas 330 can be arranged to cool down waste gas
Any kind of cooler.HPL egr system is further configured to a part for waste gas is directed to EGR bypass valve 334.By EGR
Logical valve 334 is joined and is set to make a part for waste gas to walk around cooler for recycled exhaust gas 330 so that the part of this waste gas is not by cooler for recycled exhaust gas
330 coolings.EGR bypass valve 334 is similar to about the EGR bypass valve 236 described in Fig. 2.EGR bypass valve 334 is controlled by ECU 336
System.ECU 336 be configured to monitor the various operating conditions of electromotor 301 operating condition based on electromotor 301 to EGR by
Logical valve 334 produces control signal.Such as, the operating condition of the electromotor 301 of the formation that may result in condensation is detected as ECU 336
Time (the such as low exhaust temperature in electromotor 301), ECU 336 can be configured to order EGR bypass valve 334 is opened and made
The control signal that the waste gas of specified quantitative passes through is sent to EGR bypass valve 334.ECU 336 can be configured to such as ECU 336
Detect that the operating condition of electromotor 301 sends by order EGR time (such as delivery temperature is higher than upper threshold value) in expected range
Logical valve 334 cuts out and stops the control signal making waste gas pass through.
It is directed into EGR valve 332 by the uncooled waste gas of EGR bypass valve 334.EGR valve 332 is configured to control
EGR feed flow in EGR feed flow path 312.Uncooled waste gas increases the temperature at EGR valve 332 so that in EGR valve
Condensation at 332 can be reduced or prevented, thus prevent or reduce corrosion.Uncooled waste gas also can increase at EGR bypass valve
The temperature of the parts in the downstream of 334.ECU 36 be configured to control EGR bypass valve 334 so that the waste gas of desired amount passes through, make
Obtain the expectation gas temperature at EGR valve 332 can be maintained.
Fluid in EGR feed flow path 312, fuel injection flow path 308 and air feed flow path 310 is combined
Become to be provided to the feed flow path 306 of inlet manifold 304.The EGR gas of the mixing in inlet manifold 304, fuel and new
Fresh air has expectation gas temperature and nothing or the condensate reduced.
Although showing the disclosure by the example of six, but the disclosure can be applicable to: have two or
The electromotor of more than two cylinder, including having those electromotors less than or greater than six cylinders；Various engine types, example
Such as I-6, V-6, V-8 etc.；There is the electromotor of different cylinder firings orders；Diesel engine, petrol engine or other class
The electromotor of type；And the electromotor of any size.
In some implementations, system as herein described or process can include being configured to perform some operation as herein described
Control unit of engine.In some implementations, control unit of engine is formed and includes having memorizer, process and communication hardware
The parts of processing subsystem of one or more calculating equipment.Control unit of engine can be individual equipment or distributed
Equipment, and the function of control unit of engine can be performed by hardware and/or be performed as non-transitory computer-readable store
Computer instruction on medium.
In some implementations, control unit of engine includes the behaviour being configured to functionally perform control unit of engine
The one or more circuit made.The independence of structure of the aspect of control unit of engine is emphasized including the description herein of circuit,
And the operation of controller and a packet of responsibility are described.Other packet performing similar total operation is understood to be in the application
In the range of.Circuit can be realized and/or be implemented as the meter in non-transitory computer-readable storage media within hardware
Calculation machine instructs, and circuit can be distributed in the middle of whole various hardware or computer based parts.
Example and non-limiting circuit realiration element include providing the sensor of any value determined herein, providing conduct
The sensor of any value of the predecessor of the value determined herein, the data link including communication chip and/or the network hardware, vibration
Crystal, communication link, cable, twisted pair, coaxial distribution, shielding distribution, transmitter, receiver and/or transceiver, logic
Circuit, hard-wired logic, reconfigurable logic circuit in the specific non-transitory state configured according to Electrical specifications,
Including at least electric, hydraulic pressure or any actuator of pneumatic actuator, solenoid, operational amplifier, simulation control element (bullet
Spring, wave filter, integrator, adder, divider, booster element) and/or digital controling element.
Although this specification comprises much specifically realizes details, but these are not necessarily to be construed as being advocated
The restriction of the scope of content, and it is to be interpreted the description of the feature specific to specific implementation.In this manual separately
Some feature described in environment realized also can be realized in single realization in combination.On the contrary, at the environment of single realization
Described in various features also dividually or can be realized with any suitable sub-portfolio in multiple realizations.Although additionally,
Feature can be described as with specific combinations and even initially advocate so above, but from the group advocated
The one or more features closed can be removed in some cases from combination, and the combination advocated can point to subgroup
Close or the modification of sub-portfolio.
The those of skill in the art checking the disclosure it should be understood that various feature is described and advocates and not by this
The scope of a little features is limited to provided exact numerical scope, except as otherwise noted.Correspondingly, theme that is described and that advocate
Insubstantial or unessential amendment or change be considered as at the model of the present utility model enumerated the most in the following claims
Within enclosing.It is moreover observed that, in the case of term " device " uses the most in the claims, in the claims
Limit " device the adds function " restriction being not necessarily to be construed as constituting according to United States patent law.
It is important to note that the structure of the system shown in various exemplary realizations with being arranged in is only in nature
Illustrative and not restrictive.Expect to protect and belong to the spirit of described realization and/or all changes of scope and amendment.
Should be understood that some features are not likely to be necessity, and the realization lacking various feature can be contemplated in scope of the present application,
This scope is defined by the appended claims.Should be understood that the feature that describes in one embodiment can also be by with this area
In the mode that understood of those of ordinary skill merge with the feature from another embodiment and/or combine.
Claims (22)
1. an internal combustion engine system, including:
Explosive motor；
Turbine, it is configured to receive a part of waste gas from described explosive motor；
Catalyst converter, it is in the downstream of described turbine and is configured to receive the waste gas from described turbine；
Cooler for recycled exhaust gas, it is positioned at the downstream of described explosive motor, and described cooler for recycled exhaust gas is configured to
Receive another part waste gas from described explosive motor；And
Heater, its downstream being positioned at described explosive motor and the upstream of described cooler for recycled exhaust gas, described heater
Being configured to heat described another part waste gas, heated waste gas is transported in described cooler for recycled exhaust gas.
2. internal combustion engine system as claimed in claim 1, also includes being positioned at the downstream of described cooler for recycled exhaust gas
Temperature sensor, described temperature sensor is configured to monitor from the waste gas of described cooler for recycled exhaust gas to inlet manifold again
The EGT of circulation feed flow.
3. internal combustion engine system as claimed in claim 2, wherein said temperature sensor is configured to the waste gas of monitoring
Temperature is sent to control unit of engine.
4. internal combustion engine system as claimed in claim 3, wherein said control unit of engine is configured at least partly
EGT based on described monitoring produces the control signal controlling described heater.
5. internal combustion engine system as claimed in claim 4, wherein said control unit of engine is configured to when described prison
It is that described heater produces the control signal beginning to warm up described waste gas when the EGT surveyed is less than threshold value.
6. internal combustion engine system as claimed in claim 4, wherein said control unit of engine is configured to when described prison
It is that described heater produces the control signal stopping heating described waste gas when the EGT surveyed is in the range of preferred temperature.
7. the internal combustion engine system as described in any one in claim 1,2,3,4,5 or 6, wherein said heater is joined
It is set to the heating described waste gas in the porch of described cooler for recycled exhaust gas.
8. the internal combustion engine system as described in any one in claim 3,4,5 or 6, is additionally included in described waste gas recirculation
The downstream of cooler and the exhaust gas recirculation valve of the upstream in described temperature sensor.
9. internal combustion engine system as claimed in claim 8, wherein said exhaust gas recirculation valve is controlled single by described electromotor
Unit is based in part on one or more operating conditions of described explosive motor and controls.
10. internal combustion engine system as claimed in claim 8, wherein said heater is configured to be heated to described waste gas
Preferred temperature so that the condensation in described cooler for recycled exhaust gas and at described exhaust gas recirculation valve can be reduced or
Prevent.
11. 1 kinds of internal combustion engine systems, including:
Turbine, it is configured to receive a part of waste gas from explosive motor；
Catalyst converter, it is in the downstream of described turbine and is configured to receive the waste gas from described turbine；
Cooler for recycled exhaust gas, it is in the downstream of described explosive motor and is configured to receive from the one of explosive motor
Portion；
Waste gas recirculation by-pass valve, it is positioned abreast with described cooler for recycled exhaust gas and is configured to optionally divide
Flow a certain amount of waste gas and walk around described cooler for recycled exhaust gas；And
Exhaust gas recirculation valve in the downstream of described cooler for recycled exhaust gas.
12. internal combustion engine systems as claimed in claim 11, also include control unit of engine, and described electromotor controls single
Unit be configured in multiple operating condition based on described explosive motor at least one to described waste gas recirculation by-pass valve
Control signal is provided.
13. internal combustion engine systems as claimed in claim 12, in wherein said multiple operating conditions described at least one
Including fuel liquid level, load, engine temperature, engine speed, throttle valve position, admission pressure, engine coolant liquid level,
Delivery temperature or a combination thereof.
14. internal combustion engine systems as described in any one in claim 11,12 or 13, wherein, and by described waste gas
Waste gas after recycle cooler is compared, and has higher temperature by the waste gas of described waste gas recirculation by-pass valve shunting.
15. internal combustion engine systems as claimed in claim 11, wherein said exhaust gas recirculation valve receives from described waste gas
Recirculation by-pass valve and the waste gas of described cooler for recycled exhaust gas.
16. internal combustion engine systems as claimed in claim 15, wherein by the institute of described waste gas recirculation by-pass valve shunting
State a certain amount of waste gas and increase the temperature at described exhaust gas recirculation valve.
17. 1 kinds of internal combustion engine systems, including:
Explosive motor；
Turbine, it is configured to receive the waste gas from described explosive motor；
Catalyst converter, it is in the downstream of described turbine and is configured to receive the described waste gas from described turbine；
Cooler for recycled exhaust gas, it is in the downstream of described catalyst converter, and described cooler for recycled exhaust gas is configured to cool down institute
State waste gas；And
Bypass valve, it is in the downstream of described catalyst converter, and described bypass valve is configured to walk around a certain amount of uncooled waste gas
Described cooler for recycled exhaust gas and be directed to the exhaust gas recirculation valve in the downstream at described cooler for recycled exhaust gas.
18. internal combustion engine systems as claimed in claim 17, also include control unit of engine, and described electromotor controls single
Unit is configured to control described bypass valve so that a certain amount of uncooled waste gas passes through.
19. internal combustion engine systems as claimed in claim 18, wherein said control unit of engine is further configured at least
The operating condition being based partially on described explosive motor to produce control signal for described bypass valve.
20. internal combustion engine systems as described in any one in claim 17,18 or 19, wherein said uncooled waste gas
There is preventing or reduce the temperature of condensation at described exhaust gas recirculation valve.
21. internal combustion engine systems as described in any one in claim 17,18 or 19, wherein said bypass valve is joined
It is set to when EGT is less than threshold value guide uncooled waste gas to walk around described cooler for recycled exhaust gas.
22. internal combustion engine systems as described in any one in claim 17,18 or 19, also include comprising described waste gas again
The low tension loop gas recirculation system of recirculation cooler and described bypass valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620244697.1U CN205841043U (en) | 2016-03-28 | 2016-03-28 | Internal combustion engine system |
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| CN201620244697.1U CN205841043U (en) | 2016-03-28 | 2016-03-28 | Internal combustion engine system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111237100A (en) * | 2020-03-09 | 2020-06-05 | 广西玉柴机器股份有限公司 | EGR valve and mixer heating control method and system |
| DE102021117847A1 (en) | 2021-07-09 | 2023-01-12 | Volkswagen Aktiengesellschaft | Process for exhaust aftertreatment of a vehicle |
-
2016
- 2016-03-28 CN CN201620244697.1U patent/CN205841043U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111237100A (en) * | 2020-03-09 | 2020-06-05 | 广西玉柴机器股份有限公司 | EGR valve and mixer heating control method and system |
| DE102021117847A1 (en) | 2021-07-09 | 2023-01-12 | Volkswagen Aktiengesellschaft | Process for exhaust aftertreatment of a vehicle |
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