CN208595009U - The system of internal combustion engine system and the heat management for internal combustion engine - Google Patents

Abstract

The system of heat management this application involves internal combustion engine system and for internal combustion engine.The system of heat management for internal combustion engine includes controller.Controller is configured to determine at least one of turbocharger outlet temperature or engine load, determine whether turbocharger outlet temperature is lower than turbocharger outlet temperature threshold value and/or whether engine load is lower than engine load threshold value, and in response to determining that at least one of turbocharger outlet temperature or engine load are correspondingly lower than turbocharger outlet temperature threshold value or engine load threshold value, at least one cylinder in multiple cylinders of instructing engine runs under engine braking modes and the remaining cylinders in multiple cylinder is instructed to run in the normal mode.

Description

The system of internal combustion engine system and the heat management for internal combustion engine

Technical field

Present invention relates generally to for carrying out heat pipe to internal combustion engine using engine braking (engine brake) The system of reason.

Background technique

In order to reach discharge standard, engine system generally includes the post-processing for removing NOx from engine exhaust System.After-treatment system is typically heated to required temperature to handle engine exhaust.Heat management is for after improvement Treatment effeciency and engine is made to meet the key technologies of various emission regulations.

Utility model content

An aspect of this disclosure is related to a kind of internal combustion engine system.Internal combustion engine system includes controller and multiple Cylinder (a plurality of cylinders).Controller is configured to: determining the exhaust at the position in the downstream of multiple cylinders Temperature；Determine whether delivery temperature is lower than delivery temperature threshold value；And in response to determining that delivery temperature is lower than delivery temperature threshold value, At least one cylinder in multiple cylinders is instructed to run and instruct at engine braking modes (engine brake mode) Remaining cylinders in multiple cylinders are run at normal mode (normal mode).

In some embodiments, determine that the delivery temperature at the position in the downstream of multiple cylinders includes determining turbocharging Device outlet temperature, and determine whether delivery temperature is lower than delivery temperature threshold value includes whether determining turbocharger outlet temperature Lower than turbocharger outlet temperature threshold value.

In some embodiments, controller is configured in response to determining turbocharger outlet temperature not less than turbine Discharge temperature of super charger threshold value instructs multiple cylinders to run in the normal mode.

In some embodiments, controller is configured in response to turbocharger outlet temperature lower than turbocharger Outlet temperature threshold value determines the quantity by the cylinder run under engine braking modes in multiple cylinders.

In some embodiments, after internal combustion engine system further includes for handling the exhaust generated by multiple cylinders Processing system.

In some embodiments, turbocharger outlet temperature threshold value be predetermined and with make after-treatment system The temperature that can be run with desired transfer efficiency is associated.

In some embodiments, the cylinder under engine braking modes in multiple cylinders does not have fuel injection.

In some embodiments, the cylinder under engine braking modes does not burn.

In some embodiments, the cylinder in the normal mode in multiple cylinders has fuel injection.

In some embodiments, the cylinder combustion in the normal mode in multiple cylinders.

In some embodiments, internal combustion engine system further includes for measuring the one of turbocharger outlet temperature Or more temperature sensor.

In some embodiments, at least one cylinder in multiple cylinders is instructed to run simultaneously under engine braking modes And the remaining cylinders in the multiple cylinder of instruction run be additionally in response to determine engine load lower than engine in the normal mode Load threshold value.

In some embodiments, determine that the delivery temperature at the position in the downstream of multiple cylinders includes determining internal-combustion engine Delivery temperature at the position of the upstream of the oxidation catalyzer of machine system.

In some embodiments, determine that the delivery temperature at the position in the downstream of multiple cylinders includes determining internal-combustion engine Delivery temperature at the upstream of the selective catalytic reduction catalyst of machine system or the position of inside.

Another aspect of the disclosure is related to a kind of internal combustion engine system.The internal combustion engine system include controller and Multiple cylinders.Controller is configured to: determining that engine load, engine are run under the engine load；Determination is started airborne Whether lotus is lower than engine load threshold value；And it in response to determining that engine load is lower than engine load threshold value, instructs multiple At least one cylinder in cylinder is run under engine braking modes, and instructs the remaining cylinders in multiple cylinders normal It is run under mode.

In some embodiments, controller is further configured to determine that engine load is airborne not less than starting Lotus threshold value instructs multiple cylinders to run in the normal mode.

In some embodiments, controller is further configured to determine engine load lower than engine load Threshold value determines the quantity by the cylinder run under engine braking modes in multiple cylinders.

In some embodiments, after internal combustion engine system further includes for handling the exhaust generated by multiple cylinders Processing system.

In some embodiments, engine load threshold value is predetermined and has with enabling the engine to generate The engine load of the exhaust for the temperature that after-treatment system can be made to run with desired transfer efficiency is associated.

In some embodiments, the cylinder under engine braking modes in multiple cylinders does not have fuel injection.

In some embodiments, the cylinder under engine braking modes in multiple cylinders does not burn.

In some embodiments, the cylinder in the normal mode in multiple cylinders has fuel injection.

In some embodiments, the cylinder combustion in the normal mode in multiple cylinders.

In some embodiments, internal combustion engine system further includes for measuring the one or more of engine load Engine load sensor.

In some embodiments, at least one cylinder in multiple cylinders is instructed to run simultaneously under engine braking modes And the remaining cylinders in the multiple cylinder of instruction run be additionally in response to determine that turbocharger outlet temperature is low in the normal mode In turbocharger outlet temperature threshold value.

The other side also of the disclosure is related to a kind of system of heat management for internal combustion engine.The system packet Controller is included, which is configured to generate multiple cylinders of the control signal to control internal combustion engine.Controller is configured to: really Delivery temperature at the position in the downstream of fixed multiple cylinders；Determine whether delivery temperature is lower than delivery temperature threshold value；And response In determining that delivery temperature lower than delivery temperature threshold value, instructs at least one cylinder in multiple cylinders under engine braking modes It runs and the remaining cylinders in multiple cylinders is instructed to run in the normal mode.

In some embodiments, determine that the delivery temperature at the position in the downstream of multiple cylinders includes determining turbocharging Device outlet temperature, and determine whether delivery temperature is lower than delivery temperature threshold value includes whether determining turbocharger outlet temperature Lower than turbocharger outlet temperature threshold value.

In some embodiments, controller is further configured to determine that turbocharger outlet temperature is not less than Turbocharger outlet temperature threshold value, instructs multiple cylinders to run in the normal mode.

In some embodiments, controller is further configured to determine turbocharger outlet temperature lower than whirlpool Take turns discharge temperature of super charger threshold value, determine in multiple cylinders by the quantity of the cylinder run under engine braking modes and refer to The cylinder of the quantity is enabled to run under engine braking modes.

In some embodiments, which further includes the post-processing system for handling the exhaust generated by multiple cylinders System.

In some embodiments, turbocharger outlet temperature threshold value be predetermined and with make after-treatment system The temperature that can be run with desired transfer efficiency is associated.

In some embodiments, the cylinder under engine braking modes in multiple cylinders does not have fuel injection.

In some embodiments, the cylinder under engine braking modes in multiple cylinders does not burn.

In some embodiments, at least one cylinder in multiple cylinders is instructed to run simultaneously under engine braking modes And the remaining cylinders in the multiple cylinder of instruction runs be additionally in response to determining engine load and be less than start in the normal mode Machine load threshold value.

In some embodiments, determine that the delivery temperature at the position in the downstream of multiple cylinders includes the oxygen of determining system Change the delivery temperature at the position of the upstream of catalyst converter.

In some embodiments, determine that the delivery temperature at the position in the downstream of multiple cylinders includes the choosing of determining system Delivery temperature at the upstream of selecting property catalyst reduction catalyst device or the position of inside.

The another aspect of the disclosure is related to a kind of system of heat management for internal combustion engine.The system includes control Device, the controller are configured to generate multiple cylinders of the control signal to control internal combustion engine.Controller is configured to: determination is started Airborne lotus, engine are run under the engine load；Determine whether engine load is lower than engine load threshold value；And it rings , lower than engine load threshold value, at least one cylinder in multiple cylinders should be instructed in engine braking in determining engine load It is run under mode, and the remaining cylinders in multiple cylinders is instructed to run in the normal mode.

In some embodiments, controller is further configured to determine that engine load is airborne not less than starting Lotus threshold value instructs multiple cylinders to run in the normal mode.

In some embodiments, controller is configured in response to determining engine load lower than engine load threshold Value, determine in multiple cylinders by the number of cylinders run under engine braking modes and the cylinder that instructs the quantity is starting It is run under machine braking mode.

In some embodiments, which further includes the post-processing system for handling the exhaust generated by multiple cylinders System.

In some embodiments, engine load threshold value is predetermined and has with enabling the engine to generate The engine load of the exhaust for the temperature for enabling after-treatment system to run with desired transfer efficiency is associated.

In some embodiments, the cylinder under engine braking modes in multiple cylinders does not have fuel injection.

In some embodiments, the cylinder under engine braking modes in multiple cylinders does not burn.

In some embodiments, the cylinder in the normal mode in multiple cylinders has fuel injection and burns.

In some embodiments, at least one cylinder in multiple cylinders is instructed to run simultaneously under engine braking modes And the remaining cylinders in the multiple cylinder of instruction run be additionally in response to determine that turbocharger outlet temperature is low in the normal mode In turbocharger outlet temperature threshold value.

Detailed description of the invention

It will be become according to the preceding feature and other feature in conjunction with the description and appended claims below attached drawing, the disclosure It must be more fully apparent from.It should be understood that these attached drawings depict only several embodiments according to the disclosure and therefore should not be considered To limit the scope of the present disclosure, the disclosure will be described with other illustrating with details by using attached drawing.

Fig. 1 is to describe to be shown according to exemplary implementation scheme using the engine system that engine braking carries out heat management It is intended to.

Fig. 2 is the engine system that heat management is carried out using engine braking described according to another exemplary embodiment Schematic diagram.

Fig. 3 is the flow chart for describing the heat management process according to the internal combustion engine of exemplary implementation scheme.

Fig. 4 is the flow chart for describing the heat management process according to the internal combustion engine of another exemplary embodiment.

Specific embodiment

General with reference to attached drawing, show according to various illustrative embodiments for using in engine braking offer The system and method for burn engine heat management.Engine includes that multiple cylinders of execution burning are next defeated in order to provide required torque Power out.The exhaust that after-treatment system processing is generated from combustion process.After-treatment system needs the required temperature for handling exhaust Degree.For example, diesel engine can use selective catalytic reduction (SCR) to handle exhaust.When delivery temperature increases, SCR It can be more efficient.Therefore, the efficiency of after-treatment system can be significantly improved by increasing delivery temperature.

By engine braking is applied to one or more cylinders of internal combustion engine and by all load transfers extremely The remaining cylinders of engine, present disclose provides a kind of heat managements to increase turbocharger outlet temperature.When one or more When a cylinder operates in the case where engine braking, one or more cylinders do not receive fuel injection and do not burn, and And in order to meet the torque demand of engine, remaining cylinder is operated using more fuel.In this way, remaining cylinder is with more More power density operatings, and the exhaust with higher temperature is generated, which further improves SCR conversion efficiencies.

With reference to Fig. 1, the schematic diagram of the engine system 100 according to exemplary implementation scheme is depicted.Engine system 100 Including internal combustion engine 101.Internal combustion engine 101 is any kind of internal combustion engine, and may include such as diesel oil hair Motivation, petrol engine and/or natural gas engine.Internal combustion engine 101 include multiple cylinder 102a, 102b, 102c, 102d, 102e and 102f are referred to as cylinder 102.The quantity of cylinder 102 can be suitable for any quantity of engine.Cylinder 102 arrangement can be any suitable arrangement for engine, although being depicted in Fig. 1 according to exemplary implementation scheme Six cylinders with provided in-line.

According to specific embodiment depicted in figure 1, engine system 100 does not include exhaust gas recycling system.Start Machine system 100 includes inlet manifold 104, charger-air cooler 106, turbocharger, controller 118 and after-treatment system 114, turbocharger includes turbine 112 and compressor 108.Inlet manifold 104 is attached to internal combustion engine 101 and receives combustion Material injection and the fresh air from charger-air cooler 106.In some embodiments, fuel and fresh air into It is sufficiently mixed in gas manifold 104.Internal combustion engine 101 receives the mixed fuel and fresh air from inlet manifold 104.It is interior Mixed fuel and fresh air are ejected at least one cylinder in cylinder 102 by burn engine 101.At least one gas Torque needed for cylinder 102 burns and provides engine output.Internal combustion engine 101 generates from burning and is vented and is transported to exhaust Turbine 112.In some embodiments, turbocharger outlet temperature is measured in the exit of turbine 112.In some realities Apply in scheme, engine system 100 include for measure one at turbocharger outlet temperature and after-treatment system 114 or One or more temperature sensor (not shown) of more temperature.

Turbine 112 drives compressor 108 by from the received exhaust gas drive of internal combustion engine 101.Compressor 108 will Fresh air 120 is compressed in engine system 100, and fresh air is directed to charger-air cooler 106.Turbocharging Device can be any suitable turbocharger type, such as variable geometry turbocharger.In some embodiments, turbine Booster may include the combination of two or more turbocharger.

Exhaust is further directed to after-treatment system 114, to remove in exhaust extremely before being discharged to environment Small part pollutant.After-treatment system 114 includes any suitable after-treatment components, including various catalyst converters and filter, example Such as oxidation catalyzer (such as diesel oxidation catalyst), particulate filter (such as diesel particulate filter), SCR catalyst, ammonia Oxidation catalyzer (AMOX) etc..

Controller 118 is configured to send control signals to each cylinder of the internal combustion engine 101 to control engine 102.The control each cylinder 102 of signal instruction is to run under engine braking modes or in the normal mode.When cylinder exists When running under engine braking modes, cylinder not will do it any fuel injection or burning.In other words, engine braking modes Under cylinder do not consume fuel or generate torque.When cylinder is run in the normal mode, cylinder with also transport in the normal mode Capable other cylinders are coordinated to spray fuel and implement to burn to meet the torque demand of internal combustion engine 101.

In some embodiments, control signal is based at least partially on the generation of turbocharger outlet temperature.For example, working as When turbocharger outlet temperature is lower than predetermined temperature threshold, controller 118 generates control signal, at least one cylinder is instructed to exist It is run under engine braking modes and remaining cylinders is run in the normal mode.Predetermined temperature threshold depends on making after-treatment system 114 preferred temperatures that can be run with desired transfer efficiency.In other embodiments, control signal is based at least partially on At the position in multiple 102 downstreams of cylinder, but generated in the delivery temperature being different from the position that turbocharger exports.Example Such as, control signal can downstream and after-treatment system 114 based on cylinder 102 one or more after-treatment components (examples Such as, oxidation catalyzer, SCR etc.) the delivery temperature of upstream generate.In some embodiments, it can be based on SCR temperature, That is, delivery temperature in SCR catalyst generates control signal.When delivery temperature is lower than delivery temperature threshold value, controller 118 Control signal is generated, instructs that at least one cylinder is run under engine braking modes and remaining cylinders are transported in the normal mode Row.Delivery temperature threshold value depends on the phase at the relevant position for enabling after-treatment system 114 to run with desired transfer efficiency The delivery temperature of prestige.For example, SCR temperature threshold value depends on enabling SCR it is expected if temperature is measured just at SCR Conversion ratio operation desired SCR temperature.

In other embodiments, controller 118 is configured to be based at least partially on engine load level to generate control Signal processed.For example, when internal combustion engine 101 has the load level lower than scheduled engine load threshold value, controller 118 It is configured to generate control signal, instruction internal combustion engine 101 makes at least one cylinder run and make under engine braking modes Remaining cylinder is run in the normal mode.Scheduled engine load threshold value depends on desired engine load, the expectation Engine load so that internal combustion engine 101 is generated the exhaust with desired temperature, this has the row of desired temperature Gas enables after-treatment system 114 with the operation of desired transfer efficiency.

In some embodiments, controller 118 is configured to based on turbocharger outlet temperature and engine load water It is both flat to generate control signal.The quantity for the cylinder that control signal designation needs to run under engine braking modes.One In a little embodiments, control signal can indicate what the cylinder of the quantity needed to run under engine braking modes during this period Period.Controller 118 is configured to generate control signal in real time based on real-time engine operation condition.

With reference to Fig. 2, the schematic diagram of the engine system 200 according to exemplary implementation scheme is depicted.Engine system 200 Including internal combustion engine 201.Internal combustion engine 201 is any kind of internal combustion engine, and may include such as diesel oil hair Motivation, petrol engine and/or natural gas engine.Internal combustion engine 201 include multiple cylinder 202a, 202b, 202c, 202d, 202e and 202f are referred to as cylinder 202.The quantity of cylinder 202 can be suitable for any quantity of engine.Cylinder 202 arrangement can be any suitable arrangement for engine, although being depicted in Fig. 2 according to exemplary implementation scheme Six cylinders with provided in-line.

Engine system 200 includes exhaust gas recycling system (EGR).Engine system 200 includes inlet manifold 206, increases Aerial cooler 220, turbocharger, controller 228 and after-treatment system 218 are pressed, turbocharger includes connecting by axis 223 The turbine 222 and compressor 224 connect.Inlet manifold 206 is attached to internal combustion engine 201, and receives and come from intake channel 204 Mixed fresh air, fuel and EGR gas.Intake channel 204 is connected to air flue 212, and is gas-cooled from pressurizing air But device 106 receives fresh air.Intake channel 204 is also connected to EGR passage 210 and receives from exhaust outlet passages 208 EGR gas.In some embodiments, fuel, EGR gas and fresh air are sufficiently mixed in inlet manifold 206.

Internal combustion engine 201 receives the mixture of fuel from inlet manifold 206, EGR gas and fresh air. Mixture is ejected at least one of cylinder 202 by internal combustion engine 201.At least one cylinder 202 burns and provides Torque needed for engine output.Internal combustion engine 201 generates exhaust from burning, and at least first part of exhaust is transported to Turbine 222.In some embodiments, turbocharger outlet temperature is measured in the exit of turbine 222.In some realities Apply in scheme, engine system 200 include for measure one at turbocharger outlet temperature and after-treatment system 218 or One or more temperature sensor (not shown) of more temperature.

Internal combustion engine 201 makes at least second part of exhaust be transmitted back to inlet manifold across EGR passage 210.Some In embodiment, EGR passage 210 includes for controlling one or more EGR valves of the exhaust flowing in EGR passage 210 (not It shows).

Turbine 222 is by driving compressor 224 from the received exhaust gas drive of internal combustion engine 201, and by axis 223.Pressure Fresh air 226 is compressed in engine system 200, and fresh air is directed to charger-air cooler by contracting machine 224 220.Turbocharger can be any suitable turbocharger type, such as variable geometry turbocharger.In some realities It applies in scheme, turbocharger can be the combination of two or more turbocharger.

At least first part of exhaust is further directed to after-treatment system 218, before being discharged to environment At least partly pollutant in removal exhaust.After-treatment system 218 includes any suitable after-treatment components, including various catalysis Device and filter, such as oxidation catalyzer (for example, DOC), particulate filter (for example, DPF), SCR catalyst, AMOX etc..

Controller 228 is configured to send control signals to each cylinder of the internal combustion engine 201 to control engine 202.The control each cylinder 202 of signal instruction is to run under engine braking modes or in the normal mode.When cylinder exists When running under engine braking modes, cylinder is without any fuel injection or burning.In other words, under engine braking modes Cylinder do not consume fuel or generate torque.When cylinder is run in the normal mode, cylinder with also run in the normal mode Other cylinders coordinate to spray fuel and burn, for meeting the torque demand of internal combustion engine 201.

In some embodiments, control signal is based at least partially on the generation of turbocharger outlet temperature.For example, working as When turbocharger outlet temperature is lower than predetermined temperature threshold, controller 228 generates control signal, at least one cylinder is instructed to exist It is run under engine braking modes and remaining cylinders is run in the normal mode.Predetermined temperature threshold depends on making after-treatment system The 218 desired temperature that can be run with desired transfer efficiency.

In some of the other embodiments, controller 228 is configured to be based at least partially on engine load level to produce Raw control signal.For example, when internal combustion engine 201 has the load level lower than scheduled engine load threshold value, control Device 228 is configured to generate control signal, and instruction internal combustion engine 201 runs at least one cylinder under engine braking modes And run remaining cylinder in the normal mode.Scheduled engine load threshold value depends on desired engine load, should Desired engine load enables internal combustion engine 201 to generate the exhaust with desired temperature, this has desired temperature Exhaust enable after-treatment system 218 with desired transfer efficiency operation.

In some embodiments, controller 228 is configured to based on turbocharger outlet temperature and engine load water Life of showing no increases in output controls signal.The quantity for the cylinder that control signal designation needs to run under engine braking modes.In some implementations In scheme, control signal can indicate the time that the cylinder of the quantity needs to run under engine braking modes during this period Section.Controller 228 is configured to generate control signal in real time based on real-time engine operation condition.

With reference to Fig. 3, flow chart depicts the heat management process according to the internal combustion engine of example embodiment.Heat management mistake Journey enables the engine to generate the exhaust with higher temperature, to improve post-processing transfer efficiency.Engine includes multiple gas Cylinder.Heat management process includes determining turbocharger outlet temperature (302), determines whether turbocharger outlet temperature is lower than whirlpool It takes turns discharge temperature of super charger threshold value (304), in response to determining that turbocharger outlet temperature is lower than turbocharger outlet temperature Threshold value runs at least one cylinder under engine braking modes and remaining cylinders is made to run (306) in the normal mode, In response to determining that turbocharger outlet temperature is not less than turbocharger outlet temperature threshold value, make all cylinders in normal mode Lower operation (308).

At 302, turbocharger outlet temperature is determined, which indicates the turbine of engine The temperature in the exit of machine.One or more temperature sensors can be used to determine in turbocharger outlet temperature.One In a little embodiments, temperature can be measured in the inlet of after-treatment system.

At 304, relatively more identified turbocharger outlet temperature and turbocharger outlet temperature threshold value.Turbine increases Depressor outlet temperature threshold value can be predetermined.Turbocharger outlet temperature threshold value and enable after-treatment system to The temperature of the transfer efficiency operation of prestige is associated.When turbocharger outlet temperature is lower than turbocharger outlet temperature threshold value When, desired efficiency may be not achieved in after-treatment system under turbocharger outlet temperature.When turbocharger outlet temperature When higher than turbocharger outlet temperature threshold value, after-treatment system can achieve desired effect under turbocharger outlet temperature Rate.In some embodiments, turbocharger outlet temperature is higher, and the efficiency that after-treatment system can achieve is higher.

At 306, in response to determining that turbocharger outlet temperature is lower than turbocharger outlet temperature threshold value, engine It runs at least one cylinder in cylinder under engine braking modes and runs remaining cylinders in the normal mode.When When cylinder is run under engine braking modes, cylinder does not have fuel injection and does not burn.When cylinder in the normal mode When operation, cylinder has fuel injection and burns, and coordinates to start to provide with the other cylinders run in the normal mode Torque needed for machine.Engine, which is based at least partially on turbocharger outlet temperature and determines, to be needed under engine braking modes The quantity of the engine of operation.When at least one cylinder is run under engine braking modes, remaining cylinders are with more function Rate density is operated to meet torque demand, so that delivery temperature increases.

At 308, in response to determining that turbocharger outlet temperature is not less than turbocharger outlet temperature threshold value, start Machine runs all cylinders in the normal mode.When turbocharger outlet temperature is not less than turbocharger outlet temperature threshold value When, show that after-treatment system can assign desired efficiency in current exhaust gas temperature.In this case, all cylinders receive Fuel injection is simultaneously burnt.

In some embodiments, heat management process can be periodically run.For example, engine can be supervised periodically Turbocharger outlet temperature is surveyed, and starts heat management since 302.In some embodiments, heat management process can be with It is run under provisional injunction.For example, when predicting engine under the operating condition for providing low turbocharger outlet temperature (for example, working as When engine just starts) operation when, instructing engine heat management process since 302.

With reference to Fig. 4, flow chart depicts the heat management process according to the internal combustion engine of another exemplary embodiment.Heat Management process enables the engine to generate the exhaust with higher temperature, to improve post-processing transfer efficiency.Engine includes Multiple cylinders.Heat management process includes determining engine load (402), determines whether engine load is lower than engine load threshold It is worth (404), in response to determining that engine load is lower than engine load threshold value, makes at least one cylinder in engine braking modes It runs and remaining cylinders is made to run (406) in the normal mode, and in response to determining that engine load is not less than engine Load threshold value makes all cylinders run (408) in the normal mode.

At 402, the currently running engine load of engine is determined.Engine load can be used one or more Engine load sensor determines.

At 404, relatively more identified engine load and engine load threshold value.Engine load threshold value can be pre- First determine.Engine load threshold value is associated with engine load, and engine can produce tool under the engine load There is the exhaust for the temperature for enabling after-treatment system to run with desired transfer efficiency.When engine load is lower than engine load When threshold value, desired efficiency may be not achieved in after-treatment system under engine load.When engine load is airborne higher than starting When lotus threshold value, after-treatment system can achieve desired efficiency under engine load.In some embodiments, start airborne Lotus is higher, and the temperature of produced exhaust is higher, and the efficiency that after-treatment system can achieve is higher.

At 406, in response to determining that engine load is lower than engine load threshold value, engine makes at least one in cylinder A cylinder runs under engine braking modes and runs remaining cylinders in the normal mode.When cylinder is in engine braking When running under mode, cylinder does not have fuel injection and does not burn.When cylinder is run in the normal mode, cylinder has combustion Material, which sprays, simultaneously to burn, and coordinates with other cylinders for running in the normal mode with torque needed for providing engine.Start Machine is based at least partially on identified engine load to determine the engine for needing to run under engine braking modes Quantity.When at least one cylinder in cylinder is run under engine braking modes, remaining cylinder is close with higher power Degree operation is to meet torque demand, so that delivery temperature increases.

At 408, in response to determining that engine load is not less than engine load threshold value, engine makes all cylinders just It is run under norm formula.When engine load is not less than engine load threshold value, after-treatment system can be airborne in current power Generated current exhaust gas temperature assigns desired efficiency under lotus.In this case, all cylinders receive fuel injection simultaneously Burning.

In some embodiments, heat management process can be periodically run.For example, engine can be supervised periodically Survey engine load and from 302 start heat management.In some embodiments, heat management process can be in provisional injunction Lower operation.For example, running when under the operating condition that prediction engine is run under low engine load (for example, the vehicles start Machine is run in city with low speed) when, instructing engine to start heat management process from 402.

Although this specification includes many specific embodiment details, these are not necessarily to be construed as to can be required The limitation of the range of the content of protection, but should more precisely be interpreted to retouch feature specific to specific embodiment It states.Certain features described in the context of individual embodiment can also be in combination in single embodiment party in the present specification Implement in formula.On the contrary, the various features described in the context of single embodiment can also be individually or with any suitable Sub-portfolio implement in multiple embodiments.Although in addition, feature can be described as above with it is certain combination work and It is even initially claimed in this way, but one or more features from combination claimed are in some cases It can be deleted from the combination, and combination claimed can be related to the deformation of sub-portfolio or sub-portfolio.

Although the disclosure is illustrated that the disclosure can be applied to by the example of six cylinder engine: tool there are two or The engine of more cylinders, including with the engine less than or greater than six cylinders；Various engine types, such as I-6, V-6, V-8, etc.；Engine with difference cylinder ignition order；Diesel engine, petrol engine or other types of hair Motivation；And the engine of any size.

It should be understood that although being described in this way using the word all as desired or suitable instruction utilized in the foregoing description Feature may be more desirable, but it may not be required, and the embodiment for lacking these words can be considered For in the scope of the utility model, which is defined by the following claims.When reading the claims, it is intended that when such as The word of " one (a) ", " one (an) ", "at least one" or "at least a portion" are by use, there is no claim It is limited to the intention of only one item, unless particularly stating in the claims in contrast.When language "at least a portion" and/ Or " a part " quilt is in use, this may include a part of and/or entire item, unless specifically stated otherwise in contrast.

It should be noted that in order to be identified or distinguished one with another, or one identified or distinguished with other, Certain paragraphs of the disclosure can refer to the term of relevant to the part of equipment, equipment etc. such as " first ", " second ".These Term is not intended to only only temporarily or according to sequentially come associated entity (for example, first sensor and second sensor), although Under some cases, these entities may include such relationship.These terms do not limit yet can run in system or environment Possible entity (for example, pipeline) quantity.

Term " connection ", " (in line with) as the crow flies " and similar terms mean two portions as used herein Part is directly or indirectly attached to each other.Such connection can be fixed (for example, permanent) or moveable (for example, It is removable or releasable).Pass through two components or both parts and any additional intermediate member landform integral with one another That are attached to as single whole main body, or by both parts or both parts and any additional intermediate member This, such connection may be implemented.

Term " controller " includes all types of devices, equipment and the machine for handling data, for example includes The combination of programmable processor, computer, system on chip (or multiple aforementioned items), a part of programmed process device or aforementioned item. Device may include dedicated logic circuit, such as FPGA or ASIC.Device may also include other than hardware for the calculating in discussion The code of machine program creation performing environment, for example, constitute processor firmware, protocol stack, data base management system, operating system, The combined code of cross-platform runing time environment, virtual machine or one of which or more.Device and performing environment can Realize a variety of different computation model infrastructure, such as distributed computing and grid computing infrastructure.

It is important that, it is noted that the construction and arrangement of the system shown in various exemplary implementation schemes are characteristically only It is merely illustrative rather than restrictive.Fall into the spirit of the embodiment and/or all changes and modification in range It is expected that by protecting.It should be understood that some features may not be necessary, and the embodiment for lacking various features can be envisioned for In scope of the present application, which is defined by the following claims.It should be understood that the feature described in one embodiment can also To merge and/or combine in a manner of being readily understood by one of ordinary skilled in the art with the feature from another embodiment.

Claims (45)

1. a kind of internal combustion engine system, comprising:

Multiple cylinders；

Charger-air cooler；

Inlet manifold is attached to the multiple cylinder, wherein fuel and the fresh air from the charger-air cooler It is mixed in the inlet manifold；

Turbocharger；

Temperature sensor is used to measure the delivery temperature at the position in the downstream of the multiple cylinder；With

Controller is coupled to the multiple cylinder and is configured to determine whether the delivery temperature is lower than delivery temperature threshold value；

Wherein, when the delivery temperature is lower than the delivery temperature threshold value, at least one cylinder in the multiple cylinder exists It is run under engine braking modes, and the remaining cylinders in the multiple cylinder are run in the normal mode.

2. internal combustion engine system according to claim 1, wherein described at the position in the downstream of the multiple cylinder Delivery temperature includes turbocharger outlet temperature, and it includes true for determining whether the delivery temperature is lower than delivery temperature threshold value Whether the fixed turbocharger outlet temperature is lower than turbocharger outlet temperature threshold value.

3. internal combustion engine system according to claim 2, wherein the controller is configured in response to described in determination Turbocharger outlet temperature is not less than the turbocharger outlet temperature threshold value, instructs the multiple cylinder described normal It is run under mode.

4. internal combustion engine system according to claim 2, wherein the controller is configured in response to the turbine Discharge temperature of super charger is lower than the turbocharger outlet temperature threshold value, and determining will start in the multiple cylinder described The quantity of the cylinder run under machine braking mode.

5. internal combustion engine system according to claim 2 further includes for handling the row generated by the multiple cylinder The after-treatment system of gas.

6. internal combustion engine system according to claim 5, wherein the turbocharger outlet temperature threshold value is preparatory It is determining and associated with the temperature for enabling the after-treatment system to run with desired transfer efficiency.

7. internal combustion engine system according to claim 1 to 6, wherein in the multiple cylinder described Cylinder under engine braking modes does not have fuel injection.

8. internal combustion engine system according to claim 7, wherein the cylinder under the engine braking modes It does not burn.

9. internal combustion engine system described in any one of -6 and 8 according to claim 1, wherein in the multiple cylinder Cylinder under the normal mode has fuel injection.

10. internal combustion engine system according to claim 9, wherein in the multiple cylinder in the normal mode Under the cylinder combustion.

11. internal combustion engine system according to claim 1 to 6, wherein the internal combustion engine system packet Include multiple temperature sensors.

12. internal combustion engine system described in any one of -6,8 and 10 according to claim 1, wherein in the multiple cylinder At least one described cylinder run under engine braking modes and the remaining cylinders in the multiple cylinder are in normal mode Operation is additionally in response to determine engine load lower than engine load threshold value under formula.

13. internal combustion engine system described in any one of -6,8 and 10 according to claim 1, wherein the multiple cylinder The delivery temperature at the position in downstream includes at the position of the upstream of the oxidation catalyzer of the internal combustion engine system Delivery temperature.

14. internal combustion engine system described in any one of -6,8 and 10 according to claim 1, wherein the multiple cylinder The delivery temperature at the position in downstream includes the upstream of the selective catalytic reduction catalyst of the internal combustion engine system Or the delivery temperature at internal position.

15. a kind of internal combustion engine system, comprising:

Multiple cylinders；

Charger-air cooler；

Inlet manifold is attached to the multiple cylinder, wherein fuel and the fresh air from the charger-air cooler It is mixed in the inlet manifold；

Turbocharger；

Engine load sensor is used to determine engine load, and wherein engine is run under the engine load；With

Controller is coupled to the multiple cylinder and is configured to determine whether the engine load is lower than engine load threshold Value；

Wherein, when the engine load is lower than the engine load threshold value, at least one of the multiple cylinder gas Cylinder is run under engine braking modes, and the remaining cylinders in the multiple cylinder are run in the normal mode.

16. internal combustion engine system according to claim 15, wherein the controller is further configured to really The fixed engine load is not less than the engine load threshold value, and the multiple cylinder is instructed to transport under the normal mode Row.

17. internal combustion engine system according to claim 15, wherein the controller is further configured to really The fixed engine load is lower than the engine load threshold value, determine in the multiple cylinder will be in the engine braking The quantity of the cylinder run under mode.

18. internal combustion engine system according to claim 15 further includes being generated for handling by the multiple cylinder The after-treatment system of exhaust.

19. internal combustion engine system according to claim 18, wherein the engine load threshold value is predetermined And it generates with the engine is enable with the temperature that the after-treatment system can be made to run with desired transfer efficiency Exhaust engine load it is associated.

20. internal combustion engine system described in any one of 5-19 according to claim 1, wherein in the multiple cylinder Cylinder under the engine braking modes does not have fuel injection.

21. internal combustion engine system according to claim 20, wherein start mechanism described in the multiple cylinder The cylinder under dynamic model formula does not burn.

22. internal combustion engine system described in any one of 5-19 and 21 according to claim 1, wherein in the multiple cylinder The cylinder under the normal mode have fuel injection.

23. internal combustion engine system according to claim 22, wherein in the multiple cylinder in the normal mode Under the cylinder combustion.

24. internal combustion engine system described in any one of 5-19,21 and 23 according to claim 1, wherein the internal-combustion engine Machine system includes multiple engine load sensors.

25. internal combustion engine system described in any one of 5-19,21 and 23 according to claim 1, wherein the multiple cylinder In at least one described cylinder run under engine braking modes and the remaining cylinders in the multiple cylinder are normal Operation is additionally in response to determine turbocharger outlet temperature lower than turbocharger outlet temperature threshold value under mode.

26. a kind of system of the heat management for internal combustion engine, comprising:

Temperature sensor is used to measure the delivery temperature at the position in the downstream of multiple cylinders of the internal combustion engine；With

Controller is coupled to the multiple cylinder and is configured to generate multiple gas of the control signal to control the engine Cylinder, the controller are configured to determine whether the delivery temperature is lower than delivery temperature threshold value；

Wherein, when the delivery temperature is lower than the delivery temperature threshold value, based on the instruction of the controller, the multiple gas At least one cylinder in cylinder is run under engine braking modes, and the remaining cylinders in the multiple cylinder are in normal mode It is run under formula.

27. system according to claim 26, wherein the delivery temperature at the position in the downstream of the multiple cylinder Including turbocharger outlet temperature, and determining whether the delivery temperature is lower than delivery temperature threshold value includes determining the whirlpool Whether wheel discharge temperature of super charger is lower than turbocharger outlet temperature threshold value.

28. system according to claim 27, wherein the controller is further configured to determine the turbine Discharge temperature of super charger is not less than the turbocharger outlet temperature threshold value, instructs the multiple cylinder in the normal mode Lower operation.

29. system according to claim 27, wherein the controller is further configured to determine the turbine Discharge temperature of super charger is lower than the turbocharger outlet temperature threshold value, and determining will start in the multiple cylinder described The quantity of the cylinder run under machine braking mode simultaneously instructs the cylinder of the quantity to run under the engine braking modes.

30. system according to claim 27 further includes for handling the rear of the exhaust generated by the multiple cylinder Reason system.

31. system according to claim 30, wherein the turbocharger outlet temperature threshold value is predetermined simultaneously And it is associated with the temperature for enabling the after-treatment system to run with desired transfer efficiency.

32. the system according to any one of claim 26-31, wherein in the multiple cylinder in the engine Cylinder under braking mode does not have fuel injection.

33. system according to claim 32, wherein in the multiple cylinder under the engine braking modes The cylinder does not burn.

34. the system according to any one of claim 26-31 and 33, wherein in the multiple cylinder it is described at least One cylinder is run under engine braking modes and the remaining cylinders in the multiple cylinder are run also in the normal mode In response to determining that engine load is lower than engine load threshold value.

35. the system according to any one of claim 26-31 and 33, wherein the position in the downstream of the multiple cylinder The delivery temperature at place includes the delivery temperature at the position of the upstream of the oxidation catalyzer of the system.

36. the system according to any one of claim 26-31 and 33, wherein the position in the downstream of the multiple cylinder The delivery temperature at place includes the exhaust at the upstream of the selective catalytic reduction catalyst of the system or the position of inside Temperature.

37. a kind of system of the heat management for internal combustion engine, comprising:

Engine load sensor is used to determine engine load, wherein the internal combustion engine is in the engine load Lower operation；With

Controller is coupled to multiple cylinders of the internal combustion engine and is configured to generate control signal to control described start Multiple cylinders of machine, the controller are configured to determine whether the engine load is lower than engine load threshold value；

Wherein, described more based on the instruction of the controller when the engine load is lower than the engine load threshold value At least one cylinder in a cylinder is run under engine braking modes, and the remaining cylinders in the multiple cylinder are just It is run under norm formula.

38. the system according to claim 37, wherein the controller is further configured to start described in determination Airborne lotus is not less than the engine load threshold value, and the multiple cylinder is instructed to run under the normal mode.

39. the system according to claim 37, wherein the controller is configured to airborne in response to starting described in determination Lotus is lower than the engine load threshold value, determines the gas that will be run under the engine braking modes in the multiple cylinder The quantity of cylinder simultaneously instructs the cylinder of the quantity to run under the engine braking modes.

40. the system according to claim 37 further includes for handling the rear of the exhaust generated by the multiple cylinder Reason system.

41. system according to claim 40, wherein the engine load threshold value be predetermined and with make institute The hair of the exhaust with the temperature for enabling the after-treatment system to run with desired transfer efficiency can be generated by stating engine Motivation load is associated.

42. the system according to any one of claim 37-41, wherein in the multiple cylinder in the engine Cylinder under braking mode does not have fuel injection.

43. system according to claim 42, wherein in the multiple cylinder under the engine braking modes The cylinder does not burn.

44. the system according to any one of claim 37-41 and 43, wherein in the multiple cylinder it is described just Cylinder under norm formula has fuel injection and burns.

45. the system according to any one of claim 37-41 and 43, wherein in the multiple cylinder it is described at least One cylinder is run under engine braking modes and the remaining cylinders in the multiple cylinder are run also in the normal mode In response to determining that turbocharger outlet temperature is lower than turbocharger outlet temperature threshold value.