CN103847492A - Hybrid power system, method and automobile based on dual-mode homogenizing compression ignition internal combustion engine - Google Patents
Hybrid power system, method and automobile based on dual-mode homogenizing compression ignition internal combustion engine Download PDFInfo
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Abstract
The invention relates to a hybrid power system based on a dual-mode homogenizing compression ignition internal combustion engine. The hybrid power system comprises a power device, a transmission device, a clutch device, an inverting control device, a power battery unit and a hybrid power control unit. The invention further relates to a hybrid power control method and automobile achieved on the basis of the hybrid power system. The hybrid power system has the advantages of being good in technical expansibility and high in following performance, benefit-cost ratio and practical value and having flexibility in hybrid power flow direction control and can be applied to almost all vehicle models.
Description
Technical field
The present invention relates to a kind of hybrid power system, relate in particular to a kind of combustion engine with double mode homogeneity compression-ignition (HCCI, Homogenous Charge Compression Ignition) and transmit medium and integrated hybrid electric drive system and hybrid power control method and the automobile of motor/generator, electrokinetic cell unit and control technology thereof as major impetus source and using mechanical connection, power circuit as energy.
Background technology
Because traditional combustion engine only could obtain preferably fuel economy at less high load capacity operating point, and in daily life, the power actuated vehicle take combustion engine as main power the most often operates under underload or idling operation and Fraquent start, thereby comprehensive oil consumption is high.Homogeneity compression-ignition formula combustion engine has higher fuel economy and lower discharge than traditional combustion engine under compression-ignition mode, but it is stable, operation area scope is less efficiently, mainly concentrate on middle low speed and load operating mode, therefore maximum torque/the power of output is much smaller.Can expand the power output upper limit although adopt dual combustion mode to switch, between pattern, switch the problems such as transient response is poor, the deficiency of varying duty ability and restricting its and substitute existing traditional Vehicular internal combustion engine and carry out large-scale promotion use.
Existing hybrid power system generally adopts the combustion engine of traditional Spark ignition type Otto circulation or Atkinson circulation, this type of combustion engine is poor at the work efficiency in slow speed of revolution running on the lower load region, in order to guarantee the greater efficiency of hybrid power system, often make the efficient district of internal combustion engine at middle and high load working condition, often there is in the lower city operating mode of power output demand the phenomenon that output power of internal combustion engine is more than needed, need to be equipped with high capacity cell and carry out energy of reserve, and the easily performance to electrokinetic cell and causing damage service life of the charging form of the large electric current of superpower, manufacturing cost and the maintenance cost of hybrid electric vehicle are increased, this becomes affects hybrid vehicle sale, one large key factor of application.
In being 200820165300.5 and 200810121177.1 patent application, application number proposes to adopt the scheme of the hybrid electric vehicle of HCCI combustion engine, these schemes are using HCCI combustion engine as major impetus output source, mechanical connection between combustion engine and wheel, the change of the road conditions of travelling is directly reflected as the variation of internal-combustion engine rotational speed/load, the varying duty response of this combustion motor has quite high requirement, but HCCI combustion engine is not enough to some extent in ability aspect this, even if use combustion engine to carry out Load Regulation, frequently, fast speed working conditions change very easily causes HCCI combustion engine because of catching fire that the control of the burning difficulty zero hour causes, the phenomenon that the operation such as pinking is unstable, work efficiency declines to a great extent, deterioration of emission.In addition, HCCI combustion engine is compared traditional ignition internal combustion engine of same discharge capacity, much smaller with the maximum output torque/power under rotating speed, so in order to meet in vehicle continuous wave high power output demand, as long-time high-speed working condition, the road conditions such as continuous climbing, needs are equipped with the HCCI combustion engine of larger discharge capacity, in battery electric quantity deficiency, motor cannot the situation of power-assisted under, realize independent high-power output, the increase of discharge capacity means the increase of loss due to friction, and the efficiency of internal combustion engine declines; Meanwhile, this arranges also to the car load parts of originally compact hybrid electric vehicle and has proposed a difficult problem.
Summary of the invention
In view of this, hybrid power control method and automobile that main purpose of the present invention is to provide a kind of hybrid power system based on double mode homogeneity compression-ignition combustion engine, uses this hybrid power system to realize, to solve the above-mentioned problems in the prior art and otherwise problem.
In order to realize above-mentioned goal of the invention, the present invention has adopted following technical scheme:
Based on a hybrid power system for double mode homogeneity compression-ignition combustion engine, described hybrid power system comprises:
Engine installation, it comprises double mode homogeneity compression-ignition combustion engine and dynamoelectric machine, for outputting power;
Arrangement of clutch, it is arranged for and connects described double mode homogeneity compression-ignition combustion engine and described dynamoelectric machine, to realize kinetic current by they power that provides to break-make according to the operating mode demand of vehicle, in the time that described arrangement of clutch has a power-transfer clutch, it is arranged on the power take-off shaft end of described dynamoelectric machine; In the time that described arrangement of clutch has multiple power-transfer clutch, they are arranged on respectively the power take-off shaft end of described double mode homogeneity compression-ignition combustion engine and the power take-off shaft end of described dynamoelectric machine;
Driving device, it comprises the input shaft, speed-changing mechanism and the output shaft that connect successively, described output shaft is connected with the power take-off shaft for driving vehicle, the clutch end of described engine installation respectively with described input shaft;
Electrokinetic cell unit, it is connected with described dynamoelectric machine, in described dynamoelectric machine storage of electrical energy during in generator mode, and provides electric energy to it at described dynamoelectric machine during in electric motor mode;
Inversion control device, it is associated and is configured to described dynamoelectric machine and electrokinetic cell unit: during in releasing orientation, make described dynamoelectric machine drive Vehicle Driving Cycle as propulsion source at described arrangement of clutch; At described arrangement of clutch during in closure state, make the load of described dynamoelectric machine as described double mode homogeneity compression-ignition combustion engine, and with generator mode, mechanical energy is converted into electric energy or participates in vehicular drive using electric motor mode as auxiliary power source; And
Hybrid power control unit, it is associated with described engine installation, driving device, arrangement of clutch, inversion control device and electrokinetic cell unit, for judging the corresponding operating condition that should adopt according to the running information of input, and send to described engine installation, driving device, arrangement of clutch, inversion control device and/or electrokinetic cell unit function unit separately to implement output signal.
In above-mentioned hybrid power system, preferably, the fuel of described double mode homogeneity compression-ignition combustion engine is supplied with intake port injection mode or the inner cylinder direct injection mode of adopting.
In above-mentioned hybrid power system, preferably, described double mode homogeneity compression-ignition combustion engine is spontaneous intake type internal combustion engine or the supercharged engine with supercharging equipment, and described supercharging equipment comprises centrifugal supercharging blower, mechanical supercharger, electric drive blwr.
In above-mentioned hybrid power system, preferably, described driving device adopts gear transmission mode, chain type of drive, with type of drive or their combination.
In above-mentioned hybrid power system, preferably, described power-transfer clutch adopts planetary gear type, fluid power manifold type or friction clutch.
A kind of hybrid power control method that uses the realization of the hybrid power system based on double mode homogeneity compression-ignition combustion engine as described in above any one, described hybrid power control method comprises: count SOC value while being not less than urgent charging limit value at vehicle in parking or idling mode and battery charge lotus, close described double mode homogeneity compression-ignition combustion engine and described dynamoelectric machine.
A kind of hybrid power control method that uses the realization of the hybrid power system based on double mode homogeneity compression-ignition combustion engine as described in above any one, described hybrid power control method comprises: at vehicle in the lotus charge number SOC of idling mode and battery value during lower than urgent charging limit value, by described arrangement of clutch closure, described driving device is disconnected at the power take-off shaft place of driving machine motor vehicle and in neutral position, and when described double mode homogeneity compression-ignition combustion engine adopts while lighting by gasoline the compound combustion mode of operation that (SI) combustion pattern and homogeneity compression-ignition (HCCI) combustion pattern combine, light (SI) combustion pattern and move to reach the output of relatively high power with gasoline, described dynamoelectric machine is charged to described electrokinetic cell unit as the load of described double mode homogeneity compression-ignition combustion engine and with generator mode operation, until counting SOC value, battery charge lotus is not less than charging early warning value.
Use the hybrid power control method realizing based on the hybrid power system of double mode homogeneity compression-ignition combustion engine as described in above any one, described hybrid power control method comprises: at vehicle under low speed and underload motoring condition:
A. in the time that battery charge lotus is counted SOC value higher than electric charge higher limit, close described double mode homogeneity compression-ignition combustion engine, and described arrangement of clutch is unclamped, described dynamoelectric machine is moved to drive Vehicle Driving Cycle as propulsion source using electric motor mode;
B. in the time that battery charge lotus is counted SOC value not higher than electric charge higher limit, make described double mode homogeneity compression-ignition combustion engine carry out miniwatt output and participate in vehicular drive directly as main power source using homogeneity compression-ignition (HCCI) combustion pattern, make described arrangement of clutch closure, making described dynamoelectric machine realize quick mode according to road conditions power output demand switches, and move and charge to described electrokinetic cell unit with generator mode in the time driving the plentiful and battery charge lotus of power to count SOC value not higher than charging upper limit value, implementing compensation principle at driving under power drives power-assisted to regulate in real time the load of described double mode homogeneity compression-ignition combustion engine with electric motor mode, so that it is loaded in stabilized conditions,
C. in the time that battery charge lotus is counted SOC value lower than charging early warning value, if described double mode homogeneity compression-ignition combustion engine adopts while lighting by gasoline the compound combustion mode of operation that (SI) combustion pattern and homogeneity compression-ignition (HCCI) combustion pattern combine, make it light (SI) combustion pattern with gasoline and carry out work, to move to realize the output of relatively high power and provide whole propulsive efforts of Vehicle Driving Cycle by it at the efficient operating point of middle high load capacity, and make described arrangement of clutch closure, make described dynamoelectric machine be converted into electric energy and charge to described electrokinetic cell unit with generator mode operation the power of having more than needed.
Use the hybrid power control method realizing based on the hybrid power system of double mode homogeneity compression-ignition combustion engine as described in above any one, described hybrid power control method comprises: at vehicle under middle low speed and middle high load capacity motoring condition:
A. count SOC value when battery charge lotus and be not less than charging when early warning value, described double mode homogeneity compression-ignition combustion engine is moved with homogeneity compression-ignition (HCCI) combustion pattern, make described arrangement of clutch closure, participated in directly the driving of vehicle as main power source by described double mode homogeneity compression-ignition combustion engine, described dynamoelectric machine moves to compensate the differential force between propulsive effort demand and the output of described double mode homogeneity compression-ignition combustion engine with electric motor mode;
B. in the time that battery charge lotus is counted SOC value lower than charging early warning value, if described double mode homogeneity compression-ignition combustion engine adopts while lighting by gasoline the compound combustion mode of operation that (SI) combustion pattern and homogeneity compression-ignition (HCCI) combustion pattern combine, make it light (SI) combustion pattern with gasoline and carry out work, to move to realize the output of relatively high power at the efficient operating point of middle high load capacity, and make described arrangement of clutch closure, make described dynamoelectric machine be converted into electric energy and charge to described electrokinetic cell unit with generator mode operation the power of having more than needed.
Use the hybrid power control method that the hybrid power system based on double mode homogeneity compression-ignition combustion engine is realized as described in above any one, described hybrid power control method comprises: load under motoring condition in high speed or superelevation at vehicle:
A. count SOC value when battery charge lotus and be not less than charging when early warning value, if described double mode homogeneity compression-ignition combustion engine adopts while lighting by gasoline the compound combustion mode of operation that (SI) combustion pattern and homogeneity compression-ignition (HCCI) combustion pattern combine, make it light (SI) combustion pattern with gasoline and carry out work, to move to realize the output of relatively high power at the efficient operating point of middle high load capacity, and make power-transfer clutch closure, making described dynamoelectric machine realize quick mode according to road conditions power output demand switches, and drive power plentiful and when battery charge lotus is counted SOC value not higher than charging upper limit value with generator mode move and charge to described electrokinetic cell unit, in the time driving under power, implementing compensation principle drives power-assisted to regulate in real time the load of described double mode homogeneity compression-ignition combustion engine with electric motor mode, so that it is loaded in stabilized conditions,
B. in the time that battery charge lotus is counted SOC value lower than charging early warning value, if described double mode homogeneity compression-ignition combustion engine adopts while lighting by gasoline the compound combustion mode of operation that (SI) combustion pattern and homogeneity compression-ignition (HCCI) combustion pattern combine, make it light (SI) combustion pattern with gasoline and carry out high-load operation work, to whole propulsive efforts of Vehicle Driving Cycle are provided, and make described arrangement of clutch closure, make described dynamoelectric machine be converted into electric energy and charge to described electrokinetic cell unit with generator mode operation the power of having more than needed.
A kind of hybrid power control method that uses the realization of the hybrid power system based on double mode homogeneity compression-ignition combustion engine as described in above any one, described hybrid power control method comprises: vehicle in slow down or braking mode under, make described double mode homogeneity compression-ignition idling for internal combustion engine operation or close, and described arrangement of clutch is unclamped, make described dynamoelectric machine move to absorb vehicle braking energy with generator mode and charge to described electrokinetic cell unit.
A kind of automobile, is provided with the hybrid power system based on double mode homogeneity compression-ignition combustion engine as described in above any one on described automobile, or uses the hybrid power control method as described in above any one on described automobile.
Beneficial effect of the present invention is: it possess skills favorable expandability, the property continued to use is strong, benefit cost ratio is high, hybrid power flows to and the plurality of advantages such as controls flexibly, practical value is high, and can apply the present invention to nearly all vehicle.The present invention adopts efficient double mode homogeneity compression-ignition combustion engine to replace the main power source of traditional type combustion engine as hybrid power system, and make itself and electrical generator, motor power carry out efficient coupling by driving device, there is thereby realized the hybrid power control that flexible power flows to.Particularly, adopt the present invention at least can realize following these technique effects: (1) relies on suitable hybrid power system control policy, utilize electric generator/electric motor combustion motor switch, workload to control, fluctuation of operating conditions amplitude, the frequency of combustion engine are reduced, all the time can be in the pulsation-free operation of efficient district, for HCCI combustion engine provides application platform; (2) adopt homogeneity compression-ignition HCCI pattern, improved the fuel economy of combustion engine low speed middle-low load, the form of participating in driving directly by combustion engine for low speed section in hybrid power system control policy provides efficiency assurance; (3) adopt traditional combustion engine combustion pattern, expand combustion engine high load capacity high-power output performance, make under running on the lower load using combustion engine as main power source, directly participate in vehicular drive, reduce the loss of form of energy transformation, energy transport, make whole kinetic current become more efficient, met hybrid power system output requirement to continuous wave high power under extreme operating condition; (4) adopt the forms such as motor power-assisted assist the switching of double mode, make the process that pattern is switched respond soon, excessively steady; (5) needing under the dynamic mode of combustion engine participation work, power demand according to road conditions to vehicle, between low power HCCI pattern and high-power traditional mode, switch flexibly, reduce output power of internal combustion engine more than needed or not enough phenomenon in a large number, extend battery charging duration, and reduced the frequency that discharges and recharges of battery; (6) due to the real-time of output power of internal combustion engine, can make hybrid power system reduce for the performance requriements such as electrical motor, electrokinetic cell, contribute to reduce the cost of hybrid electric vehicle; (7) can realize under combustion engine HCCI pattern, electrokinetic cell is carried out to the low power charging of little electric current, can reduce circuit loss, and be conducive to maintain battery, guarantee its performance and increase the service life.
Accompanying drawing explanation
Below with reference to drawings and Examples, technical scheme of the present invention is described in further detail, but it should be known that these accompanying drawings are only for task of explanation designs, therefore not as the restriction of the scope of the invention.
Fig. 1 is the operating condition schematic diagram of double mode homogeneity compression-ignition combustion engine.
Fig. 2 is the composition structural representation of the unified embodiment of the hybrid power system based on double mode homogeneity compression-ignition combustion engine of the present invention.
The specific embodiment
First, it should be noted that, below by illustrating by way of example hybrid power system based on double mode homogeneity compression-ignition combustion engine of the present invention, use concrete structure, control flow, feature and the advantage etc. of the hybrid power control method that this hybrid power system realizes, but all descriptions are only used for describing, and should not be understood as the present invention is formed to any restriction.In addition, in the mentioned each embodiment of this paper, described or implicit any single technical characterictic, or be shown or lie in any single technical characterictic in each accompanying drawing, still can between these technical characterictics (or its equivalent), proceed combination in any or delete, thereby obtain of the present invention more other embodiment that may directly not mention in this article.
In addition, unless beyond specializing, each place occurs all belonging to general tems of the prior art these technical termses such as low speed, middle low speed, high speed, underload, middle high load capacity, high load capacity, superelevation load in this article, the implication that their implication and those skilled in the art understand and grasp is consistent completely, and the implication of these technical termses also completely can be understood and grasp by those skilled in the art.For example, normal load refers to energy steady running under HCCI combustion pattern, and the load that when Pressure Rise Rate or maximum explosive pressure are all in tolerance interval in cylinder, driving engine can reach, for example in the unpressurized situation of driving engine, typically referring to indicated mean effective pressure is 1 ~ 5bar.And higher load refers to exceed the larger load of HCCI combustion pattern normal load, for example engine load is under the condition that is greater than 40%.
In Fig. 1, schematically demonstrate the operating condition of double mode homogeneity compression-ignition combustion engine.As the double mode homogeneity compression-ignition combustion engine of main power, (referring to this case is same applicant, the patent No. is 201010508631.6 application for a patent for invention, by reference it is all incorporated to herein), it has higher compression ratio, can realize in the slow-revving operating mode area division of underload the combustion system of homogeneity compression-ignition (HCCI), it is low that this combustion system has improved traditional combustion engine combustion efficiency in this condition range greatly, less economical problem, under cylinder oxygen enrichment state, (λ >1) discharged nitrous oxides is extremely low simultaneously, in the time that needs combustion engine moves with larger load or higher rotation speed operating mode, bump combustion chamber starts roughly, and combustion noise increases, and burning is difficult to control the zero hour, oxynitride discharge raises, and now combustion engine adopts tradition to light (SI) combustion system.This is that traditional Spark ignition type combustion efficiency is higher because in this condition range, even if adopt the air/fuel ratio of λ=1 also can guarantee the post-processing catalytic reaction of blowdown.As a comparison, the control principle of the hybrid power system based on traditional combustion engine is to make as much as possible the efficient operating point of internal combustion engine operation at middle high-load region, but under most road conditions, the power stage of middle-low load can meet daily Vehicle Driving Cycle, therefore just cause so a large amount of plentiful power, also just force hybrid power system to need the energy-storage travelling wave tube of larger capacity to carry out this part energy of storage in the short time.The electric energy loss of charge and discharge process, the technical bottleneck of high capacity cell and cost pressure, hindered the popularization of Technology of Hybrid Electric Vehicle to a certain extent.The double mode homogeneity compression-ignition combustion engine of use that the present invention proposes substitutes traditional combustion engine, expand combustion engine efficient region, make under running on the lower load combustion engine as main power source, directly participate in vehicular drive, thereby reduce the loss of form of energy transformation, energy transport, made the whole kinetic current to become more efficient; In addition, employing dynamoelectric machine-battery pack system, as an auxiliary power system, makes the requirement of maximum I/O power, maximum storage volume greatly reduce, thereby has effectively controlled the cost of hybrid power system.Below in conjunction with the given example of Fig. 2 to these contents carry out more specifically, detailed explanation.
Referring to Fig. 2, is only the composition situation that illustrates synoptically in a schematic way the unified embodiment of the hybrid power system based on double mode homogeneity compression-ignition combustion engine of the present invention in the figure.In an embodiment, it mainly comprises engine installation, driving device, arrangement of clutch, inversion control device, electrokinetic cell unit and hybrid power control unit.
As shown in Figure 2, above-mentioned engine installation comprises double mode homogeneity compression-ignition combustion engine 1 and dynamoelectric machine 4, is provided and is driven the needed power of vehicle by them.As selection, double mode homogeneity compression-ignition combustion engine 1 can adopt by gasoline and light the compound combustion mode of operation that (SI) combustion pattern and homogeneity compression-ignition (HCCI) combustion pattern combine, and also can adopt the compound combustion mode of operation being combined by diesel oil compression ignite (CI) combustion pattern and homogeneity compression-ignition (HCCI) combustion pattern.In addition, as optional situation, the fuel supply mode of double mode homogeneity compression-ignition combustion engine 1 can be intake port injection mode, can be also inner cylinder direct injection mode.In addition, double mode homogeneity compression-ignition combustion engine 1 can be selected the supercharged engine of spontaneous intake type internal combustion engine or band supercharging equipment (for example, centrifugal supercharging blower, mechanical supercharger or electric drive blwr etc.).
Can select by double mode homogeneity compression-ignition combustion engine 1 or the two provides power jointly by dynamoelectric machine 4 or they according to the operating mode demand of vehicle in the present invention, the power of above-mentioned engine installation output situation can be controlled variation.This is that arrangement of clutch 3 by connecting them is realized kinetic current to break-make control.Above-mentioned arrangement of clutch 3 can have a power-transfer clutch, this power-transfer clutch is arranged on to the power take-off shaft end of dynamoelectric machine 4; Or this arrangement of clutch 3 also can have multiple power-transfer clutchs, these power-transfer clutchs are arranged on respectively to the power take-off shaft end of double mode homogeneity compression-ignition combustion engine 1 and the power take-off shaft end of dynamoelectric machine 4.As an example, above-mentioned power-transfer clutch can be selected planetary gear type, fluid power manifold type or friction clutch, also can select other forms of coupling mechanism in prior art.
Driving device comprises the input shaft, speed-changing mechanism 5 and the output shaft 6 that connect successively, this output shaft 6 be used for driving the power take-off shaft of vehicle to be connected, the input shaft of driving device is connected with the clutch end of engine installation, carries out kinetic current to the power of exporting after break-make control to receive by arrangement of clutch 3.So, driving device is in fact just with the power take-off shaft of the power take-off shaft of double mode homogeneity compression-ignition combustion engine 1, dynamoelectric machine 4 and be used for driving the power take-off shaft of vehicle to keep associated, and forms each other certain transmission speed ratio.Under optional situation, above-mentioned driving device can adopt gear transmission mode, chain type of drive or band type of drive, can certainly adopt the array mode of above-mentioned these mechanical drive modes.
For inversion control device 7, it is associated with dynamoelectric machine 4 and electrokinetic cell unit 8, when releasing orientation (by making above-mentioned one or more power-transfer clutchs all keep releasing orientation to realize), make dynamoelectric machine 4 drive Vehicle Driving Cycle as propulsion source with convenient arrangement of clutch 3; At arrangement of clutch 3 when closure state (by making above-mentioned one or more power-transfer clutchs all be kept closed to realize), make the load of dynamoelectric machine 4 as double mode homogeneity compression-ignition combustion engine 1, and dynamoelectric machine 4 is converted into electric energy or dynamoelectric machine 4 with generator mode by mechanical energy and (now serves as main power by double mode homogeneity compression-ignition combustion engine 1) using electric motor mode as auxiliary power source and participate in vehicular drive.
Hybrid power control unit 9 is the vitals in this hybrid power system based on double mode homogeneity compression-ignition combustion engine, it and above-mentioned engine installation, driving device, arrangement of clutch 3, inversion control device 7 keeps associated with electrokinetic cell unit 8, to judge the corresponding operating condition that should adopt according to inputted running information, and output signal is flowed to above-mentioned engine installation, driving device, arrangement of clutch 3, function unit in inversion control device 7 and/or electrokinetic cell unit 8 is implemented, thereby can under the regulation and control of hybrid power control unit, realize the multiple independent working mode that can mutually switch.For example, hybrid power control unit 9 can flow to corresponding output signal internal-combustion engine electronic control system EMS, battery management system BMS etc., to implement corresponding various control policy and independent working mode.About these control policies and mode of operation, will be elaborated hereinafter.
The hybrid power system based on double mode homogeneity compression-ignition combustion engine that the application of the invention provides, can realize corresponding hybrid power control method.
Hybrid power control method of the present invention comprises following control step: count SOC value while being not less than urgent charging limit value at vehicle in the battery charge lotus of parking or idling mode and electrokinetic cell unit 8, close double mode homogeneity compression-ignition combustion engine 1 and dynamoelectric machine 4.
Hybrid power control method of the present invention comprises following control step: at vehicle in idling mode, and when the battery charge lotus of electrokinetic cell unit 8 is counted SOC value lower than urgent charging limit value, by arrangement of clutch 3 closures (by making all power-transfer clutchs in this arrangement of clutch all be kept closed to realize, lower same), driving device is disconnected at the power take-off shaft place of driving machine motor vehicle and in neutral position, and when double mode homogeneity compression-ignition combustion engine 1 adopts while lighting by gasoline the compound combustion mode of operation that (SI) combustion pattern and homogeneity compression-ignition (HCCI) combustion pattern combine, light (SI) combustion pattern and move to reach the output of relatively high power with gasoline, dynamoelectric machine 4 is charged to electrokinetic cell unit 8 as the load of double mode homogeneity compression-ignition combustion engine 1 and with generator mode operation, until counting SOC value, the battery charge lotus of electrokinetic cell unit 8 is not less than charging early warning value.
Hybrid power control method of the present invention comprises following control step: at vehicle under low speed and underload motoring condition:
A. in the time that the battery charge lotus of electrokinetic cell unit 8 is counted SOC value higher than electric charge higher limit, close double mode homogeneity compression-ignition combustion engine 1, and arrangement of clutch 3 is unclamped (by making all power-transfer clutchs in this arrangement of clutch all keep releasing orientation to realize, lower same), make dynamoelectric machine 4 with electric motor mode operation, thereby this dynamoelectric machine 4 is driven to Vehicle Driving Cycle as propulsion source;
B. in the time that the battery charge lotus of electrokinetic cell unit 8 is counted SOC value not higher than electric charge higher limit, make double mode homogeneity compression-ignition combustion engine 1 carry out miniwatt output and participate in vehicular drive directly as main power source using homogeneity compression-ignition (HCCI) combustion pattern, make arrangement of clutch 3 closures, making dynamoelectric machine 4 realize quick mode according to road conditions power output demand switches, and power is plentiful driving, and in the time that counting SOC value not higher than charging upper limit value, battery charge lotus charges to electrokinetic cell unit 8 with generator mode operation, in the time driving under power, implementing compensation principle drives power-assisted to regulate in real time the load of double mode homogeneity compression-ignition combustion engine 1 with electric motor mode, so that it is loaded in stabilized conditions,
C. in the time that the battery charge lotus of electrokinetic cell unit 8 is counted SOC value lower than charging early warning value, if double mode homogeneity compression-ignition combustion engine 1 adopts while lighting by gasoline the compound combustion mode of operation that (SI) combustion pattern and homogeneity compression-ignition (HCCI) combustion pattern combine, make this double mode homogeneity compression-ignition combustion engine 1 light (SI) combustion pattern with gasoline and carry out work, to move to realize the output of relatively high power and provide whole propulsive efforts of Vehicle Driving Cycle by it at the efficient operating point of middle high load capacity, and make arrangement of clutch 3 closures, make dynamoelectric machine 4 be converted into electric energy and charge to electrokinetic cell unit 8 with generator mode operation the power of having more than needed.
Hybrid power control method of the present invention comprises following control step: at vehicle under middle low speed and middle high load capacity motoring condition:
A. count SOC value when the battery charge lotus of electrokinetic cell unit 8 and be not less than charging when early warning value, double mode homogeneity compression-ignition combustion engine 1 is moved with homogeneity compression-ignition (HCCI) combustion pattern, make arrangement of clutch 3 closures, participated in directly the driving of vehicle as main power source by double mode homogeneity compression-ignition combustion engine 1, dynamoelectric machine 4 moves to compensate the differential force between propulsive effort demand and the output of double mode homogeneity compression-ignition combustion engine 1 with electric motor mode;
B. in the time that the battery charge lotus of electrokinetic cell unit 8 is counted SOC value lower than charging early warning value, if double mode homogeneity compression-ignition combustion engine 1 adopts while lighting by gasoline the compound combustion mode of operation that (SI) combustion pattern and homogeneity compression-ignition (HCCI) combustion pattern combine, make this double mode homogeneity compression-ignition combustion engine 1 light (SI) combustion pattern with gasoline and carry out work, to move to realize the output of relatively high power at the efficient operating point of middle high load capacity, and make arrangement of clutch 3 closures, make dynamoelectric machine 4 be converted into electric energy and charge to electrokinetic cell unit 8 with generator mode operation the power of having more than needed.
Hybrid power control method of the present invention comprises following control step: load under motoring condition in high speed or superelevation at vehicle:
A. count SOC value when the battery charge lotus of electrokinetic cell unit 8 and be not less than charging when early warning value, if double mode homogeneity compression-ignition combustion engine 1 adopts while lighting by gasoline the compound combustion mode of operation that (SI) combustion pattern and homogeneity compression-ignition (HCCI) combustion pattern combine, make it light (SI) combustion pattern with gasoline and carry out work, to move to realize the output of relatively high power at the efficient operating point of middle high load capacity, and make power-transfer clutch closure, making dynamoelectric machine 4 realize quick mode according to road conditions power output demand switches, and drive power plentiful and when battery charge lotus is counted SOC value not higher than charging upper limit value with generator mode move and charge to electrokinetic cell unit 8, in the time driving under power, implementing compensation principle drives power-assisted to regulate in real time the load of double mode homogeneity compression-ignition combustion engine 1 with electric motor mode, so that it is loaded in stabilized conditions,
B. in the time that the battery charge lotus of electrokinetic cell unit 8 is counted SOC value lower than charging early warning value, if double mode homogeneity compression-ignition combustion engine 1 adopts while lighting by gasoline the compound combustion mode of operation that (SI) combustion pattern and homogeneity compression-ignition (HCCI) combustion pattern combine, make this double mode homogeneity compression-ignition combustion engine 1 light (SI) combustion pattern with gasoline and carry out high-load operation work, to whole propulsive efforts of Vehicle Driving Cycle are provided, and make arrangement of clutch 3 closures, make dynamoelectric machine 4 be converted into electric energy and charge to electrokinetic cell unit 8 with generator mode operation the power of having more than needed.
Hybrid power control method of the present invention comprises following control step: vehicle in slow down or braking mode under, make double mode homogeneity compression-ignition combustion engine 1 idle or close, and arrangement of clutch 3 is unclamped, make dynamoelectric machine 4 move to absorb vehicle braking energy with generator mode and charge to electrokinetic cell unit 8.
According to above disclosure of the present invention, this can be attached on automobile by hybrid power system based on double mode homogeneity compression-ignition combustion engine, or on automobile, apply individually or in combination above-mentioned hybrid power control method of the present invention, thereby can give full play of technical advantage of the present invention.Like this, in the time making double mode homogeneity compression-ignition combustion engine used in this invention carry out work, it can realize little torque miniwatt HCCI combustion pattern and the switching of the high-power traditional combustion pattern of torque greatly according to the power output demand of vehicle, and handoff procedure becomes more flexibly fast because of the booster action of the interior dynamoelectric machine of hybrid power system, the labile factors such as handoff procedure torque fluctuation are also eliminated simultaneously.In the present invention, by the torque load regulating action of dynamoelectric machine, can make the operating condition (particularly HCCI combustion pattern) of combustion engine more stable, thereby the hidden danger of having eliminated the combustion instability that varying duty brings, makes the combustion engine greatly to improve at the fuel economy of running on the lower load.In addition, because combustion engine is in the raising of the steady and economy of low-load region HCCI combustion pattern, so also just for providing more, more efficient control policy, hybrid power system of the present invention selects as previously mentioned.
More than enumerate some specific embodiments and illustrated in detail hybrid power system, hybrid power control method and the automobile based on double mode homogeneity compression-ignition combustion engine of the present invention, these a few examples are only for explanation principle of the present invention and embodiment thereof, but not limitation of the present invention, without departing from the spirit and scope of the present invention, those of ordinary skill in the art can also make various distortion and improvement.Therefore, all technical schemes that are equal to all should belong to category of the present invention also by every claim of the present invention is limited.
Claims (13)
1. the hybrid power system based on double mode homogeneity compression-ignition combustion engine, is characterized in that, described hybrid power system comprises:
Engine installation, it comprises double mode homogeneity compression-ignition combustion engine and dynamoelectric machine, for outputting power;
Arrangement of clutch, it is arranged for and connects described double mode homogeneity compression-ignition combustion engine and described dynamoelectric machine, to realize kinetic current by they power that provides to break-make according to the operating mode demand of vehicle, in the time that described arrangement of clutch has a power-transfer clutch, it is arranged on the power take-off shaft end of described dynamoelectric machine; In the time that described arrangement of clutch has multiple power-transfer clutch, they are arranged on respectively the power take-off shaft end of described double mode homogeneity compression-ignition combustion engine and the power take-off shaft end of described dynamoelectric machine;
Driving device, it comprises the input shaft, speed-changing mechanism and the output shaft that connect successively, described output shaft is connected with the power take-off shaft for driving vehicle, the clutch end of described engine installation respectively with described input shaft;
Electrokinetic cell unit, it is connected with described dynamoelectric machine, in described dynamoelectric machine storage of electrical energy during in generator mode, and provides electric energy to it at described dynamoelectric machine during in electric motor mode;
Inversion control device, it is associated and is configured to described dynamoelectric machine and electrokinetic cell unit: during in releasing orientation, make described dynamoelectric machine drive Vehicle Driving Cycle as propulsion source at described arrangement of clutch; At described arrangement of clutch during in closure state, make the load of described dynamoelectric machine as described double mode homogeneity compression-ignition combustion engine, and with generator mode, mechanical energy is converted into electric energy or participates in vehicular drive using electric motor mode as auxiliary power source; And
Hybrid power control unit, it is associated with described engine installation, driving device, arrangement of clutch, inversion control device and electrokinetic cell unit, for judging the corresponding operating condition that should adopt according to the running information of input, and send to described engine installation, driving device, arrangement of clutch, inversion control device and/or electrokinetic cell unit function unit separately to implement output signal.
2. hybrid power system according to claim 1, it is characterized in that, described double mode homogeneity compression-ignition combustion engine adopts by gasoline and lights the compound combustion mode of operation that (SI) combustion pattern and homogeneity compression-ignition (HCCI) combustion pattern combine or adopt the compound combustion mode of operation being combined by diesel oil compression ignite (CI) combustion pattern and homogeneity compression-ignition (HCCI) combustion pattern.
3. hybrid power system according to claim 1, is characterized in that, the fuel of described double mode homogeneity compression-ignition combustion engine is supplied with intake port injection mode or the inner cylinder direct injection mode of adopting.
4. hybrid power system according to claim 1, it is characterized in that, described double mode homogeneity compression-ignition combustion engine is spontaneous intake type internal combustion engine or the supercharged engine with supercharging equipment, and described supercharging equipment comprises centrifugal supercharging blower, mechanical supercharger, electric drive blwr.
5. according to the hybrid power system described in any one in claim 1-4, it is characterized in that, described driving device adopts gear transmission mode, chain type of drive, with type of drive or their combination.
6. according to the hybrid power system described in any one in claim 1-4, it is characterized in that, described power-transfer clutch adopts planetary gear type, fluid power manifold type or friction clutch.
7. the use hybrid power control method that the hybrid power system based on double mode homogeneity compression-ignition combustion engine is realized as described in any one in claim 1-6, it is characterized in that, described hybrid power control method comprises: count SOC value while being not less than urgent charging limit value at vehicle in parking or idling mode and battery charge lotus, close described double mode homogeneity compression-ignition combustion engine and described dynamoelectric machine.
8. the use hybrid power control method that the hybrid power system based on double mode homogeneity compression-ignition combustion engine is realized as described in any one in claim 1-6, it is characterized in that, described hybrid power control method comprises: at vehicle in the lotus charge number SOC of idling mode and battery value during lower than urgent charging limit value, by described arrangement of clutch closure, described driving device is disconnected at the power take-off shaft place of driving machine motor vehicle and in neutral position, and when described double mode homogeneity compression-ignition combustion engine adopts while lighting by gasoline the compound combustion mode of operation that (SI) combustion pattern and homogeneity compression-ignition (HCCI) combustion pattern combine, light (SI) combustion pattern and move to reach the output of relatively high power with gasoline, described dynamoelectric machine is charged to described electrokinetic cell unit as the load of described double mode homogeneity compression-ignition combustion engine and with generator mode operation, until counting SOC value, battery charge lotus is not less than charging early warning value.
9. the use hybrid power control method that the hybrid power system based on double mode homogeneity compression-ignition combustion engine is realized as described in any one in claim 1-6, it is characterized in that, described hybrid power control method comprises: at vehicle under low speed and underload motoring condition:
A. in the time that battery charge lotus is counted SOC value higher than electric charge higher limit, close described double mode homogeneity compression-ignition combustion engine, and described arrangement of clutch is unclamped, described dynamoelectric machine is moved to drive Vehicle Driving Cycle as propulsion source using electric motor mode;
B. in the time that battery charge lotus is counted SOC value not higher than electric charge higher limit, make described double mode homogeneity compression-ignition combustion engine carry out miniwatt output and participate in vehicular drive directly as main power source using homogeneity compression-ignition (HCCI) combustion pattern, make described arrangement of clutch closure, making described dynamoelectric machine realize quick mode according to road conditions power output demand switches, and move and charge to described electrokinetic cell unit with generator mode in the time driving the plentiful and battery charge lotus of power to count SOC value not higher than charging upper limit value, in the time driving under power, implementing compensation principle drives power-assisted to regulate in real time the load of described double mode homogeneity compression-ignition combustion engine with electric motor mode, so that it is loaded in stabilized conditions,
C. in the time that battery charge lotus is counted SOC value lower than charging early warning value, if described double mode homogeneity compression-ignition combustion engine adopts while lighting by gasoline the compound combustion mode of operation that (SI) combustion pattern and homogeneity compression-ignition (HCCI) combustion pattern combine, make it light (SI) combustion pattern with gasoline and carry out work, to move to realize the output of relatively high power and provide whole propulsive efforts of Vehicle Driving Cycle by it at the efficient operating point of middle high load capacity, and make described arrangement of clutch closure, make described dynamoelectric machine be converted into electric energy and charge to described electrokinetic cell unit with generator mode operation the power of having more than needed.
10. the use hybrid power control method that the hybrid power system based on double mode homogeneity compression-ignition combustion engine is realized as described in any one in claim 1-6, it is characterized in that, described hybrid power control method comprises: at vehicle under middle low speed and middle high load capacity motoring condition:
A. count SOC value when battery charge lotus and be not less than charging when early warning value, described double mode homogeneity compression-ignition combustion engine is moved with homogeneity compression-ignition (HCCI) combustion pattern, make described arrangement of clutch closure, participated in directly the driving of vehicle as main power source by described double mode homogeneity compression-ignition combustion engine, described dynamoelectric machine moves to compensate the differential force between propulsive effort demand and the output of described double mode homogeneity compression-ignition combustion engine with electric motor mode;
B. in the time that battery charge lotus is counted SOC value lower than charging early warning value, if described double mode homogeneity compression-ignition combustion engine adopts while lighting by gasoline the compound combustion mode of operation that (SI) combustion pattern and homogeneity compression-ignition (HCCI) combustion pattern combine, make it light (SI) combustion pattern with gasoline and carry out work, to move to realize the output of relatively high power at the efficient operating point of middle high load capacity, and make described arrangement of clutch closure, make described dynamoelectric machine be converted into electric energy and charge to described electrokinetic cell unit with generator mode operation the power of having more than needed.
11. 1 kinds of use hybrid power control methods that the hybrid power system based on double mode homogeneity compression-ignition combustion engine is realized as described in any one in claim 1-6, it is characterized in that, described hybrid power control method comprises: load under motoring condition in high speed or superelevation at vehicle:
A. count SOC value when battery charge lotus and be not less than charging when early warning value, if described double mode homogeneity compression-ignition combustion engine adopts while lighting by gasoline the compound combustion mode of operation that (SI) combustion pattern and homogeneity compression-ignition (HCCI) combustion pattern combine, make it light (SI) combustion pattern with gasoline and carry out work, to move to realize the output of relatively high power at the efficient operating point of middle high load capacity, and make power-transfer clutch closure, making described dynamoelectric machine realize quick mode according to road conditions power output demand switches, and move and charge to described electrokinetic cell unit with generator mode in the time driving the plentiful and battery charge lotus of power to count SOC value not higher than charging upper limit value, in the time driving under power, implementing compensation principle drives power-assisted to regulate in real time the load of described double mode homogeneity compression-ignition combustion engine with electric motor mode, so that it is loaded in stabilized conditions,
B. in the time that battery charge lotus is counted SOC value lower than charging early warning value, if described double mode homogeneity compression-ignition combustion engine adopts while lighting by gasoline the compound combustion mode of operation that (SI) combustion pattern and homogeneity compression-ignition (HCCI) combustion pattern combine, make it light (SI) combustion pattern with gasoline and carry out high-load operation work, to whole propulsive efforts of Vehicle Driving Cycle are provided, and make described arrangement of clutch closure, make described dynamoelectric machine be converted into electric energy and charge to described electrokinetic cell unit with generator mode operation the power of having more than needed.
12. 1 kinds of use hybrid power control methods that the hybrid power system based on double mode homogeneity compression-ignition combustion engine is realized as described in any one in claim 1-6, it is characterized in that, described hybrid power control method comprises: vehicle in slow down or braking mode under, make described double mode homogeneity compression-ignition idling for internal combustion engine operation or close, and described arrangement of clutch is unclamped, make described dynamoelectric machine move to absorb vehicle braking energy with generator mode and charge to described electrokinetic cell unit.
13. 1 kinds of automobiles, it is characterized in that, on described automobile, be provided with the hybrid power system based on double mode homogeneity compression-ignition combustion engine as described in any one in claim 1-6, or use the hybrid power control method as described in any one in claim 7-12 on described automobile.
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