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Engine self-adaptive system based on vehicle operation conditions

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CN103287434A
CN103287434A CN 201210040674 CN201210040674A CN103287434A CN 103287434 A CN103287434 A CN 103287434A CN 201210040674 CN201210040674 CN 201210040674 CN 201210040674 A CN201210040674 A CN 201210040674A CN 103287434 A CN103287434 A CN 103287434A
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vehicle
module
data
engine
operation
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CN 201210040674
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CN103287434B (en )
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陈晓冰
徐一凡
周方明
叶伟宏
李伟
陈国强
黄磊
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厦门金龙联合汽车工业有限公司
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Abstract

The invention discloses an engine self-adaptive system based on vehicle operation conditions, which comprises a GPS (global positioning system) navigation module, a vehicle operating data acquisition module, a whole vehicle parameter and engine working condition data storage module, a map data storage module, a data operation module, a decision-making module and a vehicle control module. The data operation module calculates a current operating state parameter of the vehicle according to vehicle operating data acquired by the vehicle operating data acquisition module and vehicle configuration parameters in the engine working condition data storage module; and then the decision-making module judges the whole vehicle dynamic requirement according to the current operating state parameter of the vehicle and the current section road information, and then acquires the corresponding engine operation parameter in the whole vehicle parameter and engine working condition data storage module, and execution is performed by the vehicle control module. According to the engine self-adaptive system based on the vehicle operation conditions, fuel saving efficacy is achieved through reasonable control of output characteristics of the engine under the premise of guarantee of vehicle dynamic property.

Description

一种车辆运行工况发动机自适应系统 A vehicle engine operating conditions adaptive system

技术领域 FIELD

[0001] 本发明涉及车辆发动机控制领域,更具体的说是涉及一种车辆运行工况发动机自适应系统,其通过对发动机进行控制,从而可以在不降低车辆动力性的前提下,达到降低整车油耗的功效。 [0001] The present invention relates to the field of engine control of the vehicle, more particularly, to a vehicle system, an adaptive engine operating conditions, by controlling an engine, can be reduced without the vehicle's power, to reduce the whole the effectiveness of the car fuel consumption.

背景技术 Background technique

[0002] 根据发动机的动态响应特性,当油门呈现稳态变化时,发动机的扭矩与转速之间的动态关系接近于线性,其曲线是一条滞后于油门变化的曲线;当油门呈现阶跃变化时,发动机输出扭矩瞬间增大,发动机喷油量随油门变化而突然加大,由于发动机转速和增压系统呈稳态上升,故其无法跟上喷油量的变化。 [0002] The dynamic response characteristics of the engine, when the throttle changes in the steady state, the relationship between the dynamic torque and rotational speed of the engine close to linear, which curve is a hysteresis curve of change in the throttle; exhibits a step change when the throttle engine output torque increases instantaneously, with the fuel injection amount of the engine throttle changes abruptly increased, since the form of the steady state engine speed and charge increases, so it can not keep up with changes in the fuel injection amount. 试验数据表明:100%的油门阶跃下,在大约5秒的时间内,气缸内混合气过浓,而存在燃油燃烧不完全、油耗上升以及排放变差等问题。 Experimental data show: 100% throttle step, in about five seconds, the mixture is too thick cylinder, and the presence of incomplete combustion of fuel, increased fuel consumption and deteriorated emission problems.

[0003] 在车辆行驶过程中诸如起步、加速与换挡等工况下,司机为了尽快提速常常会大脚油门,等车辆到达预期速度后再会放松油门,这样的操作在发动机工况变化的时刻,会导致大量燃油没有燃烧完全就随尾气排出,使得车辆油耗升高;而且由于发动机扭矩瞬间增力口,加速过快导致超调,如此经常需要制动减速,即增加了能量浪费;因此经济的驾驶方式中对油门的操作应该轻柔,而不应急加速以及急刹车。 [0003] In the traveling of the vehicle, such as a start, the acceleration of the shift conditions and the like, often as soon as the driver for acceleration Feet accelerator, and the like after the vehicle reaches the target speed will relax the throttle, this operation changes in engine operating conditions timing , does not cause a lot of fuel with combustion exhaust is discharged completely so that the vehicle fuel consumption increases; and because the engine torque instantaneously energizing the mouth, leading to too fast acceleration overshoot, so often required braking deceleration, i.e. increasing the energy waste; therefore economic the operation of the throttle driving style should be soft, but not emergency braking and acceleration.

[0004] 有鉴于此,本发明人针对现有技术中司机不良操作而造成油耗较高的缺陷深入研究,遂有本案产生。 [0004] In view of this, the present invention is directed to poor operation of the prior art result in higher fuel consumption and driver-depth study of defects, then the case has generated.

发明内容 SUMMARY

[0005] 本发明的目的在于提供一种车辆运行工况发动机自适应系统,从而实现在确保车辆动力性的前提下,降低整车油耗的功效。 [0005] The object of the present invention is to provide a vehicle system, an adaptive engine operating conditions, enabling the vehicle under the premise of ensuring power, reduce the efficacy of the vehicle fuel consumption.

[0006] 为了达成上述目的,本发明的解决方案是: [0006] To achieve the above object, the present invention is a solution:

一种车辆运行工况发动机自适应系统,其中,包括: A vehicle engine operating conditions adaptive system, comprising:

GPS导航模块,用于获取车辆的当前位置信息; GPS navigation module, for acquiring current location information of the vehicle;

车辆运行数据采集模块,用于采集车辆的运行数据,车辆运行数据包括车辆当前车速、发动机转速、发动机扭矩、油门踏板开度和制动踏板开度; Vehicle operating data acquisition module, for collecting operational data of the vehicle, vehicle operational data comprises current vehicle speed, engine speed, engine torque, the accelerator pedal opening degree and opening degree of a brake pedal;

整车参数与发动机工况数据存储模块,用于存储车辆配置参数以及对应于不同动力需求的发动机运行参数; Vehicle engine operating conditions and parameters data storage module, for storing configuration parameters of the vehicle and engine operating parameters corresponding to the different power requirements;

地图数据存储模块,用于储存车辆运行区域的地图数据,并根据GPS导航模块所获取的当前位置信息而提取出当前路段道路信息; Map data storage means for storing map data operating area of ​​the vehicle, and to extract information based on the current road link the current position information acquired by GPS navigation module;

数据运算模块,根据车辆运行数据采集模块采集的车辆运行数据计算出车辆当前运行状态参数,该车辆当前运行状态参数包括车辆加速度、油门踏板开度变化率和档位;该数据运算模块还结合整车参数与发动机工况数据存储模块中的车辆配置参数,计算出道路阻力特征系数;再结合从地图数据存储模块获得的当前路段道路信息和数据运算模块计算的车辆当前运行状态参数判断出整车动力需求;决策模块,根据数据运算模块计算出的整车动力需求,查询整车参数与发动机工况数据存储模块中的发动机运行参数,确定对应的发动机运行参数; A data computing module, calculated from the vehicle operating data acquisition module of vehicle operation parameter data of the current running state of the vehicle, the current operating state parameters of the vehicle includes a vehicle acceleration, accelerator pedal opening rate of change of gear; the entire binding data calculation module car engine operating conditions and parameters data storage module configuration parameters of the vehicle, a road resistance characteristic coefficient calculated; recombination current road information and vehicle data link module calculates the operation obtained from the map data storage module determines that the current vehicle operating state parameter power demand; decision module, based on the data of the calculation module calculates the vehicle power demand, vehicle parameters and query engine operating parameters of the engine operating condition data storage module, determining the corresponding engine operating parameters;

车辆控制模块,接收发动机运行参数并控制发动机的输出特性。 Vehicle control module, the control receives engine operating parameters and output characteristics of the engine.

[0007] 进一步,该系统还包括人机交互模块,该人机交互模块用于供司机输入车辆运行信息,该车辆运行信息包括车辆载荷与线路状态;该数据运算模块根据车辆运行信息、当前路段道路信息和车辆当前运行状态参数一起计算出整车动力需求。 [0007] Further, the interactive system further comprises a module, the module is configured for interactive operation information input from a driver of the vehicle, the vehicle information includes a vehicle running load and line status; the data operation module according to the vehicle running information, current road calculation of the current operating status parameter information and road vehicles with a vehicle power demand.

[0008] 进一步,该车辆配置参数包括变速箱档位速比、主减速比、车辆整备质量、轮胎滚动半径、传动系机械效率、车辆转动惯量换算系数、风阻系数和车辆迎风面积。 [0008] Further, the configuration parameter includes a vehicle transmission gear ratio, the main reduction ratio, the vehicle curb weight, the tire rolling radius, the mechanical efficiency of the drive train, vehicle inertia conversion coefficient, drag coefficient, and the vehicle frontal area.

[0009] 进一步,该当前路段道路信息包括坡度、路面状态、道路位置属性和实时路况。 [0009] Further, the current road information including road slope, road conditions, real-time traffic and road position property.

[0010] 采用上述结构后,本发明中数据运算模块根据车辆运行数据采集模块采集的车辆运行数据以及整车参数与发动机工况数据存储模块中的车辆配置参数,计算出车辆当前运行状态参数及道路阻力特征系数;然后再由数据运算模块根据车辆当前运行状态参数及道路阻力特征系数并结合当前路段道路信息判断出整车动力需求,最后由决策模块再根据当前整车的动力需求在整车参数与发动机工况数据存储模块中获取所对应的发动机运行参数,并由车辆控制模块执行。 [0010] With the above structure, the present invention is a data operation module configuration parameters of the vehicle operating data acquisition module of the vehicle data and vehicle operating parameters and operating conditions of the engine in the vehicle data storage modules, parameters to calculate the current running state of the vehicle and road resistance characteristic coefficient; then the data operation module according to the operating condition parameters and the current road resistance characteristic coefficient of the vehicle and the road with the current link is determined that the vehicle power demand information, and then finally by the decision module in accordance with the current power demand of the vehicle in the vehicle engine operating conditions and parameters of the data storage module acquires the corresponding engine operating parameters, vehicle control performed by the module. 如此本发明能在保证车辆动力性的前提下,通过对发动机的输出特性进行合理控制,从而达到节油的功效。 Thus the present invention is capable of ensuring vehicle dynamics premise, by reasonable control of the engine output characteristics, so as to achieve the effect of fuel economy.

附图说明 BRIEF DESCRIPTION

[0011] 图1为本发明涉及一种车辆运行工况发动机自适应系统的结构原理框图。 [0011] FIG. 1 configuration block diagram of a vehicle operating condition relates to an adaptive engine system of the invention.

[0012] 图中: [0012] In the drawings:

发动机自适应系统100 Adaptive engine system 100

GPS导航模块 I 车辆运行数据采集模块2 I GPS navigation module data acquisition module running vehicle 2

整车参数与发动机工况数据存储模块3 地图数据存储模块4 数据运算模块 5 Vehicle engine operating conditions and parameters data storage module 3 maps memory 4 the data operation module 5

决策模块 6 车辆控制模块 7 The decision module 6 vehicle control module 7

人机交互模块 8。 Human-computer interaction module 8.

具体实施方式 detailed description

[0013] 为了进一步解释本发明的技术方案,下面通过具体实施例来对本发明进行详细阐述。 [0013] To further explain the technical solution of the present invention, the following detail to specific embodiments of the present invention through examples.

[0014] 如图1所示,本发明涉及的一种车辆运行工况发动机自适应系统100的结构原理框图,该发动机自适应系统100包括GPS导航模块1、车辆运行数据采集模块2、整车参数与发动机工况数据存储模块3、地图数据存储模块4、数据运算模块5、决策模块6以及车辆控制模块7。 [0014], a functional block diagram of the present invention relates to a structure of a vehicle operating condition of the engine system 100 is adaptive, the adaptive engine 100 includes a GPS navigation module system 1, vehicle operational data acquisition module 2 shown in Figure 1, the vehicle engine operating conditions and parameters data storage module 3, module 4 storing the map data, the data operation module 5, decision module 6 and a vehicle control module 7.

[0015] 该GPS导航模块1,用于获取车辆的当前位置信息;具体的,该GPS导航模块I包括GPS天线和GPS接收器,其是采用公知的方法来获取车辆自身的位置信息,并将该信息在地图数据存储模块4中进行定位。 [0015] The GPS navigation module 1, for obtaining the current position information of the vehicle; Specifically, the GPS navigation module I includes a GPS antenna and a GPS receiver, which is a known method to obtain the position information of the vehicle itself, and the positioning information in the map data storage module 4.

[0016] 该车辆运行数据采集模块2,用于采集车辆的运行数据,该车辆运行数据具体包括车辆当前车速、发动机转速、发动机扭矩、油门踏板开度和制动踏板开度;其可以直接通过车上CAN总线通信而获取,对于未设置CAN总线的车辆,则需要额外配置相应的传感器进行数据采集。 [0016] The vehicle 2 running data acquisition module, for collecting operational data of the vehicle, the vehicle operation data comprises the current vehicle speed, engine speed, engine torque, the accelerator pedal opening degree and the vehicle brake pedal opening degree; which can be directly acquires CAN bus communication board, not provided for a CAN bus of the vehicle, a corresponding sensor is required additional configuration data acquisition.

[0017] 该整车参数与发动机工况数据存储模块3,用于存储车辆配置参数以及对应于不同动力需求的发动机运行参数;具体地,在具体实施例中,该车辆配置参数包括变速箱档位速比、主减速比、车辆整备质量、轮胎滚动半径、传动系机械效率、车辆转动惯量换算系数、风阻系数和车辆迎风面积。 [0017] The parameters of the vehicle and engine operating conditions 3 data storage module, for storing configuration parameters of the vehicle and engine operating parameters corresponding to the different power requirements; in particular, the transmission speed in a particular embodiment, the configuration parameter includes a vehicle bit ratio, the main reduction ratio, the vehicle curb weight, the tire rolling radius, the mechanical efficiency of the drive train, vehicle inertia conversion coefficient, drag coefficient, and the vehicle frontal area. 该发动机运行参数则为对应于当前车辆发动机的参数,其采用预先存储的方式进行设置,该发动机运行参数根据不同的动力需求而有所区别。 The engine operating parameters corresponding to the parameters of the current compared with the vehicle engine, by way of which pre-stored set, the engine operating parameters differ depending on the power requirements.

[0018] 该地图数据存储模块4,用于储存车辆运行区域的地图数据,并根据GPS导航模块I所获取的当前位置信息而提取出当前路段道路信息;具体地,该当前路段道路信息包括坡度、路面状态、道路位置属性和实时路况等信息,该道路位置属性主要用于识别市区道路。 [0018] The map data storage means 4, for running the vehicle map data storage area, and extracts the current position information I acquired GPS navigation module information of the current road segment; Specifically, the road information comprises a current road segment gradient road surface condition, road position and attribute information such as real-time traffic, the road is mainly used to identify the location of property on urban roads.

[0019] 该数据运算模块5,根据车辆运行数据采集模块2采集的车辆运行数据计算出车辆当前运行状态参数,该车辆当前运行状态参数包括车辆等效行驶阻力、车辆加速度、油门踏板开度变化率和档位;该数据运算模块5还结合整车参数与发动机工况数据存储模块3中的车辆配置参数, 计算出道路阻力特征系数;再结合从地图数据存储模块4获得的当前路段道路信息和数据运算模块3计算的车辆当前运行状态参数判断出整车动力需求。 [0019] The data operation module 5 calculates the data acquisition module according to the vehicle running vehicle 2 acquired data of the current operating state of the operating parameters of the vehicle, the current operating state parameters of the vehicle includes a vehicle running resistance equivalent, vehicle acceleration, accelerator pedal opening degree changes and gear ratio; the data computing module 5 further vehicle parameters in conjunction with the engine operating conditions data storage module 3, the configuration parameters of the vehicle, a road resistance characteristic coefficient calculated; recombination current road map data obtained from the road information storage module 4 and a current operating state parameters of the vehicle calculated by the data arithmetic module 3 determines that the vehicle power demand.

[0020] 该决策模块6,根据数据运算模块5计算出的整车动力需求,查询整车参数与发动机工况数据存储模块3中的发动机运行参数,确定对应的发动机运行参数; 该车辆控制模块7,与决策模块6和发动机均相连,其接收决策模块6调取的发动机运行参数并控制发动机的输出特性。 [0020] The decision block 6, the data operation module 5 calculated vehicle power demand, vehicle parameters and query engine operating conditions of engine operating parameters in the data storage block 3, determines the corresponding engine operating parameters; vehicle control module 7, the decision module 6 and the engine are connected to the decision module 6 receives the transfer of engine operating parameters and controls the engine output characteristics.

[0021] 这样,本发明中数据运算模块5根据车辆运行数据采集模块2采集的车辆运行数据以及整车参数与发动机工况数据存储模块3中的车辆配置参数,计算出车辆当前运行状态参数及道路阻力特征系数;然后再由数据运算模块根据车辆当前运行状态参数与当前路段道路信息判断出整车动力需求,最后由决策模块根据当前整车的动力需求在整车参数与发动机工况数据存储模块3中获取所对应的发动机运行参数,并由车辆控制模块7执行。 [0021] Thus, the present invention is a data operation module 5 according to the configuration parameters of the vehicle in the vehicle operation data acquisition module 3 2 collected vehicle data and vehicle operating parameters and data storage module engine operating conditions, is calculated and the vehicle is currently running parameters road resistance characteristic coefficient; then the data operation module determines the current link road information based on the current power requirements of the vehicle operating state parameters of the vehicle, the vehicle finally by the decision module parameter data stored in the engine operating conditions in accordance with the current power demand of the vehicle module 3 acquires the corresponding engine operating parameters, executed by the vehicle control module 7.

[0022] 优选地,该发动机自适应系统100还包括人机交互模块8,该人机交互模块8用于供司机输入车辆运行信息,该车辆运行信息包括车辆载荷与线路状态;该数据运算模块5根据车辆运行信息、当前路段道路信息和车辆当前运行状态参数一起计算出整车动力需求。 [0022] Preferably, the adaptive engine 100 further includes a human-machine interaction system module 8, the module 8 is used for interactive input from a driver of the vehicle running information, the vehicle information includes a vehicle running load and line status; the data computing module 5 based on vehicle operating information, current operating status parameters to calculate the current road information and road vehicles with a vehicle power demand. 另外,通过该人机交互模块8,还可以接受司机的人为操控,允许整个发动机自适应系统;100退出自适应状态或者根据司机选择配置相应的发动机状态。 Further, the human computer interaction module 8, the driver can also accept control, adaptive system allows the entire engine; 100 exits the adaptive state selected by a driver or according to the configuration of the respective engine state.

[0023] 下面详细描述本发明涉及发动机自适应系统100的实现过程: [0023] The present invention relates to the following detailed description of the implementation process of the adaptive system 100 of the engine:

在车辆行驶时,作用域车辆的各种外力在前进方向上可以归为驱动力与行驶阻力。 When the vehicle is running, the scope of various external forces in the forward direction of the vehicle can be classified as the driving force and running resistance. 车辆行驶阻力平衡方程为: Vehicle running resistance Ping Heng equation:

Figure CN103287434AD00051

式中:Ft为驱动力,Ff为滚动阻力,Fw为空气阻力,Fi为坡度阻力,匕为加速阻力。 Where: Ft is the driving force, Ff is the rolling resistance, air resistance Fw, Fi is the gradient resistance, the acceleration resistance of the dagger.

[0024] 该公式等价于: [0024] This equation is equivalent to:

Figure CN103287434AD00052

式中:Ttq为发动机扭矩,ig为变速器传动比,i0为主减速器传动比,r为车轮半径力传动系机械效率,δ为车辆转动惯量换算系数,m为车辆总质量,a为车辆加速度,g为重力加速度,f为滚动阻力系数,Θ为道路坡度角,V为车速,Cd为风阻系数,A为车辆迎风面积。 Where: Ttq engine torque, ig to the transmission gear ratio, i0 main gear ratios, r is the radius of the wheel force of the mechanical efficiency of the drive train, δ vehicle inertia conversion coefficient, m is the total mass of the vehicle, a is the acceleration of the vehicle , g is the acceleration due to gravity, f is the rolling resistance coefficient, Θ a road bank angle, V is the vehicle speed, Cd is the drag coefficient, A is the vehicle frontal area.

[0025] 对于以上数据公式,可以将其转换成: [0025] For the formula above data, it can be converted to:

Figure CN103287434AD00061

λ作为道路阻力特征系数或称为道路等效坡度。 road resistance characteristic coefficient λ as a road or equivalent called gradient.

[0026] 其中,发动机扭矩Ttq和车速V均可以从CAN网络中获取,或通过与相应的电控单元通信取得。 [0026] wherein Ttq engine torque and the vehicle speed V can be obtained from the CAN network, or via a communication unit to obtain the corresponding control electrically. 对于ig、ipiM、δ、Cd和A等参数预先储存在车载终端的整车参数与发动机工况数据存储模块3内,其还将获取的车速进行平滑处理后,由车速的变化率可以计算出加速度a: For parameters ig, ipiM, δ, Cd, and the like A previously stored in the vehicle onboard terminal engine operating conditions and parameters data storage module 3, a vehicle speed which will be obtained after smoothing processing by the rate of change of vehicle speed can be calculated acceleration a:

Figure CN103287434AD00062

τ为车速采样间隔,V1至Vltl是最近10次记录的车速值,V10是最新的车速值。 τ is the sampling interval of the vehicle speed, V1 is the vehicle speed value to Vltl last 10 records, V10 is the latest vehicle speed value.

[0027] 另外,由于在油门变化率大的时候,发动机扭矩会同样产生突变,但车辆由于自身大惯量无法良好地跟随发动机扭矩变化,如此会导致计算出来的λ偏大,因此应该在使用中除去这部分的数据,即仅适用稳态油门或者油门变化率小而均匀的时刻的数据进行计算;因此通过车辆运行数据采集模块2采集的油门踏板开度及制动踏板开度,排除在相应时刻的异常扭矩并对余下的发动机扭矩进行平滑处理;同样地,对于档位,也具有同样的意义,即通过考察当前档位,如果在目前的行驶车速下,当前档位不正常或不合适,则排除此时计算出来阻力特征系数λ的参考价值,其主要也是因为不恰当的档位会导致车辆扭矩参数不正常。 [0027] Further, since a large throttle change rate, the engine torque is also produced mutant, but the vehicle because of their large inertia can not satisfactorily follow engine torque variation, so will result calculated λ is too large, so it should, in use, this part of the removed data, i.e. data only for small and uniform steady throttle or throttle rate of change of timing is calculated; Therefore, by opening the opening degree of the accelerator pedal and the brake pedal of the vehicle operation data collected acquisition module 2, the corresponding negative abnormal torque and engine torque remaining time smoothing; Similarly, for the gear, but also have the same meaning, i.e., by examining the current gear position, if the current traveling speed, the current gear position is abnormal or inappropriate , the reference value calculated at this time to exclude resistance characteristic coefficient λ, which is mainly because of improper torque shift parameter will cause the vehicle is not normal. 对于整车质量m,其除了包括车辆整备质量外,还通过人机交互模块8而可通过司机的输入,而将本次线路上车辆的载荷情况考虑在内。 For the vehicle mass m, which in addition includes a vehicle curb weight, but also man-machine interaction module 8 by a driver input, and the consideration of the load on the vehicle, including the current line.

[0028] 对于整个决策过程,则是先计算得到当前道路的阻力特征系数λ,该阻力特征系数入表征了道路的特征,即包括坡度、路面状态(即道路阻力大小)等信息,接着则通过下述公司而计算出当前路段下车辆的动力需求: [0028] For the decision-making process, it is first calculated current resistance characteristics of the road coefficient [lambda], the resistance characteristic coefficient into characterizing the road characteristics, i.e. comprising a slope, a road surface condition (i.e., road load size) and other information, and then through calculated by the firm power demand of the vehicle under the current road segment:

Figure CN103287434AD00063

.其中:v在默认的情况下取值为道路限速与设计经济时速中较小的一个。 Among them: v value of speed limits and design of economic speed, whichever is smaller in the case of default. 在实时路况信息反映道路拥挤程度的情况下,该值会根据拥挤的程度而改变,实时路况系统会对拥挤程度提出一个定性的描述比如拥挤或畅通,同时定量描述为“目前某某路段平均车速20km/h”,此时V取值为实时路况信息提供的车速,其体现了道路拥挤程度即实时路况。 In the case of real-time traffic information to reflect the extent of road congestion, the value will change according to the degree of congestion, propose a qualitative real-time traffic congestion describe such systems have crowded or smooth, simultaneous quantification described as "certain sections of the current average speed 20km / h ", this time the value of the vehicle speed V provides real-time traffic information, which reflects the extent of road congestion that is real-time traffic.

[0029] «为功率储备系数,是一个与车型相关的定值,其作用是保证了车辆有足够的动力用于加速,该值的选取主要考虑车辆动力性相关规定及驾驶者的驾驶感受,保证车辆加速性能在合理范围内。 [0029] «reserve of power factor, is a constant associated with the model, its role is to ensure that there is enough power for vehicle acceleration, selecting the values ​​for the primary consideration of dynamic vehicle regulations and the driver's driving feelings, to ensure that vehicle acceleration performance within a reasonable range. β为线路修正系数,该参数被人机交互界面的输入信息的线路状态所影响,如快线、限时到达承诺的班线通过增大β的取值保证车辆具有较优越的动力性。 β is the line correction factor, the parameter is influenced by the state of the input information line man-machine interface, such as fast line reaches the limit commitments class lines by increasing the value of β to ensure that vehicles having more excellent dynamic. r则为安全系数,其用于确保车辆有足够的动力应对各种意外情况。 r was the safety factor, which is used to ensure that the vehicle has enough power to deal with unforeseen circumstances. 由于设计时α考虑了安全余量,因此一般情况下F= I ,出于满足动力性及安全考虑,在道路状态不良或坡度较大的区域,功率会被加大,使得Y > I以确保动力充足。 Since the design safety margin considered α, so in general F = I, for meeting the power and safety considerations, in the region of steep or bad, the power state of the road is increased, so that Y> I to make sure adequate power.

[0030] 根据上述计算出的即车辆所需牵引力Ft。 [0030] The desired traction force Ft, i.e., the calculated vehicle. 根据配置参数中车辆各档速比及V车速下的经济档位确定速比^,根据最开始的两个等价方程 ^ The gear ratio is determined economic speed ratios at each vehicle speed V and the configuration parameters of the vehicle, according to equations equivalent to the beginning of the two

Figure CN103287434AD00071

计算该状态下的Ttq发动机最大扭矩需求;再由P=Ft*v计算发动机 Calculates a maximum engine torque demand Ttq in this state; then calculated by the engine P = Ft * v

最大功率需求;该最终选择的发动机动力应该满足最大扭矩需求与最大功率需求中的较大值。 The maximum power demand; engine power of the finally selected should satisfy the greater the maximum torque and the maximum power demand of the demand.

[0031] 最后根据这些需求从整车参数与发动机工况数据存储模块获取所对应的发动机运行参数,并通过车辆控制模块7来执行。 [0031] acquired last engine operating parameters corresponding to the parameters from the vehicle and the engine operating conditions in accordance with these requirements data storage module, and is executed by the vehicle control module 7. 综上可知,本发明能在保证车辆动力性的前提下,通过对发动机的输出特性进行合理控制,从而达到节油的功效。 To sum up, the present invention can, for reasonable control of the output characteristics of the engine in the vehicle to ensure the power of the premise, to achieve the effect of fuel economy.

[0032] 上述实施例和图式并非限定本发明的产品形态和式样,任何所属技术领域的普通技术人员对其所做的适当变化或修饰,皆应视为不脱离本发明的专利范畴。 [0032] The above-described embodiments and drawings are not defined style and product forms of the present invention, any person of ordinary skill in the art or modifications thereof suitable changes made, it should be considered are possible without departing from the scope of the invention.

Claims (4)

1.一种车辆运行工况发动机自适应系统,其特征在于,包括: GPS导航模块,用于获取车辆的当前位置信息; 车辆运行数据采集模块,用于采集车辆的运行数据,车辆运行数据包括车辆当前车速、发动机转速、发动机扭矩、油门踏板开度和制动踏板开度; 整车参数与发动机工况数据存储模块,用于存储车辆配置参数以及对应于不同动力需求的发动机运行参数; 地图数据存储模块,用于储存车辆运行区域的地图数据,并根据GPS导航模块所获取的当前位置信息而提取出当前路段道路信息; 数据运算模块,根据车辆运行数据采集模块采集的车辆运行数据计算出车辆当前运行状态参数,该车辆当前运行状态参数包括车辆加速度、油门踏板开度变化率和档位;该数据运算模块还结合整车参数与发动机工况数据存储模块中的车辆配置参数,计算出道路阻力特征 A vehicle engine operating conditions adaptive system, characterized by comprising: GPS navigation module, for acquiring current location information of the vehicle; vehicle operating data acquisition module, for collecting operational data of the vehicle, vehicle operational data comprises current vehicle speed, engine speed, engine torque, the accelerator pedal opening degree and the vehicle brake pedal opening degree; engine operating conditions and parameters of the vehicle data storage module, for storing configuration parameters, and the vehicle power demand corresponding to different engine operating parameters; map data storage means for storing map data for vehicle operating region, and the extracted information based on the current road link the current position information acquired by GPS navigation module; data operation module, is calculated from the vehicle operating data acquisition module of the vehicle operation data current operating state parameters of the vehicle, the current operating state parameters of the vehicle includes a vehicle acceleration, accelerator pedal opening rate of change of gear; the data computing module further vehicle parameters in conjunction with the engine operating conditions of the vehicle data storage module configuration parameters calculated road resistance characteristic 数;再结合从地图数据存储模块获得的当前路段道路信息和数据运算模块计算的车辆当前运行状态参数判断出整车动力需求; 决策模块,根据数据运算模块计算出的整车动力需求,查询整车参数与发动机工况数据存储模块中的发动机运行参数,确定对应的发动机运行参数; 车辆控制模块,接收发动机运行参数并控制发动机的输出特性。 Number; combined information and the road link the current vehicle data operation module calculates obtained from the map data storage module determines that the current operating state of the vehicle power demand parameter; decision module, based on the data of the calculation module calculates the vehicle power demand, the whole query vehicle parameters of the engine operating parameters of the engine operating condition data storage module, determining the corresponding engine operating parameters; vehicle control module receives the operating parameters and control the engine output characteristics of the engine.
2.如权利要求1所述的一种车辆运行工况发动机自适应系统,其特征在于,该系统还包括人机交互模块,该人机交互模块用于供司机输入车辆运行信息,该车辆运行信息包括车辆载荷与线路状态;该数据运算模块根据车辆运行信息、当前路段道路信息和车辆当前运行状态参数一起计算出整车动力需求。 2. A vehicle as claimed in operating conditions of the engine 1, the adaptive system of the vehicle operation, characterized in that the system further includes a human-machine interaction module, the module is configured for interactive operation information input from a driver of the vehicle, information includes a vehicle load and line status; the data operation module according to the vehicle running information, the current parameter is calculated with the current operating state of the vehicle and the road information, links the vehicle power demand.
3.如权利要求1所述的一种车辆运行工况发动机自适应系统,其特征在于,该车辆配置参数包括变速箱档位速比、主减速比、车辆整备质量、轮胎滚动半径、传动系机械效率、车辆转动惯量换算系数、风阻系数和车辆迎风面积。 3. A vehicle engine operating conditions adaptive system according to claim 1, wherein the configuration parameters comprise vehicle transmission gear ratio, the main reduction ratio, the vehicle curb weight, the rolling radius of the tires, driveline mechanical efficiency, vehicle inertia conversion coefficient, drag coefficient, and the vehicle frontal area.
4.如权利要求1所述的一种车辆运行工况发动机自适应系统,其特征在于,该当前路段道路信息包括坡度、路面状态、道路位置属性和实时路况。 A vehicle engine operating conditions of the adaptive system as claimed in claim 1, wherein the road information includes current road gradient, road surface condition, road position, and real-time traffic attribute.
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