CN104265479B - Vehicle fuel controller and control method - Google Patents

Vehicle fuel controller and control method Download PDF

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CN104265479B
CN104265479B CN 201410368119 CN201410368119A CN104265479B CN 104265479 B CN104265479 B CN 104265479B CN 201410368119 CN201410368119 CN 201410368119 CN 201410368119 A CN201410368119 A CN 201410368119A CN 104265479 B CN104265479 B CN 104265479B
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CN 201410368119
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CN104265479A (en )
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李飞
李萌
郝锐
李卓然
王骞
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李飞
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Abstract

本发明公开了一种车辆节油控制器及控制方法,通过减少某些缸的喷油量,借以在节油模式下节油,在载荷相对较小,速度相对较小的条件下,剩余动力或者说被浪费的部分较少,从而在满足节油的条件下,仍然有部分剩余动力存在,而不会影响车辆的正常运行。 The present invention discloses a fuel controller and a control method for a vehicle, by reducing the amount of fuel injection in some cylinders, thereby saving in economy mode, the load is relatively small, a relatively small speed conditions, the remaining power or less wasted portions to meet the conditions of fuel economy, there are still some remaining power exists, and will not affect the normal operation of the vehicle.

Description

车辆节油控制器及控制方法 Vehicle fuel controller and control method

技术领域 FIELD

[0001]本发明涉及一种车辆节油控制器及节油控制方法,应用于配备多缸发动机的车辆。 [0001] The present invention relates to a fuel controller and a fuel control method for a vehicle, is applied to a vehicle equipped with multi-cylinder engine.

背景技术 Background technique

[0002]节油的可能性源于车辆的运行方式,如汽车的喷油量是根据其质量、载荷、行驶的速度等众多因素设定的。 [0002] The possibility of fuel from the vehicle operating mode, such as the fuel injection amount is based on many factors automotive quality, load, driving speed is set. 在日常使用中,很少达到最大载荷,如荷载五人的家用轿车大多数时间乘坐三人以下,许多车辆都是一人使用。 In everyday use, rarely reach the maximum load, such as load five family car most of the time to take three of the following, many vehicles are one person. 目前我们使用的轿车设计速度大都在每小时140公里以上,但城市道路的行驶速度一般限制在50公里到70公里之间,高速公路最高行驶速度也只有120公里。 We currently use mostly in car design speed above 140 km per hour, but urban road travel speed is generally limited to between 50 km and 70 km, the highway the maximum speed is only 120 km. 在车辆载荷较少,速度不高的情况下,存有节油的空间。 In the small vehicle load, speed is not high, there is space saving.

[0003]由于面临资源、环境的双重压力,节油技术越来越被重视。 [0003] Faced with the dual pressures of resources, environment, fuel-saving technology more and more attention. 节油较早的方案在于提高发动机的燃油效率,往往通过使用如涡轮增压器,使燃油被充分燃烧,提高发动机的效率,但这并不能解决低载荷、低速条件下的节油问题。 Saving the earlier embodiment in that the fuel efficiency of the engine, often by using a turbocharger, so that the fuel combustion is sufficiently improve the efficiency of the engine, but the fuel does not solve the problem under a low load, low speed conditions.

[0004]如中国专利文献CN203528400U采用在发动机缸内助燃和消除积碳的设备,从而提高燃油效率,但没有涉及发动机运行周期(主轴转动周期)内的喷油控制,换言之,没有进行这方面的节油控制,喷油始终按照燃油控制器设定的模式喷油。 [0004] The Chinese patent document CN203528400U employed combustion engine cylinder and eliminating carbon deposition equipment, thereby improving fuel efficiency, but does not involve injection control in the engine operating cycle (cycle rotation of the spindle), in other words, in this regard no fuel control, fuel injection according to the fuel injection control is always set mode.

[0005]中国专利文献CN103410600A则从另外一个途径进行节油,原理是在气缸顶部新增一个排气活动塞,借由该排气活动塞达到排净废气的目的,从而提高燃油燃烧前的氧气含量,提高发动机效率。 [0005] Chinese Patent Document CN103410600A fuel from another pathway, the principle is to add a vent at the top of the cylinder plug event, Seda activity by means of the exhaust gas to the exhaust gas drained object, thereby improving the fuel combustion before the oxygen content, improve engine efficiency. 该方案也没有从本质上减少燃油的摄入,只是提高发动机效率,并不能降低在低速、低载荷条件下的燃油量。 The program does not essentially reduced from the fuel intake, but improve engine efficiency, and can not decrease the amount of fuel at a low speed, low load conditions.

[0006]近年来车辆的供油系统随着科技的的发展,如已经将机械式化油器完全淘汰掉,取而代之的均为电喷式燃油系统。 [0006] In recent years, vehicle fuel system with the development of science and technology, such as a mechanical carburetor has been completely eliminated, Electronic Fuel Injection systems are replaced.

[0007]如何在电喷系统的车上节油,尝试的人较少。 [0007] How the car's fuel-efficient EFI system, fewer people attempt. 在由燃油电脑控制的电子喷射供油系统中节油,最合理的方法是改变燃油电脑所控制的供油模式,将喷油量设置在合理喷油量区间的下限,但这种方式只适合汽车制造厂生产新车。 In an electronic injection fuel supply system controlled by a computer saving the most reasonable approach is to change the mode of fuel supply controlled by the computer, the fuel injection amount of the fuel injection quantity is provided in the lower limit of a reasonable range, but this approach is only suitable automobile factory production car.

[0008] 于中国专利文献CN203499834U提出了一种汽车V8发动机节油控制器,它采用8缸和4缸两种工作模式,从而在低速或者小载荷条件下采用4缸工作而降低能耗。 [0008] Chinese Patent Document CN203499834U proposes in an automotive fuel V8 engine controller, which uses 8 and four-cylinder two modes, so that energy consumption from the sky using 4-cylinder working at low speed or low load conditions. 然后该方案可调性比较差,两种工作模式下的发动机输出功率相差比较大,难以满足实际工况。 The program then adjustable relatively poor, the engine output power is relatively large difference between two modes of operation, it is difficult to meet the actual operating conditions.

[0009]现有发动机的技术配置为发动机的改造提供了一定的技术基础,这还涉及到对现有的车辆节油改装,使其能够在现有的基础上节约一定数量的燃油。 Configuration [0009] existing engines provide certain technical basis for the transformation of the engine, which also involves modification of an existing vehicle fuel economy, it is possible to save a certain amount of fuel in the conventional basis. 发明人认为,要想在电喷车上节油,只有通过某种方法去控制燃油的喷射量,才是节油的唯一途径。 The inventors believe that, in order to EFI fuel-efficient car, only some way to control the fuel injection quantity, is the only way to fuel-efficient. 但是燃油的喷射量是由燃油控制器(也称燃油电脑)控制的,燃油控制器根据预设的七个以上的传感器,把影响燃油喷射量的因素汇集起来,最终确定喷射量。 But the fuel injection quantity by the fuel controller (also known as fuel computer) control, the fuel controller according to a preset seven or more sensors, the factors that affect the amount of fuel injection to bring together, to finalize the injection quantity. 不过这个喷射量在汽车的实际运行中不是固定的,是驾驶人根据需要操控油门,而燃油电脑则根据这个需要,并综合其他有关传感器传回的信号,把这些因素综合相加判断后,实时决定并随时改变的,事先并不能预知它是多少,要想改变它,只有采集某个缸的燃油喷射信号,记住它的喷油时间,在此基础上重新设置减少后续的几个缸的喷油时间,短时控制这几个缸减量喷油,才有可能解决这个节油的难题。 But this injection quantity is not fixed in the actual operation of a motor vehicle, the driver is manipulating the throttle as needed, while the fuel computer is based on this need, and other relevant sensors integrated signal returned, these factors are added after the judgment, in real time and decided to change at any time, and can not predict in advance how much it is, in order to change it, only collect fuel injection signal of a cylinder, and remember its injection time, re-set on the basis of subsequent reduction of several cylinders fuel injection time, short-term control of these reductions cylinder fuel injection, fuel-efficient will it be possible to solve this problem.

发明内容 SUMMARY

[0010]有鉴于此,本发明的目的提出一种基于喷油控制的车辆节油控制器,以及使用该节油控制器的节油控制方法,以达到节油的目的。 [0010] In view of this, an object of the present invention proposes a vehicle controller based on fuel injection control, fuel economy and fuel control method using the controller, in order to achieve the objective of saving.

[0011]依据本发明的一个方面,一种车辆节油控制器,应用于配备多缸发动机的车辆,包括: [0011] According to one aspect of the present invention, a vehicle fuel controller, is applied to a vehicle equipped with a multi-cylinder engine, comprising:

[0012]采集单元,用于接入依序产生的燃油阀开启的原始控制信号; [0012] The acquisition means for sequentially generating the access opening of the raw fuel valve control signal;

[0013]控制单元,连接所述采集单元,以输入的所述原始控制信号,并读取匹配原始控制信号的原始喷油时间,依据节油模式,生成目标喷油时间,从而在发动机主轴的一个周转周期内一目标喷油时间与原始喷油时间相同,其余目标喷油时间为原始喷油时间的90%〜70%。 [0013] a control unit connected to said acquisition means, said original control signal inputted, and reads an original control signal matches the original fuel injection time, according to the economy mode, to generate the target fuel injection time, so that the engine shaft a turnaround time of the original injection time of injection a same target, the target injection time remaining 90% ~ 70% of the original injection time.

[0014]输出单元,连接所述控制单元,输出所述目标喷油时间,用于输出控制相应的燃油控制阀。 [0014] The output unit connected to said control unit, the output of the target fuel injection time, corresponding to the output control fuel control valve.

[0015]上述车辆节油控制器,所述采集单元包含用于输入信号整理的施密特反相电路。 [0015] The vehicle fuel controller, said acquisition unit comprises a Schmitt inverter circuit for inputting a signal finishing.

[0016]上述车辆节油控制器,所述输出单元也包含用于输出信号整理的施密特反相电路。 [0016] The fuel vehicle controller, the output unit also includes a Schmitt inverter circuit output signal for finishing.

[0017] 上述车辆节油控制器,还包括与所述控制单元连接的人机交互装置,以选控目标喷油时间。 [0017] The above-described vehicle fuel controller, further comprising means interactive with said control unit is connected to gate control target injection time.

[0018]上述车辆节油控制器,所述人机交互装置为数字电路构成的多路互锁开关电路,形成多个工作模式,而将目标喷油时间分级。 [0018] The fuel economy of the vehicle controller, the interactive device is a multi-channel digital circuit interlock switch circuit, a plurality of operating modes, and the target injection timing hierarchy.

[0019]依据本发明的另一个方面,一种车辆节油方法,应用于配备多缸发动机的车辆,其包括以下步骤: [0019] According to another aspect of the present invention, a method for saving vehicle, applied to a vehicle equipped with a multi-cylinder engine, comprising the steps of:

[0020] I)接入依序产生的燃油阀开启的原始控制信号及相应的原始喷油时间; Original control signal [0020] I) an access sequence generated by the fuel valve is open and the injection time corresponding to the original;

[0021] 2)根据原始控制信号及匹配的原始喷油时间,在选定的节油模式下,生成目标喷油时间;其中节油模式下在发动机主轴的一个周转周期内一目标喷油时间与原始喷油时间相同,其余目标喷油时间为原始喷油时间的90%〜70%; [0021] 2) original fuel injection time based on the original and the matching control signal, in the economy mode is selected, generating a target injection time; wherein a target fuel injection time in a rotational cycle of the spindle motor economy mode identical to the original fuel injection time, the rest of the target injection time was 90% ~ 70% of the original fuel injection time;

[0022] 3)输出控制燃油控制阀,在步骤2)输出的目标喷油时间下喷油。 [0022] 3) Output control fuel control valve, fuel injection at the target injection time in step 2) output.

[0023]上述车辆节油方法,还配有模式配置方法,用以形成多个喷油模式,从而有选择的选定目标喷油时间。 [0023] The method of the above-described vehicle fuel, comes mode configuration method for forming a plurality of injection mode, thereby selecting a selected target injection time.

[0024]上述车辆节油方法,喷油模式选择为3个,目标喷油时间所占原始喷油时间的比重依次是90%、80%、70%。 [0024] The method of the above-described vehicle fuel, the fuel injection mode is selected as 3, the target injection time occupied by the original injection time of the specific gravity successively 90%, 80%, 70%.

[0025]上述车辆节油方法,在开启节油模式时,以输入的第一个原始控制信号所对应的目标喷油时间为与原始喷油时间相同的目标喷油时间,并按照原始控制信号的输入序列,依序周期地使当前序列下目标喷油时间与原始喷油时间相同。 [0025] The method of saving the vehicle, when the economy mode is turned on, to a first control signal input of the original corresponding to the target injection time is the same as the original target injection timing fuel injection time, and a control signal in accordance with the original the input sequence, sequentially cyclically so that the current sequence in the target fuel injection time and injection timing same as the original.

[0026]上述车辆节油方法,对接入的原始控制信号经施密特反相处理,以消除噪声干扰,并使前后级相互匹配。 [0026] The method of saving the vehicle, access to the original control signal is processed by the Schmitt inverter to remove noise, and the front and rear stage match each other.

[0027]依据本发明,提出一种新的技术路线,通过减少某些缸的喷油量,借以在节油模式下节油,在载荷相对较小,速度相对较小的条件下,剩余动力或者说被浪费的部分较少,从而在满足节油的条件下,仍然有部分剩余动力存在,而不会影响车辆的正常运行。 Under [0027] According to the present invention, a novel technical route, by reducing the amount of fuel injection in some cylinders, thereby saving in economy mode, the load is relatively small, a relatively small speed conditions, the remaining power or less wasted portions to meet the conditions of fuel economy, there are still some remaining power exists, and will not affect the normal operation of the vehicle.

附图说明 BRIEF DESCRIPTION

[0028]图1为依据本发明的一种四缸车辆节油控制器原理图。 [0028] FIG. 1 is a four cylinder vehicle fuel controller in accordance with one principle of the present invention of FIG.

具体实施方式 detailed description

[0029]有两个以上气缸的发动机称为多缸发动机。 [0029] There are two or more cylinders of the engine is called a multi-cylinder engine. 它是由若干个相同的单缸排列在一个机体上共用一根曲轴输出动力所组成。 It is a common crankshaft output power cylinder composed of the same number are arranged in one body. 如双缸、三缸、四缸、五缸、六缸、八缸、十二缸等都是多缸发动机。 The cylinder, three-cylinder, four-cylinder, five-cylinder, six-cylinder, eight-cylinder, etc. are twelve-cylinder multi-cylinder engine. 现代车用发动机多采用四缸、六缸、八缸发动机。 Modern car engine with four-cylinder, six-cylinder, eight-cylinder engine. 发动机的气缸数越多,曲轴转动越均匀,振动也就越小,动力越大。 The more the number of cylinders of the engine, cranking more uniform, the smaller the vibration will, the greater the power.

[0030]上述所谓的曲轴即为发动机的主轴,每转动一周构成一个周期,所有的气缸会依序完成一个循环。 [0030] The above is the so-called crank shaft of the engine, a cycle per revolution constituting one week, all of the cylinders will be a complete sequence cycle.

[0031]通常条件下,气缸的喷油控制信号是喷油的燃油阀的开启信号,跟轴速有关,可被采样。 The [0031] normal conditions, the cylinder fuel injection control signal is an ON signal of the fuel injection valve, with the relevant shaft speed, can be sampled. 而喷油时间跟油门有关,驾驶员通过油门踏板进行控制,当然,驾驶员无需知道其运行模式,只须根据自己想跑快或者想跑慢的需要踩踏油门踏板即可,同时另一方面也说明了喷油时间驾驶员不知道,但受燃油控制器按照预定的算法控制,输出控制燃油阀的启闭时间,因此在相关控制信号的链路上也可被采集。 Throttle and fuel injection time with the relevant driver is controlled by the throttle pedal, of course, the driver without knowing its mode of operation, just wanted to run according to their own needs fast or slow wanted to run the accelerator pedal can be, but on the other hand illustrates a fuel injection time of the driver does not know, but by opening and closing a fuel controller in accordance with a predetermined control algorithm of time, the output control of the fuel valve, and therefore it may be acquired on the link associated control signals.

[0032]下面以四缸发动机为例进行说明,应当理解,与其他多缸发动机相比,在节油控制器和控制方法上仅在于对缸数的差异,本领域的技术人员据此可进行相关的调整和实现。 [0032] In the following a four cylinder engine is described as an example, it will be appreciated that, compared with other multi-cylinder engine, in which method the fuel controller and the difference only in the number of cylinders, one skilled in the art may be made accordingly adjustment and implementation-dependent.

[0033]如前所述,气缸的喷射量是驾驶人根据需要操控油门随时改变的,事先无法预知它是多少,要想改变它,只有实时采集某个缸的燃油喷射信号,记住它的喷油时间,在此基础上重新设置减少后续的几个缸的喷油时间,才有可能解决这个节油的难题。 [0033] As mentioned above, the injection quantity of the cylinder was the driver change at any time according to need to control the throttle, it can not predict in advance how much, in order to change it, only real-time acquisition of a cylinder fuel injection signal, remember it fuel injection time, on this basis, re-set to reduce the subsequent several cylinder fuel injection time, will it be possible to solve the fuel problem. 而燃油喷射信号和喷油时间如前所述为燃油控制器所输出,因而具有现实的技术基础。 And the fuel injection time and fuel injection signal to the fuel controller output as described above, and thus has the technical basis of reality.

[0034]基于四缸发动机,把原车燃油控制器(燃油电脑)控制四个气缸喷油电磁阀(即燃油阀)的控制信号,按照顺序引入车辆节油控制器,如图1所示,当第一缸的喷油控制信号通过输入电路,改变了本控制器内单片机的选定接入的输入端口的电位之后,单片机触发一个输出端口,按照原车燃油电脑给定的喷油时间,输出相应的电信号控制第一缸喷油阀喷油。 [0034] based on a four cylinder engine, the prime vehicle controller fuel (fuel PC) solenoid controlled four-cylinder injector (i.e., fuel valve) control signal, the controller in the order of the introduction of fuel-efficient vehicles, shown in Figure 1, when the first cylinder fuel injection control signal input circuit, changing the potential of the input port selected in the present access controller MCU, a trigger output port of the microcontroller, in accordance with the original car fuel injection time of a given computer, outputting respective electric signals controlling the first injection cylinder fuel injection valve.

[0035]通常燃油阀的启闭控制采用开关量进行控制,因此其采集相对比较简单,如采用复用器在原有的线路上复用一个信号,也可以直接将原始控制信号的电路接入本发明所指的车辆节油控制器。 [0035] The fuel valve opening and closing control is usually controlled using a switch, so it is relatively simple collection, such as by using a multiplexer multiplexing signals on the original circuit, the circuit may also directly access the original control signal present within the meaning of the invention a vehicle fuel controller.

[0036]对于喷油时间,采用开关量,体现在开关量及翻转该开关量之间的时间差。 [0036] For injection time, the amount of use of the switch, reflected in the time difference between the switch and the reversing switch.

[0037]承接前文第一个气缸的相关内容,此时单片机采集并记忆了该缸的喷油时间,当第二个缸的喷油信号触发单片机的再一个输入口之后,单片机控制第二缸喷油的输出口立即输出,但是结束喷油的时间不再按照燃油电脑给定第二缸的喷油时间,而是单片机根据记忆的第一缸的喷油时间重新设定,如强制第二缸的喷油阀比第一缸减少10%、20%或者30 %的喷油时间提前结束喷油。 [0037] The first packet before receiving a cylinder of the content, then the memory of the microcontroller collected and the cylinder injection time, the trigger signal when the microcontroller then injection cylinder a second input port, a second cylinder SCM output port injection immediately output, but the end of the fuel injection time according to the computer is no longer a given time of the second injection cylinder, but the microcontroller resets the fuel injection time according to the memory of a first cylinder, such as a second compulsory cylinder fuel injection valve than the first cylinder to reduce by 10%, 20% or 30% of the injection time ended prematurely injection.

[0038]控制时间由如单片机进行运算,输出基于如相关输出端口的置位或者复位来实现,统配原有的控制链路即可,改动不大。 [0038] The control time by the microcontroller calculates, as the output is set or reset based on the correlation output ports to achieve, with the original control system can link, changes little.

[0039 ]其中1 %、20 %、30 %均为待实验数据,但根据一款原带有节油模式的车的使用情况计算,节油模式时行驶整体上约可节油15%-18%。 [0039] wherein 1%, 20%, 30% are to be experimental data, but the use of a vehicle is calculated according to the original model with fuel, with about a 15% savings of overall economy mode when -18 %.

[0040]进一步地,当第三缸的喷油信号触发单片机的相应输入口之后,第三缸的输出口也重复按第二缸的工作方式喷油。 [0040] Further, when the third cylinder after the fuel injection signal corresponding to a trigger input port of the microcontroller, the output port of the third cylinder injection mode of operation is also repeated by the second cylinder. 这种工作方式直到发动机工作下一工作循环的第一缸,共四个喷油动作。 This first mode of operation until the next work cycle cylinder engine, a total of four injection operation.

[0041]在下一工作循环的第二缸喷油时,单片机收到喷油信号之后,再次触发相应的输出口输出喷油信号,采集并记忆燃油电脑此次给定该缸的喷油时间,然后重新设定减少一定比例的喷油时间,控制往后的四个喷油动作。 After [0041] In the second working cycle of the next cylinder injector, fuel injection signal received microcontroller, again trigger the output fuel injection signal output port, and collecting the computer memory for a given fuel injection timing of the cylinder, then set a certain percentage of decrease injection time, four fuel injection control subsequent operation. 以此类推,每五个喷油动作一个周期,每个周期的第一个喷油动作按原车燃油电脑给定的喷油时间喷油,单片机采集并记忆新的喷油时间信号,然后重新设定并控制后面四个喷油动作,都在单片机记忆的本周期第一个喷油动作喷油时间的基础上,按照一定的比例减量喷油。 And so on, every five injection operation in one cycle, the first fuel injection action of each cycle of the original car computer fuel injection time given the injection, single-chip memory acquisition and new fuel injection time signal, and then re four fuel injection control operation and set back, in a first injection operation of the fuel injection time based microcontroller memory of the present cycle, according to certain proportion decrement injection.

[0042]根据上面的叙述,在汽车加装本控制器之前喷油阀的工作方式是,随时按照原车燃油电脑实时给定的信号控制喷油的时间,但是加装本控制器之后,每五个喷油动作为一个周期,第一个喷油动作按照原车燃油电脑给定的喷油时间控制喷油,而其后的四个喷油动作在单片机记忆本周期第一个喷油动作喷油时间的基础上按照比例减少喷油时间。 [0042] According to the above description, the present controller is installed in the car before the fuel injection valve is to work, in real time at any given time of the signal control fuel injection in accordance with the original car computer, but after the installation of this controller, each for a period of five injection operation, a first fuel injection operation of the computer in accordance with the original car given injection time control of fuel injection, while the subsequent four fuel injection operation in the microcontroller memory for the present period of operation of the first injection injection time based on the fuel injection time according to the reduction ratio.

[0043]这样作,每一个新的周期都有一个缸按燃油电脑的控制喷油,往后四个缸根据采集并记忆的这一缸的喷油时间按照比例减量喷油,即从整个喷油过程看,加装本控制器后,喷油量趋势仍然是随着燃油电脑的信号来变化的,但是从短时(即一个周期)看,其中四个喷油动作的喷油时间不是随机变化的。 [0043] In so doing, a new cycle of each cylinder has a fuel injection control according to the computer, the next four-cylinder injection in proportion to the reduction of the cylinder and collected in accordance with the injection time of the memory, i.e., from the entire See injection process, after the installation of this controller, the fuel injection quantity of fuel trend remains as the signal changes to the computer, but the short-term (i.e., a cycle) See, four injection operation wherein the injection time is not random variation. 也就是说,加装本节油器后,喷油阀的工作规律仍然是跟踪发动机喷油电脑喷油时间的变化规律,随时在变化的喷油量基础上动态地控制连续四个缸减少一定比例的喷油量。 That is, after the installation of this fuel, a fuel injection valve is still working rule of variation of the engine fuel injection is to track computer injection time, dynamically controlling the fuel injection amount on the basis of change at any time must continuously reduced four cylinders the proportion of the fuel injection quantity. 这样作既能满足减少喷油量的要求,又能最大限度的减少对发动机动力输出的影响。 So as to reduce the fuel injection quantity can meet the requirements, but also to minimize the effect on engine power output.

[0044]在上面所说的工作模式中发动机每一个工作循环与燃油电脑同步工作的那个缸是依次迟后的,这样作有两个目的,一是不固定在一个缸老是足量喷油,而其余三个缸老是欠量喷油,尽量作到平衡动力输出;二是想要达到一定数额的节油量,每缸少喷的油量相对较少,对动力影响较小。 [0044] In the above mentioned mode of operation, the engine cylinder per work cycle, the computer operating in synchronization with the fuel after sequentially delayed, so for two purposes, one is not always secured in a sufficient amount of cylinder injection , while the remaining three-cylinder fuel injection amount owed always try to balance the power output done; the second is trying to achieve a certain amount of fuel savings, relatively few small spray of fuel per cylinder, the power was less affected.

[0045] 再看喷油量的选择,以目标喷油时间为原始喷油时间的90%〜70%为准,如果目标喷油时间选择的太短,容易造成发动机的振动,尤其是在有一个气缸保持原始喷油时间的条件下。 [0045] Look at the fuel injection amount selection, 90% ~ 70% of the original target injection timing of the fuel injection time prevail, if the target injection time chosen is too short, easy to cause vibration of the engine, particularly where there is a holding cylinder injection time of the original conditions. 之所以其余气缸采用相同的目标喷油时间比重,在于尽可能的减少发动机振动。 The reason why the remaining cylinders of the target fuel injection time using the same proportion, as much as possible to reduce engine vibration. 因此,目标喷油时间所占原始喷油时间的比重,不应低于70%。 Thus, the target injection time occupied by the original injection time of the proportion of not less than 70%.

[0046]另一方面,目标喷油时间所占原始喷油时间的比重也不能过大,否则就失去了节油的意义。 [0046] On the other hand, the share of the original target injection time the proportion of injection time can not be too large, otherwise we lose the saving significance. 并且在很多情况下,喷油量并不能被精确控制,往往有如上下约几个百分点的误差。 And in many cases, the fuel injection amount can not be precisely controlled, often like a vertical error of about a few percent.

[0047]在信号的接入和输出上,采用防干扰设计,如图1所示的信号整理施密特反相电路和单片机控制电路输出所接的施密特反相电路。 [0047] and the output signal on the access, the use of tamper-proof design, signal conditioning shown in Figure 1 and a Schmitt inverter circuit MCU control circuit outputs the Schmitt inverter circuit contact.

[0048]施密特反相电路基于施密特触发器,施密特触发器也有两个稳定状态,但与一般触发器不同的是,施密特触发器采用电位触发方式,其状态由输入信号电位维持;对于负向递减和正向递增两种不同变化方向的输入信号,施密特触发器有不同的阈值电压。 [0048] Based on the Schmitt inverter Schmitt trigger circuit, the Schmitt trigger has two stable states, but in general different from the trigger, the Schmitt trigger is triggered by potentiometric mode, by the input status potential of the sustain signal; decrement the input signal and a forward negative incremental changes in two different directions, the Schmitt trigger has a different threshold voltage.

[0049] 门电路有一个阈值电压,当输入电压从低电平上升到阈值电压或从高电平下降到阈值电压时电路的状态将发生变化。 [0049] The gate circuit has a threshold voltage when the input voltage rises from the low level to the threshold voltage or falls from the high level to the threshold voltage of the circuit will change state. 施密特触发器是一种特殊的门电路,与普通的门电路不同,施密特触发器有两个阈值电压,分别称为正向阈值电压和负向阈值电压。 Schmitt trigger gate is a special, different from ordinary gate circuit, there are two Schmitt trigger threshold voltage, called forward threshold voltage and a negative voltage to the threshold. 在输入信号从低电平上升到高电平的过程中使电路状态发生变化的输入电压称为正向阈值电压,在输入信号从高电平下降到低电平的过程中使电路状态发生变化的输入电压称为负向阈值电压。 Circuit state changes during circuit state changes in the input signal rises from the low level to the high level input voltage is referred to process, to forward threshold voltage, dropped from the high level to the low level of the input signal manipulation It referred to as an input voltage to a negative voltage threshold. 正向阈值电压与负向阈值电压之差称为回差电压。 Forward threshold voltage and a negative voltage to the poor called hysteresis threshold voltage.

[0050] 它是一种阈值开关电路,具有突变输入一一输出特性的门电路。 [0050] It is a threshold value switching circuit having an input gate circuit mutation eleven output characteristics. 这种电路被设计成阻止输入电压出现微小变化(低于某一阈值)而引起的输出电压的改变。 This circuit is designed to prevent slight changes in the input voltage (below a certain threshold) occurs due to change of the output voltage.

[0051] 利用施密特触发器状态转换过程中的正反馈作用,可以把边沿变化缓慢的周期性信号变换为边沿很陡的矩形脉冲信号。 [0051] The use of the Schmitt trigger positive feedback state conversion process, it can slow edges periodic signal is converted into a very steep edge of a rectangular pulse signal. 输入的信号只要幅度大于vt+,即可在施密特触发器的输出端得到同等频率的矩形脉冲信号。 As long as the input signal amplitude is greater than vt +, to obtain a rectangular pulse signal equivalent to the frequency at the output of the Schmitt trigger.

[0052] 使用施密特反相器可以有效的消除干扰信号,并产生很陡的矩形脉冲信号,并能使输入级或者输出级与单片机I/O 口很好的匹配。 [0052] The use of Schmitt inverter can effectively eliminate the interference signal, and generates a rectangular pulse signal is very steep, and enables input stage or the output stage with good match the microcontroller I / O port. [〇〇53]本汽车智能节油控制器工作模式可调,如图1所示的下部。 [〇〇53] Intelligent Vehicle fuel controller according to the present mode of operation is adjustable, the lower portion shown in FIG. 模式可调通过控制单片机的四个端口来实现,例如改变端口A的电位,单片机控制四个缸的输入口及对应的输出口,均按照输入多长喷油时间,就输出多长喷油时间的模式工作,即不节油的正常工作方式;恢复端口A的电位,改变端口B的电位,单片机即按上节所述的节油方式工作,当某一缸的输入口控制与之对应的输出口输出,单片机采集并记忆了燃油电脑给定该缸的喷油时间,并在此基础上设定并控制其后的四个缸的喷油时间减少10 % ;恢复端口B的电位,改变端口C的电位,单片机即按上节所述的节油方式喷油时间减少20% ;恢复端口C的电位,改变端口D的电位,单片机即按上节所述的节油方式喷油时间减少30%。 Adjustable control mode is achieved by the four ports of the microcontroller, for example, changing the potential of the port A, MCU control input port and output port corresponding to four cylinders, in accordance with the input injection time long, long injection time is output the mode operation, i.e. no saving in the normal mode; potential recovery port a, port B, the potential change, i.e. the microcontroller operates in a fuel-efficient manner on the section, when the control input port of a cylinder corresponding thereto an output port outputs, the microcontroller collected and computer memory a given fuel injection timing of the cylinder, and thereafter set and controlled four-cylinder injection time is reduced by 10% on the basis of; port B recovery potential, changes potential of port C, microcontroller i.e. the section above the fuel injection time reduction mode of 20%; recovery potential of port C, port D of the potential change, i.e. the section above the microcontroller fuel-efficient manner to reduce injection time 30%. 实际使用时在离驾驶员较近的位置设置一个模式转换开关,就可以让驾驶员随时根据载荷、车速等情况,随意选择“正常行驶不节油”、“节油7.5%”、“节油15%”、“节油22.5%”(在三种节油模式中,目标节油的比例分别是10%、20%、30%,但是发动机的每一个工作循环中有一个缸是等量喷油不节油的,实际上从第一次在第一缸采样到下一次在第一缸采样之前,共有四个工作循环,就是说有四次等量喷油,有十二次减量喷油,统算起来在目标节油分别是10 %、20 %、30 %的情况下,实际节油量分别为7.5%、15%和22.5%。)等四种工作模式,使改装本节油控制器的汽车既能达到理想的节油效果,又能保证足够的动力要求。 The actual pattern is provided from a position close to the driver using the switch, so that the driver can at any time when a load, vehicle speed, etc., are free to choose "not normal fuel-efficient driving", "saving 7.5%", "saving 15% "," saving 22.5% "(the three saving mode, the target fuel ratio is 10%, 20%, 30%, but each work cycle of the engine has a cylinder equal amounts spray fuel oil is not, in fact, from the first time before the first sample cylinder, a total of four duty cycles of the first cylinder to the next sample, an equal amount of fuel injection that is four times, there are twelve ejection reduction oil, fuel system target figure is 10%, 20%, 30%, the actual fuel amount is 7.5%, 22.5% and 15%, respectively.) and other four modes, so modify the fuel the controller of the car can achieve the desired fuel efficiency, but also to ensure sufficient power requirements. [〇〇54]上述方式是一种开关控制方式,或者说是一种状态量控制,也可以采用无级调整的方式,把节油控制在一个区间,在该区间内,利用如电位器输出一个模拟量,接入单片机的模拟量端口,实现无级调整。 [〇〇54] The switch mode is a control mode, or a control state quantity, can be adjusted stepless manner, the fuel control in a range, in this interval, such as using the output of the potentiometer an analog, analog ports, stepless adjustment of the access of the microcontroller.

[0055] 模拟量输入还可以通过如A/D转换器接入单片机的数字量接口。 [0055] The analog input may be via digital interfaces, such as A / D converter access microcontroller.

[0056] 依据可调的节油策略和装置,驾驶员可以根据路况、载荷、速度调整到合适的节油量上。 [0056] According saving policy and adjustable means, the driver can be adjusted to a suitable amount of fuel according to road conditions, load and speed.

[0057] 在一定条件下,单纯依赖速度给出一个参考节油量参考值,给驾驶员一个参考,驾驶员可以据此进行调整。 [0057] Under certain conditions, relying solely on a given reference speed fuel amount reference value, a reference to the driver, the driver may be adjusted accordingly. 速度可以采用速度传感器进行获得,然后按照速度等级与预设的节油量指标相关联,从而根据速度,向如触控屏等呈现调整参考量。 Speed ​​may be obtained using a speed sensor, and according to the speed level associated with a preset amount of fuel index, whereby the velocity, such as a touch screen to render the like to adjust the reference amount.

[0058] 在图1所示的结构中,采用开关电路进行节油模式的选择,结构相对比较简单,驾驶员比较容易控制。 [0058] In the configuration shown in FIG. 1, the switching circuit using the economy mode is selected, the structure is relatively simple, relatively easy to control the driver.

[0059] 经过实际的测试,优选的节油模式选择为3个,目标喷油时间所占原始喷油时间的比重依次是90%、80%、70%,3个有利于驾驶员根据需要进行调整,对驾驶员的要求比较低。 [0059] After the actual test, the economy mode is selected preferably three, target injection time occupied by the original injection time of the specific gravity successively 90%, 80%, 70%, 3 facilitate the driver as needed adjustment, the requirements of the driver is relatively low. 而所说的三个比重,则是实验室测试结果,对整体的节油效果相对较好的三个量。 The three said the proportion of the laboratory test results, the overall fuel efficiency of three relatively good amount.

[0060] 车辆在中速行驶,发动机转速约每分钟2400转时,每秒高达40转,也就是说,每四十分之一秒四个气缸每个缸就喷油一次爆发一次,若仅在这一个四十分之一秒内控制减量喷油,这一次四个缸连续减量喷油的总耗时仅为25毫秒,时间是很短的。 [0060] In the vehicle traveling speed, the engine speed of about 2400 revolutions per minute, up to 40 cycles per second, i.e., every four tenths of a second four cylinders on each cylinder injector outbreak time, if only in which a four-tenth of one second decrement control fuel injection, this time a continuous four-cylinder fuel injection decrement total time of only 25 milliseconds, the time is very short.

Claims (10)

  1. 1.一种车辆节油控制器,应用于配备多缸发动机的车辆,其特征在于,包括: 采集单元,用于接入依序产生的燃油阀开启的原始控制信号; 控制单元,连接所述采集单元,以输入的所述原始控制信号,并读取匹配原始控制信号的原始喷油时间,依据节油模式,生成目标喷油时间,从而在发动机主轴的一个周转周期内一个缸的目标喷油时间与原始喷油时间相同,其余每个缸的目标喷油时间为原始喷油时间的90%〜70%;以及输出单元,连接所述控制单元,输出所述目标喷油时间,用于输出控制相应的燃油控制阀。 A vehicle fuel control, applied to a vehicle equipped with a multi-cylinder engine, characterized by comprising: acquisition means for sequentially generating the control signals with the original fuel valve is open; and a control unit, connected to the acquisition unit, said original control signal inputted, and reads an original control signal matches the original fuel injection time, according to the economy mode, to generate the target fuel injection time, so that in a rotational cycle of a cylinder of the engine shaft ejection target oil original fuel injection time and the same time, the rest of the target injection time of each cylinder is 90% ~ 70% of the original injection time; and an output unit connected to said control unit, the output of the target fuel injection time for output control corresponding fuel control valve.
  2. 2.根据权利要求1所述的车辆节油控制器,其特征在于,所述采集单元包含用于输入信号整理及级间匹配的施密特反相电路。 2. A vehicle according to claim fuel controller of claim 1, wherein the Schmitt inverter circuit unit comprising an input signal inter-stage matching and organize the collection.
  3. 3.根据权利要求2所述的车辆节油控制器,其特征在于,所述输出单元也包含用于输出信号整理及级间匹配的施密特反相电路。 3. The fuel vehicle controller according to claim 2, wherein the output unit also includes a Schmitt inverter circuit between the output signal level matching and organize.
  4. 4.根据权利要求1-3任一所述的车辆节油控制器,其特征在于,还包括与所述控制单元连接的人机交互装置,以选控目标喷油时间。 4. A vehicle according to any one of claims 1-3 according to a fuel controller, characterized by further comprising means interactive with said control unit is connected to gate control target injection time.
  5. 5.根据权利要求4所述的车辆节油控制器,其特征在于,所述人机交互装置为数字量输入的多路开关电路,形成多个工作模式,而将目标喷油时间分级。 5. The fuel controller of the vehicle according to claim 4, wherein said multiplexer circuit means is interactive digital inputs, a plurality of operating modes, and the target injection timing hierarchy.
  6. 6.—种车辆节油方法,应用于配备多缸发动机的车辆,其特征在于,其包括以下步骤: 1)接入依序产生的燃油阀开启的原始控制信号及相应的原始喷油时间; 2)根据原始控制信号及匹配的原始喷油时间,在选定的节油模式下,生成目标喷油时间;其中节油模式下在发动机主轴的一个周转周期内一个缸的目标喷油时间与原始喷油时间相同,其余每个缸的目标喷油时间为原始喷油时间的90%〜70% ; 3)输出控制燃油控制阀,在步骤2)输出的目标喷油时间下喷油。 6.- kinds of vehicle fuel economy methods, applied to a vehicle equipped with a multi-cylinder engine, characterized in that it comprises the following steps: an original control signal 1) are sequentially generated by the access opening of the fuel valve and the fuel injection time corresponding to the original; 2) the original signal and the original injection time matched control, at the economy mode is selected, generating a target injection time; economy mode wherein the rotational cycle of the engine in a cylinder of a spindle and the target injection time the same as the original fuel injection time, the rest of the target injection time of each cylinder is 90% ~ 70% of the original injection time; and 3) an output control fuel control valve, fuel injection at the target injection time in step 2) output.
  7. 7.根据权利要求6所述的车辆节油方法,其特征在于,还配有模式配置方法,用以形成多个喷油模式,从而有选择的选定目标喷油时间。 7. The method of saving vehicle according to claim 6, wherein the configuration mode comes, to form a plurality of injection mode, thereby selecting a selected target injection time.
  8. 8.根据权利要求7所述的车辆节油方法,其特征在于,喷油模式选择为3个,目标喷油时间所占原始喷油时间的比重在3个喷油模式下相应分别是90%、80%、70%。 8. The method of saving vehicle according to claim 7, characterized in that the fuel injection mode is selected as 3, occupied by the original target injection timing at the fuel injection time of the specific gravity injection mode 3 respectively corresponding to 90% , 80%, 70%.
  9. 9.根据权利要求6-8任一所述的车辆节油方法,其特征在于,在开启节油模式时,以输入的第一个原始控制信号所对应的目标喷油时间为与原始喷油时间相同的目标喷油时间,并按照原始控制信号的输入序列,依序周期地使当前序列下目标喷油时间与原始喷油时间相同。 9. A method of saving a vehicle according to any one of claims 6-8, wherein, when the economy mode is turned on, to a first control signal input of the original corresponding to the target injection time of the original injection the same time as the target fuel injection time, and the original sequence according to an input control signal, to sequentially cycle time so that the current sequence in the target injector injection time are the same as the original.
  10. 10.根据权利要求6-8任一所述的车辆节油方法,其特征在于,对接入的原始控制信号经施密特反相处理,以消除噪声干扰及级间匹配。 10. A method of saving a vehicle according to any one of claims 6-8, characterized in that the access to the original control signal by the Schmitt inverters processed to eliminate noise and inter-stage matching.
CN 201410368119 2014-07-29 2014-07-29 Vehicle fuel controller and control method CN104265479B (en)

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EP0838582A1 (en) * 1996-10-28 1998-04-29 Institut Français du Pétrole Method for controlling the intake of a four stroke direct injection engine
JP2007231810A (en) * 2006-02-28 2007-09-13 Toyota Motor Corp Fuel injection control system of internal combustion engine
CN101061300A (en) * 2005-01-13 2007-10-24 丰田自动车株式会社 Start control apparatus for internal combustion engine
EP2067971A2 (en) * 2001-02-05 2009-06-10 Toyota Jidosha Kabushiki Kaisha Control apparatus and method for multi-cylinder internal combustion engine

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US8676476B2 (en) * 2009-12-04 2014-03-18 GM Global Technology Operations LLC Method for real-time, self-learning identification of fuel injectors during engine operation

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EP0838582A1 (en) * 1996-10-28 1998-04-29 Institut Français du Pétrole Method for controlling the intake of a four stroke direct injection engine
EP2067971A2 (en) * 2001-02-05 2009-06-10 Toyota Jidosha Kabushiki Kaisha Control apparatus and method for multi-cylinder internal combustion engine
CN101061300A (en) * 2005-01-13 2007-10-24 丰田自动车株式会社 Start control apparatus for internal combustion engine
JP2007231810A (en) * 2006-02-28 2007-09-13 Toyota Motor Corp Fuel injection control system of internal combustion engine

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