WO2016106992A1 - 采用乙醇燃料的发动机的燃烧参数调试方法及装置 - Google Patents
采用乙醇燃料的发动机的燃烧参数调试方法及装置 Download PDFInfo
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- the invention relates to the technical field of engine structural design, in particular to a method for debugging combustion parameters of an engine using ethanol fuel.
- the invention also relates to a combustion parameter commissioning device for an engine using ethanol fuel.
- Ethanol fuel as a substitute fuel for internal combustion engine has the following advantages: 1. High octane number, non-toxic ethanol, no harm to the environment, and methyl tert-butyl ether is contaminated by groundwater, carcinogenic, etc., so ethanol can replace use of lead-free antiknock additives MTBE; 2. ethanol is oxygenated fuel, high latent heat of evaporation, the engine can achieve smokeless burning ethanol emissions and CO emissions can be greatly reduced, while also HC and NO X There can be different degrees of reduction.
- Ethanol fuel has a wide range of sources, and its regenerative capacity is strong. Agricultural countries such as Brazil are rich in sugar cane. Excess sugar cane can be squeezed into juice, fermented and dehydrated, and prepared into alcohol to solve energy problems. In the existing market, there are only E22 and E100 fuels, but the mixed use of these two fuels is not prohibited. That is to say, the common phenomenon in the market is that vehicles can add different proportions of E22 and E100.
- the ethanol fuel, the ethanol content of the engine fuel of each car is flexible.
- the engine's electronic control system needs to adjust the combustion parameters according to the nature of the fuel to meet the engine's operating requirements.
- there is only an engine commissioning method based on 93# gasoline fuel and there is no method for commissioning combustion parameters for ethanol fuel, resulting in poor combustion performance of an engine using ethanol fuel.
- the present invention provides the following technical solutions:
- a method for debugging combustion parameters of an engine using ethanol fuel comprising the following steps:
- a predicted combustion parameter value a base parameter + an offset * a correction factor, wherein: the base parameter is the first combustion parameter value of the E22 fuel, the offset being the first of the E100 fuel a difference between a combustion parameter value and the first combustion parameter value of the E22 fuel, the correction coefficient being a known coefficient obtained from an ethanol content;
- step S15 determining whether the first difference is within a reasonable range, and if so, proceeding to step S16, otherwise proceeding to step S17;
- the “correcting the interpolation method formula” in the step S17 specifically includes the following steps:
- step S11 the following steps are further included between the step S11 and the step S12:
- S21 processing the first combustion parameter value, and filling the first combustion parameter value into a parameter spectrum of the debugging device, and acquiring repeated combustion parameters of the E22 fuel and the E100 fuel under a given working condition. a value, a third difference between the repeated combustion parameter value and the first combustion parameter value is calculated;
- step S22 Determine whether the third difference is within a reasonable range, if yes, proceed to step S12; otherwise, proceed to step S21.
- the fuel ratio of the verification fuel is E60.
- the combustion parameter debugging method is applied to the debugging of the ignition angle, the air-fuel ratio, the charging efficiency, and the intake and exhaust temperature.
- a combustion parameter debugging device for an engine using an ethanol fuel which is applied to the combustion parameter debugging method according to any one of claims 1 to 5, comprising:
- a parameter acquisition unit configured to obtain a first combustion parameter value of the E22 fuel and the E100 fuel under a given working condition, and verify an actual combustion parameter value of the fuel under a given working condition
- a calculating unit configured to calculate, by using an interpolation formula, a predicted combustion parameter value of the verification fuel and a predicted combustion parameter value of the target fuel, and a first difference between the predicted combustion parameter value and the actual combustion parameter value
- the verification fuel is a fuel with a fuel ratio between E22 and E100
- the interpolation formula is:
- a predicted combustion parameter value a base parameter + an offset * a correction factor, wherein: the base parameter is the first combustion parameter value of the E22 fuel, the offset being the first of the E100 fuel a difference between a combustion parameter value and the first combustion parameter value of the E22 fuel, the correction coefficient being a known coefficient obtained from an ethanol content;
- a determining unit configured to determine whether the first difference is within a reasonable range
- a correcting unit configured to correct the interpolation formula when the first difference is outside a reasonable range
- the calculation unit calculates a predicted combustion parameter value of the target fuel when the first difference is within a reasonable range.
- the present invention provides a combustion parameter debugging method for an engine using an ethanol fuel, first obtaining the first combustion parameter value of the E22 fuel and the E100 fuel under a given working condition, and then calculating and verifying by using an interpolation formula Calculating the predicted combustion parameter value of the fuel, and then obtaining the actual combustion parameter value of the verified fuel under a given working condition, and then calculating a first difference between the predicted combustion parameter value and the actual combustion parameter value, and then determining the first Whether the difference is within a reasonable range, and if so, the predicted combustion parameter value of the target fuel is calculated according to the interpolation formula; otherwise, the interpolation formula is corrected, and then the predicted combustion parameter value of the verification fuel is recalculated until the combustion is predicted The first difference between the parameter value and the actual combustion parameter value is within a reasonable range.
- the above combustion parameter debugging method obtains the first combustion parameter value of the E22 fuel and the E100 fuel, interpolates and calculates the predicted combustion parameter value of the verification fuel, and obtains the actual combustion parameter value of the verification fuel under a given working condition to ensure The accuracy of the interpolation method formula, and thus the combustion parameters of any fuel between E22 and E100, can be accurately obtained, thereby ensuring the combustion performance of the engine.
- combustion parameter debugging device applied to the combustion parameter debugging method should also have corresponding technical effects.
- FIG. 1 is a flowchart of a method for debugging combustion parameters according to an embodiment of the present invention
- FIG. 2 is another flowchart of a method for debugging combustion parameters according to an embodiment of the present invention
- FIG. 3 is a diagram showing the charging efficiency of E22 fuel under given operating conditions in an embodiment of the present invention.
- FIG. 4 is a diagram showing the charging efficiency of E100 fuel under a given working condition in an embodiment of the present invention
- FIG. 5 is a diagram showing the predicted charging efficiency of the E60 fuel calculated by the interpolation method formula in the embodiment of the present invention.
- an embodiment of the present invention provides a method for debugging a combustion parameter of an engine using an ethanol fuel, and the combustion parameters applied by the method may be an ignition angle, an air-fuel ratio, an aeration efficiency, an intake and exhaust temperature, and the like. Includes the following steps:
- E22 fuel is a fuel that is mixed with 22% ethanol and gasoline.
- E100 fuel is 100% ethanol fuel.
- the given working conditions usually include the intake phase of the engine, the pressure ratio between the back pressure and the intake pressure, etc.
- the first combustion parameter value may be a first value of the ignition angle, or a first value of the air-fuel ratio, or a first value of the charging efficiency, or a first value of the intake and exhaust temperature. It should be noted that the combustion parameters can be obtained by using the existing gasoline combustion in the embodiments of the present invention. The test device of the material was carried out.
- the verification fuel is a fuel with a fuel ratio between E22 and E100, such as E30, E40, E70, etc., and the interpolation formula here is:
- Predicted combustion parameter value base parameter + offset * correction factor, wherein: the base parameter is the first combustion parameter value of the E22 fuel, and the offset is the first combustion parameter value of the E100 fuel and the first combustion parameter value of the E22 fuel.
- the difference between the correction factors is a known coefficient based on the ethanol content, and the correction factor corresponding to each of the ethanol fuels may be different.
- the first difference can generally be an absolute value.
- step S140 determining whether the first difference is within a reasonable range, and if so, proceeding to step S151, otherwise proceeding to step S152;
- the reasonable range of the first difference can be determined according to the working condition of the engine, the ratio of the fuel, etc., which is a known amount. If the first difference is within a reasonable range, it means that the acquisition of the combustion parameter and the application of the interpolation formula are used. The accuracy requirement is met, otherwise there is an excessive error in the aforementioned operation process, and correction is needed.
- the target fuel is any ethanol fuel ratio between E22 and E100.
- the combustion parameters of the target fuel can be obtained only by calculation, without repeatedly using the debugging device to obtain combustion parameters.
- the correction of the interpolation method formula can be realized by adjusting only the correction coefficient.
- the adjustment of the correction coefficient is obtained according to the operating conditions of the engine, the ratio of the fuel, and the like.
- the combustion parameter debugging method obtained by the embodiment of the invention obtains the first combustion parameter value of the E22 fuel and the E100 fuel, interpolates and calculates the predicted combustion parameter value of the verification fuel, and obtains the actual combustion of the verification fuel under a given working condition.
- the parameter values are used to ensure the accuracy of the interpolation formula, and thus the combustion parameters of any fuel with a fuel ratio between E22 and E100 can be accurately determined, thereby ensuring the combustion performance of the engine.
- the “correcting the interpolation method formula” in the above step S152 specifically includes the following steps:
- step S220 determining whether the second difference is within a reasonable range, and if so, proceeding to step S231, otherwise proceeding to step S232;
- This calibration process first reacquires the second combustion parameter value of E22 fuel and E100 fuel under given conditions, so that the same combustion parameter of E22 fuel and E100 fuel has two test values, if the difference between the two test values If it is not large, it proves that the accuracy of the acquisition process of the combustion parameters is sufficient. Otherwise, the accuracy of at least one of the two combustion parameters is not enough. Then the second acquired value can be replaced with the final value and calculated. The process accuracy of obtaining the combustion parameter values is sufficient. When the accuracy of the acquisition process of the combustion parameters is sufficient, it indicates that there is a large error in the correction coefficient in the interpolation method formula, and then the adjustment coefficient can be adjusted before debugging. Obviously, the above steps have more fully considered the error problems in the debugging process, and thus improve the accuracy of the debugging method.
- step S100 In order to improve the accuracy of the above-mentioned combustion parameter debugging method to a greater extent, the following steps are further included between step S100 and step S110:
- the processing of the first combustion parameter value is mainly performed according to the data format of the debugging device, and the process and the first combustion parameter value are filled into the parameter spectrum, and errors may occur, resulting in the first combustion parameter value pair.
- the engine's operating conditions have an impact.
- step S310 Determine whether the third difference is within a reasonable range. If yes, go to step S110, otherwise go to step S300.
- Each of the above steps performs the processing of the first combustion parameter value and the input process of the data.
- the calibration is used to reduce the adverse effects of the processing error of the first combustion parameter value on the engine operating condition, thereby achieving the foregoing objectives.
- the fuel ratio of the calibration fuel used in the embodiment of the present invention is E60, that is, a fuel obtained by mixing 60% of ethanol and gasoline, and the fuel is mixed with half of E22 fuel and half of E100 fuel, thereby facilitating Debugging operations are carried out to improve debugging efficiency.
- the data shown in Figure 3-5 is obtained, and the pressure ratio of the intake phase and the back pressure to the intake pressure is set to set the debugging.
- the given operating conditions of the method in turn, the values of the combustion parameters under the given operating conditions.
- the embodiment of the present invention further provides a combustion parameter debugging device for an engine using an ethanol fuel, which is applied to the combustion parameter debugging method described in any one of the above technical solutions, including:
- a parameter acquisition unit configured to obtain a first combustion parameter value of the E22 fuel and the E100 fuel under a given working condition, and verify an actual combustion parameter value of the fuel under a given working condition
- a calculation unit for calculating a predicted combustion parameter value of the verification fuel and a predicted combustion parameter value of the target fuel by using an interpolation formula, and predicting a first difference between the combustion parameter value and the actual combustion parameter value, and verifying that the fuel is fuel
- the interpolation formula is:
- Predicted combustion parameter value base parameter + offset * correction factor, wherein: the base parameter is the first combustion parameter value of the E22 fuel, and the offset is the first combustion parameter value of the E100 fuel and the first combustion parameter value of the E22 fuel The difference between the correction factors is a known coefficient obtained from the ethanol content;
- a determining unit configured to determine whether the first difference is within a reasonable range
- a correction unit configured to correct an interpolation method formula when the first difference is outside a reasonable range
- the calculation unit calculates a predicted combustion parameter value of the target fuel when the first difference is within a reasonable range.
- combustion parameter debugging device applied to the combustion parameter debugging method should also have corresponding technical effects, which will not be described herein.
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Abstract
一种采用乙醇燃料的发动机的燃烧参数调试方法，包括：S11、获取E22燃料和E100燃料在给定工况下的第一燃烧参数值；S12、采用插值法公式计算校验燃料的预测燃烧参数值；S13、获取所述校验燃料在给定工况下的实际燃烧参数值；S14、计算所述预测燃烧参数值与所述实际燃烧参数值之间的第一差值；S15、判断所述第一差值是否位于合理范围内，如果是，进入步骤S16，否则进入步骤S17；S16、根据所述插值法公式计算目标燃料的预测燃烧参数值；S17、对所述插值法公式进行校正，然后进入步骤S12。该燃烧参数调试方法能够保证发动机的燃烧性能。另外，还提供一种采用乙醇燃料的发动机的燃烧参数调试装置。
Description
本发明涉及发动机结构设计技术领域，尤其涉及一种采用乙醇燃料的发动机的燃烧参数调试方法。本发明还涉及一种采用乙醇燃料的发动机的燃烧参数调试装置。
随着石油资源的紧缺，越来越多的代用燃料被开发出来。乙醇燃料作为内燃机代用燃料有以下几个优点：1.辛烷值高，乙醇无毒，对环境无危害，而甲基叔丁基醚被怀集会污染地下水、致癌等，因此乙醇可以代替目前正在使用的无铅抗爆添加剂甲基叔丁基醚；2.乙醇是含氧燃料，蒸发潜热高，发动机燃用乙醇可以实现无烟排放，并能大幅度降低CO排放，同时HC与NOX也可以有不同程度的降低。
乙醇燃料的来源十分广泛，其再生能力强，诸如巴西等农业大国盛产甘蔗，多余的甘蔗可压榨成汁后发酵、脱水，制备成酒精，以解决能源问题。现有市场中，仅存在E22、E100两种配比的燃料，但是这两种燃料的混合使用并不被禁止，也就是说市场上普遍存在的现象是，车辆任意添加不同比例的E22、E100的乙醇燃料，每台车的发动机燃料中的乙醇含量都是灵活可变的。
发动机的电控系统需要根据燃料的性质调整燃烧参数，以此满足发动机的运行要求。然而，传统技术中仅存在基于93#汽油燃料的发动机调试方法，而没有针对乙醇燃料进行燃烧参数调试的方法，导致使用乙醇燃料的发动机的燃烧性能较差。
发明内容
本发明的目的是提供一种采用乙醇燃料的发动机的燃烧参数调试方法，该方法能够提高发动机的燃烧性能。本发明的另一目的是提供一种采用乙醇燃料的发动机的燃烧参数调试装置。
为了实现上述目的，本发明提供如下技术方案：
一种采用乙醇燃料的发动机的燃烧参数调试方法，包括以下步骤：
S11、获取E22燃料和E100燃料在给定工况下的第一燃烧参数值；
S12、采用插值法公式计算校验燃料的预测燃烧参数值，所述校验燃料为燃料配比在E22和E100之间的燃料，所述插值法公式为：
预测燃烧参数值＝基础参数+偏移量*修正系数，其中：所述基础参数为所述E22燃料的所述第一燃烧参数值，所述偏移量为所述E100燃料的所述第一燃烧参数值与所述E22燃料的所述第一燃烧参数值之间的差值，所述修正系数为根据乙醇含量得到的已知系数；
S13、获取所述校验燃料在给定工况下的实际燃烧参数值；
S14、计算所述预测燃烧参数值与所述实际燃烧参数值之间的第一差值；
S15、判断所述第一差值是否位于合理范围内，如果是，进入步骤S16，否则进入步骤S17；
S16、根据所述插值法公式计算目标燃料的预测燃烧参数值；
S17、对所述插值法公式进行校正，然后进入步骤S12。
优选地，在上述燃烧参数调试方法中，所述步骤S17中的“对所述插值法公式进行校正”具体包括以下步骤：
获取所述E22燃料和所述E100燃料在给定工况下的第二燃烧参数值；
计算所述第二燃烧参数值与所述第一燃烧参数值之间的第二差值；
当所述第二差值位于合理范围内时，调整所述修正系数；当所述第二差值位于合理范围之外时，将所述插值法公式中，所述E22燃料和所述E100燃料的所述第一燃烧参数值替换为所述第二燃烧参数值。
优选地，在上述燃烧参数调试方法中，所述步骤S11与所述步骤S12之间还包括以下步骤：
S21、处理所述第一燃烧参数值，并将所述第一燃烧参数值填入调试装置的参数脉谱中，获取所述E22燃料和所述E100燃料在给定工况下的重复燃烧参数值，计算所述重复燃烧参数值与所述第一燃烧参数值之间的第三差值；
S22、判断所述第三差值是否位于合理范围内时，如果是，进入步骤S12；否则，进入步骤S21。
优选地，在上述燃烧参数调试方法中，所述校验燃料的燃料配比为
E60。
优选地，在上述燃烧参数调试方法中，所述燃烧参数调试方法应用于点火角、空燃比、充气效率和进排气温度的调试。
一种采用乙醇燃料的发动机的燃烧参数调试装置，应用于权利要求1-5任一项所述的燃烧参数调试方法，包括：
参数获取单元，用于获取E22燃料和E100燃料在给定工况下的第一燃烧参数值，以及校验燃料在给定工况下的实际燃烧参数值；
计算单元，用于采用插值法公式计算所述校验燃料的预测燃烧参数值和目标燃料的预测燃烧参数值，以及所述预测燃烧参数值与所述实际燃烧参数值之间的第一差值，所述校验燃料为燃料配比在E22和E100之间的燃料，所述插值法公式为：
预测燃烧参数值＝基础参数+偏移量*修正系数，其中：所述基础参数为所述E22燃料的所述第一燃烧参数值，所述偏移量为所述E100燃料的所述第一燃烧参数值与所述E22燃料的所述第一燃烧参数值之间的差值，所述修正系数为根据乙醇含量得到的已知系数；
判断单元，用于判断所述第一差值是否位于合理范围内；
校正单元，用于在所述第一差值位于合理范围之外时对所述插值法公式进行校正；
所述计算单元在所述第一差值位于合理范围内时计算所述目标燃料的预测燃烧参数值。
在上述技术方案中，本发明提供一种采用乙醇燃料的发动机的燃烧参数调试方法，首先获取E22燃料和E100燃料在给定工况下的第一燃烧参数值，再采用插值法公式计算校验燃料的预测燃烧参数值，接着获取校验燃料在给定工况下的实际燃烧参数值，此时即可计算预测燃烧参数值与实际燃烧参数值之间的第一差值，然后判断该第一差值是否位于合理范围内，如果是，则根据插值法公式计算目标燃料的预测燃烧参数值，否则，对插值法公式进行校正，然后重新计算校验燃料的预测燃烧参数值，直至预测燃烧参数值与实际燃烧参数值之间的第一差值位于合理范围内。
上述燃烧参数调试方法通过获取E22燃料和E100燃料的第一燃烧参数值，插值计算出校验燃料的预测燃烧参数值，并获取校验燃料在给定工况下的实际燃烧参数值，以确保插值法公式的准确度，进而精确得出燃料配比在E22和E100之间的任一燃料的燃烧参数，进而保证发动机的燃烧性能。
由于上述燃烧参数调试方法具有上述技术效果，应用于该燃烧参数调试方法的燃烧参数调试装置也应具有相应的技术效果。
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明中记载的一些实施例，对于本领域普通技术人员来讲，还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的燃烧参数调试方法的流程图；
图2为本发明实施例提供的燃烧参数调试方法的另一流程图；
图3为本发明实施例中，在给定工况下，E22燃料的充气效率；
图4为本发明实施例中，在给定工况下，E100燃料的充气效率；
图5为本发明实施例中，采用插值法公式计算得到的E60燃料的预测充气效率。
为了使本领域的技术人员更好地理解本发明的技术方案，下面将结合附图对本发明作进一步的详细介绍。
如图1所示，本发明实施例提供一种采用乙醇燃料的发动机的燃烧参数调试方法，该方法所应用的燃烧参数可以为点火角、空燃比、充气效率和进排气温度等，该方法包括以下步骤：
S100、获取E22燃料和E100燃料在给定工况下的第一燃烧参数值；
E22燃料就是22％的乙醇与汽油混合而得的燃料，E100燃料就是100％的乙醇燃料，前述给定工况通常可包括发动机的进气相位、背压与进气压力之间的压比等等，而第一燃烧参数值可为点火角的第一数值，或者空燃比的第一数值，或者充气效率的第一数值，或者进排气温度的第一数值。需要说明的是，本发明实施例中对燃烧参数的获取均可借助现有的汽油燃
料的试验装置进行。
S110、采用插值法公式计算校验燃料的预测燃烧参数值；
该校验燃料为燃料配比在E22和E100之间的燃料，例如E30、E40、E70等等，此处的插值法公式为：
预测燃烧参数值＝基础参数+偏移量*修正系数，其中：基础参数为E22燃料的第一燃烧参数值，偏移量为E100燃料的第一燃烧参数值与E22燃料的第一燃烧参数值之间的差值，修正系数为根据乙醇含量得到的已知系数，每种配比的乙醇燃料所对应的修成系数可能不相同。
S120、获取校验燃料在给定工况下的实际燃烧参数值；
S130、计算上述预测燃烧参数值与实际燃烧参数值之间的第一差值；
该第一差值通常可为绝对值。
S140、判断上述第一差值是否位于合理范围内，如果是，进入步骤S151，否则进入步骤S152；
第一差值的合理范围可根据发动机的工况、燃料的配比等确定，其为已知量，如果第一差值位于合理范围内，则表示燃烧参数的获取以及插值法公式的运用均达到精度要求，否则即前述的操作过程存在过大的误差，需要进行校正。
S151、根据插值法公式计算目标燃料的预测燃烧参数值；
该目标燃料为配比在E22和E100之间的任一乙醇燃料，此时仅通过计算即可得到该目标燃料的燃烧参数，而无须重复采用调试装置获取燃烧参数。
S152、对插值法公式进行校正，然后进入步骤S12。
对插值法公式的校正，具体可通过仅调整修正系数的方式实现，该修正系数的调整根据发动机的工况、燃料的配比等，结合经验获得。
本发明实施例提供的燃烧参数调试方法通过获取E22燃料和E100燃料的第一燃烧参数值，插值计算出校验燃料的预测燃烧参数值，并获取校验燃料在给定工况下的实际燃烧参数值，以确保插值法公式的准确度，进而精确得出燃料配比在E22和E100之间的任一燃料的燃烧参数，进而保证发动机的燃烧性能。
进一步地，如图2所示，上述步骤S152中的“对插值法公式进行校正”具体包括以下步骤：
S200、获取E22燃料和E100燃料在给定工况下的第二燃烧参数值；
S210、计算第二燃烧参数值与第一燃烧参数值之间的第二差值；
S220、判断第二差值是否位于合理范围内，如果是，进入步骤S231，否则进入步骤S232；
S231、调整修正系数；
S232、将插值法公式中，E22燃料和E100燃料的第一燃烧参数值替换为第二燃烧参数值。
此校正过程首先重新获取E22燃料和E100燃料在给定工况下的第二燃烧参数值，使得E22燃料和E100燃料的同一燃烧参数具有两个测试值，如果此两个测试值之间的差距不大，则证明燃烧参数的获得过程精度足够，否则说明两次燃烧参数的获得过程中至少有一者的精度不够，那么即可将第二次获取的数值替换成最终的数值并进行计算，直至获取燃烧参数数值的过程精度足够。而燃烧参数的获得过程精度足够时，则说明插值法公式中的修正系数存在较大的误差，此时调整修正系数后再进行调试即可。显然，上述各步骤对调试过程存在的误差问题进行了比较充分的考虑，进而提高调试方法的精度。
为了更大程度地提高上述燃烧参数调试方法的精度，步骤S100与步骤S110之间还包括以下步骤：
S300、处理第一燃烧参数值，并将第一燃烧参数值填入调试装置的参数脉谱中，获取E22燃料和E100燃料在给定工况下的重复燃烧参数值，计算重复燃烧参数值与第一燃烧参数值之间的第三差值；
对于第一燃烧参数值的处理主要根据调试装置的数据格式进行数据的整理，该过程以及第一燃烧参数值被填入参数脉谱的过程中均有可能出现误差，导致第一燃烧参数值对发动机的运行状况产生影响。
S310、判断第三差值是否位于合理范围内，如果是，进入步骤S110，否则进入步骤S300。
上述各步骤对第一燃烧参数值的处理过程以及数据的输入过程均进行
校验，以此降低第一燃烧参数值的处理误差对发动机运行状况产生的不良影响，进而达到前述目的。
优选地，本发明实施例采用的校验燃料的燃料配比为E60，即60％的乙醇与汽油混合而得的燃料，该燃料采用一半的E22燃料和一半的E100燃料混合而成，进而便于调试操作的进行，从而提高调试效率。
在一种具体实施例中，以充气效率作为燃烧参数进行调试后，得到如图3-5所示的数据，对进气相位和背压与进气压力的压比进行设置，以设定调试方法的给定工况，进而得到在该给定工况下的燃烧参数的数值。
本发明实施例还提供一种采用乙醇燃料的发动机的燃烧参数调试装置，其应用于上述任一技术方案所描述的燃烧参数调试方法，包括：
参数获取单元，用于获取E22燃料和E100燃料在给定工况下的第一燃烧参数值，以及校验燃料在给定工况下的实际燃烧参数值；
计算单元，用于采用插值法公式计算校验燃料的预测燃烧参数值和目标燃料的预测燃烧参数值，以及预测燃烧参数值与实际燃烧参数值之间的第一差值，校验燃料为燃料配比在E22和E100之间的燃料，插值法公式为：
预测燃烧参数值＝基础参数+偏移量*修正系数，其中：基础参数为E22燃料的第一燃烧参数值，偏移量为E100燃料的第一燃烧参数值与E22燃料的第一燃烧参数值之间的差值，修正系数为根据乙醇含量得到的已知系数；
判断单元，用于判断第一差值是否位于合理范围内；
校正单元，用于在第一差值位于合理范围之外时对插值法公式进行校正；
计算单元在第一差值位于合理范围内时计算目标燃料的预测燃烧参数值。
由于上述燃烧参数调试方法具有上述技术效果，应用于该燃烧参数调试方法的燃烧参数调试装置也应具有相应的技术效果，此处不再赘述。
以上只通过说明的方式描述了本发明的某些示范性实施例，毋庸置疑，对于本领域的普通技术人员，在不偏离本发明的精神和范围的情况下，可以用各种不同的方式对所描述的实施例进行修正。因此，上述附图和描述在本质上是说明性的，不应理解为对本发明权利要求保护范围的限制。
Claims (6)
- 一种采用乙醇燃料的发动机的燃烧参数调试方法，其特征在于，包括以下步骤：S11、获取E22燃料和E100燃料在给定工况下的第一燃烧参数值；S12、采用插值法公式计算校验燃料的预测燃烧参数值，所述校验燃料为燃料配比在E22和E100之间的燃料，所述插值法公式为：预测燃烧参数值＝基础参数+偏移量*修正系数，其中：所述基础参数为所述E22燃料的所述第一燃烧参数值，所述偏移量为所述E100燃料的所述第一燃烧参数值与所述E22燃料的所述第一燃烧参数值之间的差值，所述修正系数为根据乙醇含量得到的已知系数；S13、获取所述校验燃料在给定工况下的实际燃烧参数值；S14、计算所述预测燃烧参数值与所述实际燃烧参数值之间的第一差值；S15、判断所述第一差值是否位于合理范围内，如果是，进入步骤S16，否则进入步骤S17；S16、根据所述插值法公式计算目标燃料的预测燃烧参数值；S17、对所述插值法公式进行校正，然后进入步骤S12。
- 根据权利要求1所述的燃烧参数调试方法，其特征在于，所述步骤S17中的“对所述插值法公式进行校正”具体包括以下步骤：获取所述E22燃料和所述E100燃料在给定工况下的第二燃烧参数值；计算所述第二燃烧参数值与所述第一燃烧参数值之间的第二差值；当所述第二差值位于合理范围内时，调整所述修正系数；当所述第二差值位于合理范围之外时，将所述插值法公式中，所述E22燃料和所述E100燃料的所述第一燃烧参数值替换为所述第二燃烧参数值。
- 根据权利要求1所述的燃烧参数调试方法，其特征在于，所述步骤S11与所述步骤S12之间还包括以下步骤：S21、处理所述第一燃烧参数值，并将所述第一燃烧参数值填入调试装置的参数脉谱中，获取所述E22燃料和所述E100燃料在给定工况下的重复 燃烧参数值，计算所述重复燃烧参数值与所述第一燃烧参数值之间的第三差值；S22、判断所述第三差值是否位于合理范围内时，如果是，进入步骤S12；否则，进入步骤S21。
- 根据权利要求1所述的燃烧参数调试方法，其特征在于，所述校验燃料的燃料配比为E60。
- 根据权利要求1-4中任一项所述的燃烧参数调试方法，其特征在于，所述燃烧参数调试方法应用于点火角、空燃比、充气效率和进排气温度的调试。
- 一种采用乙醇燃料的发动机的燃烧参数调试装置，应用于权利要求1-5任一项所述的燃烧参数调试方法，其特征在于，包括：参数获取单元，用于获取E22燃料和E100燃料在给定工况下的第一燃烧参数值，以及校验燃料在给定工况下的实际燃烧参数值；计算单元，用于采用插值法公式计算所述校验燃料的预测燃烧参数值和目标燃料的预测燃烧参数值，以及所述预测燃烧参数值与所述实际燃烧参数值之间的第一差值，所述校验燃料为燃料配比在E22和E100之间的燃料，所述插值法公式为：预测燃烧参数值＝基础参数+偏移量*修正系数，其中：所述基础参数为所述E22燃料的所述第一燃烧参数值，所述偏移量为所述E100燃料的所述第一燃烧参数值与所述E22燃料的所述第一燃烧参数值之间的差值，所述修正系数为根据乙醇含量得到的已知系数；判断单元，用于判断所述第一差值是否位于合理范围内；校正单元，用于在所述第一差值位于合理范围之外时对所述插值法公式进行校正；所述计算单元在所述第一差值位于合理范围内时计算所述目标燃料的预测燃烧参数值。
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1955450A (zh) * | 2005-10-27 | 2007-05-02 | 日产自动车株式会社 | 用于控制内燃机的装置和方法 |
| CN101153565A (zh) * | 2006-09-25 | 2008-04-02 | 本田技研工业株式会社 | 多种燃料发动机用燃料喷射控制装置 |
| CN101542108A (zh) * | 2007-03-13 | 2009-09-23 | 里卡多公司 | 优化的灵活燃料动力传动系 |
| CN101558225A (zh) * | 2006-12-13 | 2009-10-14 | 丰田自动车株式会社 | 内燃发动机的控制装置和控制方法 |
| WO2010131613A1 (ja) * | 2009-05-12 | 2010-11-18 | 株式会社ケーヒン | 内燃機関の制御装置 |
| US7856966B2 (en) * | 2008-01-15 | 2010-12-28 | Denso Corporation | Controller for internal combustion engine |
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| US6975933B2 (en) * | 2003-02-13 | 2005-12-13 | Nissan Motor Co., Ltd. | Fuel properties estimation for internal combustion engine |
| JP2009068446A (ja) * | 2007-09-14 | 2009-04-02 | Yamaha Motor Co Ltd | 内燃機関の燃料噴射制御装置およびそれを備えた鞍乗型車両 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101153565A (zh) * | 2006-09-25 | 2008-04-02 | 本田技研工业株式会社 | 多种燃料发动机用燃料喷射控制装置 |
| CN101558225A (zh) * | 2006-12-13 | 2009-10-14 | 丰田自动车株式会社 | 内燃发动机的控制装置和控制方法 |
| CN101542108A (zh) * | 2007-03-13 | 2009-09-23 | 里卡多公司 | 优化的灵活燃料动力传动系 |
| US7856966B2 (en) * | 2008-01-15 | 2010-12-28 | Denso Corporation | Controller for internal combustion engine |
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