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基于等参变换的发动机负荷特性插值方法研究

DOI: 10.3969/j.issn.1674-0696.2014.02.31, PP. 138-141

Keywords: 车辆工程,负荷特性,外插法,等参变换插值法,vehicleengineering,loadcharacteristic,extrapolationmethod,isoparametrictransfonnationinterpolationmethod

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Abstract:

:？发动机负荷特性实验数据是计算汽车负荷特性的重要参数。利用负荷特性实验数据，建立了等参变换插值法的数学模型，得到了汽车在任意工况下的负荷特性（包括负荷燃油特性和负荷排放特性）；利用发动机在怠速工况时单位时间内的燃油消耗率数据，通过外插法得到了发动机在怠速和输出扭矩为0时单位时间内的燃油消耗率；通过实例验证了计算模型推导和建立的有效性。

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