RU2231780C1 - Procedure establishing octane number of gasoline - Google Patents

Procedure establishing octane number of gasoline Download PDF

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RU2231780C1
RU2231780C1 RU2002131395/28A RU2002131395A RU2231780C1 RU 2231780 C1 RU2231780 C1 RU 2231780C1 RU 2002131395/28 A RU2002131395/28 A RU 2002131395/28A RU 2002131395 A RU2002131395 A RU 2002131395A RU 2231780 C1 RU2231780 C1 RU 2231780C1
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Russia
Prior art keywords
gasoline
octane number
temperature
procedure
dielectric constant
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RU2002131395/28A
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Russian (ru)
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RU2002131395A (en
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А.И. Кавтарадзе (RU)
А.И. Кавтарадзе
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Кавтарадзе Альберт Иванович
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Abstract

FIELD: measurement technology.
SUBSTANCE: procedure includes measurement of gasoline temperature and its dielectric permittivity at this temperature. Octane number is found is correspondence with dependence
Figure 00000011
where A is octane number pf gasoline; X is proportionality factor established experimentally;
Figure 00000012
is dielectric permittivity of gasoline;
Figure 00000013
is temperature coefficient equals to
Figure 00000014
Figure 00000015
where T is gasoline temperature.
EFFECT: reduced labor input and shortened time of realization of procedure.

Description

Изобретение относится к эксплуатации автомобилей, в частности к контролю качества бензина, а именно к определению его октанового числа.The invention relates to the operation of cars, in particular to the quality control of gasoline, and in particular to the determination of its octane number.

Все существующие методы определения октанового числа бензина могут быть сведены к моторному и исследовательскому методам.All existing methods for determining the octane number of gasoline can be reduced to motor and research methods.

Моторным методом определяют октановое число на установке УИТ-65, где сравнивают детонационную стойкость исследуемого бензина с эталонными образцами при температуре горючей смеси 150°С и частоте вращения 900 мин-1.The octane number is determined by the motor method at the UIT-65 installation, where the detonation resistance of the studied gasoline is compared with reference samples at a temperature of a combustible mixture of 150 ° C and a rotation speed of 900 min -1 .

Исследовательский метод заключается в том, что определяют детонационную стойкость при 25-35°С (смесь не подогревают) и частоте вращения 600 мин-1 (см. В.А. Стукалов. Автомобильные эксплуатационные материалы. М.: Форум-Инфра-М, 2002, с. 16-17).The research method consists in determining the detonation resistance at 25-35 ° C (the mixture is not heated) and a rotation frequency of 600 min -1 (see V.A. Stukalov. Automotive maintenance materials. M: Forum-Infra-M, 2002, p. 16-17).

Все эти методы достаточно трудоемки, осуществляются в специальных помещениях хорошо обученным персоналом на громоздких установках, а также их длительность составляет 6-8 часов.All these methods are quite laborious, carried out in special rooms by well-trained personnel in bulky installations, and their duration is 6-8 hours.

Задачей изобретения является снижение трудоемкости определения и уменьшение его длительности.The objective of the invention is to reduce the complexity of determining and reducing its duration.

Поставленная задача решается тем, что в способе определения октанового числа бензина измеряют температуру бензина и его диэлектрическую проницаемость при этой температуре, а октановое число определяют в соответствии с зависимостьюThe problem is solved in that in the method for determining the octane number of gasoline, the temperature of gasoline and its dielectric constant are measured at this temperature, and the octane number is determined in accordance with the dependence

Figure 00000003
Figure 00000003

где А - октановое число бензина;where A is the octane number of gasoline;

X - коэффициент пропорциональности, определяемый экспериментально;X is the coefficient of proportionality determined experimentally;

ε - диэлектрическая проницаемость бензина;ε is the dielectric constant of gasoline;

α - температурный коэффициент, равный

Figure 00000004
;α is the temperature coefficient equal to
Figure 00000004
;

Δt=(Т-20)°С, где Т - температура бензина.Δt = (T-20) ° C, where T is the temperature of gasoline.

Сущность изобретения состоит в том, что авторами изобретения совершенно неожиданно была обнаружена зависимость октанового числа от его диэлектрической проницаемости.The essence of the invention lies in the fact that the inventors completely unexpectedly discovered the dependence of the octane number on its dielectric constant.

Способ осуществляется следующим образом.The method is as follows.

Для определения значений коэффициентов X и α исследовали бензин марок АИ-80, АИ-92 и АИ-95 при различных температурах эксплуатации. Температуру измеряли термометром, опущенным в бак с бензином. Диэлектрическую проницаемость определяли с помощью емкостного датчика, который погружали в бензин. В таблицах 1, 2, 3 приведены результаты измерений и рассчитанные значения коэффициентов.To determine the values of the coefficients X and α, gasoline of the AI-80, AI-92, and AI-95 grades was studied at various operating temperatures. The temperature was measured with a thermometer lowered into a tank with gasoline. The dielectric constant was determined using a capacitive sensor, which was immersed in gasoline. Tables 1, 2, 3 show the measurement results and calculated values of the coefficients.

Figure 00000005
Figure 00000005

Figure 00000006
Figure 00000006

Figure 00000007
Figure 00000007

Для определения октанового числа бензина при Т=20°С измеряли диэлектрическую проницаемость бензина. Измеренное значение ε=2,01. Октановое число рассчитывалось по приведенной выше формуле:To determine the octane number of gasoline at T = 20 ° C, the dielectric constant of gasoline was measured. The measured value is ε = 2.01. The octane number was calculated according to the above formula:

Figure 00000008
Figure 00000008

Таким образом, исследуемый бензин имеет октановое число 80, что совпало с его маркой (АИ-80).Thus, the studied gasoline has an octane number of 80, which coincided with its brand (AI-80).

Claims (1)

Способ определения октанового числа бензина, отличающийся тем, что измеряют температуру бензина и его диэлектрическую проницаемость при этой температуре, а октановое число определяют в соответствии с зависимостьюA method for determining the octane number of gasoline, characterized in that the temperature of gasoline and its dielectric constant are measured at this temperature, and the octane number is determined in accordance with the dependence
Figure 00000009
Figure 00000009
 где А - октановое число бензина;where A is the octane number of gasoline; X - коэффициент пропорциональности, определяемый экспериментально;X is the coefficient of proportionality determined experimentally; ε - диэлектрическая проницаемость бензина;ε is the dielectric constant of gasoline; α - температурный коэффициент, равный
Figure 00000010
;α is the temperature coefficient equal to
Figure 00000010
; Δt=(Т-20)°С, где Т - температура бензина.Δt = (T-20) ° C, where T is the temperature of gasoline.
RU2002131395/28A 2002-11-22 2002-11-22 Procedure establishing octane number of gasoline RU2231780C1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2577290C1 (en) * 2014-10-07 2016-03-10 Сергей Владиславович Дезорцев Method of determining octane number of n-alkanes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2577290C1 (en) * 2014-10-07 2016-03-10 Сергей Владиславович Дезорцев Method of determining octane number of n-alkanes

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