SU1712801A1 - Method for determining average pressure of mechanical losses in piston ic engines - Google Patents

Method for determining average pressure of mechanical losses in piston ic engines Download PDF

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Publication number
SU1712801A1
SU1712801A1 SU894721550A SU4721550A SU1712801A1 SU 1712801 A1 SU1712801 A1 SU 1712801A1 SU 894721550 A SU894721550 A SU 894721550A SU 4721550 A SU4721550 A SU 4721550A SU 1712801 A1 SU1712801 A1 SU 1712801A1
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SU
USSR - Soviet Union
Prior art keywords
load
fuel consumption
average
consumption
speed
Prior art date
Application number
SU894721550A
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Russian (ru)
Inventor
Анатолий Владимирович Николаенко
Бахриддин Эгамбердиевич Мамадкаримов
Original Assignee
Nikolaenko Anatolij V
Mamadkarimov Bakhriddin E
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Application filed by Nikolaenko Anatolij V, Mamadkarimov Bakhriddin E filed Critical Nikolaenko Anatolij V
Priority to SU894721550A priority Critical patent/SU1712801A1/en
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Publication of SU1712801A1 publication Critical patent/SU1712801A1/en

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Abstract

Изобретение относитс  к тепловым двигател м. Цель изобретени  - повышениеИзобретение относитс  ктепловым двигател м.Целью изобретени   вл етс  повышение производительности путем сокращени  времени и трудоемкости стендовых испытаний.На заданном скоростном h и нагрузочном Рте режимах одновременно замер ют исходные величины дл  определени  сред: него эффективного давлени  в цилиндрах и часового расхода .топлива при работе с нагрузкой. Затем снижают нагрузку двигател  до нул , устанавливают частоту вращени  холостого хода, равную частоте вращени  при заданной ранее нагрузке, и измер ют исходные данные дл  определени  часового расхода топлива на холостом ходу (без нагрузки). На основе полученных данных среднего эффективного давлени  Рте, расходов топлива с нагрузкой Вн и на холостом ходу Вхх определ ют среднее давление механических потерь Pmm по формулепроизводительности путем сокращени  времени и трудоемкости стендовых испытаний. На заданном скоростном и нагрузочном режимах одновременно замер ют исходные величины дл  определени  среднего эффективного давлени  в цилиндрах и часового расхода топлива при работе с нагрузкой. Затем снижают нагрузку двигател  до нул , устанавливают частоту вращени  холостого хода, равную частоте вращени  при заданной ранее нагрузке, и измер ют исходные данные дл  определени  часового расхода топлива на холостом ходу. На основе полученных данных среднего эффективного давлени , расходов топлива с нагрузкой и на холостом ходу определ ют среднее давление механических потерь.СОсРшт ~теВнВхх-10)Наибольшую оперативность оценки среднего давлени  механических потерь достигают, обрабатыва  замеренные исходные данные по формулеPmm ~ЬХХ _ .1ГнА,(2)го00огде РТ - нагрузка на тормозе испытательного стенда;Гн - врем  расхода порции топлива при работе с нагрузкой;Тхх- врем  расхода порции топлива при работе на холостом ходу;А - посто нна  конструкци  двигател , определ ема  при всех известных способах определени  среднего давлени  механических потерь.The invention relates to heat engines. The invention aims to increase productivity by reducing the time and labor of bench tests. At a given speed h and load, the Modes simultaneously measure initial values to determine media: its effective pressure in cylinders and hourly consumption. fuel when working with the load. Then, the engine load is reduced to zero, the idling speed is set equal to the rotational speed at the previously specified load, and initial data are measured to determine the hourly fuel consumption at idle (no load). On the basis of the data obtained, the average effective pressure Pte, the fuel consumption with a load Vn and at idle speed Bhx determine the average pressure of mechanical losses Pmm by formulating the performance by reducing the time and labor intensity of bench tests. At a given speed and load conditions, initial values are simultaneously measured to determine the average effective pressure in the cylinders and the hourly fuel consumption when working with the load. Then, the engine load is reduced to zero, the idling speed is set equal to the rotational speed under the previously specified load, and initial data are measured to determine the hourly fuel consumption. On the basis of the obtained data, the average effective pressure, fuel consumption with load and at idle determine the average pressure of mechanical losses. SSrst ~ teVnVhkh-10) (2) when RT is the load on the brake of the test bench; H is the time of consumption of a portion of fuel when working with a load; Txxx is the time of consumption of a portion of fuel when operating at idle speed; This is the case with all known methods for determining the average pressure of mechanical losses.

Description

Предлагаемым способом определ ют среднее давление механических потерь на любом нагрузочном и скоростном режимах.The proposed method determines the average pressure of mechanical losses in any load and speed modes.

Claims (1)

Формула изо б р е т е н и   Способ определени  среднего давлени  механических потерь поршневых двигателей внутреннего сгорани , заключающийс  в измерении среднего зффективного давлени  в цилиндрах двигател  и расхода топлива при работе двигател  с нагрузкой, отличающийс  тем, что, с целью повышени  производительности путем сокращени  времени и трудоемкости стендовых испытаний, измер ют расход топлива при работе двигател  на холостомThe formula is based on the method of determining the average mechanical pressure loss of a piston internal combustion engine, which consists in measuring the average effective pressure in the engine cylinders and the fuel consumption during engine operation with a load, characterized in that in order to increase productivity by reducing and labor of bench tests, measure fuel consumption when the engine is idling ходу, а среднее давление механических потерь поршневого двигател  внутреннего сгорани  определ ют по формулеthe average mechanical pressure loss of a piston internal combustion engine is determined by the formula р Ртеr mouth mmmm Вн Vn -1 В-1 V XXXx где Pmm - среднее давление механических потерь двигател ;where Pmm - the average pressure of mechanical engine losses; Рте -среднее зффективное давление в цилиндрах двигател , выражающего его нагрузку;Mouth - the average effective pressure in the cylinders of the engine, expressing its load; Вн расход топлива при работе двигател  с нагрузкой;Vn fuel consumption during engine operation with a load; Вхх - расход топлива при работе двигател  на холостом ходу.Vhh - fuel consumption when the engine is idling.
SU894721550A 1989-07-26 1989-07-26 Method for determining average pressure of mechanical losses in piston ic engines SU1712801A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU894721550A SU1712801A1 (en) 1989-07-26 1989-07-26 Method for determining average pressure of mechanical losses in piston ic engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU894721550A SU1712801A1 (en) 1989-07-26 1989-07-26 Method for determining average pressure of mechanical losses in piston ic engines

Publications (1)

Publication Number Publication Date
SU1712801A1 true SU1712801A1 (en) 1992-02-15

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SU894721550A SU1712801A1 (en) 1989-07-26 1989-07-26 Method for determining average pressure of mechanical losses in piston ic engines

Country Status (1)

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SU (1) SU1712801A1 (en)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Стефановской B.C., Скобцов Е.А. и др. Испытани двигателей внутреннего сгорани . М.: Машиностроение, 1972.Айвазон Р.С., Шахназар н В.М. Определение механических потерь в дизеле по на- грузочным характеристикам. Двигателестроение, 1983, Мг 2, с. 43-45. *

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