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 PDFInfo
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- 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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- USSR - Soviet Union
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- load
- fuel consumption
- average
- consumption
- speed
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- Combined Controls Of Internal Combustion Engines (AREA)
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)
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 |
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SU1712801A1 true SU1712801A1 (en) | 1992-02-15 |
Family
ID=21462158
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU894721550A SU1712801A1 (en) | 1989-07-26 | 1989-07-26 | Method for determining average pressure of mechanical losses in piston ic engines |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU1712801A1 (en) |
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1989
- 1989-07-26 SU SU894721550A patent/SU1712801A1/en active
Non-Patent Citations (1)
Title |
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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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