SU1583767A1 - Method of determining traction resistance of agricultural machines and implements - Google Patents
Method of determining traction resistance of agricultural machines and implements Download PDFInfo
- Publication number
- SU1583767A1 SU1583767A1 SU874328575A SU4328575A SU1583767A1 SU 1583767 A1 SU1583767 A1 SU 1583767A1 SU 874328575 A SU874328575 A SU 874328575A SU 4328575 A SU4328575 A SU 4328575A SU 1583767 A1 SU1583767 A1 SU 1583767A1
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- SU
- USSR - Soviet Union
- Prior art keywords
- agricultural machines
- resistance
- unit
- rotor
- drag
- Prior art date
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- Supercharger (AREA)
Abstract
Изобретение относитс к измерительной технике и предназначено дл измерени т гового сопротивлени сельскохоз йственных машин при их энергетической оценке и в услови х эксплуатации дл сельскохоз йственных машин, агрегатируемых тракторами с двигателем внутреннего сгорани с турбонаддувом. Цель изобретени - снижение трудоемкости определени т гового сопротивлени сельскохоз йственных машин и орудий. Дл этого на фиксированной частоте вращени коленсатого вала двигател последовательно измер ют частоты вращени ротора турбокомпрессора сначала при холостом ходе агрегата, затем при рабочем ходе при одной и той же рабочей передаче. Разница между этими частотами вращени пропорциональна т говому сопротивлению агрегата. По этой разнице суд т о значении т гового сопротивлени .The invention relates to a measurement technique and is intended to measure the drag resistance of agricultural machines during their energy evaluation and under operating conditions for agricultural machines aggregated by tractors with a turbocharged internal combustion engine. The purpose of the invention is to reduce the labor intensity of determining the drag of agricultural machines and tools. To do this, at a fixed rotational speed of the crankshaft of the engine, the rotational speeds of the rotor of the turbocharger are sequentially measured, first when the unit is idling, then at the working stroke at the same working transmission. The difference between these rotational frequencies is proportional to the aggregate thrust resistance. It is from this difference that the value of the drag is judged.
Description
Изобретение относитс к приборостроению и предназначено дл измерени , т гового сопротивлени сельскохоз йственных машин при их энергетической оценке и в услови х эксплуатации, агрегатируемых с тракторами с двигател ми внутреннего сгорани с турбонаддувом.The invention relates to instrumentation engineering and is intended to measure the drag resistance of agricultural machines during their energy evaluation and under operating conditions mounted on tractors with turbocharged internal combustion engines.
Целью изобретени вл етс снижение трудоемкости определени т гового сопротивлени сельскохоз йственных машин и орудий.The aim of the invention is to reduce the laboriousness of determining the drag of agricultural machines and implements.
Способ реализуетс следующим образом .The method is implemented as follows.
Экспериментально установлено, что зависимость т гового сопротивлени агрегата от разности частот вращени ротора турбокомпрессора при рабочем и холостом проходах агрегата при одной и той же частоте вращени коленчатого вала носит линейный характер.It has been established experimentally that the dependence of the tractor resistance of the unit on the difference in the rotational frequencies of the rotor of the turbocharger with the working and idling passes of the unit at the same rotational speed of the crankshaft is linear.
С помощью тахометра измер ют частоту вращени коленчатого вала и частоту вращени ротора турбокомпрессора ИТХ при холостом проходе агрегата. Затем на той же передаче эту же частоту вращени ПТР измер ют при рабочем проходе агрегата. При известном заранее значении коэффициента пропорциональности по выражению R К (птр - Птх) определ ют т говое сопротивление R агрегата.Using a tachometer, the rotational speed of the crankshaft and the rotational speed of the rotor of the ITX turbocharger are measured when the unit is idle. Then, on the same gear, the same rotational speed of the MFR is measured during the working pass of the unit. If the value of the coefficient of proportionality is known in advance, the traction resistance R of the aggregate is determined from the expression R К (Птр - Птх).
Коэффициент К дл данного конкретного агрегата определ ют перед началом изслCoefficient K for this particular unit is determined before starting the test.
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мерений, определ т говое сопротивлениеизмер ют частоту вращени ротора Турбо- независимым способом, с помощью т гово-компрессора при рабочем ходе агрегата, и го динамометра.по разнице этих частот определ ют т говоеmeasures, the resistance is measured by the rotor speed in a turbo-independent manner, with the help of a traction compressor during the working stroke of the unit, and a dynamometer. the difference between these frequencies is determined by the gravity
сопротивление агрегата, по соотношению:unit resistance, in relation to:
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU874328575A SU1583767A1 (en) | 1987-09-29 | 1987-09-29 | Method of determining traction resistance of agricultural machines and implements |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU874328575A SU1583767A1 (en) | 1987-09-29 | 1987-09-29 | Method of determining traction resistance of agricultural machines and implements |
Publications (1)
Publication Number | Publication Date |
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SU1583767A1 true SU1583767A1 (en) | 1990-08-07 |
Family
ID=21336439
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU874328575A SU1583767A1 (en) | 1987-09-29 | 1987-09-29 | Method of determining traction resistance of agricultural machines and implements |
Country Status (1)
Country | Link |
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SU (1) | SU1583767A1 (en) |
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1987
- 1987-09-29 SU SU874328575A patent/SU1583767A1/en active
Non-Patent Citations (1)
Title |
---|
Высоцкий А.А. Динамометрирование сельскохоз йственных машин. - М.: Машиностроение, 1968, с. 166 - 170. Испытани сельскохоз йственной техники. Методы энергетической оценки. ОСТ 70.22-73В/0, Союзсельхозтехника, 1980. * |
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