SU718748A1 - Method of evaluating piston machine technical state - Google Patents
Method of evaluating piston machine technical state Download PDFInfo
- Publication number
- SU718748A1 SU718748A1 SU782635955A SU2635955A SU718748A1 SU 718748 A1 SU718748 A1 SU 718748A1 SU 782635955 A SU782635955 A SU 782635955A SU 2635955 A SU2635955 A SU 2635955A SU 718748 A1 SU718748 A1 SU 718748A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- piston
- evaluating
- piston machine
- machine technical
- technical state
- Prior art date
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- Testing Of Engines (AREA)
Description
Изобретение относитс к области машинрстроенн частности, к испытаюшм двигателей и может быть использовано при оценке технического состо ни кривошипно-шатунного механизма двигател .The invention relates to the field of mechanical engineering, in particular, to engine testing and can be used in assessing the technical condition of a crank drive mechanism of an engine.
Известны способы оценки технического состо ни поршневой машины, преимущественно двигател внутреннего сгорани , путем контрол величины зазоров в сопр жени х кривошипно-шатунного механизма по перемещению поршн в зоне внутренней мертвой точки под действием знакопеременных нагрузок 1.Methods are known for evaluating the technical condition of a piston machine, mainly an internal combustion engine, by controlling the size of gaps in the joints of a crank mechanism by displacing the piston in the zone of internal dead center under the action of alternating loads 1.
При реализации этого способа требуетс весьма громоздка компрессорно-вакуумна уставовка , с помощью которой создают разрежение и сжатие, в надпоршневом пространстве дн принудительного перемещени поршн в пределах зазоров в сопр жени х. Трудоемкость реализации способа D св зи с применением этой установки высока . Способ требует об зательной установки поршн во внутреннюю мертвую точку на такте сжати , когда клапаны закрыты. Точность определени зазоров данным способом небольша , так как не обеспечивает выдавливание смазки из сопр жений, а показани завис т еще и от герметичности клапанов газораспределени . Поэтому ошибка измерени составл ет от 0,05 до 0,1 мм или 15-25% измер емой величины.The implementation of this method requires a very cumbersome compressor-vacuum set-up, with the help of which vacuum and compression are created in the over piston space of the day of forced displacement of the piston within the gaps in the joints. The complexity of the implementation of the method D communication with the use of this installation is high. The method requires the mandatory installation of a piston in the internal dead center at the compression stroke when the valves are closed. The accuracy of determining the gaps in this way is small, since it does not provide for the extrusion of lubricant from the joints, and the readings also depend on the tightness of the valve timing. Therefore, the measurement error is 0.05 to 0.1 mm, or 15-25% of the measured value.
Целью насто щего изобретени вл етс повышение точности путем интенсификации этакопеременных нагрузок.The purpose of the present invention is to improve the accuracy by intensifying this pastoral loads.
Это достигаетс благодар тому, что перемещение поршн контролируют при изменении частоты вращени коленчатого вала из состо ни поко до максимальной.This is due to the fact that the piston movement is controlled when the crankshaft speed changes from a resting state to a maximum.
В этом даапазоне имеет место така частота вращени вала, при которой суммарна сила инерции деталей меньше суммарной силы сопротивлеш1Я движению их, а дл выборки зазоров в противоположном направлении (от оси коленчатого вала к поршню) частоту устанавливают в диапазоне, при котором сила инерции деталей больше силы сопротивлени . При малых частотах вращени коленадтого вала, например при прокрутке его вручную (или пусковым устройством), в момент двнжешш поршн к внутренней мертвой точкеIn this range, there is such a frequency of rotation of the shaft, at which the total force of inertia of parts is less than the total force resisting their movement, and for sampling gaps in the opposite direction (from the axis of the crankshaft to the piston), the frequency is set in the range at which the force of inertia of parts is greater than resistance At low frequencies of rotation of the co-shaft, for example, when it is manually scrolled (or by a trigger), at the moment of a double piston to the internal dead center.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU782635955A SU718748A1 (en) | 1978-06-23 | 1978-06-23 | Method of evaluating piston machine technical state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU782635955A SU718748A1 (en) | 1978-06-23 | 1978-06-23 | Method of evaluating piston machine technical state |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU718748A1 true SU718748A1 (en) | 1980-02-29 |
Family
ID=20773280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU782635955A SU718748A1 (en) | 1978-06-23 | 1978-06-23 | Method of evaluating piston machine technical state |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU718748A1 (en) |
-
1978
- 1978-06-23 SU SU782635955A patent/SU718748A1/en active
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