SU862029A1 - Device for internal combustion engine diagnostics - Google Patents
Device for internal combustion engine diagnostics Download PDFInfo
- Publication number
- SU862029A1 SU862029A1 SU792858575A SU2858575A SU862029A1 SU 862029 A1 SU862029 A1 SU 862029A1 SU 792858575 A SU792858575 A SU 792858575A SU 2858575 A SU2858575 A SU 2858575A SU 862029 A1 SU862029 A1 SU 862029A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- internal combustion
- combustion engine
- engine diagnostics
- diagnostics
- signal
- Prior art date
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- Combined Controls Of Internal Combustion Engines (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Description
Изобретение относитс к диагностическим устройствам дизельного двигател и в частности его топливной системы .This invention relates to diagnostic devices for a diesel engine, and in particular its fuel system.
Известны устройства дл диагностировани двигател внутреннего сгорани , содержащие источник опорного напр жени , схему управлени , дешифратор , два блока управлени и три схемы преобразовани , перва .и втора из которых выполнены в виде вибропреобразовател , фильтра, компаратора и одновибратора, св занных последовательно , элемента запоминани и делител напр жени , включенных между выходом фильтра и другим входом компаратора , треть схема выполнена в виде датчика опорной точки, преобразовател временных интервалов и индикатора , св занных последовательно, а каждый из блоков управлени выполнен в виде ключа, интегратора и пороговой cxeNH, соединенных последовательно , причем, ключи схем св заны между собой непосредственно, а пороговые схемы - через дешифратор, схема управлени св зана с ключами , входом дешифратора и его sttхопом . который подключен к делителю первой схемы преобразовани , а источник опорного напр жени подключен на входгк ключей 1.Devices for diagnosing an internal combustion engine are known, comprising a reference voltage source, a control circuit, a decoder, two control units and three conversion circuits, the first and second of which are made in the form of a vibrator, a filter, a comparator and a single vibrator connected in series to the memory element and a voltage divider connected between the output of the filter and the other input of the comparator, the third circuit is designed as a sensor of a reference point, a time interval converter and an indicator, each of the control units is made in the form of a key, an integrator and a threshold cxeNH connected in series, the keys of the circuits are directly interconnected, and the threshold circuits are connected via a decoder, the control circuit is connected to the keys, the decoder input and its stthopom which is connected to the divider of the first conversion circuit, and the source of the reference voltage is connected to the input keys 1.
Синхронизаци измерени в данном устройстве проводитс за каждый цикл работы цилиндра двигател от виброимпульса форсунки, работа которой ,л предшествует провер емому рабочему процессу, например подаче топлива секцией. Так как характер виброимпульсов удар ющихс кинематических пар зависит от многих факторов, сигнал от форсунки окажетс нестабиль15 ным по амплитуде. Несмотр на то, что фильтраци сигнала.в ультразвуковом диапазоне значительно улучшает среднее отношение сигнгш-помеха, в некоторые перибды с1мплитуда син20 хроимпульса ниже уровн помех, особенно при некачественной форсунке. В этом случае устройство либо пропускает полезный сигнал, либо срабатывает от помех. Это делает отсчет The synchronization of the measurement in this device is carried out for each cycle of the engine cylinder from the injector vibration pulse, whose operation precedes the work process being checked, for example, the fuel is supplied by the section. Since the nature of the vibratory pulses of impacting kinematic pairs depends on many factors, the signal from the nozzle will turn out to be unstable in amplitude. Despite the fact that filtering the signal in the ultrasonic range significantly improves the average signal-to-noise ratio, in some peribdas the amplitude of the sync pulse is lower than the noise level, especially if the injector is of poor quality. In this case, the device either passes a useful signal, or is triggered by interference. It makes a countdown
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU792858575A SU862029A1 (en) | 1979-12-25 | 1979-12-25 | Device for internal combustion engine diagnostics |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU792858575A SU862029A1 (en) | 1979-12-25 | 1979-12-25 | Device for internal combustion engine diagnostics |
Publications (1)
Publication Number | Publication Date |
---|---|
SU862029A1 true SU862029A1 (en) | 1981-09-07 |
Family
ID=20867459
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU792858575A SU862029A1 (en) | 1979-12-25 | 1979-12-25 | Device for internal combustion engine diagnostics |
Country Status (1)
Country | Link |
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SU (1) | SU862029A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2519293C2 (en) * | 2009-03-02 | 2014-06-10 | Юрий Павлович Долгов | Device for diagnostics of carburetor and fuel pump of the automobile engine |
-
1979
- 1979-12-25 SU SU792858575A patent/SU862029A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2519293C2 (en) * | 2009-03-02 | 2014-06-10 | Юрий Павлович Долгов | Device for diagnostics of carburetor and fuel pump of the automobile engine |
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