CN2706599Y - Crank phase identifier for four-stroke gasoline engine electro-controlling system - Google Patents
Crank phase identifier for four-stroke gasoline engine electro-controlling system Download PDFInfo
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- CN2706599Y CN2706599Y CN 200420066971 CN200420066971U CN2706599Y CN 2706599 Y CN2706599 Y CN 2706599Y CN 200420066971 CN200420066971 CN 200420066971 CN 200420066971 U CN200420066971 U CN 200420066971U CN 2706599 Y CN2706599 Y CN 2706599Y
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- top dead
- crank
- dead center
- stroke
- gasoline engine
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Abstract
The utility model provides a crank phase identifier for a four-stroke gasoline engine electro-controlling system. The four-stroke gasoline engine electro-controlling system must conduct timing control for ignition, and general project is that a crank is provided with a crank-position pulse generator and a rotation-speed signal pulse generator which are used for inputting rotation-speed information to a control unit, and the information of the top dead center of a jar crank pin of the crank is input; the crank has two top dead centers after two turns in one circle, and the two top dead centers are respectively a compressing top dead centre and an air-exhaust top dead center; the ignition time occurs on the compressing top dead center, and a cam shaft is provided with a hall sensor for identifying the position. The project needs no hall sensor, but a pressure temperature sensor is arranged in an intake manifold branch, and the pressure temperature sensor is positioned on the inlet of a cylinder cap for measuring intake pressure; the pressure of the intake stroke is different from other stroke, the intake stroke is identified so as to calculate the position of the jar compressing top dead center, and the correct time ignition is realized; the sensor has low cost, the sensor can be directly arranged in the intake manifold branch, which lowers the manufacturing cost.
Description
Technical field
The utility model relates to a kind of discriminating gear of four-stroke gasoline engine crank phase.
Background technique
As Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, four-stroke gasoline engine per two changes a work cycle, comprises air inlet 1, compression 2, work done 3 and 4 four strokes of exhaust.Piston comes and goes four one way in top dead center 5,6 of lower dead center, and piston has two top dead centers, two lower dead center.First top dead center is exhaust top dead center 7 or air inlet starting point, so-called exhaust top dead center 7; First lower dead center is air inlet lower dead center 8 or compression starting point.Second top dead center is compression top center 9 or work done starting point, is commonly referred to compression top center; Second lower dead center is work done lower dead center or exhaust starting point 10.The phase point and the piston of crankshaft pin are identical, and compression top center and exhaust top dead center are arranged.The rotating speed of camshaft is 1/2nd of a crankshaft rotating speed, and promptly a work cycle camshaft is goed around, and camshaft is unique fixing corresponding to the compression top center of bent axle or the position of exhaust top dead center.Automatical control system corresponding to petrol engine must be implemented timing control, i.e. near igniting compressor top dead center 9 to time of ignition.
Common scheme is that top dead center pulse signal dish is housed on bent axle, and to control unit input crank pin top dead center information, each work cycle has two top dead center signals certainly.Which is a compression top center in order to differentiate these two top dead center signals, is to use on camshaft Hall transducer to be installed to realize this purpose.Because the position corresponding to the bent axle compression top center on the camshaft is unique, therefore can accurately be discerned the compression top center signal.Use Hall transducer cost height, the mounting structure complexity is not best compression top center detection scheme.
The model utility content
In order to overcome the deficiency of existing crank phase discriminating gear technology, the utility model provides a kind of novel four-stroke gasoline engine automatical control system crank phase discriminating gear, and is simple in structure, is easy to low cost of manufacture is installed.
The utility model adopts such technological scheme: a kind of four-stroke gasoline engine automatical control system crank phase discriminating gear, described crank phase discriminating gear uses a pressure-temperature sensor, be installed in petrol engine and the air intake branch that the suction tude of the first cylinder cylinder head is connected, and be positioned at the place, entry position of air intake branch and cylinder head.
The crank phase discriminating gear that the utility model uses, advantage is: pressure-temperature sensor is installed in the air intake branch of cylinder, and be positioned at the ingress of cylinder head, can directly measure the suction pressure in the cylinder air intake branch, because different during of the pressure during aspirating stroke with other stroke, correct timed ignition is realized in the position that can calculate a cylinder compression top center position and other each cylinder compression top center in the identification aspirating stroke.Be installed in the pressure-temperature sensor in the air intake branch, mounting structure is simple, and cost is low, promptly can realize the phase judgment Unit Installation on the mounting structure after the simplification, has reduced manufacture cost.
The utility model is described in further detail below in conjunction with accompanying drawing.
Description of drawings
Structural representation when Fig. 1 is the piston motion of the utility model four-stroke gasoline engine to top dead center.
Structural representation when Fig. 2 is the piston motion of the utility model four-stroke gasoline engine to lower dead center.
Fig. 3 is the schematic diagram of the utility model four-stroke gasoline engine piston motion.
Fig. 4 is the utility model four-stroke gasoline engine piston motion plotted curve.
Fig. 5 is a structural representation of the present utility model.
Embodiment
As shown in Figure 5, a kind of four-stroke gasoline engine automatical control system crank phase discriminating gear, this crank phase discriminating gear uses a pressure-temperature sensor 14, be installed in petrol engine and the air intake branch 18 that the suction tude 16 of the first cylinder cylinder head 15 is connected, and the entry position that is positioned at air intake branch 18 and cylinder head 15 is located, directly measure the suction pressure in the air intake branch, because different during of the pressure during aspirating stroke with other stroke, the position that in the identification aspirating stroke, can calculate compression top center position and other each cylinder compression top center, and its signal passed to four-stroke vehicle gasoline engine electronic control system, realize correct timed ignition.Between 100Kpa-20Kpa, measure precision is ± 2.5Kpa that bent axle top dead center pulse disc signal location is 216 ° to air inlet pressure sensor to the range of measurement of pressure.
Claims (2)
1, a kind of four-stroke gasoline engine automatical control system crank phase discriminating gear, it is characterized in that: described crank phase discriminating gear is a pressure-temperature sensor, be installed in petrol engine and the air intake branch that the suction tude of cylinder head is connected, be positioned at the place, entry position of air intake branch and cylinder head.
2, four-stroke gasoline engine automatical control system crank phase discriminating gear as claimed in claim 1, it is characterized in that: the operating range of described pressure-temperature sensor should be 100Kpa-20Kpa, and measuring accuracy should be ± 2.5Kpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420066971 CN2706599Y (en) | 2004-06-11 | 2004-06-11 | Crank phase identifier for four-stroke gasoline engine electro-controlling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420066971 CN2706599Y (en) | 2004-06-11 | 2004-06-11 | Crank phase identifier for four-stroke gasoline engine electro-controlling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2706599Y true CN2706599Y (en) | 2005-06-29 |
Family
ID=34852422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420066971 Expired - Fee Related CN2706599Y (en) | 2004-06-11 | 2004-06-11 | Crank phase identifier for four-stroke gasoline engine electro-controlling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2706599Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603739A (en) * | 2013-11-15 | 2014-02-26 | 奇瑞汽车股份有限公司 | Two-cylinder engine cylinder determining system and automobile |
| CN104863655A (en) * | 2015-04-19 | 2015-08-26 | 德州学院 | Phase regulator of parallel connection crankshaft engine |
| CN104279066B (en) * | 2013-07-11 | 2017-02-08 | 北京清研宏达信息科技有限公司 | Fire-catching cylinder identification method of four-cylinder engine |
| CN112814798A (en) * | 2021-01-05 | 2021-05-18 | 潍柴动力股份有限公司 | Engine and control system and control method thereof |
-
2004
- 2004-06-11 CN CN 200420066971 patent/CN2706599Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104279066B (en) * | 2013-07-11 | 2017-02-08 | 北京清研宏达信息科技有限公司 | Fire-catching cylinder identification method of four-cylinder engine |
| CN103603739A (en) * | 2013-11-15 | 2014-02-26 | 奇瑞汽车股份有限公司 | Two-cylinder engine cylinder determining system and automobile |
| CN103603739B (en) * | 2013-11-15 | 2016-01-27 | 奇瑞汽车股份有限公司 | A kind of two cylinder cylinder decision system and automobile |
| CN104863655A (en) * | 2015-04-19 | 2015-08-26 | 德州学院 | Phase regulator of parallel connection crankshaft engine |
| CN104863655B (en) * | 2015-04-19 | 2018-09-04 | 德州学院 | And connect crank-axle engine phase regulator |
| CN112814798A (en) * | 2021-01-05 | 2021-05-18 | 潍柴动力股份有限公司 | Engine and control system and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Li Xubing Document name: Notification of Termination of Patent Right |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |