CN104712483A - Method for controlling fuel supply advance angle of diesel engine - Google Patents
Method for controlling fuel supply advance angle of diesel engine Download PDFInfo
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- CN104712483A CN104712483A CN201510074661.3A CN201510074661A CN104712483A CN 104712483 A CN104712483 A CN 104712483A CN 201510074661 A CN201510074661 A CN 201510074661A CN 104712483 A CN104712483 A CN 104712483A
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- fuel supply
- advance angle
- supply advance
- diesel engine
- timing gear
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Abstract
The invention discloses a method for controlling the fuel supply advance angle of a diesel engine. The diesel engine is provided with a fuel pump timing gear. The method comprises the step that a nail passing hole of the fuel pump timing gear is set to be round so that the adjusting range of the fuel supply advance angle can be limited. According to the method for controlling the fuel supply advance angle of the diesel engine, the adjusting range of the fuel supply advance angle is narrowed fundamentally, it is guaranteed that the maximum fuel supply advance angle of the assembled diesel engine is only 2-3 degrees larger than the fuel supply advance angle required technically, and therefore the reliability of the engine is guaranteed.
Description
Technical field
The present invention relates to diesel engine part field, particularly a kind of controlling method of fuel injection advanced angle.
Background technique
From the working principle of internal-combustion engine, the performance of diesel engine and reliability and fuel injection advanced angle (abbreviation fuel supply advance angle) closely related, fuel supply advance angle is just determined usually after product completes performance development, for meeting dispatch from the factory test-run a machine and after sales service needs, require that fuel supply advance angle must possess necessarily adjustable scope, especially for the machinery flange pump in upright arrangement diesel engine that gear chamber is rearmounted.
The adjusting method of fuel supply advance angle is, usually the mistake nail of oil pump timing gear is designed to long kidney-shaped hole (length of long kidney-shaped hole is the adjustment range of fuel supply advance angle) when designing, general, the technical requirements of fuel supply advance angle is 15 ° ~ 17 °.At present, by existing assembly technology, when on assembly line, fuel supply advance angle is 16 °, clamping bolt is in the neutral position of the long kidney-shaped hole of oil pump timing gear.When there is after sale the faults such as motor is unable, high fuel consumption, over-emitting black exhaust, need fuel supply advance angle to tune up to process.
But existing oil pump timing gear are designed to long kidney-shaped hole, cause fuel supply advance angle adjustable extent too large, slightly do not note just adjusting excessive, cause the motor later stage to occur reliability failure.Especially on car load, check that adjustment fuel supply advance angle is very inconvenient, be also difficult to adjust accurate.Existing oil pump long kidney-shaped hole can be transferred to maximum fuel supply advance angle (bolt top is to the long kidney-shaped hole leftmost side) and surpass 30 °, open market often occurs engine oil advance angle is 27 °, now, pressure of explosion is more than 200bar, vibration damper surface temperature is more than 120 DEG C, torsional oscillation amplitude exceedes its upper limit, brings too large hidden danger to the reliability of motor.
The information being disclosed in this background technique part is only intended to increase the understanding to general background of the present invention, and should not be regarded as admitting or imply in any form that this information structure has been prior art that persons skilled in the art are known.
Summary of the invention
The object of the present invention is to provide a kind of controlling method of fuel injection advanced angle, fundamentally reduce fuel supply advance angle adjustable extent, ensure the maximum fuel supply advance angle of motor only larger than technical requirements 2 ~ 3 ° assembled, guarantee the reliability of motor.
For achieving the above object, the invention provides a kind of controlling method of fuel injection advanced angle, this diesel engine has oil pump timing gear, and this controlling method is the adjustment range that circle limits fuel supply advance angle by the profile design of the mistake nail by oil pump timing gear.
Preferably, the diameter of modified nail, makes the adjustment range of fuel supply advance angle relative to the large 2-3 ° of reference value.
Preferably, crossing nail is 5 that are evenly arranged.
Compared with prior art, the present invention has following beneficial effect: the controlling method of the fuel injection advanced angle of the present embodiment is by redesigning the mistake nail of oil pump timing gear, fundamentally reduce fuel supply advance angle adjustable extent, ensure the maximum fuel supply advance angle of motor only larger than technical requirements 2 ~ 3 ° assembled, and then the peak of limiting engine pressure of explosion (about 1.5bar), too large hidden danger can not be brought to engine reliability.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of existing oil pump timing gear, illustrates that the shape of nail was long lumbar hole;
Fig. 2 is the structural representation according to oil pump timing gear of the present invention, illustrates that the shape of nail was for circular.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention not by the restriction of embodiment.
Clearly represent unless otherwise other, otherwise in whole specification and claims, term " comprise " or its conversion as " comprising " or " including " etc. by be understood to include the element of stating or constituent element, and do not get rid of other element or other constituent element.
According to the controlling method of a kind of fuel injection advanced angle of the specific embodiment of the invention, this diesel engine has oil pump timing gear, and this controlling method is by by the profile design of the mistake nail 1a of oil pump timing gear being the adjustment range that circular (see Fig. 2) limits fuel supply advance angle.The mistake nail 1 of existing oil pump timing gear is long lumbar hole 1 (see Fig. 1), because this long lumbar hole 1 easily causes fuel supply advance angle adjustable extent too large, does not slightly note just adjusting excessive, causes the motor later stage to occur reliability failure.
The controlling method of the fuel injection advanced angle that the present embodiment provides is by redesigning the mistake nail of oil pump timing gear, ensure that the maximum fuel supply advance angle of motor assembled is only than reference value (technical requirements value, this value is generally 15 ° ~ 17 °) large 2 ~ 3 °, particularly, the mistake nail of oil pump timing gear is designed to circle, by the size of the diameter D of modified nail 1a, fundamentally reduce fuel supply advance angle adjustable extent, make the adjustment range of fuel supply advance angle relative to the large 2-3 ° of reference value, 2 ~ 3 ° of pressure of explosion raise also just about 1.5bar, too large hidden danger can not be brought to engine reliability.Even if dispatch from the factory, test-run a machine and after sales service want fuel supply advance angle to adjust very mostly can not realize.
As a kind of preferred embodiment, the mistake nail of the oil pump timing gear of redesign is 5, and is evenly arranged.
To sum up, the controlling method of the fuel injection advanced angle of the present embodiment is by redesigning the mistake nail of oil pump timing gear, fundamentally reduce fuel supply advance angle adjustable extent, ensure the maximum fuel supply advance angle of motor only larger than technical requirements 2 ~ 3 ° assembled, and then the peak of limiting engine pressure of explosion (about 1.5bar), too large hidden danger can not be brought to engine reliability.
The aforementioned description to concrete exemplary of the present invention is to illustrate and the object of illustration.These descriptions not want the present invention to be defined as disclosed precise forms, and obviously, according to above-mentioned instruction, can much change and change.The object selected exemplary embodiment and describe is to explain certain principles of the present invention and practical application thereof, thus those skilled in the art can be realized and utilize various different exemplary of the present invention and various different selection and change.Scope of the present invention is intended to limited by claims and equivalents thereof.
Claims (3)
1. a controlling method for fuel injection advanced angle, this diesel engine has oil pump timing gear, it is characterized in that, this controlling method is the adjustment range that circle limits described fuel supply advance angle by the profile design of the mistake nail by described oil pump timing gear.
2. the controlling method of fuel injection advanced angle according to claim 1, is characterized in that, changes the described diameter crossing nail, makes the adjustment range of described fuel supply advance angle relative to the large 2-3 ° of reference value.
3. the controlling method of fuel injection advanced angle according to claim 2, is characterized in that, described nail is excessively 5 that are evenly arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510074661.3A CN104712483A (en) | 2015-02-12 | 2015-02-12 | Method for controlling fuel supply advance angle of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510074661.3A CN104712483A (en) | 2015-02-12 | 2015-02-12 | Method for controlling fuel supply advance angle of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104712483A true CN104712483A (en) | 2015-06-17 |
Family
ID=53412126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510074661.3A Pending CN104712483A (en) | 2015-02-12 | 2015-02-12 | Method for controlling fuel supply advance angle of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104712483A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0447160A (en) * | 1990-06-13 | 1992-02-17 | Yanmar Diesel Engine Co Ltd | Fuel injection pump supporting device for engine |
| CN201339526Y (en) * | 2009-02-06 | 2009-11-04 | 黑龙江农业工程职业学院 | Inline pump |
| CN104329174A (en) * | 2014-09-10 | 2015-02-04 | 江苏科技大学 | Device and method for adjusting angle of advance for oil supply of multi-cylinder diesel engine |
-
2015
- 2015-02-12 CN CN201510074661.3A patent/CN104712483A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0447160A (en) * | 1990-06-13 | 1992-02-17 | Yanmar Diesel Engine Co Ltd | Fuel injection pump supporting device for engine |
| CN201339526Y (en) * | 2009-02-06 | 2009-11-04 | 黑龙江农业工程职业学院 | Inline pump |
| CN104329174A (en) * | 2014-09-10 | 2015-02-04 | 江苏科技大学 | Device and method for adjusting angle of advance for oil supply of multi-cylinder diesel engine |
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Application publication date: 20150617 |