CN205858433U - Vertical type single-cylinder diesel engine fuel cam - Google Patents
Vertical type single-cylinder diesel engine fuel cam Download PDFInfo
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- CN205858433U CN205858433U CN201620886019.5U CN201620886019U CN205858433U CN 205858433 U CN205858433 U CN 205858433U CN 201620886019 U CN201620886019 U CN 201620886019U CN 205858433 U CN205858433 U CN 205858433U
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- diesel engine
- arc surface
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- cylinder diesel
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Abstract
The open a kind of vertical type single-cylinder diesel engine fuel cam of this utility model, including cam body and machined surface profile, machined surface profile is made up of the first machined surface profile and Second-Type facial contour, first machined surface profile and Second-Type facial contour are symmetrical about cam body center origin, first machined surface profile is made up of the convex abdomen arc surface being linked in sequence, basic circle arc surface, recessed abdomen arc surface, and the arc length of described recessed abdomen arc surface is less than the arc length of convex abdomen arc surface.This utility model is scientific and reasonable for structure, adjusts the features of shape of cam type surface profiled envelope line adaptably according to the control characteristic of electrical control oil spray pump, makes the discharge index of diesel engine be effectively improved with economic performance.
Description
Technical field
This utility model relates to Diesel Engine Technique Field, more particularly, relates to a kind of vertical type single-cylinder diesel engine fuel feeding convex
Wheel.
Background technology
The fuel cam of vertical type single-cylinder diesel engine is symmetrical structure tangent type cam in the market, as shown in Figure 3.Existing
The machined surface profile molded line of the fuel cam of vertical type single-cylinder diesel engine is simple, and fuel feeding acceleration is the highest with degree of accuracy, with electric control pump
Injection characteristics control not mate, so not being suitable for a new generation's environment-friendly and energy-efficient electric-controlled injection diesel engine.
Utility model content
Technical problem to be solved in the utility model is: for the symmetrical tangent type fuel feeding of existing vertical type single-cylinder diesel engine
There is the problem that fuel feeding acceleration is the highest with degree of accuracy in cam, according to the performance indications of the automatically controlled injection diesel of novel vertical single cylinder
And design a kind of vertical type single-cylinder diesel engine fuel cam, make the discharge index of diesel engine and economic performance obtain bigger improvement,
Thus reach the requirement of relevant energy-conservation environmental regulation, to overcome the deficiencies in the prior art.
The technical solution of the utility model is: vertical type single-cylinder diesel engine fuel cam, including cam body and machined surface profile, type
Facial contour is made up of the first machined surface profile and Second-Type facial contour, and the first machined surface profile and Second-Type facial contour are about in cam body
Heart origin symmetry, the first machined surface profile is made up of the convex abdomen arc surface being linked in sequence, basic circle arc surface, recessed abdomen arc surface, described
The arc length of recessed abdomen arc surface is less than the arc length of convex abdomen arc surface.
The arc length of described basic circle arc surface is less than the arc length of recessed abdomen arc surface.
Described cam body is arranged on the gear shaft of vertical type single-cylinder diesel engine, and described machined surface profile is resisted against electrical control oil spray pump
Roller on.
The centrally disposed camshaft hole of described cam body, camshaft hole arranges keyway.
The lift of described recessed abdomen arc surface is rapid, and the fall journey of convex abdomen arc surface is eased up.
This utility model is scientific and reasonable for structure, adjusts cam type surface wheel adaptably according to the control characteristic of electrical control oil spray pump
The features of shape of wide envelope, makes the discharge index of diesel engine be effectively improved with economic performance.
Accompanying drawing explanation
Fig. 1 is the mounting structure schematic diagram of this utility model vertical type single-cylinder diesel engine fuel cam.
Fig. 2 is this utility model vertical type single-cylinder diesel engine fuel cam profile schematic diagram.
Fig. 3 is existing vertical type single-cylinder diesel engine fuel cam profile schematic diagram.
Detailed description of the invention
Of the present utility model embodiment is described below in detail, and the example of described embodiment is shown in the drawings, the most ad initio
Represent same or similar element to same or similar label eventually or there is the element of same or like function.Below by ginseng
It is exemplary for examining the embodiment that accompanying drawing describes, and is only used for explaining this utility model, and it is not intended that to of the present utility model
Limit.
See Fig. 1-2, a kind of vertical type single-cylinder diesel engine fuel cam, including cam body 1 and two pairs of machined surface profiles 2,3, whole
Body structure is double peach-shapeds, and machined surface profile is made up of the convex abdomen arc surface 7 being linked in sequence, basic circle arc surface 6, recessed abdomen arc surface 5, institute
State the arc length arc length less than convex abdomen arc surface of recessed abdomen arc surface.
The arc length of described basic circle arc surface is less than the arc length of recessed abdomen arc surface.
Described cam body is arranged on the camshaft of vertical type single-cylinder diesel engine, and described machined surface profile is resisted against electrical control oil spray pump
Roller 8 on.
The centrally disposed camshaft hole of described cam body, camshaft hole arranges keyway 4.
The lift of described recessed abdomen arc surface is rapid, and the fall journey of convex abdomen arc surface is eased up.
This utility model fuel cam is the performance indications according to the automatically controlled injection diesel of novel vertical single cylinder and specific sets
Meter, cam is mainly made up of structures such as work surface (i.e. basic circle arc surface convex abdomen arc surface and recessed abdomen arc surface) and keyways, whole
Body structure is double peach-shapeds.
Fuel cam is fixed on camshaft by keyway, under diesel engine off position, the basic circle arc surface of cam with
The working surface of electrical control oil spray pump roller fits tightly；During diesel engine work operating, camshaft band moving cam rotates counterclockwise, convex
The work surface of wheel towards recessed abdomen arc surface transition, is forced recessed abdomen arc surface to promote the roller of injection pump to do compression work by basic circle circular arc
Making, so that the plunger motion of pump, the fuel oil in plunger is compressed into high pressure fuel, and when electric control pump opens fuel feeding, fuel oil is with height
Speed, high pressure eject.When cam working face by maximum lift gradually to convex abdomen arc surface transition, the gentle fall of the lift of cam
Low, the roller of injection pump againsts convex abdomen arc surface outward movment, and the fuel pressure in electric control pump plunger is progressively cut down, and returns when last
During to basic circle circular arc work surface, injection pressure is wholly absent.
Only specific embodiment of the utility model disclosed above, is not intended that the limit to this utility model protection domain
System, for this utility model person of an ordinary skill in the technical field, without departing from general idea of the present utility model
Under premise, the variations and alternatives needing not move through creative work made according to technical solutions of the utility model, all should fall at this
Within the protection domain of utility model.
Claims (5)
1. vertical type single-cylinder diesel engine fuel cam, including cam body and machined surface profile, machined surface profile is by the first machined surface profile and
Two machined surface profiles are constituted, it is characterised in that: the first machined surface profile and Second-Type facial contour are symmetrical about cam body center origin, the
One machined surface profile is made up of the convex abdomen arc surface being linked in sequence, basic circle arc surface, recessed abdomen arc surface, the arc of described recessed abdomen arc surface
The long arc length less than convex abdomen arc surface.
Vertical type single-cylinder diesel engine fuel cam the most according to claim 1, it is characterised in that: the arc of described basic circle arc surface
The long arc length less than recessed abdomen arc surface.
Vertical type single-cylinder diesel engine fuel cam the most according to claim 1, it is characterised in that: described cam body is arranged on vertical
On the camshaft of formula single cylinder diesel, described machined surface profile is resisted against on the roller of electrical control oil spray pump.
Vertical type single-cylinder diesel engine fuel cam the most according to claim 3, it is characterised in that: described cam body is centrally disposed
Camshaft hole, camshaft hole arranges keyway.
5. according to the arbitrary described vertical type single-cylinder diesel engine fuel cam of Claims 1-4, it is characterised in that: described recessed abdomen circle
The lift of cambered surface is rapid, and the fall journey of convex abdomen arc surface is eased up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620886019.5U CN205858433U (en) | 2016-08-16 | 2016-08-16 | Vertical type single-cylinder diesel engine fuel cam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620886019.5U CN205858433U (en) | 2016-08-16 | 2016-08-16 | Vertical type single-cylinder diesel engine fuel cam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205858433U true CN205858433U (en) | 2017-01-04 |
Family
ID=57594461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620886019.5U Active CN205858433U (en) | 2016-08-16 | 2016-08-16 | Vertical type single-cylinder diesel engine fuel cam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205858433U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021084715A1 (en) * | 2019-10-31 | 2021-05-06 | 本田技研工業株式会社 | High-pressure fuel pump |
-
2016
- 2016-08-16 CN CN201620886019.5U patent/CN205858433U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021084715A1 (en) * | 2019-10-31 | 2021-05-06 | 本田技研工業株式会社 | High-pressure fuel pump |
| US11795896B2 (en) | 2019-10-31 | 2023-10-24 | Honda Motor Co., Ltd. | High-pressure fuel pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |