CN206329428U - A kind of compact overhead direct fuel-injection engine high pressure oil rail arrangement - Google Patents
A kind of compact overhead direct fuel-injection engine high pressure oil rail arrangement Download PDFInfo
- Publication number
- CN206329428U CN206329428U CN201621354440.8U CN201621354440U CN206329428U CN 206329428 U CN206329428 U CN 206329428U CN 201621354440 U CN201621354440 U CN 201621354440U CN 206329428 U CN206329428 U CN 206329428U
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- Prior art keywords
- pressure oil
- high pressure
- oil rail
- cylinder head
- valve chamber
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
A kind of compact overhead direct fuel-injection engine high pressure oil rail arrangement, belongs to automotive engine applications.The utility model includes cylinder head, valve chamber housing, high-pressure oil pump, injection line, high pressure oil rail assembly, multiple ignition coils, multiple fuel injectors and multiple spark plugs, cylinder head upper end is provided with valve chamber housing, multiple spark plugs and multiple fuel injectors are arranged in middle part in cylinder head, multiple spark plugs and multiple fuel injectors are arranged alternately successively, high pressure oil rail assembly is fixed in cylinder head, multiple ignition coils are each attached on valve chamber housing, each ignition coil is in contact with corresponding spark plug top, high-pressure oil pump is fixed on valve chamber housing, high-pressure oil pump is connected by high-pressure oil pipe with high pressure oil rail assembly.The utility model can complete high pressure oil rail arrangement in less space, it is to avoid interfere with the circumferential component such as ignition coil, so that engine structure is compact, be easy to vehicle to carry, to be applicable vehicle in extensive range.
Description
Technical field
The utility model is related to a kind of direct fuel-injection engine high pressure oil rail arrangement, belongs to automotive engine applications.
Background technology
The problem of bringing exhaust emission and energy shortage to environment with automobile is increasingly serious, and China issued in 2013
State's V discharge standards pass through《Passenger Car Fuel Consumption Standard consumption limit value》Fourth stage standard.Because current Chinese gasoline car occupies phase
Work as vast scale, so there is the development of the in-cylinder direct-jet technology of certain technical advantage in terms of reduction gasoline car oil consumption and discharge just
It is particularly important.Gasoline in-cylinder direct-jet (GDI) be improve fuel economy important means, in recent years, using in-cylinder direct-jet as
The research of the new mixed Daqu pattern represented drastically increases the fuel economy of gasoline engine with application.
But existing direct fuel-injection engine high pressure oil rail assembly is present, and volume is big, structure is not compact, and oily beam is done with valve, piston
Relate to the problem of risk is big.
Utility model content
The utility model purpose is to propose a kind of compact overhead direct fuel-injection engine high pressure oil rail arrangement, its structure
It is compact, it is reasonable in design, arrangement can will be put in high pressure oil rail, ignition coil and is arranged in cylinder head.
Above-mentioned purpose is realized, the technical scheme that the utility model is taken is as follows：
A kind of compact overhead direct fuel-injection engine high pressure oil rail arrangement, including cylinder head, valve chamber housing, hydraulic oil
In pump, injection line, high pressure oil rail assembly, multiple ignition coils, multiple fuel injectors and multiple spark plugs, described cylinder head
End is provided with valve chamber housing, and multiple spark plugs and multiple fuel injectors are arranged in middle part in cylinder head, described multiple spark plugs and
Multiple fuel injectors are arranged alternately successively, and high pressure oil rail assembly is fixed in cylinder head, and described multiple ignition coils are each attached to
On valve chamber housing, each described ignition coil is in contact with corresponding spark plug top, and high-pressure oil pump is fixed on valve
On the case of room, high-pressure oil pump is connected by high-pressure oil pipe with high pressure oil rail assembly.
The utility model is relative to the beneficial effect of prior art：
, can be in less sky the utility model proposes a kind of compact overhead direct fuel-injection engine high pressure oil rail arrangement
In complete high pressure oil rail arrangement, it is to avoid interfere with the circumferential component such as ignition coil, so that engine structure is compact, be easy to whole
Car is carried, applicable vehicle is in extensive range, and is easily assembled and is dismantled.High pressure oil rail assembly is arranged in engine by the utility model
In cylinder head, with compact conformation, oily beam and valve, piston interference risk is small the features such as.
Brief description of the drawings
Fig. 1 is a kind of front view of compact overhead direct fuel-injection engine high pressure oil rail arrangement of the present utility model.
Wherein：1- cylinder head, 2- valve chamber housings, 3- ignition coils, 4- high-pressure oil pumps, 5- injection lines, 6- high pressures
Oily rail assembly, 7- fuel injectors, 8- spark plugs.
The technical solution of the utility model is further described below in conjunction with the accompanying drawings, but is not limited thereto, it is every
Technical solutions of the utility model are modified or equivalent, without departing from the spirit and model of technical solutions of the utility model
Enclose, all should cover in protection domain of the present utility model.
Embodiment
Embodiment one：As shown in Figure 1：A kind of compact overhead direct fuel-injection engine high pressure oil rail arrangement, bag
Include cylinder head 1 (be engine cylinder cap), it is valve chamber housing 2, high-pressure oil pump 4, injection line 5, high pressure oil rail assembly 6, many
Individual ignition coil 3, multiple fuel injectors 7 and multiple spark plugs 8, the described upper end of cylinder head 1 are provided with valve chamber housing 2, cylinder
The multiple spark plugs 8 of middle part arrangement and multiple fuel injectors 7 in lid 1, described multiple spark plugs 8 and multiple fuel injectors 7 replace successively
Set, high pressure oil rail assembly 6 is fixed in cylinder head 1 and (ensures that fuel injector 7 is arranged in combustion chamber center), described multiple igniting
Coil 3 is each attached on valve chamber housing 2, and each described ignition coil 3 is in contact with the corresponding top of spark plug 8, high
Pressure oil pump 4 is fixed on valve chamber housing 2, and high-pressure oil pump 4 is connected by high-pressure oil pipe 5 with high pressure oil rail assembly 6.
Embodiment two：As shown in figure 1, a kind of compact overhead direct fuel-injection engine described in embodiment one
High pressure oil rail arrangement, each described spark plug 8 is arranged near adjacent fuel injector 7.
Operation principle：During utility model works, the gasoline in fuel tank enters high-pressure oil pump 4, by relatively low pressure
Fuel pressurization to high pressure, it is maximum up to 20MPa, the fuel oil after boosting is transported to by high pressure oil rail by injection line 5 total
Into 6, the steady pressure of high pressure oil rail assembly 6, ECM controls the magnetic valve of fuel injector 7 in pulse width modulation manner, it is possible to achieve to spray
Oily flow and the precise control on opportunity.In order to reach the purpose of more fuel-economizing, ECM is opened by controlling the magnetic valve of fuel injector 7
On opportunity, realize stratified combustion.I.e. in air inlet oil spout at initial stage, so that fuel oil is uniformly distributed in cylinder, the oil spout again of air inlet later stage is dense mixed
Conjunction gas is gathered in the surrounding of spark plug 8 in cylinder internal upper part and is ignited.
High pressure oil rail assembly 6 is arranged in the middle part of cylinder head 1 by the utility model on the premise of prior art is met, real
Existing fuel injector 7 is arranged in combustion chamber center, and the unlatching opportunity of fuel injector 7 is controlled by ECM blases, stratified combustion is realized,
It is finally reached the purpose of fuel-economizing.
Claims (2)
1. a kind of compact overhead direct fuel-injection engine high pressure oil rail arrangement, including cylinder head (1), valve chamber housing (2), height
Pressure oil pump (4), injection line (5), high pressure oil rail assembly (6), multiple ignition coils (3), multiple fuel injectors (7) and multiple fire
Hua Sai (8), it is characterised in that：Described cylinder head (1) upper end is provided with middle part in valve chamber housing (2), cylinder head (1) and arranged
Multiple spark plugs (8) and multiple fuel injectors (7), described multiple spark plugs (8) and multiple fuel injectors (7) are arranged alternately successively,
High pressure oil rail assembly (6) is fixed in cylinder head (1), and described multiple ignition coils (3) are each attached to valve chamber housing (2)
On, each described ignition coil (3) is in contact with corresponding spark plug (8) top, and high-pressure oil pump (4) is fixed on cavaera
On case (2), high-pressure oil pump (4) is connected by high-pressure oil pipe (5) with high pressure oil rail assembly (6).
2. a kind of compact overhead direct fuel-injection engine high pressure oil rail arrangement according to claim 1, it is characterised in that：
Each described spark plug (8) is arranged near adjacent fuel injector (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621354440.8U CN206329428U (en) | 2016-12-10 | 2016-12-10 | A kind of compact overhead direct fuel-injection engine high pressure oil rail arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621354440.8U CN206329428U (en) | 2016-12-10 | 2016-12-10 | A kind of compact overhead direct fuel-injection engine high pressure oil rail arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206329428U true CN206329428U (en) | 2017-07-14 |
Family
ID=59289689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621354440.8U Active CN206329428U (en) | 2016-12-10 | 2016-12-10 | A kind of compact overhead direct fuel-injection engine high pressure oil rail arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206329428U (en) |
-
2016
- 2016-12-10 CN CN201621354440.8U patent/CN206329428U/en active Active
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