CN201321879Y - Gasoline engine with variable valve timing mechanism - Google Patents
Gasoline engine with variable valve timing mechanism Download PDFInfo
- Publication number
- CN201321879Y CN201321879Y CNU2008202229439U CN200820222943U CN201321879Y CN 201321879 Y CN201321879 Y CN 201321879Y CN U2008202229439 U CNU2008202229439 U CN U2008202229439U CN 200820222943 U CN200820222943 U CN 200820222943U CN 201321879 Y CN201321879 Y CN 201321879Y
- Authority
- CN
- China
- Prior art keywords
- camshaft
- piston
- timing mechanism
- cylinder
- variable valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 230000007246 mechanism Effects 0.000 title claims abstract description 21
- 239000003502 gasoline Substances 0.000 title abstract description 4
- 239000000446 fuel Substances 0.000 claims abstract description 10
- 238000002485 combustion reaction Methods 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 6
- 239000010959 steel Substances 0.000 claims abstract description 6
- 238000002347 injection Methods 0.000 claims abstract description 5
- 239000007924 injection Substances 0.000 claims abstract description 5
- 239000003921 oil Substances 0.000 claims description 20
- 239000000295 fuel oil Substances 0.000 claims description 12
- 238000005461 lubrication Methods 0.000 claims description 6
- 238000010304 firing Methods 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 238000007599 discharging Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 210000000707 wrist Anatomy 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Lubrication Of Internal Combustion Engines (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
一种带可变气门正时机构的汽油机，其结构型式为往复活塞式、直列立式、四气缸、四冲程、水冷、电控燃油喷射式，气缸体采用龙门式、无缸套结构形式，气缸盖燃烧室为楔形，火花塞处于燃烧室中心位置，配气机构采用液压挺柱与摇臂结合式，活塞为短裙活塞，采用薄型活塞环、钢片式油环，其特征是：凸轮轴正时机构是凸轮轴可变气门正时机构，凸轮轴为侧置单凸轮轴，机油泵由曲轴直接驱动。本实用新型提供的汽油机排量1.997L，额定功率78kW，扭矩178N.m，最低燃油消耗率≤255g/kW.h，排放可达欧III/欧IV，主要用于轻型客车、轻型越野车、轻型客货两用车的配套动力，也可作为同类进口汽车的替代动力。
A gasoline engine with a variable valve timing mechanism, its structural type is reciprocating piston type, in-line vertical type, four-cylinder, four-stroke, water-cooled, electronically controlled fuel injection type, and the cylinder block adopts a gantry type without a cylinder liner. The combustion chamber of the cylinder head is wedge-shaped, the spark plug is in the center of the combustion chamber, the gas distribution mechanism adopts a combination of hydraulic tappet and rocker arm, the piston is a short skirt piston, and thin piston rings and steel sheet oil rings are used. The characteristics are: camshaft The timing mechanism is a camshaft variable valve timing mechanism, the camshaft is a side-mounted single camshaft, and the oil pump is directly driven by the crankshaft. The gasoline engine provided by the utility model has a displacement of 1.997L, a rated power of 78kW, a torque of 178N.m, a minimum fuel consumption rate of ≤255g/kW.h, and emissions up to Euro III/Euro IV. It is mainly used for light passenger cars, light off-road vehicles, The supporting power of light passenger and cargo vehicles can also be used as a substitute power for similar imported vehicles.
Description
Technical field
The utility model belongs to internal-combustion engine, relates to a kind of petrol engine of belt variable valve timing mechanism.Be the improvement of prior art, be specially adapted to existing 4G19 type petrol engine and adopt, carry out technology upgrading.
Background technique
Along with highway in China is transported towards high speed, economic, comfortable and low pollutionization development, and national adding gradually sternly car load oil consumption, emission limit.
In the prior art, the 4G19 petrol engine is by cylinder block, cylinder head, piston and connecting rod, camshaft timing mechanism, distribution device, air inlet system and exhaust system, electric control fuel oil jet system, fuel oil supply system, the electronic control ignition system, lubrication system, cooling system, component such as starting system are formed, its structural type is a reciprocating piston type, in upright arrangement vertical, four-cylinder, four-stroke, water-cooled, the electronic fuel injection formula, described cylinder block adopts planer-type, no cylinder sleeve structural type, described head combustion chamber is a wedge shape, spark plug is in the central position, firing chamber, described distribution device adopts hydraulic tappet and rocking arm convolution, cylinder bore is 86 millimeters, and piston stroke is 86 millimeters; Described piston is the skirt piston, and depth pistion is 70 millimeters, and compression height is 35 millimeters, adopts slim piston ring, steel disc formula oil ring; Existing 4G19 petrol engine since do not adopt camshaft Variable Valve Time gear (being VVT, as follows), oil pump be arranged in the cylinder block right side, by camshaft actuated etc., be difficult to satisfy Europe III or Europe IV emission standard, oil consumption is higher.
Summary of the invention
The purpose of this utility model is intended to overcome deficiency of the prior art, and a kind of petrol engine that can satisfy Europe III or Europe IV emission standard, hang down the belt variable valve timing mechanism of fuel oil consumption is provided.
Content of the present utility model is: a kind of petrol engine of belt variable valve timing mechanism, by cylinder block, cylinder head, piston and connecting rod, camshaft timing mechanism, distribution device, air inlet system and exhaust system, electric control fuel oil jet system, fuel oil supply system, the electronic control ignition system, lubrication system, cooling system, component such as starting system are formed, its structural type is a reciprocating piston type, in upright arrangement vertical, four-cylinder, four-stroke, water-cooled, the electronic fuel injection formula, described cylinder block adopts planer-type, no cylinder sleeve structural type, described head combustion chamber is a wedge shape, spark plug is in the central position, firing chamber, described distribution device adopts hydraulic tappet and rocking arm convolution, cylinder bore is 86 millimeters, and piston stroke is 86 millimeters; Described piston is the skirt piston, and depth pistion is 70 millimeters, and compression height is 35 millimeters, adopts slim piston ring, steel disc formula oil ring, it is characterized in that: described camshaft timing mechanism is the camshaft Variable Valve Time gear.
In the content of the present utility model: described camshaft is the side single camshaft, is furnished with 4 intake cams and 4 exhaust cams on the camshaft.
In the content of the present utility model: the oil pump internal rotor in the described lubrication system is installed on the crankshaft front end axle journal, and oil pump is directly driven by bent axle.
Compared with prior art, the utlity model has following characteristics and beneficial effect:
(1) adopt the utility model, petrol engine discharge capacity 1.997L, rated power 78kW, moment of torsion 178N.m, minimum specific fuel consumption≤255g/kW.h, discharging can reach III/ Europe, Europe IV standard, and discharging and fuel oil consumption all obviously reduce than the 4G19 petrol engine;
(2) petrol engine that provides of the utility model can be used for the mating power of light bus, light duty cross-country car, light-duty notchback, also can be used as the alternate power of similar imported auto, and is practical.
Description of drawings
Fig. 1 is a motor vertical profile structural representation of the present utility model;
Fig. 2 is a cylinder block front-end architecture schematic representation of the present utility model;
Fig. 3 is an A-A cross-sectional view among Fig. 2;
Among the figure: 1-cylinder head, 2-cylinder block, 3-piston, 4-oil pump, 5-camshaft, 6-VVT, 7-oil pump internal rotor, 8-bent axle, 9-bolt.
Embodiment
The utility model is described in further detail by embodiment below in conjunction with accompanying drawing.
Embodiment 1: referring to each accompanying drawing.
The petrol engine of a kind of belt variable valve timing mechanism (VVT) (V19 type petrol engine), form by component such as cylinder block 2, cylinder head 1, piston 3 and connecting rod, camshaft timing mechanism, distribution device, air inlet system and exhaust system, electric control fuel oil jet system, fuel oil supply system, electronic control ignition system, lubrication system, cooling system, starting systems, its structural type is reciprocating piston type, vertical, four-cylinder in upright arrangement, four-stroke, water-cooled, electronic fuel injection formula, cylinder bore is 86 millimeters, and piston stroke is 86 millimeters; Described cylinder block 2 materials are alloy cast iron, and structural type adopts planer-type, no cylinder sleeve structural type, its compact structure, and rigidity and intensity are good, and cylinder block is classified array as, and cylinder core distance is 99 millimeters, 269 millimeters of cylinder body height overalls; Described cylinder head 1 adopts cast aluminium alloy, and the inlet flow area is big, and flow resistance is few, thereby volumetric efficiency increases, pumping loss reduces, and the power per liter of motor and moment of torsion increase, and the firing chamber is a wedge shape, spark plug is in the central position, firing chamber, is convenient to organize gas in the jar to flow the combustion efficiency height; Described piston is a skirt piston 3, the piston skirt is zinc-plated, depth pistion is 70 millimeters, compression height is 35 millimeters, adopts slim piston ring, steel disc formula oil ring, adopts the thin type piston ring merit of can reducing friction, the axial width of piston gas ring groove is 1.5 millimeters, the axial width of oil ring groove is 4 millimeters, and oil ring adopts the steel disc combined type, and wrist pin adopts semi-floating with cooperating of piston pin boss hole and lining of connecting rod small end hole; Described distribution device adopts hydraulic tappet and rocking arm convolution, makes engine operation more reliable; Bent axle 8 adopts high-intensity ductile iron crankshaft, is full support, and eight equilibrium blocks are arranged, and the main journal diameter is 58 millimeters, and the rod journal diameter is 48; Oil supply system adopts electric fuel punp, through fuel filter and oily rail, by oil sprayer fuel oil is sprayed onto in the cylinder cap air flue, and unnecessary fuel oil returns fuel tank through the pressure regulator return tube; Engine aftertreatment system: arrange that under automobile chassis 1 grade of ternary catalyzing unit can make the car load discharging reach Europe III,, and arrange that under automobile chassis 1 main catalytic device can make the car load discharging reach Europe IV at 1 prime catalyst converter of gas exhaust manifold outlet close coupling; Described camshaft timing mechanism is a camshaft Variable Valve Time gear (VVT) 6, is installed in camshaft 5 front ends, makes motor have best valve timing under different operating modes by computer plate (ECU) close-loop control mode; The internal rotor 7 of oil pump 4 is installed on the bent axle 8 preceding end journals, and oil pump 4 is directly driven by bent axle 8, and like this, the driving moment of camshaft reduces, and simultaneously, oil pump capacity increases, and helps the control of VVT.
Compared with prior art, VVT has replaced the camshaft timing mechanism (sprocket wheel or belt pulley) that is assemblied in originally on the petrol engine camshaft, and VVT is fitted on the petrol engine camshaft by bolt 9.When assembling sprocket wheel or belt pulley, relative position between petrol engine camshaft and the bent axle (phase place) is fixed, behind assembling VVT, variation according to gasoline engine lubricating system engine oil pressure, the change of VVT inner rotator and stator generation relative position, realize the variation of camshaft phase, thereby improve the petrol engine port timing, make that petrol engine dynamic property can promote, fuel consume reduction, exhaust emissions reduction.
The utility model is not limited to the foregoing description, and the utility model content is described all can implement and have described good result.
Claims (3)
1, a kind of petrol engine of belt variable valve timing mechanism, by cylinder block, cylinder head, piston and connecting rod, camshaft timing mechanism, distribution device, air inlet system and exhaust system, electric control fuel oil jet system, fuel oil supply system, the electronic control ignition system, lubrication system, cooling system, component such as starting system are formed, its structural type is a reciprocating piston type, in-line arrangement, four-cylinder, four-stroke, water-cooled, the electronic fuel injection formula, described cylinder block adopts planer-type, no cylinder sleeve structural type, described head combustion chamber is a wedge shape, spark plug is in the central position, firing chamber, described distribution device adopts hydraulic tappet and rocking arm convolution, cylinder bore is 86 millimeters, and piston stroke is 86 millimeters; Described piston is the skirt piston, and depth pistion is 70 millimeters, and compression height is 35 millimeters, adopts slim piston ring, steel disc formula oil ring, it is characterized in that: described camshaft timing mechanism is the camshaft Variable Valve Time gear.
2, by the petrol engine of the described belt variable valve timing mechanism of claim 1, it is characterized in that: described camshaft is the side single camshaft, is furnished with 4 intake cams and 4 exhaust cams on the camshaft.
3, by the petrol engine of claim 1 or 2 described belt variable valve timing mechanisms, it is characterized in that: the oil pump internal rotor in the described lubrication system is installed on the crankshaft front end axle journal, and oil pump is directly driven by bent axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202229439U CN201321879Y (en) | 2008-11-26 | 2008-11-26 | Gasoline engine with variable valve timing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202229439U CN201321879Y (en) | 2008-11-26 | 2008-11-26 | Gasoline engine with variable valve timing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201321879Y true CN201321879Y (en) | 2009-10-07 |
Family
ID=41159263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202229439U Expired - Lifetime CN201321879Y (en) | 2008-11-26 | 2008-11-26 | Gasoline engine with variable valve timing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201321879Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256093A (en) * | 2013-04-28 | 2013-08-21 | 重庆小康工业集团股份有限公司 | Combustion engine lubricating system |
| CN103256117A (en) * | 2013-04-28 | 2013-08-21 | 重庆小康工业集团股份有限公司 | Gasoline engine with deviated crankshaft |
-
2008
- 2008-11-26 CN CNU2008202229439U patent/CN201321879Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256093A (en) * | 2013-04-28 | 2013-08-21 | 重庆小康工业集团股份有限公司 | Combustion engine lubricating system |
| CN103256117A (en) * | 2013-04-28 | 2013-08-21 | 重庆小康工业集团股份有限公司 | Gasoline engine with deviated crankshaft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091007 |
|
| CX01 | Expiry of patent term |