CN102011625A - Variable valve timing (VVT) system oil path for engine - Google Patents
Variable valve timing (VVT) system oil path for engine Download PDFInfo
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- CN102011625A CN102011625A CN 201010510440 CN201010510440A CN102011625A CN 102011625 A CN102011625 A CN 102011625A CN 201010510440 CN201010510440 CN 201010510440 CN 201010510440 A CN201010510440 A CN 201010510440A CN 102011625 A CN102011625 A CN 102011625A
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- 239000010729 system oil Substances 0.000 title abstract 2
- 239000003921 oil Substances 0.000 claims abstract description 218
- 239000000446 fuel Substances 0.000 claims description 32
- 239000010721 machine oil Substances 0.000 claims description 23
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 230000002159 abnormal effect Effects 0.000 description 5
- 238000007599 discharging Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 3
- 231100000331 toxic Toxicity 0.000 description 3
- 230000002588 toxic effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
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Abstract
The invention relates to a variable valve timing (VVT) system oil path for an engine. The oil path comprises a VVT oil path, a hydraulic tappet oil path, a camshaft oil path and one-way valves (6), wherein the VVT oil path is formed in the middle of a cylinder cover; the hydraulic tappet oil path and the camshaft oil path are formed on both sides of the cylinder cover; and a plurality of one-way valves (6) are arranged between a VVT oil path inlet on the oil path of the cylinder cover and an oil control valve (OCV) (11) and are opened when a VVT system runs normally and closed when the engine is stopped or runs at an idle speed.
Description
Technical field
The present invention relates to technical field of engines, particularly V-type motor is specifically related to a kind of new work engine VVT system oil-way.
Background technique
Along with developing of automobile industry, more and more higher to the requirement of performance, oil consumption and the discharging of motor.VVT (VariableValve Timing, Variable Valve Time) technology has changed the changeless state of port timing in the conventional engines, best valve timing is provided in the engine operating condition scope, solved the contradiction of power character and Economy under the high rotating speed and the slow-speed of revolution, big load and the little load preferably, the while has been improved toxic emission to a certain extent.
The performance of VVT system is subjected to the influence of VVT oil circuit bigger.The VVT oil feeding line of the motor of existing band VVT technology is comparatively complicated, and OCV (Oil Control Valve, OCV Oil Control Valve) substantially is installed on the side of cylinder cap clutch shaft bearing lid or cylinder cap.Cause the oil feeding line of whole VVT system long complicated like this, the oil circuit trend has repeatedly break-in.The crushing of system increases, and responds variation, has limited the performance of VVT system.In V-type motor, this oil circuit is bigger to the negative effect of VVT systematic function.
Summary of the invention
The object of the present invention is to provide the VVT oil circuit of a kind of new work engine, particularly V-type motor,, improve the performance of VVT system, thereby further improve performance, the reduction oil consumption of motor, improve toxic emission to shorten, to simplify the oil feeding line of VVT system.
For achieving the above object, the present invention has adopted following technological scheme: a kind of new work engine VVT system oil-way, VVT oil circuit directly enter camshaft clutch shaft bearing lid in the middle of the cylinder cap, have realized the shortest of oil circuit and simplification.
In the VVT oil circuit one-way valve is installed, its mounting point is between VVT oil circuit inlet and OCV, and the quantity of one-way valve is identical with the quantity of phase discriminator.Machine oil is gone into oilhole by the annular that one-way valve enters OCV, and the loop by being made up of oil inlet hole or spill port and spill port or oil inlet hole drives phase discriminator work, finally flows into the draining hole, gets back in the oil sump.
As shown from the above technical solution, the VVT system oil-way directly enters camshaft clutch shaft bearing lid in the middle of the cylinder cap among the present invention, VVT oil circuit shorten length, and reduced the break-in of oil circuit.Make the crushing of system reduce, response improves, and has optimized the performance of VVT system.
One-way valve is installed between VVT oil circuit inlet and the OCV, and when engine shutdown or idling, closed check valve makes that the machine oil in the later oil circuit of one-way valve can be retained in the oil duct.Thereby shorten machine oil filling time and machine oil loading in the one-way valve rear oil duct when descending task.So just, shortened the response time of working first after VVT shutdown or the idling, the probability that the hydraulic tappet abnormal sound takes place when also having reduced engine start.
Machine oil flow to cylinder cap main oil gallery place via the cylinder body main oil gallery, flows into air inlet (perhaps exhaust) camshaft bearing journal and hydraulic tappet fuel feeding oil duct, VVT oil circuit inlet, exhaust (perhaps air inlet) camshaft bearing journal fuel feeding oil duct then respectively.The machine oil of described VVT oil circuit ingress, the annular that flows into OCV via one-way valve is gone into oilhole, and by the loop of being made up of oil inlet hole or spill port and spill port or oil inlet hole, the work of driving phase discriminator finally flows into the draining hole, gets back in the oil sump.The VVT oil circuit is arranged in the middle of the cylinder cap, hydraulic tappet oil circuit and camshaft oil circuit are arranged in the cylinder cap both sides, have realized the shortest of VVT oil circuit and simplify most, have improved the performance of VVT system, thereby further improve performance, the reduction oil consumption of motor, improve toxic emission.One-way valve can shorten machine oil filling time and the machine oil loading in the VVT oil circuit when descending task.So just, shortened the response time of working first after VVT shutdown or the idling, the probability that the hydraulic tappet abnormal sound takes place when also having reduced engine start.
Concrete technological scheme is as follows:
A kind of motor VVT system oil-way; comprise the VVT oil circuit; the hydraulic tappet oil circuit, camshaft oil circuit, one-way valve; described VVT oil circuit is arranged in the middle of the cylinder cap; described hydraulic tappet oil circuit and camshaft oil circuit are arranged in the cylinder cap both sides, and described one-way valve is a plurality of, are installed on the oil circuit of cylinder cap between the VVT oil circuit inlet and OCV Oil Control Valve OCV; it is opened when VVT system proper functioning, closes when engine shutdown or idling.
Further, also comprise the cylinder body main oil gallery, it is to motor VVT system oil-way fuel feeding, described VVT oil circuit comprises VVT oil circuit inlet, described hydraulic tappet oil circuit comprises air inlet/exhaust cam shaft neck and hydraulic tappet fuel feeding oil duct, described camshaft oil circuit comprises exhaust/intake cam shaft neck fuel feeding oil duct, and air inlet/exhaust cam shaft neck and hydraulic tappet fuel feeding oil duct are arranged in from the cylinder body main oil gallery more nearby, and exhaust/intake cam shaft neck fuel feeding oil duct is arranged in from the cylinder body main oil gallery at a distance.
Further, also comprise the cylinder cap main oil gallery, described cylinder body main oil gallery connects the cylinder cap main oil gallery and to its fuel feeding, described cylinder cap main oil gallery connects VVT oil circuit inlet respectively, air inlet/exhaust cam shaft neck and hydraulic tappet fuel feeding oil duct, exhaust/intake cam shaft neck fuel feeding oil duct.
Further, also comprise oil inlet hole/spill port, spill port/oil inlet hole and draining hole, VVT oil circuit inlet is by described one-way valve junctor oil control valve OCV, described OCV Oil Control Valve OCV connects the loop that is made of oil inlet hole/spill port and spill port/oil inlet hole, machine oil drives phase discriminator work herein, and is connected to draining hole and oil sump.
Further, described one-way valve be fit into VVT oil circuit inlet on the cylinder cap in oil duct, its number is identical with phase discriminator quantity.
Further, described one-way valve is two, and adopts the interference mount with VVT oil circuit inlet.
Further, described OCV Oil Control Valve OCV is the OCV of medial side face oil-feed, and it is arranged in the cylinder cap front-end face, and adopts seal ring to seal between the timing front cover, and control mode is PID control.
Further, described VVT oil circuit directly enters camshaft clutch shaft bearing lid in the middle of cylinder cap.
Further, the trend of described oil circuit is: the high pressure oil in the cylinder body main oil gallery flows into air inlet/exhaust cam shaft neck and hydraulic tappet fuel feeding oil duct, VVT oil circuit inlet, exhaust/intake cam shaft neck fuel feeding oil duct respectively by the cylinder cap main oil gallery; The machine oil of VVT oil circuit ingress is gone into oilhole by the annular that one-way valve enters OCV, and the loop by being made up of oil inlet hole or spill port and spill port or oil inlet hole drives phase discriminator work, finally flows into the draining hole, gets back in the oil sump.
Further, also comprise the auxiliary hole oil circuit, it adopts plug or steel ball to seal.
Compare the present invention with present prior art:
1, the VVT oil circuit is arranged in the middle of the cylinder cap, and hydraulic tappet oil circuit and camshaft oil circuit are arranged in the cylinder cap both sides, has realized the shortest of VVT oil circuit and simplifies most.
2, two one-way valves are installed on the oil circuit of cylinder cap, the oil consumption of VVT when having reduced engine start, thereby the machine oil filling time when having reduced VVT work have improved the speed of response of VVT system.Make machine oil to arrive quickly in the hydraulic tappet simultaneously, reduced the startup noise of motor.
3, air inlet (perhaps exhaust) camshaft bearing journal and hydraulic tappet fuel feeding oil duct are arranged in from the cylinder body main oil gallery more nearby, and exhaust (perhaps air inlet) camshaft bearing journal fuel feeding oil duct is arranged in from the cylinder body main oil gallery at a distance.Can shorten the oil-filled time of hydraulic tappet, improve the charge oil pressure in the hydraulic tappet oil circuit.Thereby can reduce the probability that the hydraulic tappet abnormal sound takes place.
Description of drawings
Fig. 1 is an oil circuit schematic representation of the present invention;
Embodiment
Describe the present invention with reference to the accompanying drawings below, it is a kind of preferred embodiment in the numerous embodiments of the present invention.
As shown in Figure 1, a kind of new work engine VVT system oil-way, machine oil flow to cylinder cap main oil gallery 2 places via cylinder body main oil gallery 1, flows into air inlet (perhaps exhaust) camshaft bearing journal and hydraulic tappet fuel feeding oil duct 5, VVT oil circuit inlet 4, exhaust (perhaps air inlet) camshaft bearing journal fuel feeding oil duct 7 then respectively.VVT oil circuit inlet 4 is arranged in the middle of the cylinder cap, and one-way valve 6 is installed in the VVT oil circuit, and its mounting point is between VVT oil circuit inlet 4 and OCV11, and the quantity of one-way valve 6 is identical with phase discriminator quantity.
The enter the mouth machine oil at 4 places of described VVT oil circuit is gone into oilhole via the annular that one-way valve 6 flows into OCV11, and by the loop of being made up of oil inlet hole or spill port 8 and spill port or oil inlet hole 9, the work of driving phase discriminator finally flows into draining hole 10, gets back in the oil sump.
In sum, VVT oil circuit inlet 4 is arranged in the middle of the cylinder cap, and air inlet (perhaps exhaust) camshaft bearing journal and hydraulic tappet fuel feeding oil duct 5 and exhaust (perhaps air inlet) camshaft bearing journal fuel feeding oil duct 7 are arranged in the cylinder cap both sides.It is more reasonable that such oil circuit is arranged, the lubricated and hydraulic tappet work of having satisfied each axle journal of camshaft makes the VVT system oil-way obtain maximum optimization again with the demand of oil, and the oil circuit break-in is minimum, and it is the shortest that machine oil enters the distance of phase discriminator.So just, accelerated the oil-filled speed of phase discriminator, phase discriminator inlet oil pressure has improved the speed of response and the working stability of phase discriminator with respect to the pressure drop minimum of main oil gallery oil pressure.Thereby, the phase adjusted of VVT system in time, accurately, engine mildness, performance, oil consumption and discharging be easier to reach the theory target requirement.
Particularly when engine shutdown or idling, one-way valve 6 is closed, and makes that the machine oil in the later oil circuit of one-way valve 6 can be retained in the oil duct.Thereby shorten machine oil filling time and machine oil loading in one-way valve 6 rear oil ducts when descending task.Cooperate the VVT system oil-way after optimizing, shortened the response time of working first after VVT shutdown or the idling, the probability that the hydraulic tappet abnormal sound takes place when also having reduced engine start.
When present embodiment was applied to V-type motor, it was more obvious to the effect that the motor overall performance improves.
As the preferred version of present embodiment,, adopt seal ring to seal between OCV11 and the timing front cover for the chaindriven motor of timing.
As the preferred version of present embodiment, described one-way valve 6 adopts pack into VVT oil circuit on the cylinder cap of interference to enter the mouth in 4 the oil duct.The interference assembly technology is simple, and efficiency of assembling is high and connect reliable.
As the further preferred version of present embodiment, auxiliary hole oil circuit 3 adopts plug to seal.Dismantle when being convenient to keep in repair.
Described air inlet (perhaps exhaust) camshaft bearing journal and hydraulic tappet fuel feeding oil duct 5 are arranged in from cylinder body main oil gallery 1 more nearby, and exhaust (perhaps air inlet) camshaft bearing journal fuel feeding oil duct 7 is arranged in from cylinder body main oil gallery 1 at a distance.Can satisfy the requirement bigger of air inlet (perhaps exhaust) camshaft bearing journal and hydraulic tappet fuel feeding oil duct 5 oil consumption like this than exhaust (perhaps air inlet) camshaft bearing journal fuel feeding oil duct 7.
In sum, engine start particularly during cold-starting, can shorten the oil-filled time of hydraulic tappet, improves the charge oil pressure in the hydraulic tappet oil circuit.Thereby can reduce the probability that the hydraulic tappet abnormal sound takes place.
Present embodiment belongs to technical field of engines, particularly V-type motor.Be specifically related to a kind of new work engine VVT (Variable Valve Timing, Variable Valve Time) system oil-way.The VVT system oil-way directly enters camshaft clutch shaft bearing lid in the present embodiment in the middle of cylinder cap, OCV (Oil Control Valve, OCV Oil Control Valve) is arranged on the cylinder cap front-end face, the shorten length of VVT oil circuit, and reduced the break-in of oil circuit, improved the speed of response and the working stability of phase discriminator.Thereby, the phase adjusted of VVT system in time, accurately, engine mildness, performance, oil consumption and discharging be easier to reach the theory target requirement.
Two one-way valves are installed on the oil circuit of cylinder cap, and the mounting point is between VVT oil circuit inlet and OCV, and is and nearer apart from OCV.This one-way valve is opened when the VVT proper functioning, but closes when engine shutdown or idling.In the time of can making engine shutdown or idling like this, the machine oil that is arranged in the oil circuit after the one-way valve in the VVT oil circuit still is retained in oil circuit and oil pocket, thereby the machine oil filling time when having reduced task under the VVT has been improved the speed of response of VVT system.
Simultaneously, the oil consumption of VVT when above measure has reduced engine start makes machine oil to arrive quickly in the hydraulic tappet, has reduced the startup noise of motor.
In conjunction with the accompanying drawings the present invention has been carried out exemplary description above; obviously specific implementation of the present invention is not subjected to the restriction of aforesaid way; as long as the various improvement of having adopted method design of the present invention and technological scheme to carry out; or directly apply to other occasion without improvement, all within protection scope of the present invention.
Claims (10)
1. motor VVT system oil-way; it is characterized in that, comprise the VVT oil circuit, the hydraulic tappet oil circuit; the camshaft oil circuit; one-way valve (6), described VVT oil circuit is arranged in the middle of the cylinder cap, and described hydraulic tappet oil circuit and camshaft oil circuit are arranged in the cylinder cap both sides; described one-way valve (6) is a plurality of; be installed on the oil circuit of cylinder cap between the VVT oil circuit inlet (4) and OCV Oil Control Valve OCV (11), it is opened when VVT system proper functioning, closes when engine shutdown or idling.
2. motor VVT system oil-way as claimed in claim 1, it is characterized in that, also comprise cylinder body main oil gallery (1), it is to motor VVT system oil-way fuel feeding, described VVT oil circuit comprises VVT oil circuit inlet (4), described hydraulic tappet oil circuit comprises air inlet/exhaust cam shaft neck and hydraulic tappet fuel feeding oil duct (5), described camshaft oil circuit comprises exhaust/intake cam shaft neck fuel feeding oil duct (7), air inlet/exhaust cam shaft neck and hydraulic tappet fuel feeding oil duct (5) are arranged in from cylinder body main oil gallery (1) more nearby, and exhaust/intake cam shaft neck fuel feeding oil duct (7) is arranged in from cylinder body main oil gallery (1) at a distance.
3. motor VVT system oil-way as claimed in claim 1 or 2, it is characterized in that, also comprise cylinder cap main oil gallery (2), described cylinder body main oil gallery (1) connects cylinder cap main oil gallery (2) and to its fuel feeding, described cylinder cap main oil gallery (2) connects VVT oil circuit inlet (4) respectively, air inlet/exhaust cam shaft neck and hydraulic tappet fuel feeding oil duct (5), exhaust/intake cam shaft neck fuel feeding oil duct (7).
4. as each described motor VVT system oil-way among the claim 1-3, it is characterized in that, also comprise oil inlet hole/spill port (8), spill port/oil inlet hole (9) and draining hole (10), VVT oil circuit inlet (4) is by described one-way valve (6) junctor oil control valve OCV (11), described OCV Oil Control Valve OCV (11) connects the loop that is made of oil inlet hole/spill port (8) and spill port/oil inlet hole (9), machine oil drives phase discriminator work herein, and is connected to draining hole (10) and oil sump.
5. as each described motor VVT system oil-way among the claim 1-4, it is characterized in that, described one-way valve (6) be fit into VVT oil circuit inlet (4) on the cylinder cap in oil duct, its number is identical with phase discriminator quantity.
6. motor VVT system oil-way as claimed in claim 5 is characterized in that described one-way valve (6) is two, and adopts the interference mount with VVT oil circuit inlet (4).
7. as each described motor VVT system oil-way among the claim 1-6, it is characterized in that described OCV Oil Control Valve OCV (11) is the OCV of medial side face oil-feed, it is arranged in the cylinder cap front-end face, and adopt seal ring to seal between the timing front cover, control mode is PID control.
8. as each described motor VVT system oil-way among the claim 1-7, it is characterized in that described VVT oil circuit directly enters camshaft clutch shaft bearing lid in the middle of cylinder cap.
9. motor VVT system oil-way as claimed in claim 8, it is characterized in that, the trend of described oil circuit is: the high pressure oil in the cylinder body main oil gallery (1) flows into air inlet/exhaust cam shaft neck and hydraulic tappet fuel feeding oil duct (5), VVT oil circuit inlet (4), exhaust/intake cam shaft neck fuel feeding oil duct (7) respectively by cylinder cap main oil gallery (2); The machine oil that VVT oil circuit inlet (4) is located is gone into oilhole by the annular that one-way valve (6) enters OCV (11), by the loop of forming by oil inlet hole or spill port (8) and spill port or oil inlet hole (9), the work of driving phase discriminator finally flows into draining hole (10), gets back in the oil sump.
10. as each described motor VVT system oil-way among the claim 1-9, it is characterized in that also comprise auxiliary hole oil circuit (3), it adopts plug or steel ball to seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010510440 CN102011625A (en) | 2010-10-15 | 2010-10-15 | Variable valve timing (VVT) system oil path for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010510440 CN102011625A (en) | 2010-10-15 | 2010-10-15 | Variable valve timing (VVT) system oil path for engine |
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|---|---|
| CN102011625A true CN102011625A (en) | 2011-04-13 |
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| CN 201010510440 Pending CN102011625A (en) | 2010-10-15 | 2010-10-15 | Variable valve timing (VVT) system oil path for engine |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182793A (en) * | 2007-12-04 | 2008-05-21 | 奇瑞汽车有限公司 | VVT engine oil gallery |
| CN101718231A (en) * | 2009-11-27 | 2010-06-02 | 重庆长安汽车股份有限公司 | Lubrication oil path for cylinder cover of engine |
| CN201546777U (en) * | 2009-10-14 | 2010-08-11 | 奇瑞汽车股份有限公司 | Novel engine VVT oil path structure |
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2010
- 2010-10-15 CN CN 201010510440 patent/CN102011625A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182793A (en) * | 2007-12-04 | 2008-05-21 | 奇瑞汽车有限公司 | VVT engine oil gallery |
| CN201546777U (en) * | 2009-10-14 | 2010-08-11 | 奇瑞汽车股份有限公司 | Novel engine VVT oil path structure |
| CN101718231A (en) * | 2009-11-27 | 2010-06-02 | 重庆长安汽车股份有限公司 | Lubrication oil path for cylinder cover of engine |
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Application publication date: 20110413 |