CN108049926A - Camshaft structure and its manufacture assembly method, the method for reducing engine consumption - Google Patents
Camshaft structure and its manufacture assembly method, the method for reducing engine consumption Download PDFInfo
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- CN108049926A CN108049926A CN201711059924.9A CN201711059924A CN108049926A CN 108049926 A CN108049926 A CN 108049926A CN 201711059924 A CN201711059924 A CN 201711059924A CN 108049926 A CN108049926 A CN 108049926A
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- China
- Prior art keywords
- axis body
- engine
- cam
- camshaft structure
- camshaft
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
- F01P5/12—Pump-driving arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/04—Feeding by means of driven pumps
- F02M37/06—Feeding by means of driven pumps mechanically driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
- F01L2001/0471—Assembled camshafts
- F01L2001/0473—Composite camshafts, e.g. with cams or cam sleeve being able to move relative to the inner camshaft or a cam adjusting rod
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
- F01L2001/0476—Camshaft bearings
Abstract
The present invention provides a kind of camshaft structure and its manufacture assembly method, the methods for reducing engine consumption, are related to cam crank.The camshaft structure includes：Axis body has the cavity set axially along, the weight of the engine is reduced by the cavity, to reduce the vehicle oil consumption；And multiple cams, it is sequentially fixed at the axis body along the axial direction of the axis body, multiple cams are used to control valve opening and/or the closing of the engine.For the camshaft of the application, axis body has the cavity set axially along.The weight of the engine is reduced by the cavity, to reduce the vehicle oil consumption.Further, the axis body is equipped with the rolling bearing with rolling element, the friction when camshaft structure rotates is reduced by the rolling bearing, to reduce the oil consumption of the engine.
Description
Technical field
The present invention relates to cam cranks, more particularly to a kind of camshaft structure and its manufacture assembly method, reduce and start
The method of engine oil consumption.
Background technology
As environmental pollution constantly aggravates and environmental consciousness deepens constantly so that each side pollutant is arranged by country
The requirement put is more and more stringenter.On the other hand, with the continuous improvement of people's living standards, so that the popularity rate of vehicle is also more next
It is higher.In order to have both environmental protection simultaneously and improve people's living standard so that country is stringenter to the oil consumption requirement of vehicle.
In order to reduce the oil consumption of vehicle, major automobile manufacturing company finds out various methods one after another, for example, using mixed
Close power source driving vehicle；Either the overall structure of vehicle is improved or the structure by improving engine, still
The fuel oil oil consumption of vehicle is still very high.
In addition, during vehicle is continuously improved towards energy conservation and environmental protection direction, the corresponding mode that fabricates is of high cost,
The energy conservation and environmental protection for being so also unfavorable for vehicle is improved.
The content of the invention
It is an object of the present invention to provide a kind of camshaft structure for engine, by the weight for reducing camshaft
Amount, makes vehicle lightweight, to reduce the oil consumption of vehicle.
The present invention one is further objective is that will be by reducing the friction during cam axle, to reduce vehicle
Oil consumption.
The present invention another further objective is that by simplify camshaft manufacture assembling process, with reduce engine and
The production cost of vehicle.
Particularly, the present invention provides a kind of camshaft structure for engine, the engine is used to drive vehicle,
The camshaft structure includes：
Axis body has the cavity set axially along, and the weight of the engine is reduced by the cavity, to reduce
The vehicle oil consumption；And
Multiple cams are sequentially fixed on along the axial direction of the axis body at the axis body, and multiple cams are used to control
The valve opening of the engine and/or closing.
Further, the axis body and multiple cams are the individual member being separated from each other, and the axis body is hollow pipe
Shape part, the cavity are the hollow part of the axis body；
Each cam has a first through hole, the axis body through the cam the first through hole so that institute
Cam is stated to be kept fixed with the axis body；
Preferably, it is engaged by the first through hole with the axis body, enables the cam along the axis body
It moves axially and is fixed at any given position of the axis body；
Preferably, being engaged by the first through hole with the axis body enables the relatively described axis body of the cam to turn
It is dynamic, so that any one in multiple cams compared with cam rotation other described and can be fixed on any position
Place；
Preferably, the lateral wall of the axis body is fixed with multiple keys, each key along the axial arranged of the axis body,
The side wall of the first through hole of the cam offers the keyway being connected to each other with the key, passes through the keyway and the key phase
Cooperation, the cam to be prevented to be rotated compared with the axis body；
Preferably, it is engaged by the keyway with the key, the cam is enable to be moved along the axial direction of the axis body
It moves and is fixed at any given position；
Preferably, the cam is mutually fixed by press-fit approach and the axis body；
Preferably, the axis body is steel cylindrical tube；
Preferably, the axis body replaces with solid shafting.
Further, one in multiple cams is cam of injection pump, and the cam of injection pump is used to drive described start
The high-pressure oil pump of machine makes the high-pressure oil pump that quantitative fuel oil is pumped into the corresponding oily rail of the engine；
Preferably, the cam of injection pump is installed on the at one end of the axis body；
Preferably, the cam of injection pump is fixed on by press-fit approach at the axis body.
Further, the camshaft structure also has signal panels, and the signal panels are used to detect the camshaft structure
Phase；The signal panels offer the second through hole, are engaged by second through hole with the axis body, make the signal panels
Can along the axis body axial movement and be fixed at any given position of the axis body；
Preferably, the signal panels are installed at the other end of the axis body；
Preferably, the signal panels are fixed on by press-fit approach at the axis body.
Further, the axis body is equipped with the rolling bearing with rolling element, by described in rolling bearing reduction
Friction when camshaft structure rotates, to reduce the oil consumption of the engine；
Preferably, the rolling bearing is ball bearing；
Preferably, the rolling bearing is roller bearing；
Preferably, the rolling bearing is installed on the end of the axis body.
Further, for the cavity along the axis body axially through setting, the both ends of the axis body pass through respectively
First, the second plug closes the cavity；
VVT installation axle journals, the VVT phases that the VVT installations axle journal has with the vehicle are installed at second plug
Cooperation；
Preferably, the axis body is steel cylindrical tube；
Preferably, the camshaft structure has rolling bearing, and the rolling bearing is installed at second plug；
Preferably, the rolling bearing is fixed on by press-fit approach at second plug；
Preferably, the rolling ball bearing is interference fitted with second plug.
Further, the VVT installation axle journals are coaxially disposed with the axis body, and the outer end of the VVT installations axle journal is fixed
There is a positioning pin, the positioning pin is used for the VVT and camshaft structure assembling positioning, and the positioning pin is along the axis
The axial direction of body and its non-coaxial setting；
Preferably, oil groove is offered at second plug, the oil groove shifts to an earlier date oil groove and VVT hysteresis oil grooves including VVT,
The oil of the lubricating oil pump of the engine shifts to an earlier date oil groove by the VVT and the VVT lags oil groove and enters in the VVT, with control
It makes the camshaft structure phase to adjust to direction in advance and hysteresis direction, the VVT shifts to an earlier date oil groove and VVT hysteresis oil grooves
Axis annularly around the axis body is opened at the lateral wall of second plug；
Preferably, second plug offers seal groove, and is equipped with and the matched sealing ring of the seal groove, institute
The axis that seal groove is stated around the axis body is set, and is engaged by the seal groove with the sealing ring, to prevent the hair
Oil leakage in oil cylinder housing and cylinder cap sealing oil groove that motivation has；
Preferably, the seal groove has multiple, and the oil groove has multiple, the seal groove and the oil groove successively edge
The axial direction for the axis body alternates arrangement.
Further,
The rectangular-shaped groove body of rectangular cross-section is offered at first plug, by the rectangular-shaped groove body with it is corresponding
Square key coordinates, and the rectangular-shaped groove body is made to drive the belt wheel of the water pump of the engine, and the belt wheel is driven by corresponding belt
The water pump is moved to supply water for the engine；
Wherein, the belt wheel of the water pump of the engine is the belt wheel of the water pump with drive key of the engine；
Preferably, an end of first plug and the axis body passes through interference press-fit；
Preferably, the VVT is engine variable-valve timing.
In addition, present invention also provides a kind of manufacture assembly method of camshaft structure, this method includes：
Multiple cams are opened up into first through hole respectively；
It will be with forming cavity in the matched axis body of the cam；
The axis body is inserted into the first through hole of multiple cams；
Adjust the position of the relatively described axis body of the cam；
Or/and it is adjusted up each position compared with cam other described in multiple cams in the axis of the axis body
It puts and angle；
Multiple cams are fixed on to the specified location of the axis body；
Preferably, the cavity along the axis body axially through setting；
Preferably, being included at least in multiple cams has cam of injection pump；
Preferably, multiple cams are mutually fixed with the axis body by press-fit approach.
In addition, present invention also provides a kind of method for reducing engine consumption, this method includes：
The engine has camshaft structure and is installed on vehicle, has in the axis body by making the camshaft structure
Cavity reduces the weight of the camshaft structure, to reduce the vehicle oil consumption；
Preferably, the engine at least have with the matched rolling bearing of the camshaft structure, pass through less institute
Friction when camshaft structure rotates is stated, to reduce the vehicle oil consumption；
Preferably, the rolling bearing has rolling element, and the rolling element is sphere or roller.
The technique effect of the application：
For the camshaft of the application, axis body has the cavity set axially along.Institute is reduced by the cavity
The weight of engine is stated, to reduce the vehicle oil consumption.
Further, the axis body is equipped with the rolling bearing with rolling element, by described in rolling bearing reduction
Friction when camshaft structure rotates, to reduce the oil consumption of the engine.
Since the cam of the application is separated from each other with axis body, this allows for axis body and cam can be with separate machined, this
Sample is compared with the camshaft structure of engine of monoblock type, manufacture easy to process.Moreover, in this case, the in vivo cavity of axis
Can be the cavity of perforation or the through hole of perforation, and it will be appreciated by persons skilled in the art that for the axis in axis
To processing through hole and very conventional processing method, processing request can be reached using common process equipment.Compared to it
Under, integral cam axis of the prior art is usually that either forging molding is all reality using cast iron or ductile iron material for casting
Core structure, quality is big, can not realize loss of weight, can drill loss of weight using the structure of loss of weight as in solid axis at present, due to camshaft
For length (three cylinders) about in 400mm length, the cam shaft length of four-cylinder and six-in-line machine is longer, and the drilling of its axis body is needed very
Long cutter could be completed, processed complex.Therefore, the cam of the application passes through the first through hole that it has and axis body lateral wall phase
Fixed mode processes camshaft, more fast.
In addition, the assembling for camshaft within the engine, since engine interior is complicated, various mechanisms are various,
Such as chain drive part, V belt translation part and piston piece.Camshaft at least needs to dock with these components.And cam of the prior art
Axis has often prepared, and cam cannot rotate or mobile relative to its axis body, is so not easy to very much to camshaft into luggage
Match somebody with somebody, it is time-consuming and laborious so as to cause the assembly work of engine so that the production cost of vehicle increases substantially.And in the application
In, it solves the problems, such as this just, is engaged by the first through hole with the axis body, enable the cam along described
The axial movement of axis body is simultaneously fixed at any given position of the axis body.Then cam is mutually fixed with axis body again, so
It can be by adjusting position of the cam compared with other mechanisms in engine, installation to be avoided to interfere.Meanwhile pass through described first
Through hole is engaged with the axis body enables the cam to be rotated relative to the axis body, so that any in multiple cams
One compared with cam rotation other described and can be fixed on any position.The actual feelings that can be assembled according to camshaft
Condition, to adjust the relative position between multiple cams in axis body axial direction so that the order of camshaft and corresponding multiple valves
The cooperation of opening and closing is more coherent complete.So as to improve the operational efficiency of engine.
In addition, the axis body is steel cylindrical tube, and steel cylindrical tube had not only facilitated buying, but also was convenient to manufacturers of engines
Self design.So as to further reduce the production cost of engine.
It should be noted that coordinating this mode by first through hole and axis body, not only it is suitable for the axis body with cavity,
Solid axis body is also suitable for, in other words, the equipment adjustment mode of aforementioned cam and axis body, suitable for various types of convex
Wheel shaft.
Finally, due to which the axis body is hollow tubular part, the axis body can be separated from each other with multiple cams
Individual member, this is allowed for, and the component of other functions can be installed on axis body according to the actual needs of engine, in this way, can
By axis body and respective cams and the different erection methods of other components, to expand the use function of camshaft, and then to improve
The performance of engine.
According to the accompanying drawings to the detailed description of the specific embodiment of the invention, those skilled in the art will be brighter
The above and other objects, advantages and features of the present invention.
Description of the drawings
Some specific embodiments of detailed description of the present invention by way of example, and not by way of limitation with reference to the accompanying drawings hereinafter.
Identical reference numeral denotes same or similar component or part in attached drawing.It should be appreciated by those skilled in the art that these
What attached drawing was not necessarily drawn to scale.In attached drawing：
Fig. 1 is the perspective schematic view of the disassembled form of the critical piece of camshaft structure of the present invention；
Fig. 2 is the schematic sectional front view of the first plug；；
Fig. 3 is the schematic right-side view of Fig. 2；
Fig. 4 is the schematic elevational view along the axial cutting of the camshaft structure；
Fig. 5 is the schematic elevational view of the camshaft structure；
Fig. 6 is the flow diagram of the manufacture assembly method of camshaft structure；
The reference numeral in each figure is above：
1 axis body, 11 cavitys, 2 cams, 21 first through hole, 22 cam of injection pump, 23 signal panels, 24 second through holes, 3 axis of rolling
It holds, 41 first plugs, 411 rectangular-shaped groove bodies, 42 second plugs, 421 oil grooves, 422 seal grooves, 423 sealing rings, 51 positioning pins.
Specific embodiment
Fig. 1 is the perspective schematic view of the disassembled form of the critical piece of camshaft structure of the present invention；Referring to Fig. 1,
This application provides a kind of camshaft structure for engine, for driving vehicle, camshaft structure includes engine：Axis body
1 and multiple cams 2.Axis body 1 has the cavity 11 set axially along.The weight of engine is reduced by cavity 11, with
Reduce vehicle oil consumption.Multiple cams 2 are sequentially fixed on along the axial direction of axis body 1 at axis body 1.Multiple cams 2 start for controlling
The valve opening of machine and/or closing.
Fig. 4 is the schematic elevational view along the axial cutting of the camshaft structure；Referring also to Fig. 1 and Fig. 4, and with
It is described based on Fig. 4, further, axis body 1 is hollow tubular part, and axis body 1 and multiple cams 2 are the independent structure that can be separated from each other
Part, cavity 11 are the hollow part of axis body 1.Each cam 2 has first through hole 21, and axis body 1 is through the first through hole of cam 2
21, so that cam 2 is kept fixed with axis body 1.
Preferably, it is engaged, enable cam 2 along the axial movement of axis body 1 and is consolidated with axis body 1 by first through hole 21
At any given position of axis body 1.
Preferably, being engaged by first through hole 21 with axis body 1 enables cam 2 to be rotated relative to axis body 1, so that multiple
Any one in cam 2 can rotate compared with other cams 2 and be fixed on any position.
Preferably, the lateral wall of axis body 1 is fixed with multiple keys (attached drawing is not shown), axial cloth of each key along axis body 1
It puts, the side wall of the first through hole 21 of cam 2 offers the keyway (attached drawing is not shown) being connected to each other with key, is matched by keyway and key
It closes, cam 2 to be prevented to be rotated compared with axis body 1.
Preferably, it is engaged, enable cam 2 along the axial movement of axis body 1 and is fixed on arbitrary with key by keyway
Specified location；
Preferably, cam 2 is fixed by press-fit approach and 1 phase of axis body；
Preferably, axis body 1 is steel cylindrical tube；
Preferably, axis body 1 replaces with solid shafting.
Since the cam 2 of the application is separated from each other with axis body 1, this, which allows for axis body 1 and cam 2, can separate and add
Work, so compared with the camshaft structure of engine of monoblock type, manufacture easy to process.Moreover, in this case, in axis body 1
Cavity 11 can be perforation cavity, can also make the through hole of perforation, and it will be appreciated by persons skilled in the art that for
In the axial processing through hole of axis and very conventional processing method, processing request can be reached using common process equipment.
In contrast, 2 axis of integral cam of the prior art be usually cast either forging molding using cast iron or magnesium iron material
Material, is all solid construction, and quality is big, can not realize loss of weight, can be using the structure of loss of weight at present in solid axis drilling loss of weight, by
In 2 shaft length of cam (three cylinders) about in 400mm length, 2 shaft length of cam of four-cylinder and six-in-line machine is longer, to its axis body
1 drilling needs the cutter grown very much that could complete, processed complex.Therefore, the first through hole 21 that the cam 2 of the application has by it
2 axis of cam is processed with the mutually fixed mode of 1 lateral wall of axis body, more fast.
In addition, the assembling for 2 axis of cam within the engine, since engine interior is complicated, various mechanisms are various,
Such as chain drive part, V belt translation part and piston piece.2 axis of cam at least needs to dock with these components.It is and of the prior art convex
It takes turns 2 axis often to have prepared, cam 2 cannot be rotated or moved relative to its axis body 1, be so not easy to very much to 2 axis of cam
It is assembled, it is time-consuming and laborious so as to cause the assembly work of engine so that the production cost of vehicle increases substantially.And at this
It in application, solves the problems, such as this just, is engaged by first through hole 21 with axis body 1, enables cam 2 along axis body 1
It moves axially and is fixed at any given position of axis body 1.Then cam 2 and 1 phase of axis body are fixed again, can so passed through
Position of the cam 2 compared with other mechanisms in engine is adjusted, installation to be avoided to interfere.Meanwhile pass through first through hole 21 and axis
Body 1, which is engaged, enables cam 2 to be rotated relative to axis body 1, so that any one in multiple cams 2 can be convex compared with other
Wheel 2 rotates and is fixed on any position.The actual conditions that can be assembled according to 2 axis of cam, come adjust between multiple cams 2
Relative position in 1 axial direction of axis body so that 2 axis of cam more connects with the cooperation that the order of corresponding multiple valves opens and closes
It passes through complete.So as to improve the operational efficiency of engine.
In addition, axis body 1 is steel cylindrical tube, and steel cylindrical tube had not only facilitated buying, but also was convenient to manufacturers of engines certainly
Row manufactures and designs.So as to further reduce the production cost of engine.
It should be noted that coordinating this mode by first through hole 21 and axis body 1, not only it is suitable for that there is cavity 11
Axis body 1 is also suitable for solid axis body 1, in other words, the equipment adjustment mode of aforementioned cam 2 and axis body 1, suitable for it is various not
2 axis of cam of same type.
Finally, due to which axis body 1 is hollow tubular part, axis body 1 is the individual member that can be separated from each other with multiple cams 2,
This is allowed for, and can install the component of other functions on axis body 1 according to the actual needs of engine, in this way, can pass through axis
Body 1 and respective cams 2 and the different erection methods of other components to expand the use function of 2 axis of cam, and then improve engine
Performance.
Referring to Fig. 1 and Fig. 4, further, one in multiple cams 2 is cam of injection pump 22, and cam of injection pump 22 is used to control
Start or stop to provide high pressure oil in engine processed；So that cam of injection pump 22 can be along the axial movement of axis body 1 in corresponding
Position at.
Cam of injection pump 22 is used to drive the high-pressure oil pump of engine, makes the high-pressure oil pump that quantitative fuel oil is pumped into institute
In the corresponding oily rail for stating engine；
Preferably, cam of injection pump 22 is installed on the at one end of axis body 1；
Preferably, cam of injection pump 22 is fixed on by press-fit approach at axis body 1.
Referring to Fig. 1, further, camshaft structure also has signal panels 23, and signal panels 23 are used to detect camshaft structure
Phase；Signal panels 23 offer the second through hole 24, are engaged by the second through hole 24 with axis body 1, enable 23 edge of signal panels
It the axial movement of axis body 1 and is fixed at any given position of axis body 1.
Preferably, signal panels 23 are installed at the other end of axis body 1；
Preferably, signal panels 23 are fixed on by press-fit approach at axis body 1.
Referring to Fig. 1, further, axis body 1 is equipped with the rolling bearing 3 with rolling element, is reduced by rolling bearing 3 convex
Friction when wheel shaft structure rotates, to reduce the oil consumption of engine；
Preferably, rolling bearing 3 is ball bearing；
Preferably, rolling bearing 3 is roller bearing (attached drawing is not shown)；
Preferably, rolling bearing 3 is installed on the end of axis body 1.
Referring to Fig. 1, further, for cavity 11 along axis body 1 axially through setting, the both ends of axis body 1 pass through respectively
First, the second plug 41,42 closed cavities 11；
VVT installation axle journals 5 are installed, VVT installation axle journals 5 are engaged with the VVT that vehicle has at second plug 42；
Preferably, axis body 1 is steel cylindrical tube；
Preferably, camshaft structure has rolling bearing 3, and rolling bearing 3 is installed at the second plug 42；
Preferably, rolling bearing 3 is fixed on by press-fit approach at the second plug 42；
Preferably, rolling ball bearing is interference fitted with the second plug 42.
Fig. 5 is the schematic elevational view of the camshaft structure；Referring also to Fig. 1 and Fig. 5, further, VVT installation axles
Neck 5 is coaxially disposed with axis body 1, and the outer end of VVT installation axle journals 5 is fixed with positioning pin 51, and positioning pin 51 is used for VVT and camshaft
Standard positions, axial direction and its non-coaxial setting of the positioning pin 51 along axis body 1；
Preferably, oil groove 421 is offered at the second plug 42, oil groove 421 shifts to an earlier date oil groove and VVT hysteresis oil grooves including VVT,
The oil of the lubricating oil pump of engine shifts to an earlier date oil groove by VVT and VVT lags oil groove and enters in VVT, to control camshaft structure phase
It is adjusted to direction in advance and hysteresis direction, VVT shifts to an earlier date the axis of oil groove and VVT hysteresis oil grooves annularly around axis body 1 and opens up
At the lateral wall of the second plug 42；
Preferably, the second plug 42 offers seal groove 422, and is equipped with and 422 matched sealing ring of seal groove
423, seal groove 422 is set around the axis of axis body 1, is engaged by seal groove 422 with sealing ring 423, to prevent engine
Oil leakage in the oil cylinder housing and cylinder cap sealing oil groove 421 that have；
Preferably, seal groove 422 has multiple, and oil groove 421 has multiple, and seal groove 422 and oil groove 421 are successively along axis
The axial direction of body 1 alternates arrangement.
Fig. 2 is the schematic sectional front view of the first plug；Fig. 3 is the schematic right-side view of Fig. 2；Referring to Fig. 2 and Fig. 3,
Further, the rectangular-shaped groove body 411 of rectangular cross-section is offered at the first plug 41, passes through rectangular-shaped groove body and corresponding square
Shape key coordinates, and makes the belt wheel of the water pump of rectangular-shaped groove body driving engine, it is engine that belt wheel drives water pump by corresponding belt
It supplies water；
Wherein, the belt wheel of the water pump of engine is the belt wheel of the water pump with drive key of engine；
Preferably, an end of the first plug 41 and axis body 1 passes through interference press-fit；
Preferably, VVT is engine variable-valve timing.
Fig. 6 is the flow diagram of the manufacture assembly method of camshaft structure；Referring to Fig. 6, in addition, present invention also provides
A kind of manufacture assembly method of camshaft structure, including
Multiple cams 2 are opened up first through hole 21 by S100 (steps 1) respectively；
S200 (steps 2), will with 2 matched axis body 1 of cam in formed cavity 11；
Axis body 1 is inserted into the first through hole 21 of multiple cams 2 by S300 (steps 3)；
S400 (steps 4) adjust position of the cam 2 with respect to axis body 1；
S500 (steps 5) or/and axis body 1 axis be adjusted up it is each compared with other cams 2 in multiple cams 2
Position and angle；
S600 (steps 6), the specified location that multiple cams 2 are fixed on to axis body 1.
Preferably, cavity 11 along axis body 1 axially through setting；
Preferably, being included at least in multiple cams 2 has cam of injection pump 22；
Preferably, multiple cams 2 are mutually fixed with axis body 1 by press-fit approach.
In addition, present invention also provides a kind of method for reducing engine consumption, this method includes (attached drawing is not shown)：
Engine has camshaft structure and is installed on vehicle, has cavity 11 in the axis body 1 by making camshaft structure
The weight of camshaft structure is reduced, to reduce vehicle oil consumption；
Preferably, engine at least has rolling bearing 3 matched with camshaft structure, passes through less camshaft structure
Friction during rotation, to reduce vehicle oil consumption；
Preferably, rolling bearing 3 has rolling element, and rolling element is sphere or roller.
So far, although those skilled in the art will appreciate that detailed herein have shown and described multiple showing for the present invention
Example property embodiment, still, without departing from the spirit and scope of the present invention, still can according to the present disclosure directly
Determine or derive many other variations or modifications consistent with the principles of the invention.Therefore, the scope of the present invention is understood that and recognizes
It is set to and covers other all these variations or modifications.
Claims (10)
1. a kind of camshaft structure for engine, which is characterized in that the engine is used to drive vehicle, the camshaft
Structure includes：
Axis body has the cavity set axially along, the weight of the engine is reduced by the cavity, with described in reduction
Vehicle oil consumption；And
Multiple cams are sequentially fixed on along the axial direction of the axis body at the axis body, and multiple cams are described for controlling
The valve opening of engine and/or closing.
2. camshaft structure according to claim 1, which is characterized in that the axis body is mutual point with multiple cams
From individual member, the axis body be hollow tubular part, the cavity be the axis body hollow part；
Each cam has a first through hole, the axis body through the cam the first through hole so that described convex
Wheel is kept fixed with the axis body.
3. camshaft structure according to claim 2, which is characterized in that one in multiple cams is convex for oil pump
Wheel, the cam of injection pump are used to drive the high-pressure oil pump of the engine, the high-pressure oil pump are made to be pumped into quantitative fuel oil
In the corresponding oily rail of the engine.
4. camshaft structure according to claim 2, which is characterized in that the camshaft structure also has signal panels, institute
Signal panels are stated for detecting the phase of the camshaft structure；The signal panels offer the second through hole, logical by described second
Hole is engaged with the axis body, is enable the signal panels along the axial movement of the axis body and is fixed on appointing for the axis body
Meaning specified location.
5. camshaft structure according to claim 2, which is characterized in that the axis body is equipped with the rolling with rolling element
Bearing reduces the friction when camshaft structure rotates, to reduce the oil consumption of the engine by the rolling bearing.
6. camshaft structure according to any one of claim 1 to 5, which is characterized in that the cavity is along the axis
Body axially through setting, the both ends of the axis body pass through first, second plug and close the cavity respectively；
VVT installation axle journals are installed, the VVT installations axle journal is engaged with the VVT that the vehicle has at second plug.
7. camshaft structure according to claim 6, which is characterized in that the VVT installation axle journals and the axis body are coaxial
It sets, the outer end of the VVT installations axle journal is fixed with positioning pin, and the positioning pin is used for the VVT and the camshaft knot
Structure assembling positioning, axial direction and its non-coaxial setting of the positioning pin along the axis body.
8. camshaft structure according to claim 6, which is characterized in that
The rectangular-shaped groove body of rectangular cross-section is offered at first plug, passes through the rectangular-shaped groove body and corresponding rectangle
Key coordinates, and the rectangular-shaped groove body is made to drive the belt wheel of the water pump of the engine, and the belt wheel drives institute by corresponding belt
Water pump is stated to supply water for the engine；
Wherein, the belt wheel of the water pump of the engine is the belt wheel of the water pump with drive key of the engine.
9. the manufacture assembly method of a kind of camshaft structure, which is characterized in that this method includes：
Multiple cams are opened up into first through hole respectively；
It will be with forming cavity in the matched axis body of the cam；
The axis body is inserted into the first through hole of multiple cams；
Adjust the position of the relatively described axis body of the cam；
Or/and it is adjusted up position of each cam in multiple cams compared with cam other described in the axis of the axis body
It puts and angle；
Multiple cams are fixed on to the specified location of the axis body.
A kind of 10. method for reducing engine consumption, which is characterized in that this method includes：
The engine has camshaft structure and is installed on vehicle, has cavity in the axis body by making the camshaft structure
The weight of the camshaft structure is reduced, to reduce the vehicle oil consumption.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711059924.9A CN108049926A (en) | 2017-11-01 | 2017-11-01 | Camshaft structure and its manufacture assembly method, the method for reducing engine consumption |
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| CN201711059924.9A CN108049926A (en) | 2017-11-01 | 2017-11-01 | Camshaft structure and its manufacture assembly method, the method for reducing engine consumption |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113874604A (en) * | 2019-06-05 | 2021-12-31 | 舍弗勒技术股份两合公司 | Camshaft adjuster with contact surface for a camshaft and method for assembling the same |
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| CN202991159U (en) * | 2012-11-30 | 2013-06-12 | 长城汽车股份有限公司 | Multifunction assembled camshaft |
| CN104295332A (en) * | 2013-07-16 | 2015-01-21 | 重庆长安汽车股份有限公司 | Combination type cam shaft with VVT oil way |
| CN204186442U (en) * | 2014-10-29 | 2015-03-04 | 阿尔特汽车技术股份有限公司 | Camshaft lubrication oil channel structures |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020073945A1 (en) * | 2000-12-19 | 2002-06-20 | Thomas Majewski | Camshaft for decreased weight and added wear resistance of lobe area |
| US20090137327A1 (en) * | 2007-11-27 | 2009-05-28 | Jtekt Corporation | Shaft apparatus with bearing |
| CN202467950U (en) * | 2012-02-29 | 2012-10-03 | 江铃汽车股份有限公司 | Assembled camshaft |
| CN202991159U (en) * | 2012-11-30 | 2013-06-12 | 长城汽车股份有限公司 | Multifunction assembled camshaft |
| CN104295332A (en) * | 2013-07-16 | 2015-01-21 | 重庆长安汽车股份有限公司 | Combination type cam shaft with VVT oil way |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113874604A (en) * | 2019-06-05 | 2021-12-31 | 舍弗勒技术股份两合公司 | Camshaft adjuster with contact surface for a camshaft and method for assembling the same |
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