CN107795375A - The diesel engine double-layered tooth train of high-pressure oil pump rotating speed switching can be achieved - Google Patents
The diesel engine double-layered tooth train of high-pressure oil pump rotating speed switching can be achieved Download PDFInfo
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- CN107795375A CN107795375A CN201711101409.2A CN201711101409A CN107795375A CN 107795375 A CN107795375 A CN 107795375A CN 201711101409 A CN201711101409 A CN 201711101409A CN 107795375 A CN107795375 A CN 107795375A
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- 238000009434 installation Methods 0.000 claims description 14
- 239000003921 oil Substances 0.000 description 80
- 239000010720 hydraulic oil Substances 0.000 description 7
- 239000000446 fuel Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
- F02B67/04—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus
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Abstract
The diesel engine double-layered tooth train of high-pressure oil pump rotating speed switching can be achieved, including：The crankshaft toothed wheel of front layer train, camshaft gear wheel, hydraulic pump gear, left and right idle gear and air compressor machine gear；The camshaft little gear and high-pressure oil pump gear of layer train afterwards；Crankshaft toothed wheel is arranged on crankshaft front end axle journal, camshaft little gear, camshaft gear wheel are sleeved on camshaft actuated end, left idle gear is arranged on left idle gear shaft, hydraulic pump gear is arranged in hydraulic pump driveshaft, high-pressure oil pump gear is sleeved in oil pump drive shaft, right idle gear is arranged on right idle gear shaft, and air compressor machine gear set is in air compressor machine drive shaft.Double-layer gear power train gearratio is accurate, reliability is high, and the efficient driving between drive shaft and working shaft can be achieved.Each gear parameter of front layer train is constant, layer train camshaft little gear and the number of teeth of high-pressure oil pump gear after only adjusting, you can changes bent axle and high-pressure oil pump gearratio, realizes the switching for being equipped with different rated engine speed high-pressure oil pumps.
Description
Technical field
The invention belongs to field of internal combustion engine, is related to a kind of diesel engine double-layer gear of achievable high-pressure oil pump rotating speed switching
System.
Background technology
It is well known that timing gear train is the important composition mechanism of diesel engine, wherein crankshaft toothed wheel is timing gear train
The annex work such as driving gear, driving valve actuating mechanism, high-pressure oil pump and air compressor machine.Four-cycle diesel machine crankshaft often takes two turns,
Once, therefore during equipped traditional mechanical oil supply system, the gearratio of high-pressure oil pump and bent axle is fixed as 1 to cylinder operation：2.
As diesel engine requires constantly improve to complete machine dynamic property and emission level, fuel injection system constantly upgrades, can be real
The high-pressure common rail oil supply system of existing electronic fuel injection timing has obtained more being widely applied, and the fuel feeding moment is no longer limited by machine
The driving of tool system, high-pressure oil pump is also corresponding to the gearratio of bent axle to change, and range of choice is more flexible, is no longer limited to
1：2.In the case where speed of crankshaft is constant, different gearratios represents the high-pressure oil pump of different rated engine speeds, and rotating speed is higher, combustion
Oil spurts pressure is bigger, and oil pressure stability is better.The timing gear train of conventional diesel engine uses individual layer layout pattern, high-pressure oil pump
With the gearratio of bent axle at the beginning of design just it has been determined that be unique definite value, to upgrade oil supply system, the higher injection pressure of realization
Power is to obtain more excellent dynamic property and emission performance, it is necessary to adjusts the gearratio of high-pressure oil pump and bent axle, generally requires to tooth
Train, which carries out big change, to be realized.
On the other hand, from the point of view of assembly relation, in timing gear of diesel engine system, crankshaft toothed wheel, cam shaft gear, lazy tooth
The fixing axle of wheel is mounted on body, and high-pressure oil pump gear, air compressor machine gear, the fixing axle of hydraulic pump gear are mounted in tooth
In engineer room, therefore the variation of gear train, the change of body, gear chamber structure will be brought, causes part category lengthy and jumbled, is unfavorable for
General exchange between product parts, increase cost.Therefore it provides a kind of diesel engine of achievable high-pressure oil pump rotating speed switching is double
Layer gear train layout pattern, it can both meet that different oil supply system output required that and can reduces parts species, and reduce production
Manufacturing cost.
The content of the invention
Be easily installed it is an object of the invention to provide one kind, securely and reliably, have high-pressure oil pump and bent axle is adjusted flexibly
Turn gearratio function and can realize that the diesel engine of high-pressure oil pump rotating speed switching is double on the premise of body, gear chamber structure is not changed
Layer gear train.
The technical scheme is that：The diesel engine double-layered tooth train of high-pressure oil pump rotating speed switching can be achieved, including：Front layer
Crankshaft toothed wheel, camshaft gear wheel, left idle gear, hydraulic pump gear, right idle gear and the air compressor machine gear of train；Layer train afterwards
Camshaft little gear and high-pressure oil pump gear；Crankshaft toothed wheel is arranged on crankshaft front end axle journal, camshaft little gear, camshaft
Gear wheel is sleeved on camshaft actuated end successively, and left idle gear is fixedly mounted on left idle gear shaft, and hydraulic pump gear is arranged on
In hydraulic pump driveshaft, high-pressure oil pump gear is sleeved in oil pump drive shaft, and right idle gear is fixedly mounted on right idle gear shaft,
Air compressor machine gear set is in air compressor machine drive shaft.
Bent axle, installation camshaft little gear, the camshaft of camshaft gear wheel, the left idle gear of installation of crankshaft toothed wheel are installed
Left idle gear shaft, the right idle gear shaft of the right idle gear of installation is arranged on diesel-engine body；The hydraulic pressure of hydraulic pump gear is installed
Pump drive shaft, the oil pump drive shaft for installing high-pressure oil pump gear, the air compressor machine drive shaft of installation air compressor machine gear are arranged on gear
On room.
Camshaft little gear is engaged with high-pressure oil pump gear, and camshaft gear wheel is nibbled with left idle gear and crankshaft toothed wheel respectively
Close, left idle gear engages with hydraulic pump gear, and crankshaft toothed wheel engages with right idle gear, and right idle gear engages with air compressor machine gear.
In described front layer train, the tooth number Z 4=40 of crankshaft toothed wheel, the tooth number Z 3=80 of camshaft gear wheel, camshaft
With gearratio i34=Z4/ Z3=1 of bent axle：2.
In described rear layer train, centre-to-centre spacing=module m × (the Z1+ Z2) of camshaft and high-pressure oil pump, camshaft
The number of teeth and Z1+ Z2=112 of little gear and high-pressure oil pump gear.
In described double-deck train, gearratio i14=i12 × i23 × i34 of high-pressure oil pump and bent axle, i23 are cam
Large and small gear ratio, because two gears are coaxial, the value is 1.Tooth number Z 2=56, hydraulic oil pump tooth when camshaft little gear 2
During tooth number Z 1=56 of wheel, i12=Z2/ Z1=1, then gearratio i14=i12 × i23 × i34=1 of high-pressure oil pump and bent axle ×
1 × 1/2=1/2, that is, the gearratio for meeting high-pressure oil pump and bent axle is 1：2, now centre-to-centre spacing=tooth of camshaft and high-pressure oil pump
Take turns modulus m × (Z1+ Z2)=m × (56+ 56)=112m；Tooth number Z 2=84, high-pressure oil pump gear when camshaft little gear
During tooth number Z 1=28, i12=Z2/ Z1=3, i14=i12 × i23 × i34=3 × 1 × 1/2=3/2, that is, meet high-pressure oil pump and song
The gearratio of axle is 3：2, the now centre-to-centre spacing of camshaft and high-pressure oil pump=module m × (Z1+ Z2)=m × (84+
28) =112m .Similarly, as Z2=64, Z1=48, i14=2/3；When Z2=70, Z1=42, i14=5/6, i.e., meet respectively
The gearratio of high-pressure oil pump and bent axle is 2：3 and 5:6, and the centre-to-centre spacing of camshaft and high-pressure oil pump is 112m.In summary,
Under identical camshaft and high-pressure oil pump centre-to-centre spacing, the gearratio for realizing bent axle and high-pressure oil pump is respectively 1：2、2:3、5:
6 Hes:3:2 switching.
In described front layer train, the centre-to-centre spacing A1 of crankshaft toothed wheel and camshaft gear wheel is 170~176mm, and it is horizontal
Centre-to-centre spacing A2 is 97~103mm；The centre-to-centre spacing A3 of camshaft gear wheel and left idle gear is 149~153mm, its horizontal centre
It is 82~86mm away from A4；The centre-to-centre spacing A5 of left idle gear and hydraulic pump gear is 82~88mm, its horizontal centre away from A6 be 73~
79mm；The centre-to-centre spacing A7 of crankshaft toothed wheel and right idle gear is 141~147mm, and its horizontal centre is 130~136mm away from A8；It is right
The centre-to-centre spacing A9 of idle gear and air compressor machine gear is 135~141mm, and its horizontal centre is 65~70mm away from A10；
In described rear layer train, the centre-to-centre spacing A11 of camshaft little gear and high-pressure oil pump gear is 157~162mm, its water
Flat centre-to-centre spacing A12 is 138~144mm.
The present invention can reach following beneficial effect after using above-mentioned technical proposal：Double-layer gear power train gearratio is accurate,
Reliability is high, can realize the efficient driving between drive shaft and working shaft.Each gear parameter of front layer train keeps constant, only logical
Cross layer train camshaft little gear and the number of teeth of high-pressure oil pump gear after adjusting, you can change the transmission of bent axle and high-pressure oil pump
Than the switching for being equipped with different rated engine speed high-pressure oil pumps being realized, without changing the other parts of gear train.Simultaneously in different transmissions
Than under the conditions of, the centre-to-centre spacing of camshaft and high-pressure oil pump keeps constant, and the installation center position on body, gear chamber is without adjusting
It is whole, so as to realize that body, gear chamber are general, effectively control manufacturing cost.
Brief description of the drawings
Fig. 1 is the planar structure schematic diagram of the diesel engine double-layered tooth train of the changeable high-pressure oil pump rotating speed of the present invention；
Fig. 2 is the dimensional structure diagram of the diesel engine double-layered tooth train of the changeable high-pressure oil pump rotating speed of the present invention.
In figure：1st, high-pressure oil pump gear, 2, camshaft little gear, 3, camshaft gear wheel, 4, crankshaft toothed wheel, 5, hydraulic pump
Gear, 6, left idle gear, right idle gear 7, air compressor machine gear 8.
Embodiment
The present invention is described further below in conjunction with the accompanying drawings.As shown in Figure 1 and 2, the switching of high-pressure oil pump rotating speed can be achieved
Diesel engine double-layered tooth train, is divided into forward and backward layer train, and front layer train includes：Crankshaft toothed wheel 4, camshaft gear wheel 3, left lazy tooth
Wheel 6, hydraulic pump gear 5, right idle gear 7, air compressor machine gear 8；Layer train includes afterwards：Camshaft little gear 2, high-pressure oil pump gear
1.Crankshaft toothed wheel 4 is arranged on crankshaft front end axle journal, and camshaft little gear, camshaft gear wheel are sleeved on camshaft actuated successively
End, left idle gear 6 are fixedly mounted on left idle gear shaft, and hydraulic pump gear 5 is arranged in hydraulic pump driveshaft, hydraulic oil pump tooth
Wheel 1 is sleeved in oil pump drive shaft, and right idle gear 7 is fixedly mounted on right idle gear shaft, and air compressor machine gear 8 is sleeved on air compressor machine
In drive shaft.
The bent axle of installation crankshaft toothed wheel 4, installation camshaft little gear 2, the camshaft of camshaft gear wheel 3, installation are left lazy
Left idle gear shaft, the right idle gear shaft of the right idle gear 7 of installation of gear 6 are arranged on diesel-engine body；Hydraulic pump gear 5 is installed
Hydraulic pump driveshaft, oil pump drive shaft, the air compressor machine drive shaft peace of installation air compressor machine gear 8 of installing high-pressure oil pump gear 1
In gear chamber.
Camshaft little gear 2 engages with high-pressure oil pump gear 1, camshaft gear wheel 3 respectively with left idle gear 6 and crank teeth
The engagement of wheel 4, left idle gear 6 engage with hydraulic pump gear 5, and crankshaft toothed wheel 4 engages with right idle gear 7, right idle gear 7 and air compressor machine
Gear 8 engages.
In described front layer train, the tooth number Z 4=40 of crankshaft toothed wheel 4, the tooth number Z 3=80 of camshaft gear wheel 3, cam
Gearratio i34=Z4/ Z3=1/2 of axle and bent axle.
In described rear layer train, centre-to-centre spacing=module m × (the Z1+ Z2) of camshaft and high-pressure oil pump, camshaft
The number of teeth and Z1+ Z2=112 of the little gear 2 with high-pressure oil pump gear 1.
In described double-deck train, gearratio i14=i12 × i23 × i34 of high-pressure oil pump and bent axle, i23 are cam
Large and small gear ratio, because two gears are coaxial, the value is 1.Tooth number Z 2=56, hydraulic oil pump tooth when camshaft little gear 2
During tooth number Z 1=56 of wheel 1, i12=Z2/ Z1=1, then gearratio i14=i12 × i23 × i34=1 of high-pressure oil pump and bent axle
× 1 × 1/2=1/2, that is, the gearratio for meeting high-pressure oil pump and bent axle is 1：2, now the centre-to-centre spacing of camshaft and high-pressure oil pump=
Module m × (Z1+ Z2)=m × (56+ 56)=112m；Tooth number Z 2=84, hydraulic oil pump tooth when camshaft little gear 2
During tooth number Z 1=28 of wheel 1, i12=Z2/ Z1=3, i14=i12 × i23 × i34=3 × 1 × 1/2=3/2, that is, meet hydraulic oil
The gearratio of pump and bent axle is 3：2, now the centre-to-centre spacing of camshaft and high-pressure oil pump=module m × (Z1+ Z2)=m ×
(84+ 28) =112m.Similarly, as Z2=64, Z1=48, i14=2/3, during Z2=70, Z1=42, i14=5/6, that is, distinguish
The gearratio for meeting high-pressure oil pump and bent axle is 2：3 and 5:6, and the centre-to-centre spacing of camshaft and high-pressure oil pump is 112m.To sum up
Described, under identical camshaft and high-pressure oil pump centre-to-centre spacing, the gearratio for realizing bent axle and high-pressure oil pump is respectively 1：2、
2:3、5:6 Hes:3:2 switching.
In described front layer train, the centre-to-centre spacing A1 of crankshaft toothed wheel 4 and camshaft gear wheel 3 is 170~176mm, its water
Flat centre-to-centre spacing A2 is 97~103mm；The centre-to-centre spacing A3 of camshaft gear wheel 3 and left idle gear 6 is 149~153mm, and it is horizontal
Centre-to-centre spacing A4 is 82~86mm；The centre-to-centre spacing A5 of left idle gear 6 and hydraulic pump gear 5 is 82~88mm, and its horizontal centre is away from A6
For 73~79mm；The centre-to-centre spacing A7 of crankshaft toothed wheel 4 and right idle gear 7 be 141~147mm, its horizontal centre away from A8 for 130~
136mm；The centre-to-centre spacing A9 of right idle gear 7 and air compressor machine gear 8 be 135~141mm, its horizontal centre away from A10 for 65~
70mm；
In described rear layer train, camshaft little gear 2 and the centre-to-centre spacing A11 of high-pressure oil pump gear 1 are 157~162mm, its
Horizontal centre is 138~144mm away from A12.
Crankshaft toothed wheel 4 is driven as the driving gear of double-layer gear power train by the bent axle of engine, and two layers of gear train is led to
Cross camshaft gear wheel 3, camshaft little gear 2 produces association.
When the engine runs, bent axle drives crankshaft toothed wheel 4 to turn clockwise（In terms of engine free end）, engagement with cams
Axle gear wheel 3, right idle gear 7, camshaft gear wheel 3 drive distribution cam axle to press defined timing phase relation and crankshaft-synchronous
Operating, valve timing working is then driven, while engaged with left idle gear 6.Left idle gear 6 engages with hydraulic pump gear 5, driving
Hydraulic pump works.Right idle gear 7 engages with air compressor machine gear 8, driving air compressor machine work, is provided for gearshift commutation and arrestment mechanism
Compressed air.Camshaft little gear 2 is co-axially mounted with camshaft gear wheel 3, and rotating speed is identical.Camshaft little gear 2 and hydraulic oil
Pump gear 1 engages, and drives high pressure fuel pump work.
In the timing gear train of diesel engine, crankshaft toothed wheel is drive gear, and high-pressure oil pump gear is final gear.
For traditional individual layer train, no matter what centre be driven by, and the gearratio i14 of high-pressure oil pump and bent axle is equal to
The gear ratio of crankshaft toothed wheel and high-pressure oil pump gear.To change gearratio, it is necessary to change the number of teeth, change two gear centres away from,
Cause the change of body, gear chamber and related meshing gear.From the horizontal layout of train of the present invention, double-deck train adds
The intermediate regulations link of gearratio, i14=i12 × i23 × i34, required according to the distribution of four-cycle diesel, every turn of bent axle
Two circles, cylinder operation once, open once, therefore the gearratio i34 of camshaft and bent axle is necessary for definite value 1 by inlet and exhaust valve：2；
I23 is the large and small gear ratio of cam, and because two gears are coaxial in this train, the value is 1, and definite value.Therefore, i14=
In i12 × i23 × i34, i23 × i34 perseverances are definite value 1/2, and i14 size is solely dependent upon the gearratio of high-pressure oil pump and camshaft
I12, i.e. gear gear ratio, therefore reasonable selection high-pressure oil pump gear 1 and the number of teeth of camshaft little gear 2, it is possible to realize
The direct switching of equipped different rotating speeds high-pressure oil pump.With i14=1:2 and i14=5:Exemplified by 6 two kinds of gearratios, when i14=1:2
When, i12=1:1, by two number of gear teeth and 2 parts can be considered as, camshaft little gear 2 and high-pressure oil pump gear 1 respectively account for 1 part therein；
When i14=5:6, then i12=5：3, by two number of gear teeth and 8 parts can be considered as, camshaft little gear 2 accounts for 5 parts therein, hydraulic oil
Pump gear 1 accounts for 3 parts therein.Due to standard drive centre-to-centre spacing=modulus ×（Two number of gear teeth and)/2, to realize two kinds of situations
Lower gear centre coordinate position keep it is constant, only need to by the number of teeth and be defined as 2,8 least common multiple multiple, i.e., 8 multiple,
According still further to different gearratio requirements, the gear number distribution ratio of adjustment camshaft little gear 2 and high-pressure oil pump gear 1.With such
Push away, just can realize two kinds of even more how different rated engine speed high-pressure oil pumps on the premise of body, gear chamber structure is not changed
Switching.As previously mentioned, two number of gear teeth are taken and for 112, make respectively camshaft little gear 2 tooth number Z 2=56,64,70,
84, during tooth number Z 1=56,48,42,28 of high-pressure oil pump gear 1,1 can be realized under identical centre-to-centre spacing:2、2:3、5:6、3:
2 four kinds of currently used high-pressure oil pumps and transmission of crankshaft ratio.
In the diesel engine double-layered tooth train of above-mentioned achievable high-pressure oil pump rotating speed switching, the design after verification experimental verification
With improvement, gearratio is accurate, reliability is high, can realize the efficient driving between drive shaft and working shaft.Each tooth of front layer train
Take turns parameter and keep constant, only pass through layer train convexity wheel shaft little gear after adjustment and the number of teeth of high-pressure oil pump gear, you can change
The gearratio of bent axle and high-pressure oil pump, the switching for the high-pressure oil pump for being equipped with different rated engine speeds is realized, without changing gear train
Other parts.Simultaneously under the conditions of different drive ratios, the centre-to-centre spacing of camshaft and high-pressure oil pump keeps constant, body, gear chamber
On installation center position without adjustment, so as to realize that body, gear chamber are general, effectively control manufacturing cost.
Finally it should be noted that：The preferred embodiments of the present invention are the foregoing is only, are not limited to this hair
Bright full content, although the present invention is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it can still carry out formal modification to the technical scheme described in previous embodiment, or to which part skill
Art feature carries out equivalent substitution.All made form modifications within the thinking enlightenment of the present invention, equivalent substitution etc., all should be wrapped
It is contained within the scope of the present invention.
Claims (6)
1. the diesel engine double-layered tooth train of high-pressure oil pump rotating speed switching can be realized, including：Front layer train：Crankshaft toothed wheel（4）, cam
Axle gear wheel（3）, left idle gear（6）, hydraulic pump gear（5）, right idle gear（7）And air compressor machine gear（8）；Layer train afterwards：It is convex
Wheel shaft little gear（2）And high-pressure oil pump gear（1）；It is characterized in that：Crankshaft toothed wheel（4）It is convex on crankshaft front end axle journal
Wheel shaft little gear（2）, camshaft gear wheel（3）Camshaft actuated end, left idle gear are sleeved on successively（6）It is fixedly mounted on left lazy
On gear shaft, hydraulic pump gear（5）In hydraulic pump driveshaft, high-pressure oil pump gear（1）It is sleeved in oil pump drive shaft,
Right idle gear（7）It is fixedly mounted on right idle gear shaft, air compressor machine gear（8）It is sleeved in air compressor machine drive shaft.
2. the diesel engine double-layered tooth train of achievable high-pressure oil pump rotating speed switching according to claim 1, it is characterised in that：
Crankshaft toothed wheel is installed（4）Bent axle, installation camshaft little gear（2）, camshaft gear wheel（3）Camshaft, the left lazy tooth of installation
Wheel（6）Left idle gear shaft, the right idle gear of installation（7）Right idle gear shaft be arranged on diesel-engine body on；Hydraulic pressure pump tooth is installed
Wheel（5）Hydraulic pump driveshaft, installation high-pressure oil pump gear（1）Oil pump drive shaft, installation air compressor machine gear（8）Air compressor machine
Drive shaft is arranged in gear chamber.
3. the diesel engine double-layered tooth train of achievable high-pressure oil pump rotating speed switching according to claim 1, it is characterised in that：
Camshaft little gear（2）With high-pressure oil pump gear（1）Engagement, camshaft gear wheel（3）Respectively with left idle gear（6）And crank teeth
Wheel（4）Engagement, left idle gear（6）With hydraulic pump gear（5）Engagement, crankshaft toothed wheel（4）With right idle gear（7）Engagement, right lazy tooth
Wheel（7）With air compressor machine gear（8）Engagement.
4. the diesel engine double-layered tooth train of achievable high-pressure oil pump rotating speed switching according to claim 1, it is characterised in that：
In described front layer train, crankshaft toothed wheel（4）Tooth number Z 4=40, camshaft gear wheel（3）Tooth number Z 3=80, camshaft with
Gearratio i34=Z4/ Z3=1 of bent axle：2.
5. the diesel engine double-layered tooth train of achievable high-pressure oil pump rotating speed switching according to claim 1, it is characterised in that：
In described front layer train, crankshaft toothed wheel（4）With camshaft gear wheel（3）Centre-to-centre spacing A1 be 170~176mm, in its level
The heart is 97~103mm away from A2；Camshaft gear wheel（3）With left idle gear（6）Centre-to-centre spacing A3 be 149~153mm, it is horizontal
Centre-to-centre spacing A4 is 82~86mm；Left idle gear（6）With hydraulic pump gear（5）Centre-to-centre spacing A5 be 82~88mm, its horizontal centre
It is 73~79mm away from A6；Crankshaft toothed wheel（4）With right idle gear（7）Centre-to-centre spacing A7 be 141~147mm, its horizontal centre is away from A8
For 130~136mm；Right idle gear（7）With air compressor machine gear（8）Centre-to-centre spacing A9 be 135~141mm, its horizontal centre is away from A10
For 65~70mm.
6. the diesel engine double-layered tooth train of achievable high-pressure oil pump rotating speed switching according to claim 1, it is characterised in that：
In described rear layer train, camshaft little gear（2）With high-pressure oil pump gear（1）Centre-to-centre spacing A11 be 157~162mm, its
Horizontal centre is 138~144mm away from A12.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711101409.2A CN107795375A (en) | 2017-11-10 | 2017-11-10 | The diesel engine double-layered tooth train of high-pressure oil pump rotating speed switching can be achieved |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711101409.2A CN107795375A (en) | 2017-11-10 | 2017-11-10 | The diesel engine double-layered tooth train of high-pressure oil pump rotating speed switching can be achieved |
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| CN205260133U (en) * | 2015-11-06 | 2016-05-25 | 中国重汽集团济南动力有限公司 | Rearmounted gear train is used to diesel engine |
| CN207420714U (en) * | 2017-11-10 | 2018-05-29 | 洛阳拖拉机研究所有限公司 | The diesel engine double-layered tooth train of high-pressure oil pump rotating speed switching can be achieved |
-
2017
- 2017-11-10 CN CN201711101409.2A patent/CN107795375A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201953472U (en) * | 2011-02-10 | 2011-08-31 | 中国一拖集团有限公司 | Back gear train of diesel engine |
| CN203453410U (en) * | 2013-08-09 | 2014-02-26 | 第一拖拉机股份有限公司 | Diesel engine gear and chain wheel hybrid transmission system |
| CN205260133U (en) * | 2015-11-06 | 2016-05-25 | 中国重汽集团济南动力有限公司 | Rearmounted gear train is used to diesel engine |
| CN207420714U (en) * | 2017-11-10 | 2018-05-29 | 洛阳拖拉机研究所有限公司 | The diesel engine double-layered tooth train of high-pressure oil pump rotating speed switching can be achieved |
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Application publication date: 20180313 |
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