CN104696100A

CN104696100A - An internal combustion engine with an oil duct in a crankcase

Info

Publication number: CN104696100A
Application number: CN201410734357.2A
Authority: CN
Inventors: 伯恩哈德·贝施; 马库斯·伯克斯霍夫
Original assignee: Steyr Motors GmbH
Current assignee: Steyr Motors GmbH
Priority date: 2013-12-10
Filing date: 2014-12-04
Publication date: 2015-06-10
Anticipated expiration: 2034-12-04
Also published as: AT514804A4; AT514804B1; DE102014118059A1; CN104696100B

Abstract

The invention relates to an internal combustion engine having inline type cylinders in a cylinder block (1) and a crankcase (2). The crankcase (2) includes separating walls (8) between cylinders with crankshaft bearings (11). The two sides of each cylinder in the crankcase (2) are respectively provided longitudinal oil distribution channels (18, 19). Pressure oil is conveyed to the crankshaft bearings (11) and other consumption devices via the oil distribution channels (18, 19). To ensure good oil supplying to all the consumption devices when the manufacturing cost is lowest, the two oil distribution channels (18, 19) are connected with each other through a transverse channel (23) extending in the separating walls (8). The transverse channel (23) has been manufactured in casting of the crankcase (2). A portion, connected to the oil distribution channels (18, 19), of a cross section of the transverse channel (23) is roughly circular and is flat in the transverse center (25).

Description

The vittate internal-combustion engine of tool in crankcase

Technical field

The present invention relates to a kind of internal-combustion engine in cylinder block and crankcase with cylinder in line, its to comprise with the cylinder of crankshaft bearing between next door, wherein respectively arrange in crankcase inside cylinder both sides and longitudinal join oily passage, join oily passage to crankshaft bearing or other customer discharge pressures oil by this.Other described customers are such as the nozzles for piston cooling.

Background technique

By the known this kind of internal-combustion engine of DE19933363A1 patent documentation.This internal-combustion engine has two and joins oily passage, every side has one and joins oily passage, joins oily passage and is connected with the compression-side of oil pump by respective supply line.This just needs at least one to be fixed on force feed pipeline in cylinder block in outside.Usually realize this fixing by screwed union, and the sealing of this screwed union existing problems.Outside the too high and force feed pipeline of the working strength of installing force feed pipeline is exposed to.

Alternatively, according to DE10024207A1 patent documentation, join oily interchannel connection for two and can be made into and be communicated with crankshaft bearing by branched bottom.But this require passage crankcase next door and be suitable for oil crankshaft bearing in cross section larger.The thickness in next door determines the interval of cylinder, and this interval should be little as far as possible.

No. JP2000-045740A patent document discloses a kind of cluster engine, and this cluster engine side has joins oily passage, and opposite side has the nozzle for piston cooling.Branched bottom leads to crankshaft bearing by joining oily passage.Near the lower end of branched bottom, branched off nozzle respectively that connected by longitudinal hole to two in branch duct.

Summary of the invention

The object of the invention is to, complete fluid distribute in cylinder block inside, this can guarantee the fuel feeding of all customers sufficient while manufacture cost is minimum.

According to the present invention, joining the crosspassage fluid communication with each other of oily passage by extending in next door for two, realizing this crosspassage when casting cylinder block float chamber by installing chipware respectively in the mould.This is completely without the need to assembly expenses, and the joint positive confinement of joining in oily passage next door and being protected further.

In improvement project of the present invention, join oily passage with geodesic curve mode on crankshaft bearing extends and crosspassage joins oily passage with the shortest Path Connection.At this height, passage is also cooled thus near cooling jacket.In addition, can short line be so the nozzle fuel feeding cooled for piston.Be also larger-size distribution passage slot milling herein.The loss of liquid stream can be made to minimize with the shortest Path Connection.

In one preferably embodiment, the cross section of crosspassage is different when sectional area is identical over its length, and preferably, the cross section of crosspassage is to be communicated to the part of joining oily passage substantially rounded and become flat at the middle part of transverse direction.At middle part, the distance between the cylinder wall of cylinder block is minimum.Which dictates that the length of whole motor.Flat section counts wherein.Must being helped this, without the need to increasing this distance, in crosspassage, also there will not be chokes point.By the shape determination crosspassage of the chipware of insertion mold, therefore flat section can not cause extra expending.

In one preferably embodiment, its be communicated to the part of joining oily passage substantially rounded and the middle part of transverse direction become flat.At middle part, the distance between the cylinder wall of cylinder block is minimum.Which dictates that the length of whole motor.Flat section counts wherein.Must being helped this, without the need to increasing this distance, in crosspassage, also there will not be chokes point.By the shape determination crosspassage of the chipware of insertion mold, therefore flat section can not cause extra expending.

Finally, lead to crankshaft bearing together with the branch duct of joining from least one oily passage, as the same from the second branch duct of joining oily passage.The nozzle being used for piston cooling is set in a similar fashion.In a word, sufficient fuel feeding reliably be guaranteed.

Accompanying drawing explanation

Set forth the present invention below with reference to accompanying drawings.Wherein:

Fig. 1 represents the sectional arrangement drawing of the cylinder block by internal-combustion engine according to the present invention;

Fig. 2 represents the sectional view along Fig. 1 center line II-II;

Fig. 3 represents the sectional view along Fig. 1 center line III-III;

Fig. 4 represents the isometric views of oil duct.

Embodiment

In FIG, represent cylinder block with label 1, represent crankcase with label 2.The two as one-body molded as foregoing embodiments, but also can twist the separate part be connected together.At this, tip portion 3 is same and cylinder block 1 is one-body molded.The center line of at least two cylinders is represented with label 4.Each cylinder is formed by cylinder wall 5 and the cold cover 6 that anhydrates.Cooling water chamber 7 therebetween.

Crankcase 2 is made up of at least one next door 8 between the sidewall 9 (see Fig. 2) of both sides, end wall 12 and each cylinder substantially.Terminate in the separating surface 13 of the center line 10 comprising bent axle (not shown) in below, upper half part 11 of crankshaft bearing is also by this separating surface 13.

What the direction can finding out along axis 10 in fig. 2 extended joins oily passage 18 and 19 (first joins oily passage 18 and second joins oily passage 19).Join oily passage for these two and be positioned at transition zone from crankcase 2 to cylinder block 1.When cylinder block is separated, they are then positioned at crankcase 2, but at least geodesic curve higher than crankshaft center line 10, be positioned at the bottom of cylinder wall 5 at this.

In an illustrated embodiment, the both sides of side cooling jacket 14 are all respectively provided with distribution passage 15 for cooling water with collection flow channels 16 and are connected with cooling water chamber 7 by perforate 17.At this, passage 15 and 16 forms the outer wall of cylinder block 1.In conventional configurations, cooling jacket 14 is outer wall.Join oily passage 18 and 19 to be arranged on immediately below the passage 15 and 16 of cooling water flow warp.Join oily passage 18 from first in branch duct 26 (see Fig. 3) next door 8 and lead to crankshaft bearing 11.Rib 21 in next door 8 can make branch duct 26 wider, and next door 8 can not be made thinning.Second joins the nozzle 20 that oily passage 19 (among others) is also provided for piston cooling.

Fig. 3 represents that joining oily passage 18 for two is connected by crosspassage 23 with shortest path with 19, and this crosspassage 23 cross section over its length changes to some extent.Be communicated in the part 24 of joining oily passage 18 and 19, cross section is rounded and diameter is roughly equal with the diameter of joining oily passage 18 and 19.Intermediate portion 25 is longitudinally being driven plain.In other words, when cross section is identical, intermediate portion 25 is long and narrow and higher (see also 25 in Fig. 1).

This structure in cross section can allow each crosspassage 23 to pass through between cylinder wall 5, the shortest due to the tubular profile of cylinder wall 5 in this its distance.Because crosspassage is made by rehandling chipware, thus core bore is arranged in outer wall 22, with core plug 27 locking core bore.Branch duct 26 is joined oily passage 18 from first and is led to crankshaft bearing 11.

Only can find out several oil ducts in the diagram.Supply passage 30 leads to first from oil pump (not shown) joins oily passage 18.In this (relating to the motor with two cylinder), it is joined oily passage 19 by crosspassage 23 and second and is connected.Another supply passage 31 upwards leads to other customer, valve system/valve management mechanism (not shown) and optional existing turbosupercharger from it.Branch duct 26 is joined oily passage 18 from first and is led to crankshaft bearing 11.Joining oily passage 19 by second is nozzle 20 fuel feeding.

label list

1 cylinder block

2 crankcases

The tip portion of 3 cylinder block 1

4 cylinder axis

5 cylinder walls

6 cooling jacket front ends

7 cooling water chambeies

8 next doors

The sidewall of 9 bent axle cylinders 2

10 crankshaft center lines

11 crankshaft bearings

The end wall of 12 crankcases 2

13 separating surfaces

14 cooling jacket sides

15 distribute passage (water)

16 collection flow channels (water)

17 perforates

18 first join oily passage

19 second join oily passage

20 nozzles cooled for piston

Rib in 21 next doors 8

The outer wall of 22 passages 15,16

23 crosspassages

The cylinder part of 24 crosspassages 23

The flat section of 25 crosspassages 23

26 branch ducts

27 core plugs

The supply passage of 30 oil pumps

31 passages being connected to other devices (cylinder head, turbosupercharger)

Claims

1. an internal-combustion engine, this internal-combustion engine has cylinder in line in a cylinder block (1) and a crankcase (2), next door (8) between this crankcase (2) comprises with the described cylinder of crankshaft bearing (11), wherein in described crankcase (2) both sides of described cylinder one longitudinal direction is respectively set join oily passage (18,19), oily passage (18 is joined by described, 19) to described crankshaft bearing (11) and other customer discharge pressures oil

It is characterized in that:

Oily passage (18 is joined described in two, 19) crosspassage (23) fluid communication with each other by extending in described next door (8), this crosspassage (23) is made by installing a chipware in the mould respectively when casting described crankcase (2).

2. internal-combustion engine according to claim 1, it is characterized in that: described in join oily passage (18,19) ground survey line is arranged on described crankshaft bearing (11), described crosspassage (23) joins oily passage (18,19) described in connecting with shortest path.

3. internal-combustion engine according to claim 1, is characterized in that: the cross section of described crosspassage (23) changes over its length to some extent.

4. internal-combustion engine according to claim 3, it is characterized in that: it is substantially rounded and become flat at the middle part (25) of transverse direction that the part (24) of oily passage (18,19) is joined in the cross section of described crosspassage (23) described in being communicated to.

5. internal-combustion engine according to claim 1, it is characterized in that: branch duct (26) are at least joined oily passage (18) from described first and led to described crankshaft bearing (11), at least joining oily passage (19) from described second is nozzle (20) fuel feeding for piston cooling.

6. internal-combustion engine according to claim 1, is characterized in that: a supply passage (31) is joined oily passage (19) from described second and led to another customer.

7. internal-combustion engine according to claim 6, is characterized in that: another customer described is the valve management mechanism in tip portion (3).

8. internal-combustion engine according to claim 6, is characterized in that: another customer described is a turbosupercharger.