SE439520B - SUSPENSION LIMITS FOR 4-6-CYLINDRICAL ROW TYPE COMBUSTION ENGINES - Google Patents

Description

20 25 40 7802907-1 Z a good torque and power profile of the engine, while the suction manifold space of the suction manifold is small. The present intake manifolds are above all suitable for otto- or diesel-type injection engines but also for carburettor-otto engines. By parallel displacement and / or pivoting of the intermediate sections with the manifold around the intended sectional axes and in relation to the connection ends which are adaptable in their course, a total construction for a suction manifold can be chosen which is favorable to the suction conditions.

Suitable embodiments of the invention are characterized in subclaims, wherein with the features according to claims 2 and 3 a particularly compact and space-saving construction is obtained and with the features according to claim 4 a training which is particularly well suited for motors with lateral inclination, wherein by the vertical arrangement of collection house obtained: very small lateral space requirements for the intake manifold.

Claims 5, 6 and 7 characterize advantageous embodiments of the invention with collecting houses lying above the connection ends, while claims 8 - 12 and 16 state special features for a design favorable for processing and casting of the iHSU8 fl ínH52T6 fl rÖTêt and the casting core for the branch pipe; production. These characteristics require independent protection.

Due to the special design of the intake manifold for 4-cylinder in-line engines according to claims 13-15, a good oscillation ratio is achieved in the individual intake tubes and thus a good torque and power profile of the engine, since a direct pressure wave transition between opposite intake manifolds is dried by their mutual oblique device. The individual intake manifold according to claim 14 has a relatively large length and radius of curvature, without the space requirements of the intake manifold having been significantly increased. Thereby the flow and oscillation ratio is further improved in the flow tube. The features according to claim 15 provide a flow-favorable transition of the inset to their connection ends.

The invention is described in more detail in the following with reference to embodiments shown in the drawing. In the drawing, fig. 1 is a front view of an intake manifold for a 6 -cy 1 in-line 5 k internal combustion engine, fig. 2 is a side view of the intake manifold of FIG. 1, fig. 3 is an oblique view from above of an intake manifold. 1 and 2 in the direction of the arrow Ill in fig. 2, fig. 4 is a front view of a second intake manifold for a 6-cylinder in-line engine, FIG. 5 a top view of the insugnünß- according to fig. 4, fig. Fig. 6 is a side view of the suction manifold and the manifold 20 according to Fig. 4, Fig. 7 is a section along the line VII-VII in Fig. 4, Fig. 8 is a section along the line VIII-VIII in Fig. 4, Fig. Fig. 2 is a section on the line IX-IX in Fig. 4, Fig. 10 is a section on the line XX in Fig. and fig. Fig. 12 is a side view of the intake manifold of Fig. 11.

Pig. 1-3 show a suction manifold as an otto-motor, which essentially consists of one for a 6-cylinder injection molded housing not shown (2) and six individual suction pipes 3, 4, S, 6, 7 and 8. plan 9 parallel and in pairs opposite each other from the collection house 2 and are of equal length. They have curved, overlapping intermediate sections 10, 11, 12, 13, 14 and 15 and have inlet channels 16, 17, 18, 19, 20 and 21 connectable to inlet to a motor (not shown), which extend approximately parallel to each other and approximately in a plane parallel to the axes 23, 24 and 25 to the ends of the intake pipes 2 extending from the manifold 2 - 8. The inner cross-section of the manifold 13-saws from the manifold 2 in the direction of the connection ends 16-21. The manifold housing 2 is arranged approximately symmetrically with respect to the row of connection ends 16-21. The curved intermediate sections 10-15 of the suction sections 3-8 are arranged in pairs and at least partly substantially in planes 26, 27 and 28, which intersect near the connection ends 16 ~ 21 approximately in parallel with the row of connection ends, imaginary axes 29, 30 and 31 and on the basis of these, the fan is shaped apart in the direction of the collection housing 2.

The ends extending from the collection housing 2 to the suction nozzle 12-8 have different distances to the imaginary axes 29-31. The two furthest from the imaginary shafts 29-31 from the manifold 2 extending the intake pipes 5 and 6 are connected to the two middle connecting ends 18 and 19. The two suction pipes 30 from the manifold 2 extending 30, 31 which are closest to the imaginary shafts 29-31 , are connected to the two outer connection ends 16 and 21. The two between the indicated suction pipes 30 and 5 and 6 and 8 of the intake pipes 4 and 7 emanating from the manifold 2 are connected to between the middle and the outer connection ends 18 and 19, respectively. 16 and 21 are the curved connecting ends 17 and 20. The curved intermediate sections 12 and 13 of the furthest axes 29-31 from the junction housing Z emanating from the swingarm 15 and 6 and of the adjacent fuse 14s and 7s are curved approximately S- shaped first towards the connection ends 16-21, then towards each other and finally towards the connection ends 18 and 19 of the pipes, respectively. 17 and 20.

The plane 9, in which the ends extending from the collection housing 2 of 'J1 10 20 25 30 35 40 7802907-1 4 íH fi M $ rönn13-8 lie substantially, is arranged at approximately a right angle to the plane 28, in which the curved intermediate sections 10 and 15 of the two extending from the collection housing 2 are closest to the imaginary axes 29-31. The former plane 9 forms with a plane 32, in which the flanges 33 of the connecting ends 16-21 lie, an acute angle Ü /, which is open towards the connecting ends 16-21 and towards the joint housing Z. The connecting ends 16-21 therefore have corresponding curvatures from the imaginary shafts 29-31 to their flanges 33.

The manifold housing 2 has a slightly curved front side 34, which lies approximately in one plane, parallel to the ends of the inlet pipes 3-8 emanating from the housing, and at right angles to this front side, two parallel pipes 3 and 8 are located, which in turn gables 35. At the upper end, the front side 34 merges into an upper side 36.

The collection housing Z further has a rear side 37, the upper part of which is substantially parallel to the front side 34. In the upper part of the rear side 37 an opening 38 is arranged, to which an air supply line (not shown) can be connected. The connection ends 16-21 are formed with places 39 for fastening injection valves.

Through this formation of the manifold 2 and the adjacent pipes 3-8 with their connecting ends 16-21, equally small radii and large lengths can be applied to small pipes with a relatively large curvature-connecting space. The suction manifold 2 can glut fl s ï a $ THINK- Of this For this reason, it is so trained that it can be designed relatively easily and simply and free from undercuts. The pipes 3-8 have common wall sections in the overlapping areas, and the two pipes 5 and 6 opening into the middle connection ends 18 and 19 also have common wall sections with the collecting housing Z. In this way not only a greater rigidity is achieved but also a better formability and a accumulation of material is largely avoided.

Furthermore, the suction pipe system 2 is so designed that for molding, together with the necessary cores, a mold is sufficient which has only two mold parts and a slide. The pipes 3-8 are in the area of some molded parts partially connected to each other by means of walls 40. Through these walls a high rigidity of the suction pipe system is achieved and a lot of plastering work is avoided.

Figs. 4-10 show a modified embodiment of the above-described furnace. This suction manifold 101 consists essentially of a manifold 102 and six individual intake pipes 103, 104, 105, 106, 107 and 108. The pipes are laid out in one plane 109. parallel and in pairs opposite each other from the collection housing 102 and are of equal length. They have curved, overlapping intermediate sections 110, 111, 112, 113, 114 and have inlet channels to a combustion engine (not shown) 120 and 121, which extend approximately uniformly parallel to each other and approximately at right angles, approximately in a parallel plane 122, to the ends extending from the manifold 102. The inner cross section of the tubes 103-108 is circular and tapers from the manifold 102 in the direction of the connection ends 116-121. The manifold 102 is arranged approximately transversely to the connection ends 116-121. The curved intermediate sections 110-115 of the pipes 103-108 proceed in such a way that - starting with the two on the side of the connection ends 116-121 from the collecting housing 102 - 119 connectable connection ends 116, 117, 118, 119, the walking pipes 105 and 106 , the connecting ends 118 and immediately adjacent to each other in the middle of the radon connecting ends 116-121 - against the order of the exits of the pipes 103-108 from the manifold 102 correspond the order of their connecting ends 118, 117, 116 resp. 119, 120, 121 - starting from the middle of the row of connection ends.

This arrangement arranged to cooperate with the two on the side of the connection ends 116-121 means that the two middle connection ends 118 and 119 are pipes 105 and 106 emanating from the collecting housing 102, while the two outermost connection ends 116 and 121 are arranged to cooperate with the two on the to the connection ends 116-121 opposite side from the pipes 103 and 108. The two between the indicated pipes 103 and 105 resp. 106 and 108 from the manifold housing 102 extending further inlet pipe 1104 and 107 merge into the ones between the middle and the outermost connection ends 116 and 118, respectively. 119 and 121 over the connection ends 117 and 120. The curved intermediate sections 112 and 113 of the tubes 105 and 106 with the middle connection ends 118 and 119 are curved first away from the connection ends of the assembly housing 102 outgoing bound 116-121 and then towards them.

A first part 123, 124, 125, 126, 110-115 of which with the plane 122 of the connecting ends 116-121 forms a tube 103-108 of each pair in the direction of 127 and 128 of the intermediate sections lies approximately in a plane 129, the later ends open vinke1C <. The plane 129 intersects one or more parallel shafts 129 'with the row of connecting ends 116-121. The angle <<is made larger with increasing distance of the outlets of the pairs of tubes 105, 106; 104, 107 resp. 103, 108 from the plane of the manifold housing 102 lying on the side of the connection ends 116-121. A second part 130, 131, 132, 133, 134 and 135 of the intermediate sections 110-115 of the tubes 103-108 lie substantially in a plane 136, which forms an open angle directed away from the collection housing, called the plane 122 of the connecting ends 116-121. The angle / 3 is made larger with increasing distance of the connecting ends 118, 10 20 25 50 35 40 7802907-1 6 119, 117, 120 resp. 116, 121 from the center of the row of connection ends, so that the plane 136, in which the other portions 130, 135 of the curved intermediate sections 116, 121 of the two outermost connection ends 116 and 121 lie, is approximately parallel to the center-longitudinal plane 137 of the manifold housing 102. .

The manifold 102 has a slightly curved upper side 138, which lies in a plane approximately parallel to the ends of the tubes 103-108 emanating from the manifold 102, and further has at right angles to this upper side two parallel side walls 139 and 140 parallel to each other. end of the manifold housing 102, which is adjacent the connection ends 116-121, the upper side 138 has a downward curvature 141 and merges into a low end wall 142, which with a further curvature 143 merges into a sloping bottom 144.

The latter faces the connection ends 116-121 and lies approximately parallel to the plane 129, in which the first parts 125 and 126 of the intermediate sections 112 and 113 of the pipes 105 and 106 connected to the middle connection ends 118 and 119 lie. At its end facing away from the connection ends 116-121, the collecting housing 102 has a wall 145, which is arranged approximately parallel to the first parts 123 and 128 of the tubes 103 and 108, which merge into those tubes 103 and 108 with their intermediate sections 110 and 115. of the outermost connection ends 116 and 121. In the wall 145 an opening 146 is arranged, which is connectable to an air supply line (not shown).

Below the opening 146, in a lug 147 on the collecting housing 102, a hole 148 is provided for an additional air connection (not shown). This hole opens into a recess 149 at the lowest point of the manifold housing 102. At the bottom 150 of the recess 149 a hole 151 is provided for a starting nozzle (not shown).

The connection ends 116-121 are provided with flanges 152, which are connected to each other in the area of their half lying in the direction of the collection housing 102. Arranged in the wall facing each inclined bottom 144 of each connecting end 116-121 is a through-going hole 153 inclined in the direction of the flange 152 and an abutment surface 154, into which an injection nozzle (not shown) can be inserted.

Through this formation of the manifold 102 and through those to the pipes 103-108 with their connecting ends 116-121, pipes with a relatively large curvature - this connection can be applied in a small space of equal radius of length and large length.

The suction manifold 101 can be cast in one piece. For this reason, it is so designed that it can be produced relatively easily and simply as well as from undercuts.

The ina45 pipes 103-108 have in the overlapping areas common wall sections 155 and 156, and the two pipes 105 and 106 opening into the middle connection ends 118 and 119 also have common wall sections 157 with the collecting housing 102. This results in not only greater rigidity but also better formability.

Furthermore, the suction manifold 102 is so formed that a mold is sufficient, which consists of two mold parts and two slides.

The straws 103-108 are in the area of molded surfaces partially connected to each other by means of walls 158, 159 and 160. Each of the walls 158 extends between a side wall 139, 140 of the collecting housing 102 and the first part 125 resp. 126 of the curved intermediate section 112 resp. 113 of suction for the casting pipe 105 resp. 106, which lie closest to the connection ends 116-121 emanates from the collection housing 102. The walls 158 lie approximately parallel to the inclined bottom 144 of the collection housing 102. Additional walls 159, 160, which form a continuation of the walls 158, extend between the tubes 103-105 and 106-108. , corresponding to their greater angle <3 (relative to the connecting ends 116-121, up to a ridge 161, the main parts 162 of which connect the tubes 103-108 in the region of the transition of their curved intermediate sections 110-115 to the connecting ends 116-121. The ridge 161 lies in a mold surface and extends in a plane parallel to the inclined bottom 144 of the collection housing 102. In the area of the collection housing 102, the ridge 161 is offset parallel to the opening 146 in the collection housing 102, transition section 163 connecting the offset portion 164 of the ridge 161 with the two main parts 162. Further walls 165 adjoining the side walls 139 and 140 of the collection housing 102 lie at the walls 158 indicated against the first -160 and the ridge 161 turn the side of the tubes 103-108 in the area of their exit from the manifold 102 and extend to the transition of the first portions 123-128 of the curved intermediate sections 110-115 to the second portions 130-135 of the curved ones. intermediate sections 110-115. The walls 165 and the first-mentioned walls 158 merge into each other and form on each side of the collecting housing 102 a niche 166, which can be formed free from undercuts. Downstream of the ridge 161, the pipes 103-108 are not connected to each other by means of intermediate wall parts. Only the flanges 152 of their connecting ends 116-121 are connected to each other. Since the pipes 103-108 in the area of their exit from the collecting housing 102 lie partly oxconirically in relation to the mold surface, they are provided with lugs 167 which extend tangentially in relation to the otherwise circular outer contour approximately in the design direction up to the the wall 165. The mold surface extends in the region of the connecting ends 116-121 likewise eccentrically, so that the connecting ends 116-121 are also provided with lugs 168, which extend tangentially in relation to the otherwise circular outer contour approx. in the design direction up to the mold surface.

On the side of the connecting ends 116-121 facing the sloping bottom 144 of the manifold housing 102, a longitudinal bead 169 is provided, which extends approximately parallel to the design direction and contains the through hole for inserting an injection nozzle.

The abutment surfaces 154 in the walls resp. the longitudinal beads 169 of the connecting ends can be milled out in a single operation.

The tangential lugs 167 and 168 make it possible to easily design the suction manifold without loose parts. Those between the collection housing 102 and the pipes 105 and 106, respectively. the walls 158-160 and 165 arranged between the pipes and the back 161 make it possible to avoid or facilitate plastering work and give suction pipe installations 101 increased rigidity. The longitudinal beads 169, which extend approximately up to the transition of the connecting ends 116-121 to the curved intermediate sections 110-115, likewise serve to avoid undercuts.

The surface shaded by dash-dotted lines in Fig. 7 represents a casting core 170 for casting the intake manifold 101, and the casting core consists of three core sections 171, 172 and 173, which in the area of the collection housing 102 are connected to each other during engagement with each other and surface contact with each other. Each of these core sections consists of a core part for the collection housing and two core parts for each of two opposite pipes 105 and 106, 104 and 107, respectively, extending from the collection housing 102. 103 and 108. By this division, the core 170 can be manufactured relatively easily and inexpensively. In addition, a possible casting skin and degree formation takes place in places in the collection house, where the flow is not unduly affected by the casting skins or the degrees.

The intake manifolds shown and described can, in particular for row-internal combustion engines, be modified in a simple manner. The process can be 5- and 4-cylindrical by omitting one or two outer tubes. of the pipes as well as the position of the manifold within the scope of the invention are varied to a large extent in relation to the connection ends by parallel displacement and / or by pivoting about the indicated socket axes of the plane of the intermediate sections according to any space requirements. For carburettor engines, as usual, only the manifold housing must be adapted to the carburettor connections. Within the scope of the invention, the ends of the pipes emanating from the assembly housing can instead of lying in a plane also in a triangular device, in which the ends of the middle tubes are located at greater distances from the imaginary axes than as shown. This results in, when needed, a lower height of the collection housing and thus of the entire suction pipe system.

Fig. 11 and 12 show a suction manifold 201 for a 4-cylinder, not shown injection-operated internal combustion engine such as an otto engine, which consists essentially of a manifold 202 and tubes 203, 204, 205 and 206. The tubes 203-206 start from the manifold. 202 in an approximately horizontal plane obliquely relative to each other and in pairs opposite each other and are approximately equal in length. They interlock and have connecting ends 207, 208, 209 and 210, which are connectable to inlet ducts to the internal combustion engine (not shown) by flanges and are directed approximately parallel to each other and extend sn to a vertical, longitudinal center plane 211 of the manifold 202.

In the drawing, dashed lines shown in the drawing, imaginary extensions 212, 213, 214 and 215 of the tubes 203-206 connected obliquely to side walls 216 and 217 of the junction housing 202 intersect in pairs in the area of a nearby front wall 218 and 218, respectively. 219 of the collection house 202.

In the lower wall 220 of the collection housing an opening 221 is arranged, to which an air supply line (not shown) can be connected.

The nearest connecting ends 207-210 of the connecting ends 207-210, extending from the manifold 202 and 206 extend in an uninterrupted arc 222 away from the longitudinal central plane 211 of the manifold 202 and the connecting ends 207-210 and back and merge with an approximately straight spacer and with a opposite arc 224 to the connection ends 207 and 210. The tubes 204 and 205 extending at a distance from the connection ends 207-210 from the junction housing extend in an uninterrupted arc 225 away from the longitudinal central plane 211 of the junction housing 202 and back towards it and at the same time towards the connection ends straight intermediate piece 226 with a counter-arc 227 over to its connecting ends 208 and 209. All tubes 203-206 are curved hanging slightly downwards, the curvature of the nearest connecting ends 207 ~ 210 lying, from the collecting housing 202 extending tubes 203 and 206 being stronger than the curvature of the other two tubes 204 and 205.

The connection ends 207-210 are each provided with a flange 228 resp. 229 and for stiffening connected to each other by means of bridges 230. The suction tubes 203 and 204 resp. 205 and 206 are connected to each other by means of walls 231 lying in mold surfaces in order to stiffen and provide a design suitable for casting.

By the opposite pipes 203 and 206 and 206, respectively, extending from the collection housing 202 and 204 and 205 are not connected to 7802907-1, 0 cohesive housing in pairs coaxially but obliquely with respect to each other, an illegal, mutual influence of the oscillations by direct pressure wave transition between the tubes 203-206 is avoided and a better filling of a suction pipe 201 is obtained. . The equally long tubes 203-206 with their approximately equal and relatively large, radiatingly favorable radii of curvature further contribute to a good oscillation ratio, so that good power and torque values are obtained with the indentation manifold 201,

Claims (9)

H 7802907-1 P a t e n t k r a v 1. In a suction pipe for 4-6 cylindrical combustion engines of the row type, near a distribution chamber, from approximately in a plane pairwise opposite starting sections start from substantially equally long individual suction pipes, which have curved, intermittent and intermittent sections. The connecting sections extend approximately parallel to each other and approximately perpendicular to the opening sections and the distribution chamber is arranged approximately symmetrically relative to the end sections, characterized in that they are connected on both sides ) individual pipes (5, 6) emanating from the distribution chamber (2) are connected to the two inner connection ends (flange 52), that the individual individual pipes (Z) extending on the connection ends (flange S2) opposite the side of the distribution chamber (Z) 3, 8) are connected to the two outer connection ends (flange 52) and that possibly the two between said individual tubes (3, 5; 6, 8) individual pipes (4, 7) emanating from the distribution chamber (2) are connected to connecting ends lying between the inner and outer connecting ends, at least the intermediate sections (12, 13) of the one connected to the inner connecting ends (flanges 52) individual pipes (5, 6) starting from the distribution chamber (Z) are first curved away from the connection ends and then towards them. Intake manifold according to claim 1, as a single casting, characterized in that each of a first part (23, 24, 25, 26; 27, 28) of the intermediate sections (10 - 15) of the individual pipes (3 - 8) in each pair lies approximately in a plane (29), which with the plane (22) of the end sections (16 - 21) encloses an angle (CX) open in the direction of the connection end (flange S2), which with increasing distance from the outlet of the pairs (5, 6, 4, 7, 3, 8) of the individual pipes from the end of the distribution chamber (Z) lying on the side of the connection ends (flange S2) is larger and to each a second part (30, 31 , 32, 33, 34, 35) for the intermediate sections (10 - 15) for the individual 'pipes (3 - 8) lie mainly in a plane (36) which encloses one horizontally open from the distribution chamber (2) angle (b) with the connecting lines for the center of the connection ends (flange S2), as at the inner ends. the closing ends are the smallest and at the outer ones the largest. A suction pipe according to claim 2, characterized in that the distribution chamber (2) has an oblique bottom (44) facing the end sections (16 - 21), which is approximately parallel to a plane (29), in which the first the part (25, 26) of the intermediate sections (12, 13), for the individual pipe connected to the inner end sections (18, 19). 1 Intake manifold according to Claim 2 or 3, characterized in that the individual suction pipes (3 - 8) in the region of the molded parts are at least partially connected to one another by means of walls (58, 59, 60, 65). 5. Intake manifolds according to one of Claims 2 to 4, characterized in that the individual pipes (3 to 8) have approximately circular cross-sections internally and externally in areas of the Avilka'd are eccentrically relative to mold surfaces, batches (67, 68) which extend tangentially to the otherwise circular outer contour approximately in the design direction at the mold part surfaces and a wall (65) arranged there, respectively. Intake manifold according to claim 4, characterized in that the curved intermediate section (12, 13) of the individual pipes (5, 6), which extends on the side of the connection end (flange 52) from the distribution chamber (Z), the distribution chamber (2) with its center area each touches and has a common wall section (57), that between the distribution chamber (2) and the first parts (25, 26) of these intermediate sections (12, 13) each a wall (S8) lying in a mold part surface extends approximately parallel to the inclined bottom (44) of the distribution chamber (2) and that these walls (58) opposite sides of the individual pipes (3 - 8) * in the area of their initial sections lie in a mold surface and with these walls (58) each form a wedge-shaped niche (66). Intake manifold according to claim 6, characterized in that one of the individual suction pipes (3 - 5 and 6 - 8) extending transversely connecting flange (61) extends approximately in a plane with the inclined bottom (44) of the distribution chamber (2). ) and together with approximately parallel walls (S8) again mold surface and that the flange (61) in the area of an end opening (46) for the distribution chamber (2) from its main plane out on both sides to approximately the middle of the opening (46). Single-manifold branch pipe according to claim 6 or 7, characterized in that the individual pipes (3 - 5 and 6 - 8) p, 7802907-1 from the flange (61) in the direction of the distribution chamber (Z) are connected to each other and in direction of the end sections (16 - 24) with the exception of their fl interconnected flanges (52) are separated from each other. W A UEHïH2SET @ HTÖT according to any one of the preceding claims, characterized in that the individual pipes (3 - 8] in the area of their connection ends (the flanges 52) on the outer side facing the distribution chamber (2) each have a longitudinal bead (69), which approximately extends from the connection end (flange 52) to the transition to the curved center section (10 - 15) and the through hole (S3) sloping towards the connection end is perforated for receiving an injection nozzle.