FI107753B - Internal combustion engine - Google Patents

Abstract

An internal combustion engine of the known type has an assembly support incorporating a lubricant oil pump and a coolant pump. Both pumps with their respective housings are mounted in apertures in the assembly support and sealed off from those apertures. A cover is then placed over the entire assembly support. The purpose of the invention is to produce an internal combustion engine in which the ancillary assemblies are easy to inspect and accessible. This is done by mounting the coolant pump (12) and oil pump (11) externally on the assembly support (10) and by providing at least one oil distributor channel (18) and coolant distributor channel (23) within the assembly support (10). This design ensures easy access to the ancillary assemblies.

Description

internal combustion engine

The invention relates to an internal combustion engine having a crankcase having a rotatable crankshaft bearing at least one connecting rod bearing a piston which can be moved in a cylinder covered by a cylinder head, wherein the the oil pump.

Such an internal combustion engine is known from DE-A-4 214 799. This internal combustion engine has an auxiliary housing fitted with a butter-10 oil pump and a water pump. The water pump and its housing are inserted therein and sealed therein. The suction and pressure lines likewise placed in the subframe must be suitably connected to the corresponding connections of the water pump and sealed towards the environment. The oil pump is likewise secured inside the subframe, so that service or repair must first be done by removing the cover by opening the subframe before accessing the oil pump. The same goes for a water pump.

The object of the invention is to make an internal combustion engine machine, the auxiliaries of which are clearly and easily accessible.

The object of the invention is achieved by a combustion engine machine according to claim 1.

. . Preferred embodiments of the invention are the subject of the dependent claims.

• · ·: · 'The objective is solved by placing the water pump and the oil pump outside the subframe and at least one oil channel T' and coolant channel within the subframe. This design provides easy access to these auxiliary devices to reduce installation effort for maintenance or repair. Both pumps are mounted on the subframe with their drive gears inserted through the openings inside the subframe, where the drive gearwheels contact the drive gear mounted on the crank • •. · ... shaft directly or via the intermediate gear wheel. need maintenance and therefore do not need to be accessed so that they can be reasonably embedded in the subframe.

In a preferred embodiment of the invention, an external suction line is connected to the oil pump, which terminates in an oil suction pipe connection. The oil sump may be an external oil sump formed by a sealed container or preferably an oil sump mounted directly below the crank-35 chamber on an internal combustion engine. Thanks to this design, the entire oil suction section • · 2 of the internal combustion engine is very easily accessible. In an advantageous embodiment of the invention, the oil pump has an external pressure connection associated with a bypass line heat exchanger and an oil filter, wherein the oil filter is connected by a line to a subframe suction pipe in fluid communication with the oil channel. The oil heat exchanger and oil filter can thus be conveniently located at a convenient location independent of the internal combustion engine. This is advantageous, for example, in internal combustion engine machines, which are used as motors for locomotives, because the oil filter and the oil heat exchanger are then placed in the locomotive so that these components can be easily accessed and cooled. The external pressure-1o connection allows the interconnectors to be connected and installed without problems.

In a preferred embodiment of the invention, the oil channel has connections to the oil lines leading to the main oil channels of the internal combustion engine. Naturally, the oil channel is also provided with a connection through which the cooled and purified oil is fed into the oil channel. By means of this oil channel 15 in the subframe, a fixed connection for the external lines to the combustion engine is thus created. The oil lines connected to the oil channel and leading to the main oil channels are also screwed to the outside of the internal combustion engine. This solution is offered because the main oil channels are located in hollow camshafts. At the junctions, by means of which the oil lines of the internal combustion engine are placed in the main oil-20 channel transition space, the branches through which the oil is supplied to I. are branched; to the turbochargers of an internal combustion engine.

In a preferred embodiment of the invention at least one oil separation space is connected to the subframe. This oil separation space engages at least one T ': crankcase opening directly into the crankcase interior.

In a preferred embodiment of the invention, in an oil separation line: # Γ: there is at least one connection for an oil separation line. This line leads to an equilibration chamber where the oil contained in and transported by the gases may be · · ... deposited. The separated oil is then recycled in a suitable manner to the internal combustion engine. · · ·. machine oil cycle.

* · * 30 In a preferred embodiment of the invention, the subframe is provided with a vibration damping housing connected to a *. Preferably, this vibration damping housing is disposed centrally on the longitudinal extension of the crankshaft so that the vibration damper can be mounted directly on the crankshaft.

In a preferred embodiment of the invention, the water pump has a pressure connection which is connected to the main channel of an internal combustion engine. This design, in turn, provides a structurally advantageous solution that allows for a simple removal of the water pump.

In a preferred embodiment of the invention, the coolant channel has at least one orifice associated with a conduit air inlet for the charge air cooler. The supply of coolant to the coolant passage is also effected via this pipe connection, which has a second opening for this purpose, to which a coolant supply line can be connected.

In a preferred embodiment of the invention, the auxiliary body is provided with a coolant collecting conduit having at least one inlet and a connection portion with the charge air cooler opening. This connecting part has a second connection point corresponding to the pipe connection, which is also connected to another cooling system. Through this junction, the coolant is passed through the cooling system.

In a preferred embodiment of the invention, the subframe is provided with a composite body adjacent to at least a charge air cooler. In another form, the interconnecting conduit is connected to the composite body at least between the charge air cooler and the charge air line of the internal combustion engine so that this component fulfills at least two functions.

In a preferred embodiment of the invention, the main oil channel. . The 20 passes along the cylinder row of the internal combustion engine inside the hollow camshaft • · l. This design eliminates the need for any other longitudinal axis wires or duct for the internal combustion engine. Placing and designing the crankcase of an internal combustion engine with additional wires and / or ducting inside existing * · '' walls requires additional structural and manufacturing technical effort. Because the main oil channel passes inside the hollow camshaft, these problems are overcome because at least the four-stroke combustion engine has a camshaft that extends over the entire length of the internal combustion engine. For reasons of strength, the camshaft also does not need to be solid so that it can be made hollow without substantial structural stress, so that the main oil channel thus passing through the camshaft 30 is of sufficient diameter for the oil gauge therethrough.

In a preferred embodiment of the invention, the oil enters the main oil channel at the end of the camshaft, and the inlet side is the drive camshaft. the side opposite the page. This provides a structurally simple solution for oil feed to the main oil passage 35, since this end of the camshaft is free and can be fitted without problems. Connector • · 4 may consist of a sealed and sealed corner piece on the outside of the crankcase of the internal combustion engine that is connected to the oil pump of the internal combustion engine by means of corresponding interconnectors. Because the camshaft end region will, in any case, have a bearing location, the oil supply from the corner piece to the main oil-5 channel may be effected by simply connecting the corner piece to the crankcase at the bearing position. Adequate sealing of the inlet is done by the bearing neck itself.

In a preferred embodiment of the invention, the oil channels are branched from the main oil channel, the branches being located at the positions of the camshaft bearing 10. This shape provides a particularly advantageous solution because the individual bearing positions must in any case be lubricated and oil must be supplied and distributed at these points, respectively. In a preferred embodiment of the invention, the bearing surface of the camshaft bearing is provided with a machined annular groove which is connected via at least one bore to the main oil channel. Drilling is thus essentially the only additional work required to introduce oil from the main oil channel into the existing ring groove and from there to other components.

In a preferred embodiment of the invention, one oil channel is provided for this purpose directly in the crankshaft bearing. Because of the stiffness between the camshaft bearing surface and the crankshaft nearest bearing surface. 20 usually anyway crankcase wall, there can be trouble-free • · j. . · * Place the oil duct.

In a preferred embodiment of the invention, the camshaft bearing surface further branches into an oil channel introduced into the corresponding area of the cylinder head * · ** ·. All the oil channels are thus connected to the main oil channel in a structurally simple manner. In addition, the two oil ducts illuminated above may branch into other conduits leading to other lubricated or cooled components. For example, the oil duct may have a branch at the crankshaft bearing that injects oil against the piston head • · ..... to cool the piston. At the same time, the oil duct can exit into the corresponding area of the cylinder head * 1 * 30, which leads to the roller pushers of the push rods and the injection pump elements.

: In a preferred embodiment of the invention, the camshaft is · · · formed by blocks. This allows for a rational manufacturing of the camshaft and the main oil channel embedded in it, since · · · 35 engine units can be assembled into a number of cylinders. In another form, these blocks are screwed to each other or connected to one another by means of a hydraulically pressed connection. Therefore, the connection by means of a compression joint utilizes an annular space in which the pressurized fluid is compressed and causes expansion of the surrounding wall area. This expansion results in a strong joint between the two sections.

In a preferred embodiment of the invention, the oil pump is secured to the crankcase front face on the inlet main oil channel and the oil sump ends at the oil sump. This design eliminates the need to otherwise penetrate the crankcase and allows the oil pump to be secured to the crankcase face or composite body for easy access to maintenance work. In addition, it is easily possible to connect another external oil pump by means of the corresponding directional change valves, which takes care of pumping the lubricating oil, for example in the event of failure of the second pump.

In a preferred embodiment of the invention, the oil sump has an extension for connecting the oil suction line. This allows the suction line to be easily attached to the outside of the oil sump 15 and can be easily replaced for maintenance or repair without the need for other removal work. The extension is then provided in another form with an inlet opening covered by an oil strainer.

In a preferred embodiment of the invention, the oil suction line is formed, at least in part, with a crankcase and / or an oil sump v 20 and / or an oil pump supporting subframe. The lubrication system once and for all sits here as no other wires are needed in this area.

In a preferred embodiment of the invention, a pressure relief valve and a pressure relief valve (control and relief valve) are coupled to the oil pump, the pressure relief valve and the pressure relief valve forming an integral unit. Thanks to this design, they are further susceptible to interference, and the positioning of these components on the front of the internal combustion engine makes it easy to replace them without the need for laborious removal work.

In a preferred embodiment of the invention, the pressure limiting. the valve and the pressure control valve have a common housing. This reduces the number of parts *** 30.

Other preferred embodiments of the invention are set forth in the description of the drawings, which further illustrates an embodiment shown in the figures of the invention.

• ·

Fig. 1 shows a side view of an internal combustion engine according to the invention, Fig. 2 shows a partial side view of the front side of Fig. 1, Fig. 3 shows a cross-section of a subframe mounted in the end face according to Figs. Fig. 6 shows a cross-sectional view of the composite body, Fig. 7 shows a partial view of the camshaft and main oil channel, and Fig. 8 shows a partial view of the oil sump and its extension.

In particular, the internal combustion engine of Figure 1 is a 16-cylinder 10 V engine with four gas exchange valves per cylinder and a direct injection in the center. In addition, the internal combustion engine is exhausted and the charge air cooled. An internal combustion engine is used, for example, to drive a locomotive.

The internal combustion engine has a crankcase 1 which is closed from below by an oil sump 2. Two crowns of cylinders each having eight cylinders are disposed on top of the crankcase 1, each of which is joined by an exhaust supercharger 3a, 3b. Each exhaust supercharger has 3a, 3b has a turbine 4 and a supercharger 5. The turbine 4 is connected to the exhaust manifold line 6 associated with each row of cylinders. The exhaust manifold line 6, in turn, consists of 20 separate parts, each part connected to a single row of cylinders. The turbine 4 I.: * driven by a supercharger 5 compresses the supplied combustion air and transfers its supercharged air to the cooler 7a, 7b. The charge air coolers 7a, 7b have openings which terminate in a common connecting duct 8 connected to the composite body 9, which at the same time carries or screws the charge air coolers 7a, 7b.

• · • * ·· 25 The connecting duct 8 terminates in a charge air conduit located in the space between the cylinder rows: T: V. A subframe 10 is mounted underneath the composite body 9. Outside this subframe 10 is an oil pump 11 and a water pump 12. A suction line 13 is installed outside the oil pump 11, ···, at the sump pipe connection 14 of the oil sump. * · [30 valve (pressure control valve and pressure relief valve) 15, which is easily accessible in front of the oil pump 11. In addition, the oil pump 11 has an external pressure connector 16, which is connected to a by-pass oil-heat exchanger and an oil filter. These components can thus be conveniently positioned around the internal combustion engine. Refrigerated and Refined Oil • ♦ 35 ends through a conduit into the inlet pipe 17 of the subframe 10. The inlet pipe 17 is connected to the oil duct 18, which has connections 19a, 19b on both sides. Connected to these 7 connections 19a, 19b are oil lines 20a, 29b, which lead to the main oil channels of the oil. The connection between the oil lines 20a, 20b and the main oil channels, which are generally passed through hollow camshafts, is effected by means of couplings 21a, 21b.

The water pump 12 draws from the water reservoir coolant, which is otherwise antifreeze water, and possibly subsequently flows through a lubricating oil heat exchanger. The water pump 12 pumps the coolant to the pump by means of a screwed pressure line 22 which is connected to the duct of the crankcase 1. From the duct, coolant flows directly into the cooling spaces of the cylinders and 10 of them into the cooling spaces of the cylinder heads. Of these, the coolant is controlled by your geodesic! at the highest point to the coolant assembly line, which in turn leads to the front face of the coolant internal combustion engine shown in FIG. From there, the coolant ends up either directly or, if necessary, through at least one heat exchanger into the charge air cooler 7a, 7b and from there back to the water tank 15. In the charge air cooler 7a, 7b, the coolant ends from a passage 23 screwed into the conduit 24. One of the conduits 24 also has an opening 25 which, as previously described, is associated with the circulation of the coolant. The coolant is discharged from the charge air coolers 7a, 7b on the one hand and through the connecting portions 26 to the coolant collection through the subframe 10. . 20 through channel 27, on the one hand, and through connection 28, which is also connected to another cooling system. Through this connection 28, the coolant is returned to the other cooling system. By means of the charge air and the coolant flow rate shown in the charge air cooler 7a, 7b, the so-called * · ** principle of countercurrent cooling is implemented.

25 A separate composite body 9 is attached directly above the subframe 10 directly to the charge air line. The combination body 9 is provided with • bracket holes 29 through which the fixing screws can be inserted and screwed into the charge air line. This charge air line ends with a connecting channel 8, terminating ♦ · ... at two junctions 30a, 30b. These charge air line connections 30a, 30b have fastening flanges 31a, 31b to which the charge air coolers 7a, 7b can be attached.

Above the composite body 9 or the supercharger air cooler 7a, 7b are, in turn, attached to separate brackets 32a, 32b the exhaust gas compressors 3a, 3b. The brackets 32a, 32b, in turn, are screwed to the front side of the internal combustion engine.

Auxiliary body 10 is further connected to a vibration damper housing 33. 35 This vibration damper housing 33 includes a vibration damper mounted directly on the crankshaft of the internal combustion engine. An oscillation damper housing • 33 is associated with a gear housing 34 housing gear wheels driving an oil pump 11 and a water pump 12, both driven by a gear mounted on the crankshaft in front of the vibration damper.

Finally, the subframe 10 also has, on the side, oil separating spaces which are behind the connecting portions 26 in Figure 1, part 1. Both oil separation spaces are directly connected to the crankcase 1 of the internal combustion engine and have connections to which one oil separation line can be connected at any one time. The oil separating lines lead to the settling chambers, where the oil in the gases and entrained with them can settle, which is then recycled appropriately back into the oil circulation of the internal combustion engine 10.

Figure 7 is a sectional view of a crankcase 101 according to the invention. In particular, the internal combustion engine is a 16-cylinder V-diesel engine, each V line of the internal combustion engine having two camshafts 102.

The camshaft 102 has bearing locations 103 which are mounted on bearing housings 105 of crankcase 101 by inserting bearing strips 104. The bearing supports 105 are screwed with bearing covers 106, whereby the covers 107 and the crankshaft directly connected to the supports without the shoulder are provided with lids 107 which close out the camshaft space 108.

The camshaft 102 is provided with a main oil channel 109 through which v <20 lubricating and cooling oil is guided and distributed along the longitudinal axis i. Of the internal combustion engine. To this end, a seal • · · • * '111 is attached to the end face of the crankcase 101 by inserting a corner piece 110, whereby the corner piece 110 is disposed longitudinally and as an extension of the main oil channel 109. Corner piece 110 has a fixed T '; a pipe section 112 through which the oil pumped by the oil pump passes to · ·: · · · 25 the corner piece 110 and further to the main oil channel 109. The transition from the angle piece to the main oil channel 109 is not otherwise sealed. The sealing at this point is carried out by the bearing support 105 and the camshaft bearing acting on the bearing tabs 104 and bearing cover 106. ···. place 103.

The oil pumped through the main oil channel 109 ends up in the camshaft 102 through the bores 113 machined into the annular grooves 114 which are machined to either the camshaft bearing locations 103 or the bearing strips 104. The oil thus flows through these bores 113 from the main oil channel into shaft bearing locations 103, on the one hand, to unexplored oil channels 35, from which it is further guided to individual crankshaft bearings and corresponding cylinder head areas.

• · 9

Otherwise, the camshaft 102 of the embodiment consists of blocks, the blocks being secured to each other by screws 115. Between the two bearings 103 of the camshaft, there are otherwise two cam 117a, 116b using gas exchange valves and a cam 117 using an injection pump element.

The oil pan 118 shown in Figure 8 has an extension 119 to which at least one oil pump suction line is attached. The extension 119 then has an inlet 121 in the oil sump 118 covered by the oil screen 120.

• • • • • * 1 • • • • • • • • • • • • • • • • •••••••••••••••• * * · · • · * * · · • * 4t • · «

Claims (27)

An internal combustion engine with a crankcase in which a crankshaft is stored rotating, to which the crankshaft has at least one crankshaft carrying a piston, which piston is movable in a cylinder tube covered by a cylinder cover, wherein an auxiliary body ( 10) is arranged on a front side facing away from the flywheel side of the internal combustion engine, which auxiliary body carries a water pump (12) and an oil pump (11), characterized in that the water pump (12) and the oil pump (11) are arranged externally to the auxiliary body (10). such that, when servicing the pumps (11, 12), they reach directly, that the drive gears of the pumps (11, 12) are inserted inside the auxiliary body through openings and that at least one oil channel (18) and a coolant channel (23) are provided in the auxiliary body (10). An internal combustion engine according to claim 1, characterized in that an external suction line (13), which opens in a suction line connection (14, 119) to an oil sump (2, 118), is connected to the oil pump (11). 15 An internal combustion engine according to claim 1 or 2, characterized in that the oil pump (11) has an external pressure connection (16) which, through a bypass line, connects to an oil heat exchanger which is passed and an oil filter, whereby the oil filter is connected to a suction pipe. (17) on the auxiliary body (10). 20 An internal combustion engine according to any of the preceding claims, characterized in that the oil channel (18) has connections (19a, 19b) j for oil lines (20a, 112, 20b, 112) leading to the combustion engine's housing: **: fudge oil channels (109). ·: ··· 5. Internal combustion engine according to any of the preceding claims, characterized in that at least one oil separation room is integrated in *. ·: ·. auxiliary body (10). • · · An internal combustion engine as claimed in any preceding claim,. characterized in that the oil separation room has at least one connection for an oil separation line. 30 Internal combustion engine according to any of the preceding claims, characterized in that a vibration damper cap (33) is integrated in. * ··. the auxiliary frame. Internal combustion engine according to any of the preceding claims, characterized in that the water pump (12) is connected to a pressure line (22) which is connected to a main duct in the internal combustion engine. An internal combustion engine according to any of the preceding claims, characterized in that the coolant duct (23) has at least one opening which is connected by an inlet port (24) to an inlet opening of a charging air cooler. An internal combustion engine according to any one of the preceding claims, characterized by a cooled coolant collection duct (27) with at least one inlet opening (10) arranged in the auxiliary body (10), which duct is connected to a charge air cooler orifice through a assembly part (26). Combustion engine according to any of the preceding claims, characterized in that adjacent auxiliary body (10) is a combination body (9) which carries at least one charge air cooler. An internal combustion engine according to any of the preceding claims, characterized in that at least one connecting duct (8) between the charge air coolers (7a, 7b) and the internal combustion engine is integrated in the combination body (9). Combustion engine according to any of the preceding claims, characterized in that the gas exchange valves arranged in the cylinder cover can be used with the aid of shock bars and levers with the camshaft camshafts, whereby an oil system is used, in which oil is passed along lines and channels to parts of the combustion engine. which are lubricated and cooled, and that main oil. . the duct (109) runs along a cylinder row of the internal combustion engine in a camshaft (102) made hollow. 14. An internal combustion engine as claimed in any preceding claim, characterized in that the oil enters the main oil channel (109) at the end of the camshaft (102) and that the input side is the opposite side to the camshaft drive side. Combustion engine according to any of the preceding claims, characterized in that the oil channels are branched from the main oil channel (109), the branches being arranged at the locations (103) of the camshaft bearings. "16. An internal combustion engine according to any of the preceding claims, characterized in that a bearing block (114) is s." S incorporated in the camshaft bearing surface (103), which starts at least one bore (113) in connection with the main oil channel (109). ). • · 35 An internal combustion engine according to any of the preceding claims, characterized in that an oil channel is drawn directly to a crankshaft bearing. 15 18. An internal combustion engine as claimed in any preceding claim, characterized by a degraded oil channel being drawn to the corresponding area in the cylinder cover. An internal combustion engine according to any of the preceding claims, characterized in that the camshaft (102) is formed of segments. An internal combustion engine according to any of the preceding claims, characterized in that the segments are screwed together. An internal combustion engine according to any of the preceding claims, characterized in that the segments are connected to each other by a hydraulically fitted press connection. An internal combustion engine according to any of the preceding claims, characterized in that the oil pump (11) is attached to the front side of the crankcase (1, 101) and / or to the auxiliary body (10) supporting the oil pump (11) to the oil input side of the main oil duct (109) and the oil suction line (13) opens into the oil sump (2, 118). An internal combustion engine according to any of the preceding claims, characterized in that the oil sump (2, 118) has an extension (14, 119) for connecting the oil suction pipe (13). An internal combustion engine according to any one of the preceding claims, characterized in that the extension (14, 119) has one with an oil screen. . (120) provided entrance opening (121) in the oil sump (2, 118). 25. An internal combustion engine according to any of the preceding claims, characterized in that the oil suction pipe (13) is at least partially formed as a piece together with the crankcase (1, 101) and / or the oil sump (2, '* * 25 118). and / or the combination body (9) which supports the oil pump (11), and that it acts as a support for the oil pump (11). T: An internal combustion engine according to any of the preceding claims, characterized in that a pressure limiting valve (15) and a pressure regulating valve (15) are coupled to the oil pump (11), the pressure limiting valve (15) and the pressure control valve (15) forming the construction unit. Combustion engine according to any of the preceding claims, characterized in that the pressure limiting valve (15) and the pressure control valve (15) have a common body. • ·