CN211549846U

CN211549846U - High-strength compact cylinder body

Info

Publication number: CN211549846U
Application number: CN201921753949.3U
Authority: CN
Inventors: 李壮; 王鹏程; ***; 陈彪
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Machinery Co Ltd
Priority date: 2019-10-18
Filing date: 2019-10-18
Publication date: 2020-09-22
Anticipated expiration: 2029-10-18

Abstract

The utility model belongs to the internal-combustion engine field, specifically speaking are high strength compact cylinder block, including the cylinder block body, from the vertical rib of the downward vertical setting on cylinder block body outer wall in top of cylinder block body side, transversely set up the horizontal rib on cylinder block body side outer wall, the inside of vertical rib is provided with crankcase ventilation passageway, the crankcase of crankcase ventilation passageway's lower extreme intercommunication engine, the crankcase ventilation passageway upwards extends to the top of cylinder block body, the mist of crankcase passes through the leading-in oil-gas separation system of crankcase ventilation passageway. The cylinder body has the advantages of solving the problems of poor design strength, large volume, compact overall dimension and higher burst pressure bearing of the existing cylinder body.

Description

High-strength compact cylinder body

Technical Field

The utility model belongs to the internal-combustion engine field, specifically speaking are high strength compact cylinder block.

Background

In the working process of the engine, the phenomenon of air leakage of a piston ring exists, and part of combustible mixed gas and waste gas are leaked into a crankcase through the piston ring, so that engine oil becomes thin, the performance is deteriorated, and lubricating oil is deteriorated; in addition, the blow-by of combustible mixture and exhaust gas into the crankcase increases the pressure in the crankcase, and oil leaks out from the crankshaft oil seal, the crankcase gasket, and the like. Therefore, crankcase ventilation systems have been developed, in which an oil-gas separator is provided to separate the exhaust gas, and the oil is settled and returned to the crankcase, and the exhaust gas is burned again in the combustion chamber.

For example, in the crankcase ventilation structure of the built-in channel of the cylinder block disclosed in chinese patent CN101575996A, a ventilation opening structure is arranged in all cylinder crankcases in the cylinder block, ventilation openings are arranged at the upper part of each cylinder crankcase of the cylinder block near the main bearing wall, all the ventilation openings are connected with the main channel at the upper part of the cylinder block through the channel with the upward side surface of the cylinder block, and the main channel is provided with a general ventilation opening to be connected with the external crankcase ventilation system component. The structure can ensure that the crankcase is ventilated smoothly, the pressure in the crankcase is stable, the flowing speed of gas in the crankcase and the ventilation channel is uniform, the flowing speed is low, the oil quantity taken away by the gas is less, the structure is reasonable, the shape is optimized, and the requirements of modern heavy diesel engines on the ventilation system of the crankcase are completely met.

However, the crankcase ventilation system is arranged inside the engine body, so that the structure of the cylinder body is complex, the volume of the cylinder body is large, the external reinforcing structure of the cylinder body is few, the strength is poor, and the increasingly severe strengthening requirements of the engine cannot be met due to the fact that the cylinder body cannot bear high detonation pressure.

SUMMERY OF THE UTILITY MODEL

The utility model provides a high strength compact cylinder block solves current cylinder block design intensity poor, bulky problem, makes complete machine overall dimension compact, can bear higher detonation pressure.

The technical scheme of the utility model as follows:

the utility model provides a high strength compact cylinder block, includes the cylinder block body, follows the top vertical setting downwards of cylinder block body side is in vertical rib on the cylinder block body outer wall transversely sets up horizontal rib on the cylinder block body side outer wall, the inside of vertical rib is provided with crankcase ventilation passageway, the crankcase of crankcase ventilation passageway's lower extreme intercommunication engine, crankcase ventilation passageway upwards extends to the top of cylinder block body, and the gas mixture of crankcase passes through the leading-in oil-gas separation system of crankcase ventilation passageway. The crankcase ventilation channel is integrated in the vertical ribs, the vertical ribs can play the role of reinforcing ribs and can also serve as channels for crankcase waste gas, the weight of the reinforcing ribs is reduced, the structure is simple, the volume of a crankcase ventilation system is reduced, an engine is more compact, and the light weight is realized; the side wall of the cylinder body forms a frame structure by adopting the combination of transverse ribs and longitudinal ribs, the strength of the cylinder body is high, the engine can bear higher combustion detonation pressure during working, the detonation pressure can reach 210bar, the durability of the engine is good, the combustion efficiency of the whole engine can be improved, and the fuel consumption is reduced.

Preferably, the horizontal rib sets up the vertical rib outside, the inside machine oil passageway that is provided with of horizontal rib, horizontal rib can play the strengthening rib effect, can also act as lubricating oil passageway of lubricating system, makes cylinder block body overall design simpler for engine structure is compacter.

Preferably, the utility model discloses a from Top to bottom cooling method, the Top of cylinder block body is provided with the coolant liquid entry, still be provided with on the lateral wall of cylinder block body and highly be less than the coolant liquid export of coolant liquid entry, the coolant liquid entry with the coolant liquid export passes through the inside cooling jacket of cylinder block body is connected, adopts the reverse cooling method of Top-Down, and the cooling water Down flows from last, cools off the cylinder head earlier, and the cylinder head is cooled off to the back, and the cylinder head is cooled off earlier to the coolant liquid, makes to get into the cylinder head coolant liquid as low as possible under the business turn over water difference in temperature basis of reasonable complete machine, ensures the cooling effect at core positions such as cylinder head nose bridge district.

Preferably, the vertical ribs and the transverse ribs are vertically intersected, the structural design is simple, and the strength is good.

Preferably, the number of the vertical ribs is more than 2, and a plurality of vertical ribs can be arranged according to the number of the cylinders of the engine, so that the connection strength of the frame structure is enhanced, and the explosion pressure of the engine is further improved.

Preferably, the side wall of the cylinder block body is provided with an integrated mounting seat and a mounting hole at one side of the cooling liquid outlet, the mounting holes are arranged on the vertical ribs, the coolant outlet is required to be communicated with a component of an engine cooling system, the integrated mounting seat is used for mounting an integrated accessory structure on an engine, parts such as an oil cooler, a rotor filter, a water pump shell or a thermostat and the like on the engine are often required to be designed into a whole in a highly integrated manner and are required to be mounted on a mounting seat in an integrated manner, the mounting strength requirement is high, set up the mount pad near vertical rib structure, the mount pad also is the rib structure, the mount pad with vertical rib also forms frame rack structure, in addition set up the mounting hole on the vertical rib, be favorable to improving the installation stability of integrated annex, integrated mount pad also acts as additional strengthening simultaneously and effectively strengthens organism structure.

The utility model has the advantages that:

1. the crankcase ventilation channel is integrated in the vertical ribs, the vertical ribs not only have the function of reinforcing ribs, but also can serve as a channel for crankcase waste gas, the structure is simple, the weight of the reinforcing ribs is light, the size of a crankcase ventilation system is reduced, and the engine is more compact and lighter in weight.

2. The side wall of the cylinder body forms a frame structure by adopting the combination of transverse ribs and longitudinal ribs, the strength of the cylinder body is high, the engine can bear higher combustion detonation pressure during working, the durability of the engine is good, the combustion efficiency of the whole engine can be improved, and the fuel consumption is reduced.

3. A Top-Down reverse cooling mode is adopted, cooling water flows downwards from Top to bottom, the cylinder cover is cooled firstly, then the cylinder body is cooled, cooling liquid cools the cylinder cover firstly, the cooling liquid entering the cylinder cover is enabled to be as low as possible on the basis of the water inlet and outlet temperature difference of a reasonable complete machine, and the cooling effect of core parts such as a nose bridge area of the cylinder cover is guaranteed.

4. Utilize vertical rib structure for integrated mount pad presents frame construction, and engine accessories's installation intensity is high, and integrated mount pad also acts as additional strengthening simultaneously and effectively strengthens organism structure.

Drawings

Fig. 1 is a perspective structural view of a high-strength compact cylinder block according to the present invention.

Fig. 2 is a schematic structural diagram of a high-strength compact cylinder block after an integrated accessory is installed.

Fig. 3 is a front view schematically showing the structure of fig. 1.

In the figure: 1-a cylinder body, 101-a cooling liquid inlet, 102-a cooling liquid outlet, 2-vertical ribs, 3-transverse ribs, 4-a crankcase ventilation channel, 5-an integrated mounting seat, 501-a mounting hole, 6-an engine oil cooler, 7-a rotor filter and 8-a water pump shell.

Detailed Description

The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited by the following detailed description.

Example 1:

as shown in fig. 1, a high-strength compact cylinder block comprises a cylinder block body 1, vertical ribs 2 vertically arranged on the outer wall of the cylinder block body 1 from the top of the side surface of the cylinder block body 1 to the bottom, and transverse ribs 3 transversely arranged on the outer wall of the side surface of the cylinder block body 1, wherein a crankcase ventilation channel 4 is arranged inside the vertical ribs 2, the lower end of the crankcase ventilation channel 4 is communicated with a crankcase of an engine, and the crankcase ventilation channel 4 extends upwards to the top of the cylinder block body 1.

The mixed gas of crankcase in this embodiment passes through crankcase ventilation passageway 4 and the passageway intercommunication on the engine cylinder head, finally arrives oil-gas separation system, and vertical rib 2 and the crisscross setting of horizontal rib 3 make cylinder side wall form frame structure, and the intensity of cylinder block is high, can bear higher burning detonation pressure during engine operation.

Example 2:

as shown in fig. 1 to 3, the present embodiment is an engine body structure of an in-line six-cylinder engine, and the high-strength compact cylinder block described in the present embodiment includes a cylinder block body 1, vertical ribs 2 vertically disposed on an outer wall of the cylinder block body 1 from a top of a side surface of the cylinder block body 1 to a bottom, and the number of the vertical ribs 2 is 5 when viewed from any one of an intake side and an exhaust side, that is, a vertical rib 2 is disposed at a corresponding position between two cylinder bores; the cylinder body is characterized by further comprising transverse ribs 3 transversely arranged on the outer wall of the side face of the cylinder body 1, wherein the number of the transverse ribs 3 is 1, and the transverse ribs are arranged at the position, close to the lower part, of the cylinder body 1; the inside of vertical rib 2 is provided with crankcase ventilation passageway 4, the lower extreme intercommunication crankcase of crankcase ventilation passageway 4 engine, crankcase ventilation passageway 4 upwards extends to the top of cylinder block body 1.

As shown in fig. 1, the transverse ribs 3 are disposed outside the vertical ribs 2, and an oil passage is disposed inside the transverse ribs 3 and serves as a lubricating oil passage of a lubricating system.

In this embodiment, a Top-Down cooling manner is adopted, the Top of the cylinder block body 1 is provided with a coolant inlet 101, the side wall of the cylinder block body 1 is further provided with a coolant outlet 102 which is lower than the coolant inlet 101, the coolant inlet 101 and the coolant outlet 102 are connected through a cooling water jacket inside the cylinder block body 1, a Top-Down reverse cooling manner is adopted, cooling water flows from Top to bottom, the cylinder head is cooled first, then the cylinder block is cooled, and the cylinder head is cooled first by the cooling liquid.

The vertical ribs 2 and the transverse ribs 3 are vertically intersected.

As shown in fig. 2, this embodiment is applied to an engine with an integrated structure of an oil cooler 6, a rotor filter 7, a water pump housing 8 or a thermostat, an integrated mounting seat 5 and a mounting hole 501 are provided on a side wall of the cylinder block body 1 on a side of the coolant outlet 102, the mounting hole 501 is provided on the vertical rib 2, the integrated mounting seat 5 is used for mounting an integrated accessory structure on the engine, that is, the oil cooler 6, the rotor filter 7, the water pump housing 8 or the thermostat is integrally designed into a whole, the mounting seat and the vertical rib 2 form a frame structure, the mounting hole 501 is provided on the vertical rib 2, which is beneficial to improving the mounting stability of the integrated accessory structure, and meanwhile, the integrated mounting seat 5 also serves as a reinforcing structure to effectively reinforce the engine body structure.

Example 3:

the present embodiment is different from embodiment 2 described above in that the present embodiment is applied to an in-line four-cylinder engine, the number of the vertical ribs 2 on the intake side and the exhaust side of the engine body is 3, and a high-strength compact cylinder block described in the present embodiment is cast from HT250 material.

Claims

1. The utility model provides a high strength compact cylinder block, includes cylinder block body (1), from the vertical setting of the top of cylinder block body (1) side is vertical on vertical rib (2) on the cylinder block body (1) outer wall, transversely sets up horizontal rib (3) on the cylinder block body (1) side outer wall, its characterized in that: the inside of vertical rib (2) is provided with crankcase ventilation passageway (4), the lower extreme intercommunication crankcase of crankcase ventilation passageway (4) engine, crankcase ventilation passageway (4) upwards extend to the top of cylinder block body (1).

2. A high-strength compact cylinder block according to claim 1, characterized in that the transverse beads (3) are disposed outside the vertical beads (2), and oil passages are provided inside the transverse beads (3).

3. A high-strength compact cylinder block according to claim 1 or 2, characterized in that a coolant inlet (101) is provided at the top of the cylinder block body (1), a coolant outlet (102) having a height lower than that of the coolant inlet (101) is further provided on the side wall of the cylinder block body (1), and the coolant inlet (101) and the coolant outlet (102) are connected by a cooling water jacket inside the cylinder block body (1).

4. A high-strength compact cylinder block according to claim 1 or 2, characterized in that the vertical ribs (2) and the transverse ribs (3) intersect perpendicularly.

5. A high-strength compact cylinder block according to claim 1 or 2, characterized in that the number of the vertical ribs (2) is 2 or more.

6. A high-strength compact cylinder block according to claim 3, characterized in that an integrated mount (5) and a mount hole (501) are provided on the side wall of the cylinder block body (1) on the side of the coolant outlet (102), the mount hole (501) being provided on the vertical bead (2).