阅读说明：本技术 一种高强度紧凑型气缸体 (High-strength compact cylinder body ) 是由 李壮 王鹏程 *** 陈彪 于 2019-10-18 设计创作，主要内容包括：本发明属于内燃机领域,具体地说是一种高强度紧凑型气缸体,包括气缸体本体,从气缸体本体侧面的顶部向下竖向设置在气缸体本体外壁上的竖向筋条,横向设置在气缸体本体侧面外壁上的横向筋条,竖向筋条的内部设置有曲轴箱通风通道,曲轴箱通风通道的下端连通发动机的曲轴箱,曲轴箱通风通道向上延伸到气缸体本体的顶部,曲轴箱的混合气通过曲轴箱通风通道导入到油气分离系统。解决现有气缸体设计强度差、体积大,使整机外形尺寸紧凑,可承受更高的爆压。(The invention belongs to the field of internal combustion engines, and particularly relates to a high-strength compact cylinder block which comprises a cylinder block body, vertical ribs and transverse ribs, wherein the vertical ribs are vertically arranged on the outer wall of the cylinder block body from the top of the side surface of the cylinder block body to the bottom, the transverse ribs are transversely arranged on the outer wall of the side surface of the cylinder block body, a crankcase ventilation channel is arranged inside each vertical rib, the lower end of the crankcase ventilation channel is communicated with a crankcase of an engine, the crankcase ventilation channel extends upwards to the top of the cylinder block body, and mixed gas of the crankcase is guided into an oil-gas separation system through. 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.)

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).

Technical Field

The invention belongs to the field of internal combustion engines, and particularly relates to a high-strength compact cylinder body.

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.

Disclosure of Invention

The invention provides a high-strength compact cylinder block, which solves the problems of poor design strength and large volume of the existing cylinder block, and ensures that the overall dimension of the whole cylinder block is compact and can bear higher detonation pressure.

The technical scheme of the invention is 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. According to the invention, the crankcase ventilation channel is integrated in the vertical ribs, and the vertical ribs can play a role of reinforcing ribs and can also serve as a channel for crankcase waste gas, so that the weight of the reinforcing ribs is reduced, the structure is simple, the volume of a crankcase ventilation system is reduced, and the engine is more compact and realizes light weight; 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 cylinder block adopts a Top-Down cooling mode, the Top of the cylinder block body is provided with a cooling liquid inlet, the side wall of the cylinder block body is also provided with a cooling liquid outlet which is lower than the cooling liquid inlet, the cooling liquid inlet and the cooling liquid outlet are connected through a cooling water jacket in the cylinder block body, a Top-Down reverse cooling mode is adopted, cooling water flows from Top to bottom, the cylinder head is cooled firstly, then the cylinder block is cooled, the cylinder head is cooled by the cooling liquid, the cooling liquid enters the cylinder head as low as possible on the basis of reasonable water inlet and outlet temperature difference of the whole machine, and the cooling effect of core parts such as a nose bridge area of the cylinder head is guaranteed.

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 invention has the beneficial effects 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 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 according to the present invention 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 to the specific embodiments.