Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
  • F02F1/00—Cylinders; Cylinder heads 
  • F02F1/02—Cylinders; Cylinder heads  having cooling means
  • F02F1/10—Cylinders; Cylinder heads  having cooling means for liquid cooling
  • F02F1/14—Cylinders with means for directing, guiding or distributing liquid stream

Definitions

• the present disclosure generally relates to an engine, more particularly, to a cooling water jacket of the engine.
• cooling water jackets have significant influence to service life of the engines. For example, a poor cooling water jacket may cause cylinder scoring of the engine, even scrapping of the engine.
• the highest temperature points are mainly distributed around the cylinder holes in the cylinder block, and a cooling water jacket is mainly used to cool the cylinder holes, so that the cooling water jacket is important for the design of the cylinder block.
• the coolant flows at two sides of the cylinder block after the coolant enters a body of the cooling water jacket via an inlet. Because the inlet is located at one side of the body, which causes the flow rates of the coolant at the two sides different. Therefore, cooling effects of the coolant at the two sides are not uniform, namely, the coolant at the side away from the inlet can not arrive at the end of the cooling water jacket away from the inlet.
• Embodiments of the present disclosure seek to, at least to some extent, solve at least one of the problems existing in the prior art.
• Embodiments of a first aspect of the present disclosure provide a cooling water jacket of an engine, in which the distribution and cooling effect of the coolant at two sides of the body are uniform.
• Embodiments of a second aspect of the present disclosure provide an engine.
• a cooling water jacket of an engine comprising a cylinder block and a cylinder sleeve disposed outside and around the cylinder block, the cylinder block includes a plurality of cylinder block parts, the cooling water jacket comprises a body formed by an annular chamber defined between the cylinder sleeve and the cylinder block; and a water inlet located at a side of the cylinder block and communicated with an end of the body at an outer side of a first cylinder block part of the plurality of cylinder block parts, in which an obstructing member for partly obstructing flowing of a coolant in the body, the obstructing member being disposed at the same side as the water inlet and close to a connection of adjacent cylinder block parts.
• the coolant entering into the cooling water jacket from the water inlet is obstructed at the side of the body at which the water inlet is located and transferred to other side of the body away from the water inlet, therefore, an cooling effect at the side of the body away from the water inlet is improved, and the cooling effects at the two sides of the body are balanced.
• an engine comprising: a cylinder block including a plurality of cylinder block parts connected in order; a cylinder sleeve disposed outside and around the cylinder block so as to define an annular chamber therebetween; a cooling water jacket comprising: a body formed by the annular chamber; and a water inlet located at a side of the cylinder block and communicated with an end of the body at an outer side of a first cylinder block part of the plurality of cylinder block parts; in which an obstructing member for partly obstructing flowing of a coolant in the body, the obstructing member being disposed at the same side as the water inlet and close to a connection of adjacent cylinder block parts.
• Fig. l is a schematic view of a cooling water jacket of an engine according to an embodiment of the present disclosure
• Fig.2 is a partially enlarged view of part A in Fig. 1;
• Fig.3 is a schematic view of an obstructing member of the cooling water jacket of an engine according to an embodiment of the present disclosure
• Fig.4 is a side view of the obstructing member of the cooling water jacket of an engine according to an embodiment of the present disclosure.
• Fig.5 shows an cooling effect of the cooling water jacket according to an embodiment of the present disclosure.
• the engine comprises a cylinder block 4, and a cylinder sleeve 3 disposed outside and around the cylinder block 4.
• the cylinder block 4 may include a plurality of cylinder block parts such as the first to fourth cylinder block parts 41-44.
• the cooling water jacket of the engine according to embodiments of the present disclosure comprises a body 1 and a water inlet 2.
• the body 1 is formed by an annular chamber defined between the cylinder sleeve 3 and the cylinder block 4.
• the water inlet 2 may be located at a side of the cylinder block 4 and communicated with an end of the body 1 at an outer side (the left side in Fig. 1) of the first cylinder block part 41 of the plurality of cylinder block parts.
• An obstructing member 5 for partly obstructing flowing of a coolant is disposed within the body 4. More particularly, the obstructing member 5 may be disposed at the same side (the left side in Fig. 1) as the water inlet 2 and close to a connection of adjacent cylinder block parts, for example, in Fig. 1, the obstructing member 5 is close to the connection of the first cylinder block part 41 and the second cylinder block parts 42.
• the coolant entering into the cooling water jacket from the water inlet 2 is obstructed at the left side of the body 1 and transferred to other side (the right side in Fig. 1) of the body 1 away from the side of the water inlet 2. Therefore, as shown in Fig. 5, a cooling effect at the right side of the body 1 may be improved, that is, more coolant may flow at the right side of the cylinder block 4 and thereby the coolant at the right side of the body 1 can arrive at upper end of the cylinder block, thus balancing the coolant amount and the cooling effects at the two side of the body 1 , and the engine may be cooled from two sides thereof and the cooling effect is good.
• the obstructing member 5 By disposing the obstructing member 5 between the first cylinder block part 41 and the second cylinder block part 42 so as to be close to the connection of the first and second cylinder block parts 41, 42, the obstructing effect of the obstructing member 5 may be further improved.
• the obstructing member 5 may comprise at least two obstructing blocks 51, 52 and a rod 53 for connecting the obstructing blocks51, 52.
• the obstructing blocks 51, 52 are fixed at intervals onto the rod 53 and mounted within the body 1 with interference fit. More particularly, each of the obstructing blocks 51, 52 may be mounted within the body 1 by the interference fit with the first cylinder block parts 41, the second cylinder block parts 42 and the cylinder sleeve 3.
• the obstructing blocks 51, 52 may be made of elastic material.
• the obstructing blocks 51, 52 may be made of vulcanized rubber, so that the noise caused by an impact of water flow against the obstructing blocks 51, 52 may be effectively reduced.
• the rob 53 may be made of rigid material, such as metal material, so as to ensure an anti- impact strength and a structure stability of the obstructing member 5.
• each of the obstructing blocks 51, 52 includes a first end 54 close to the connection between the first and second cylinder block parts 41 and 42 and a second end 55 close to the cylinder sleeve 3.
• the first end 54 has first and second contacts 541 and 542, the first end 54 is tangent to the first cylinder block part 41 at the first contact 541 and tangent to the second cylinder block part 42 at the second contact 542.
• the first end 54, the first contact 541, the second contact 542, the first cylinder block part 41 and the second cylinder block part 42 defines a first space 56 together.
• the second end 55 has third and fourth contacts551 and 552, the second end 55 is tangent to the cylinder sleeve 3 at the third contact 551 and tangent to the first cylinder block part 41 at the fourth contact 552.
• the third contact 551, the fourth contact 552 and the first cylinder block part 41 defines a second space 57 together.
• each obstructing block has a plurality of contacts with the cylinder block 4 and the cylinder sleeve 3 respectively, a stability of the obstructing block within the body 1 may be improved. Moreover, each obstructing block made of the elastic material may be swollen when the temperature rises, so that the first and second spaces 56 and 57 may provide reserved spaces for the swelling of the obstructing block, and the deformation and aging of the obstructing block are reduced.
• Each of the first space 56 and the second space 57 may be smaller than each of the first end 54 and the second end 55, so that enough reserved spaces are ensured for the deformation of the obstructing blocks and the stability of the obstructing block within the body 1 will be not affected due to too-large reserved spaces.
• the obstructing member 5 includes a first obstructing block 51 disposed at an end of the rod 53 and a second obstructing block 52 disposed at a middle part of the rod 53.
• the obstructing member 5 consisted of the first and second obstructing blocks 51 and 52 and the rod 53 may be designed as a wedge-shape integrally according to a draft angle of the cylinder block 4, so that the obstructing blocks of the obstructing member 5 may match the cylinder block 4 and the cylinder sleeve 3 properly. Furthermore, the obstructing member 5 may includes three or four obstructing blocks.
• An engine according to embodiments of the present disclosure is provided and comprises the cooling water jacket described with reference to the above embodiments.
• an engine comprises a cylinder block 4, a cylinder sleeve 3 and a cooling water jacket.
• the cylinder block 4 includes a plurality of cylinder block parts connected in order.
• the cylinder sleeves 3 is disposed outside and around the cylinder block 4 so as to define an annular chamber therebetween.
• the cooling water jacket comprises a body 1 formed by an annular chamber and a water inlet 2 located at a side (the left side in Fig. 1) of the cylinder block 4 and communicated with an end of the body 1 at an outer side (the left side in Fig. 1) of a first cylinder block part 41 of the plurality of cylinder block parts.
• An obstructing member 5 for partly obstructing flowing of the coolant is disposed within the body 1. More particularly, the obstructing member 5 may be disposed at the same side (the left side in Fig. 1) as the water inlet 2 and close to a connection of adjacent cylinder block parts.
• the coolant entering into the cooling water jacket from the water inlet 2 is obstructed at the left side of the body 1 and partly transferred to other side (the right side in Fig. 1) of the body 1. Therefore, a cooling effect at the right side of the body 1 may be improved, thus balancing the cooling effects at the two side of the body 1 , and the engine may be cooled from two sides thereof and the cooling effect is good.
• the other structures of the water cooling water jacket may be the same as those of the cooling water jacket described with reference to the above embodiments, detailed descriptions thereof are omitted here.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Cylinder Crankcases Of Internal Combustion Engines (AREA)

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Citations (6)

• 2011
  • 2011-08-17 CN CN201110235407.9A patent/CN102953858B/zh active Active
• 2012
  • 2012-08-06 WO PCT/CN2012/079718 patent/WO2013023537A1/en active Application Filing

Patent Citations (6)

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