All-steel piston
A technology of steel pistons and pistons, applied in the field of piston equipment, can solve problems such as increased processing costs, high processing costs, and easy coking of coolant, and achieve the effect of reducing the possibility and solving difficult processing
Inactive Publication Date: 2017-07-25
湖南江滨机器(集团)有限责任公司
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Problems solved by technology
[0003] In the prior art, since the thermal conductivity of the all-steel piston is lower than that of the aluminum piston, the temperature of the fire bank and the ring groove is high, and the coolant is easy to coke. In order to reduce the temperature of the fire bank and the ring groove of the all-steel piston, the cooling To avoid the possibility of liquid coking, the all-steel piston is generally cooled by setting a cooling chamber inside the all-steel piston
[0004] However, setting the cooling chamber inside the all-steel piston will complicate the internal structure of the all-steel piston, resulting in difficulty in processing the all-steel piston and high processing costs, and because the processing of the cooling chamber is limited by the processing method, the cooling The structural design of the cavity is subject to more restrictions, resulting in a general cooling effect
In addition, the cooling cavity in the prior art needs to be processed with a special tool, which further increases the processing cost
Method used
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[0032] The core of the present invention is to provide an all-steel piston, which can effectively improve its own cooling effect, and has simple processing, low cost and good use effect.
[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0034] Please refer to Figure 1 to Figure 10 , figure 1 It is a structural schematic diagram of a specific embodiment of the all-steel piston provided by the present invention; figure 2 A schematic structural view of the piston outer body of the all-steel piston provided...
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The invention discloses an all-steel piston which comprises an outer piston body and an inner piston body, wherein the inner piston body is sleeved by the outer piston body, that is, the inner piston body is arranged inside the outer piston body; the inner circumferential part of the outer piston body is in welded connection with the corresponding position of the outer circumferential part of the inner piston body; and a cooling cavity used for circulation of a cooling liquid is formed between the outer piston body and the inner piston body. The all-steel piston provided by the invention comprises two parts, namely the outer piston body and the inner piston body, and the outer piston body and the inner piston body are welded into a whole by adopting a welding method, so that the problem about the difficulty in machining of a complex all-steel piston structure can be effectively solved. Meanwhile, the all-steel piston can be cooled by utilizing the cooling cavity, so that the coking possibility of the cooling liquid can be effectively lowered.
Description
technical field [0001] The invention relates to the field of piston equipment, in particular to an all-steel piston. Background technique [0002] All-steel piston is the cutting-edge technology of piston technology at present, and its structure is basically thin-walled, which can be manufactured by integral casting, forging, welding and other methods. [0003] In the prior art, since the thermal conductivity of the all-steel piston is lower than that of the aluminum piston, the temperature of the fire bank and the ring groove is high, and the coolant is easy to coke. In order to reduce the temperature of the fire bank and the ring groove of the all-steel piston, the cooling To avoid the possibility of liquid coking, the all-steel piston is generally cooled by setting a cooling chamber inside the all-steel piston. [0004] However, setting the cooling chamber inside the all-steel piston will complicate the internal structure of the all-steel piston, resulting in difficulty ...
Claims
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IPC IPC(8): F16J1/00F16J1/09
CPCF16J1/005F16J1/09
Inventor 余中荣孟俊尧廖君慧黄祖东
Owner 湖南江滨机器(集团)有限责任公司