Crankshaft assembly and engine

A crankshaft and assembly technology, applied in the field of crankshaft assembly and engine, can solve problems such as inconvenient assembly, complex structure, and large mass

Active Publication Date: 2021-04-30
CHONGQING IONCIN NAVIGATION ENGINE MFG C0 LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The scavenging of the two-stroke engine mainly relies on the compression of the volume of the crankcase when the piston descends to generate a pressure difference (the pressure in the crankcase is greater than the pressure in the cylinder body). After the scavenging port is opened, the gas in the crankcase enters the cylinder through the scavenging port. , to sweep the combusted exhaust gas out of the cylinder, and the air supply ratio and air supply efficiency of the crankcase scavenging air are mainly determined by the shape and size of the intake port, scavenging port, exhaust

Method used

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  • Crankshaft assembly and engine
  • Crankshaft assembly and engine
  • Crankshaft assembly and engine

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Embodiment Construction

[0023] figure 1 It is the exploded diagram of the first viewing angle of the present invention, figure 2 It is the exploded view of the second viewing angle of the present invention, image 3 It is a schematic diagram of the assembly structure of the present invention, Figure 4 It is a schematic structural diagram of filler I of the present invention; as shown in the figure, the crankshaft assembly in this embodiment includes crankshaft 1 and filler, and the filler and crankshaft 1 are connected by interference, so that the filler and crankshaft 1 connected as a whole; by fixing the filler on the crankshaft 1 through an interference connection, it not only has a simple and compact structure, but also reduces the number of parts assembled, thereby improving the assembly efficiency and reducing the weight of the crankshaft assembly. Furthermore, the rotational inertial force of the crankshaft is reduced, and the production cost is also saved; the filler and the crankshaft 1 ...

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Abstract

The invention discloses a crankshaft assembly. The crankshaft assembly comprises a crankshaft and a filler, wherein the filler is in interference connection with the crankshaft, so that the filler and the crankshaft are connected into a whole body. The filler is fixed to the crankshaft in an interference connection mode, so that the crankshaft assembly is simple and compact in structure, the number of assembled parts is reduced, the assembling efficiency is improved, the weight of the crankshaft assembly is reduced, the rotating inertia force of the crankshaft is reduced, and the production cost is saved; and the crankshaft assembly is installed on an engine, so that the overall mass of the engine is reduced, the lightweight design is realized, the scavenging efficiency of an engine cylinder body is improved, the performance of the engine is improved, the production cost is reduced, and the market competitiveness is improved.

Description

technical field [0001] The invention relates to the field of engines, in particular to a crankshaft assembly and an engine. Background technique [0002] The scavenging of the two-stroke engine mainly relies on the compression of the volume of the crankcase when the piston descends to generate a pressure difference (the pressure in the crankcase is greater than the pressure in the cylinder body). After the scavenging port is opened, the gas in the crankcase enters the cylinder through the scavenging port. , to sweep the burned exhaust gas out of the cylinder, and the gas supply ratio and gas supply efficiency of the crankcase scavenging gas are mainly determined by the shape and size of the intake port, scavenging port, exhaust port, and the volume of the crankcase; but the crankshaft The volume of the box is strictly limited by the structure of the crankcase. In the prior art, the crankshaft filler is usually used to reduce the gas volume in the crankcase. At present, all c...

Claims

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Application Information

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IPC IPC(8): F16C3/10F02B75/02
CPCF16C3/10F02B75/02F02B2075/025
Inventor 侯尊石晓东唐程唐欣
Owner CHONGQING IONCIN NAVIGATION ENGINE MFG C0 LTD
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