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Single crank unit of light crankshaft of internal combustion engine

A light-weight, internal combustion engine technology, applied in the direction of crankshaft, engine components, engine lubrication, etc., can solve the problems of weak overall coordination, poor lubrication effect, and low weight reduction, and achieve strong overall coordination, reduced mass, and light weight Highly Quantitative Effects

Pending Publication Date: 2017-08-18
DONGFENG COMML VEHICLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the defects and problems of low weight reduction, weak overall cooperation and poor lubricating effect existing in the prior art, and provide a high light weight, strong overall cooperation and lubricating effect. The best single crank unit for lightweight crankshaft of internal combustion engine

Method used

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  • Single crank unit of light crankshaft of internal combustion engine
  • Single crank unit of light crankshaft of internal combustion engine
  • Single crank unit of light crankshaft of internal combustion engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] see Figure 1 to Figure 4 , a single throw unit of a lightweight crankshaft for an internal combustion engine, comprising a main journal 1, a connecting rod journal 2 and a crank block 3, the main journal 1 is connected to the middle of the crank block 3, and the crank block 3 is located on the crank block 3, the main shaft The upper and lower ends of the junction of the neck 1 are respectively the crank arm 4 and the balance weight 5, the crank arm 4 is connected to the connecting rod journal 2, and the main journal 1 and the connecting rod journal 2 are respectively located on both sides of the crank block 3;

[0050] The inside of the main journal 1 is provided with a No. 1 through hole 11 , the inside of the part where the crankshaft block 3 meets the main journal 1 is provided with a No. 2 through hole 31 , and the inside of the crank arm 4 is provided with a No. 3 through hole. Through hole 41, the inside of connecting rod neck 2 is provided with through hole No. ...

Embodiment 2

[0052] Basic content is the same as embodiment 1, the difference is:

[0053] The No. 1 through hole 11 and the No. 2 through hole 31 are coaxially arranged and have the same diameter; the right part of the No. 3 through hole 41 is flush with the No. 4 through hole 21, and the left part of the No. The outer surface of the crank arm 4 joins to form an outer through hole 43, the diameter of which is smaller than the diameter of the right part of No. 3 through hole 41 (the axis of the through hole can be coaxial with the axis of the corresponding connecting pin, or there must be offset). The diameter of the No. 1 through hole 11 is 25%-75% of the diameter of the main journal 1, and the diameter of the No. 4 through hole 21 is 25%-75% of the diameter of the connecting rod neck 2 (below this range, the effect is not obvious , above this range reduces the size of the overlapping region, weakening strength and stiffness).

Embodiment 3

[0055] Basic content is the same as embodiment 1, the difference is:

[0056] The main journal oil passage 12 communicates with one end of the crank arm oil passage 42 through the No. 1 built-in oil pipe 6, and the other end of the crank arm oil passage 42 communicates with the connecting rod neck oil passage 22 through the No. 2 built-in oil pipe 7. The oil pipe 6 is located in the first through hole 11 and the second through hole 31 , and the second built-in oil pipe 7 is located in the third through hole 41 and the fourth through hole 21 . The No. 1 built-in oil pipe 6 and the No. 2 built-in oil pipe 7 have the same structure, both including the oil pipe body 8 and the wedge-shaped joint 9 connected to its two ends; the wedge-shaped joint 9 is a trapezoidal structure, and the large-diameter bottom surface of the wedge-shaped joint 9 and The oil pipe body 8 communicates, the small-diameter top surface of the wedge joint 9 communicates with the main journal oil passage 12, th...

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Abstract

The invention discloses a single crank unit of a light crankshaft of an internal combustion engine. The single crank unit comprises a main shaft neck, a connecting rod neck and a crankshaft block; the upper and lower two ends of the joined place of the crankshaft block with the main shaft neck are respectively a crank arm and a balance block; through holes 1, 2, 3 and 4 for communicating in sequence are formed in the main shaft neck, the crankshaft block, the crank arm and the connecting rod neck; a main shaft neck oil way, a crank arm oil way and a connecting rod neck oil way formed in the main shaft neck, the crank arm and the connecting rod neck communicate through two internal oil pipes arranged in the four through holes; the internal oil pipe comprises an oil pipe body, a wedged joint and a spring; and a mounting groove is formed in the periphery of the wedged joint for embedding and matching with a sealing ring. The single crank unit is higher in lightweight degree and overall cooperativeness, better in lubrication effect, liable to operate and higher in stability.

Description

technical field [0001] The invention relates to a crankshaft of an internal combustion engine, in particular to a single crank unit of a lightweight crankshaft of an internal combustion engine, which is specifically suitable for ensuring a lubricating effect on the basis of improving the lightweight effect. Background technique [0002] The light weight of the internal combustion engine plays an important role in improving the economy and enhancing the competitiveness. Similarly, the light weight of the crankshaft, which is the main component of the internal combustion engine movement mechanism, can effectively reduce the mass and moment of inertia of the internal combustion engine movement mechanism. It has great benefits in improving the mechanical efficiency and economy, improving the vibration performance, friction and wear of the whole machine. [0003] At present, the crankshaft single throw structure of a typical vehicle internal combustion engine is generally forged ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C3/06F16N1/00
CPCF16C3/06F16N1/00
Inventor 陈小迅曾文林李显戴
Owner DONGFENG COMML VEHICLE CO LTD
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