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Camshaft assembly and internal combustion engine

A technology of camshafts and components, which is applied in the direction of mechanical equipment, engine components, machines/engines, etc., can solve the problem that the exhaust timing of internal combustion engines cannot be changed, so as to save processing hours, change the timing of intake and exhaust, and save materials Effect

Pending Publication Date: 2020-12-22
CSSC POWER INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a camshaft assembly and an internal combustion engine to solve the problem that the relative position of the cam and the shaft of the internal combustion engine camshaft assembly is fixed so that the exhaust timing of the internal combustion engine cannot be changed

Method used

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  • Camshaft assembly and internal combustion engine
  • Camshaft assembly and internal combustion engine
  • Camshaft assembly and internal combustion engine

Examples

Experimental program
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Effect test

Embodiment 1

[0044] like Figure 1-2 As shown, the present invention provides a camshaft assembly, including a bushing 1 , a camshaft 2 , an intake cam 3 and an exhaust cam 4 . The intake cam 3 and the exhaust cam 4 are rotatably sleeved on the shaft sleeve 1 . The camshaft 2 is arranged coaxially with the bushing 1 . The camshaft 2 includes a first shaft section 21 and a second shaft section 22 , and the first shaft section 21 and the second shaft section 22 are respectively connected to two ends of the bushing 1 .

[0045] Specifically, in this embodiment, there is one intake cam 3 and one exhaust cam 4 , and in other embodiments, the number of intake cams 3 and exhaust cams 4 can be determined as required.

[0046] Optionally, as in Figure 3-4 As shown, the ends of the first shaft section 21 and the second shaft section 22 close to the shaft sleeve 1 are provided with first slots 24, and the two ends of the shaft sleeve 1 are inserted into the first shaft section 21 and the second sh...

Embodiment 2

[0056] This embodiment discloses an internal combustion engine, which includes the camshaft assembly in Embodiment 1. The internal combustion engine in this embodiment is especially suitable for development and testing of internal combustion engines. When testing and verifying different intake and exhaust timings of the internal combustion engine, the nut 52 on the camshaft assembly can be loosened, the intake cam 3 and the exhaust cam 4 can be rotated, and the relationship between the intake cam 3 and the exhaust cam 4 and the camshaft can be adjusted. 2, thereby adjusting the intake and exhaust timing of the internal combustion engine without replacing the entire camshaft assembly. Moreover, the first shaft shoulder 11 on the shaft sleeve 1 is provided with an angle scale line 12, and the relative positions of the intake cam 3, the exhaust cam 4 and the camshaft 2 can be adjusted with reference to the angle scale line 12, and the adjustment process is convenient and fast. . ...

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PUM

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Abstract

The invention belongs to the technical field of internal combustion engines, and discloses a camshaft assembly and an internal combustion engine. The camshaft assembly comprises a shaft sleeve, a camshaft, an air inlet cam, an exhaust cam and a fastening assembly. The air inlet cam and the exhaust cam are rotatably arranged on the shaft sleeve in a sleeving mode; the shaft sleeve and the camshaftare coaxially arranged; the camshaft comprises a first shaft section and a second shaft section; the first shaft section and the second shaft section are connected to two ends of the shaft sleeve respectively; and the fastening assembly is used for driving the first shaft section and the second shaft section to clamp and fix the air inlet cam and the exhaust cam. The internal combustion engine comprises the camshaft assembly; the fastening assembly can be fastened and loosened; when the internal combustion engine needs to adjust intake and exhaust timing, only the fastening assembly needs to be loosened, the relative positions of the air inlet cam and the shaft sleeve and the relative positions of the exhaust cam and the shaft sleeve are adjusted according to needs, then the fastening assembly is fastened again, the adjustment of intake and exhaust timing can be completed, and the whole camshaft assembly does not need to be replaced, so that materials and working hours are saved.

Description

technical field [0001] The invention relates to the technical field of internal combustion engines, in particular to a camshaft assembly and an internal combustion engine. Background technique [0002] When the internal combustion engine is running, the opening of the intake and exhaust valves is mainly controlled by the camshaft assembly. The profile of the cams on the camshaft assembly determines the intake and exhaust timing of the intake and exhaust valves. According to whether the cam and the shaft are integrated, the camshaft assembly generally has two types: integral type and combined type. No matter what kind of camshaft assembly, the position of the cam and the shaft on the finished camshaft assembly is fixed. If the intake and exhaust timing needs to be adjusted, the entire camshaft assembly needs to be replaced. Especially for the single-cylinder engine used for the development test, it is necessary to test and verify different intake and exhaust timings. Using ...

Claims

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Application Information

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IPC IPC(8): F01L1/047F01L1/34
CPCF01L1/047F01L1/34F01L2001/0473
Inventor 黄皓余正彬
Owner CSSC POWER INST CO LTD