Engine and its combined balance shaft
A combined, balance shaft technology, applied in the automotive field, can solve the problems of unfavorable light weight of the balance shaft, and achieve the effects of easy acquisition, low cost, and low processing difficulty
Active Publication Date: 2020-08-18
SAIC MOTOR
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
[0005] The problem solved by the invention is that the existing balance shaft is not conducive to light weight
Method used
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no. 2 example
[0065] This embodiment provides another combined balance shaft, which differs from the combined balance shaft in the first embodiment in that, refer to Figure 9 As shown, the phase difference between the first balance weight 20 and the second balance weight 30 is zero degree. The combined balance shaft of this embodiment is especially suitable for 2-cylinder or 4-cylinder engines.
[0066] Wherein, the set angle between the timing installation surface 43 and the reference plane is still 90 degrees.
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The invention discloses an engine and a combined type balance shaft thereof. The combined type balance shaft comprises a hollow shaft, a first counterbalance, a shaft sleeve and a second counterbalance, wherein the hollow shaft is provided with a first end and a second end in the axial direction; the hollow shaft is provided with an axial hole; the first counterbalance is arranged at the first endof the hollow shaft in a sleeving manner; the shaft sleeve is fixed at the second end of the hollow shaft in a sleeving manner; and the second counterbalance is fixed at the external part of the shaft sleeve in a sleeving manner. The balance shaft facilitates light weight.
Description
technical field [0001] The invention relates to the field of automobiles, in particular to an engine and a combined balance shaft thereof. Background technique [0002] During the working cycle of the engine, the piston moves very quickly and at a very uneven speed. At the top and bottom dead centers, the speed of the piston is zero, and at the middle of the top and bottom dead center the speed reaches the highest. Due to the repeated high-speed linear motion of the piston in the cylinder, a large inertial force must be generated on the piston, piston pin and connecting rod. Generally, corresponding counterweights are arranged on the connecting rod of the engine crankshaft, which can effectively balance these inertial forces, but only part of the moving mass of the counterweight on the connecting rod participates in linear motion, and the other part participates in rotation. Except for the upper and lower dead center positions, various inertial forces cannot be completely ...
Claims
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IPC IPC(8): F16C3/20
CPCF16C3/20
Inventor 聂淑一严嵘曾斌树向君焦玉富李禕旻朱益骉陈瑜
Owner SAIC MOTOR