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Piston connecting rod structure of internal-combustion engine

A technology for pistons, connecting rods and internal combustion engines, which is applied in the direction of pistons, connecting rods, mechanical equipment, etc., can solve the problems of internal combustion engine life and adverse effects on performance, and achieve the effects of reducing excess mass, reducing inertial force, and easy production

Inactive Publication Date: 2010-08-18
LONCIN MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the strength and rigidity of the connecting rod are met by ensuring the thickness of the connecting rod at present, the mass of the connecting rod is bound to increase. The greater the mass, the greater the inertial force of the connecting rod during reciprocating motion, and the reciprocating The greater the inertial force, the greater the effect on the kinematics of the piston and connecting rod, which can adversely affect the life and performance of the internal combustion engine

Method used

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  • Piston connecting rod structure of internal-combustion engine
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  • Piston connecting rod structure of internal-combustion engine

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Embodiment Construction

[0014] refer to figure 1 , the piston 1 of the internal combustion engine is connected with the small end 5 of the connecting rod through the piston pin, and the large end 6 of the connecting rod is connected with the crankshaft through the crank pin. When the internal combustion engine is working, the piston drives the crankshaft to rotate through the connecting rod. The left-right symmetrical side of the connecting rod small end 5 is set as the inclined surface 3, so that the connecting rod small end 5 forms a wedge-shaped head, which can minimize the excess mass of the connecting rod under the premise of satisfying the strength and rigidity of the connecting rod. The angle between the connecting rod small end slope 3 and the central axis of the connecting rod is 5° to 20°. Through this angle parameter, it can ensure that the strength and rigidity of the connecting rod small end will not be weakened, and the excess mass will be subtracted. In this embodiment, the angle betw...

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Abstract

The invention relates to a piston connecting rod structure of an internal-combustion engine. A piston is hinged with a connecting rod small end through a piston pin. The piston connecting rod structure is characterized in that the left and right symmetrical sides of the connecting rod small end are provided with inclined planes so that the connecting rod small end forms a wedge-shaped head; the center of the inclined plane at the symmetrical side of the wedge-shaped head is provided with a through hole for assembling the piston pin; the part of the piston for assembling a connecting rod is provided with a wedge-shaped groove; and a pin hole formed on a piston pin seat of the piston passes through the wedge-shaped groove. The connecting rod small end adopts a wedge-shaped structure, so a reciprocating inertia force of the connecting rod is reduced by subtracting the residual mass of the connecting rod, and meanwhile the strength and rigidity of the piston connecting rod can be satisfied.

Description

technical field [0001] The invention particularly relates to a piston connecting rod structure of an internal combustion engine. Background technique [0002] The piston of the small general-purpose internal combustion engine is connected with the small end of the connecting rod through the piston pin, and the large end of the connecting rod is connected with the crankshaft through the crank pin. When the internal combustion engine is working, the piston drives the crankshaft to rotate through the connecting rod. Since the connecting rod undergoes periodic reciprocating motion and self-oscillation driven by the reciprocating motion of the piston, the connecting rod is subjected to extremely complex cross-variable loads such as compression, tension and bending, which requires the connecting rod to have Sufficient strength and stiffness to ensure normal operation and service life, so the two sides of the small end of the existing piston connecting rod are usually symmetrical a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B75/32F02B77/00F02F3/00
CPCF16C7/023
Inventor 景华阳刘荣利洪方平付强
Owner LONCIN MOTOR
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