All balance method for single cylinder diesel and mechanism thereof

Abstract

The invention relates to a full balance method for a single cylinder diesel and a mechanism thereof. The mechanism comprises a crankshaft, front and rear annular connecting rods, front and rear sliding blocks, and a guide assembly, wherein the crankshaft is provided with front and rear eccentric journals, the front and rear annular connecting rods are arranged at the front and rear eccentric journals through front and rear bearings and are arranged in left and right guide arc surfaces of the front and rear sliding blocks; front and rear guide pins of the guide assembly are arranged in guide grooves of the front and rear sliding blocks respectively, front and rear guide bars pass through guide holes of the front and rear sliding blocks respectively and are connected with a supporting shaft, and the ratio of the eccentricity e of the eccentric journals and the working length l of the annular connecting rods is equal to that of the radius R of the crankshaft and the working length L of the connecting rod. The method can fully balance first and second order reciprocating inertia forces of the single cylinder diesel and can reduce the vibration and noise of the diesel.

Description

technical field [0001] The invention relates to a single-cylinder diesel engine full balance method and its mechanism, belonging to the technical field of single-cylinder diesel engine balance. Background technique [0002] Large, medium and small single-cylinder diesel engines are mainly composed of body parts, crankshaft and connecting rod mechanism, ventilation system, fuel supply system, etc. The reciprocating motion of the piston in the cylinder is transformed into the rotational motion of the crankshaft, and the rotational motion of the crankshaft is transformed into It is the reciprocating motion of the piston to realize the working cycle and output power to the outside and the auxiliary systems used to drive the engine. Because the connecting rod mechanism corresponding to the cylinder will generate a reciprocating inertial force and a rotating inertial force, and these two inertial forces also form two alternating moments of inertia to act on the main bearing. These...

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Problems solved by technology

[0005] The dual-axis balance mechanism uses two balance shafts with opposite rotation directions and the same size. The component force of the centrifugal force of the two balance shafts along the direction of the centerline of the cylinder is balanced with the first-order reciprocating inertial force of the piston group, but the number of parts of the mechanism Many, large volume and weight, high cost

[0006] Although the above-mentioned balance mechanism can basically solve the balance of the rotational inertial force of the crank-link mechanism, it can only partially or completely balance the first-order reciprocating inertial force, and cannot solve the balance problem of the second-order reciprocating inertial force, and the second-order reciprocating inertial force The force is about 1 / 3 to 1 / 4 of the first-order reciprocating inertial force, so the balance mechanism of the current single-cylinder diesel engine cannot completely balance the reciprocating inertial force, which is the main reason for the widespread vibration and noise of the single-cylinder diesel engine. Noise environmental pollution seriously affects the comfort of users

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