RU2414U1 - INTERNAL COMBUSTION ENGINE WITH BALANCE SHAFT - Google Patents

Abstract

An internal combustion engine with a balancing shaft, comprising a cylinder with a piston, a crankcase with a crankshaft installed therein, having a connecting rod, cheeks with counterweights and a motor sprocket, and a balancing shaft with a counterweight, connected by a gear transmission with a crankshaft, characterized in that the center of gravity of the counterweight the balancing shaft is biased towards the motor sprocket perpendicular to the plane passing through the axis of the cylinder and connecting rod.

Description

Internal combustion engine with heavy weight 1011 1.

The utility model relates to an engine, in particular a water engine, in which the masses moving together with the G system are used to balance the inertia compression in the crank drive mechanism of the engine.

A one-cylinder engine is known that contains a cylinder-piston cylinder with a piston, a crankcase with a crankshaft installed in it (see S.G. Mikryukov et al., 1-1Zhevsky motorcycles, published by Udglurtiya, Izhevsk, I98I p. 39)

The disadvantage of this engine is the high level of vibration transmitted from the running engine to the saddle, handlebar and STEEL of the motorcycle.

A single-cylinder motor-cam engine is known, which contains a cylinder with a piston, a crankcase with crankshaft installed in it, a shaft with a connecting rod and cheeks with counterweights, and is connected to a gear reducer balancing the shaft with a counterweight (see IPL II OIC, see IIC f OIC II OL OIC. . 75).

This engine is played for the prototype.

The disadvantage of the prototype is that the vibrational vibrations in it are not sufficiently damped. This is due to the location of the center of gravity of the counterweight of the balancing shaft in the plane passing through the cylinder, the cylinder and the connecting rod (the central plane of the engine), relative to which the center of gravity of the engine is shifted towards the motor transmission.

MKI R 16 R 15/26

The proposed utility model consists of: pcs a cylinder with a piston, a crankcase with a mounted shaft in it, a Hivieionpxi shaft 11, a shaft with nPOTHBOBecaivffl and a motor sprocket 1g /, and a balancing shaft with a balancer shaft 1. The proposed utility model differs from the prototype in that the center of gravity of the counterweight of the balancing shaft is shifted toward the motor-. NARs are star-shaped perpendicular to the plane passing through the main shaft and connecting rod. The center of gravity of the balancing shaft in the proposed engine is in the plane, passing through the center of gravity of this engine, which ensures more complete damping of vibro-vibrational vibrations. In addition, the shift of the counterbalancing shaft counterweight towards the motor sprocket allows for more compact placement of engine parts in the crankcase and, consequently, the lighter and the engine weight.

The technical solution is illustrated by the drawing, where: in FIG. I shows a sectional view of an engine;

in FIG. 2 shows a balancing scheme (front.

plane); in FIG. 3 shows a balancing scheme (vertical plane). The engine contains a cylinder I, 2 with a crankshaft 3 installed in the internal boo shaft and a balancing shaft 4 connected by a gear 5. Crankshaft A connecting rod 6 is connected to the piston 7. And the cheeks 8 with npoTHBOBecaivffi 9. The crankshaft end 3 is rigidly fixed 10, and at the opposite end of the crankshaft 3, a generator II is installed. The center of gravity of the engine is indicated in the drawing DD and the center of the counterweight 12 is indicated by Ts R.

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The centrifugal joint arising from the rotation of the crankshaft 3 is denoted by Pnj, the centrifugal force arising from the rotation of the balancing shaft 4 is Pc, and the inertia force of the piston 7 is denoted by PJ. Following the vertical plane passing through the ocfi of cylinder I and the connecting rod 6 (the plane of the engine sijutrium) is denoted OOj and the trace of a plane parallel to it passing through the center of gravity of the engine Tsd is designated b O.

When the engine is running, the crankshaft and balancing shafts 3 n 4 rotate with the counterweight w 9 and 12 E, the reciprocating movement of the connecting rod 6 g of the piston 7 in the shaft I. The force acting on the piston 7, P is directed along the shaft I. When the shafts 3 and 4 centrifugal forces take P and counterbalance. They are laid out in X and Y directions. The crankshaft and balancing shafts 3 and 4 rotate with the same number of revolutions, so if you need to balance the balance, you can balance only the first-order inertia forces, which together with the centrifugal C LSH.ZH and create moments on the magnitude okazyvayuptie vdshyanzhe vibraschsch level. The aim of balancing is to find the optimal mass ratio. When calculating the oscillation amplitudes, the rule of theoretical mechanics is used: they bring all the forces and moments to

-pt, A

center of tadesti. In a real engine, the center of the engines is not located in the plane passing through the axis of the cylinder 1 of the connecting rod 6 (00j), but is shifted towards the motor sprocket 10 because of the unsuitable arrangement of the gearbox and the right side, no3Toiviy center of the engine system also shifted towards the motor sprocket GO. By this

the weight of the balancing shaft there are alternating moments in the transverse plane, manifested in the form of indentation. In the proposed engine, the plane of rotation of the center of gravity of the counterweights Ts О Oo Oo passes through the center Ц of the engine and therefore, when the engine is running, the signifi- cant moments from P about in the transverse plane of the 001 engine silytrium do not occur. Due to this, the level of vibration in the proposed engine is significantly lower than the level of vibration in the engine adopted as a prototype. The use of the proposed engine. Balancing with a shshoshym shaft compared with the prototype will provide. Reduction of vibration effects on the motorcycle & Utah and smaller overall dimensions of the engine.

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Claims (1)

An internal combustion engine with a balancing shaft, comprising a cylinder with a piston, a crankcase with a crankshaft installed therein, having a connecting rod, cheeks with counterweights and a motor sprocket, and a balancing shaft with a counterweight, connected by a gear transmission with a crankshaft, characterized in that the center of gravity of the counterweight the balancing shaft is biased towards the motor sprocket perpendicular to the plane passing through the axis of the cylinder and connecting rod.