RU5423U1 - INTERNAL COMBUSTION ENGINE CONNECTOR LUBRICATION SYSTEM - Google Patents

Abstract

A crank pin lubrication system for an internal combustion engine, comprising a crankcase with an oil line, a cylinder, a piston, a connecting rod with an oil supply channel, characterized in that a channel is made in the oil line of the crankcase, a sleeve is installed at the outlet of which is movably mounted against the end plane of the shaft a connecting rod, the shape of which is determined by the trajectory of the plane-parallel movement of the connecting rod rod at the point of contact with the sleeve, the hole of which at the moment the piston is at the top or bottom dead center ah coincides with the holes made in the oil supply channel of the connecting rod, at the outlet of which check valves are installed.

Description

/ // J / 4 CONNECTING SYSTEM OF THE CONNECTING ROD OF THE INNER COMBUSTION ENGINE The lubrication system of the conrod neck relates to mechanical engineering and, in particular, to engine building. A known lubrication system of the connecting rod neck of an internal combustion engine (ICE), in which oil is supplied to the surface of the connecting rod neck of the crankshaft from the oil line to the crankcase © by drilling in the main and connecting rod journals of the crankshaft, (Internal Combustion Engines: Design and strength calculation of piston and combined engines.Textbook for university students enrolled in internal combustion engines / D.N. Vyrubov, S.I. Efimov, N.A. 4th ed., Revised and up to . - M .: Engineering 1984 .. 384 pages)... The disadvantage of this oil supply scheme is that the crankshaft is drilling in the main and crank journals, which reduces its strength. Places for drilling on the surface of the necks are stress concentrators and probable places for crankshaft breakdowns. To avoid this, crankshafts are manufactured with a large margin of safety, i.e. larger and heavier. In addition, drilling several deep holes in such a complex part as a crankshaft greatly complicates its manufacturing technology and cost. M. 1/06; F02M 3/20

(OT.s; II82I88, MSh F02F3 / 20, FI6 OT 1/08, 1984, B№36, 1985), in which the cylinder is provided with a longitudinal groove on its working surface, one end of which is connected with the radial oil supply channel of the cylinder, and the other comes out aa its bottom end, the piston is equipped with an additional radial channel located above the lower ring opposite the longitudinal groove of the cylinder, and the ring is equipped with a radial protrusion placed in the longitudinal groove of the cylinder and corresponding to it in profile. Thus, the oil enters the connecting rod’s longitudinal channel from the radial oil supply channel in the cylinder, through the longitudinal channel on the cylinder’s mirror, additional radial and axial channels in the piston, bore in the piston rod, B1 finger cavity and then through the pin in the finger to the connecting rod.

The disadvantage of this scheme for supplying oil to the connecting rod longitudinal channel is the following:

a longitudinal channel is made on the cylinder mirror, which not only complicates its manufacture, but also increases the unevenness of the piston wear, and therefore reduces the reliability of the engine;

significantly increases the height of the piston, as only the height of the skirt should be greater than the piston stroke, which leads to an increase in the total height of the engine;

installation of a cylinder-piston group is significantly complicated, especially for a water-cooled engine.

Therefore, the object of the invention is to simplify the design of the crankshaft of an internal combustion engine by creating a new lubrication supply system to the crank pin of the crankshaft.

, The technical result that can be obtained as a result of the implementation of the claimed crank pin lubrication system two is to simplify the cx @ supply of lubricant to the crank pin, as well as simplifying the design and improving the reliability of the crankshaft.

This is achieved by the fact that the connecting rod neck lubrication system of the internal combustion engine, comprising a crankcase with an oil line, a cylinder, a piston, a connecting rod with an oil supply channel, and also a channel in the oil line of the crankcase, a sleeve is installed at the outlet of the crankcase that can be moved and is constantly pressed against the end connecting rod rod plane, the shape of which is determined by the trajectory

plane-parallel movement of the connecting rod rod in place of the conversion stroke with the sleeve, vIcoTope at the time the piston is in

the top or bottom dead center coincides with the holes made in the oil supply channel of the connecting rod, at the outlet of which check valves are installed.

The specified technical result is achieved by creating a new lubricant supply system to the connecting rod journal, in which oil from the crankcase oil line enters through a movable sleeve pressed against the end plane of the connecting rod shaft into the connecting rod oil supply channel and then to the connecting rod neck.

The supply of lubricant to the crank pin of the ICE directly through the end plane of the connecting rod rod increases the reliability of the crankshaft, since the crank and root journals are solid, without stress co-centrators on their surfaces. Due to the fact that the connecting rod and root necks are continuous, the thesis technology of lf // J / y / is simplified

Gtozleniya and reduces the cost of the most expensive and complex parts of the internal combustion engine - the crankshaft. In Fig. 1, a lubrication system of the connecting rod journal of an internal combustion engine is depicted, in Fig. 2 is a view A-A of Fig. 1. In the oil line I of the crankcase 2, a channel 3 is made with a sleeve 4 а installed at the outlet from it and with the possibility of movement, the rod of the connecting rod 5 is made with a polished tertiary plane b, the shape of which (see figure 2) is determined by the path of the plane-parallel movement of the rod of the connecting rod 5 in the contact point with the movable sleeve 4, in the end plane 6 of the rod of the connecting rod 5, holes 7.8 are made

from the oil supply channel 9 in the connecting rod with check valves 10, II, coinciding with the movable sleeve: - 4 oil channel 3 with the piston position in the VMG or BDC, respectively. The sleeve 4 is constantly pressed against the polished end plane 6 of the rod of the connecting rod 5, for example, by oil pressure or by a spring (not shown in the drawing).

The system operates as follows. When the engine is running, oil under pressure from the oil line I in the crankcase 2 is fed to the movable sleeve 4 and the latter is pressed (for example: oil pressure or spring) to the polished end plane 6 of the rod of the connecting rod 5, which prevents the leakage of oil from the oil line. With a plane-parallel movement of the rod of the connecting rod 5, the sleeve 4 remains pressed against the end plane 6. When the piston is in the VMG or BDC, the hole of the movable sleeve 4 coincides with the hole 7 or 8 in the end plane of the connecting rod, reversed by a check valve 10 or II. When eFom oil pressure from line 1, the valve 10 or II is squeezed out and the oil enters the oil supply,

The connecting channel 9 leading to the connecting rod journal 12. After the BlfC or HMT piston passes, the check valve 10 or II closes, preventing oil from escaping from the connecting rod, and the hole of the movable sleeve 4 remains closed by the end plane b of the connecting rod rod 5.

Thus, the claimed crank pin lubrication system two, allows to simplify the design, increase reliability and reduce the cost of manufacturing technology for the most complex engine parts - the crankshaft. Head of Patent Department Kommersant N. Kondratyeva,

Claims (1)

The connecting rod neck lubrication system of an internal combustion engine, comprising a crankcase with an oil line, a cylinder, a piston, a connecting rod with an oil supply channel, characterized in that a channel is made in the oil line of the crankcase, an outlet is installed with the possibility of movement, constantly pressed against the end plane of the rod a connecting rod, the shape of which is determined by the trajectory of plane-parallel movement of the connecting rod rod at the point of contact with the sleeve, the hole of which at the moment the piston is at the top or bottom dead center ah coincides with the holes made in the oil supply channel of the connecting rod, at the outlet of which check valves are installed.