SU1449720A1 - Crankshaft - Google Patents

Abstract

The invention relates to the field of mechanical engineering, mainly to engine-building, in particular to crankshafts of V-shaped internal combustion engines having two connecting rods on a connecting rod neck. The purpose of the invention is to increase the durability of the crankshaft by reducing the wear of the connecting rod journals and improving maintainability by eliminating abrasive abnormal wear. The crankshaft consists of crank journals 1, main journals 2, cheeks 3, outlet channels 4 and channels for supplying 5 oil 6 to connecting rod bearings 7. Channels 5 are limited by diversion channels 4, which are perpendicular to the direction of forming, connecting rod neck 1, and go out area of low bearing loads 7. The absence of cavities, pockets, and intrusive zones precludes the possibility of collecting abrasive particles and their subsequent ingress into the bearing. 2 Il. o (L | CD 10 Fig. /

Description

; The invention relates to mechanical engineering, mainly to engine building, in particular to crankshafts of V-type internal combustion engines having two connecting rods on the bottom connecting rod neck.

The purpose of the invention is to increase the crankshaft durability by improving wear and tear of the connecting rod journals and improving maintainability by eliminating accidental abrasive wear.

Figure 1 shows the crankshaft; Hi FIG. 2 is a section A-A in FIG. tS

The crankshaft consists of a crank Hiax 1 and main journals 2, cheeks 3, a kanshov 4 branch, perpendicular to the plane of the crank, and a channel in 5 of the oil supply 6 to the connecting rod pod- 20 sh: 1 pnic 7, Channels 4 the retraction communicates with the crank neck J with 5 n channels (EDW. On the crank neck 1 there are two connecting rods 8. In the cylinder block 91 there is oil on the 25 1p main line and main bearings 1I with a ring in the 12th groove 12 .

I When operating the device, oil 6 of 1 oil line 10 through the ring into the 12th groove 12 of the main bearing W and channel 5 of the supply enters the channel | l 4 tap. Distributing uniformly over the outlet channel 4, which is made transparently to the inlet channel 5, the oil flow 4 respectively distributes the abrasive particles contained in it, which fall into the enlarged joint between the neck 1 and the bearing

13 in the field of low loads. Due to the location of channel 4 outlet at the outlet of the crank neck 1 perpendy30

35

40

S

0 5

0

five

0

Cully forming the latter, the flow of oil 6 is distributed evenly in both directions along the crank pin 1, as a result of which the abrasive particles are also distributed evenly. The abrasive particles carried by the oil pass through an increased clearance in the area of low loads, not penetrating into the anti-friction layer, and enter the cylinder block casing, which reduces the wear on the crank pin. The absence of cavities, pockets, and stagnant zones eliminates the possibility of collecting abrasive particles and their subsequent entry into the bearing and, as a result, eliminates the possibility of accidental abrasive wear, which leads to an increase in the durability of the crankshaft. The improvement in serviceability lies in the absence of scuffing on the crank pin, which occurs during abrasive accidental wear of the latter.

Claims (1)

Invention Formula The crankshaft of an internal combustion engine containing main and crankpins, oil drainage channels and oil inlets, perek sec akitsies in the body of the crankpin, characterized in that, in order to increase the durability of the shaft by reducing the wear of the crankpins and improving by eliminating accidental abrasive wear, oil supply channels are limited by drain channels made by perpendicular rio forming the crank pin and extending to the area of low loads.