SU1437547A1 - Tunnel-type crankcase unit - Google Patents

Abstract

Invention m. used in engine building. The purpose of the invention is to increase reliability by redistributing power flows in a power circuit. The block parts (CU) consist of an upper plate 1 with openings 2 for studs for fastening the heads of CYL1STRA and for sleeves of 3 cylinders

Description

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and the bottom plate 4 with holes 5 under the cylinder bores. The cylinders are interconnected by transverse interdistal septa 6 and longitudinal side walls 7o. Barter parts are made in B1 than the transverse walls 8, made at the same time fc CU, In walls 8, cylindrical bores (P) 9 are made under the crankshaft crankshaft main bearing (KB) “8” connected together by walls 7, bonded together with straight power ribs 10, p) o two for each CU, Ribs 10 matched with R 9 tangential to their outside surface and with CU on the lower surface of the plate 4 in the places of its passage - H elp1 with the axes of the openings 2. Р 9 performed | Bmy C variable cross-section-. e | m, and their upper part, lying BJ) Eie. horizontal horizontal plane, pr

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: The invention is attributed to machine-building and is intended for use primarily in engine-driving as the cores of internal combustion engines j except for that: O, the invention can be used in bold structures that use

The purpose of the invention is to increase reliability, reduce weight and simplify.

blockbuster manufacturing techniques. Fig 1 shows a crankcase of a tunnel type V-engine of the internal combustion, cross section; on fng, 2 - section aa on figs 1; in fig. 3 - calculated vector diagrams of total radial CKSif acting 1 ШХ on the most loaded above a quarter, fifth and sixth roots 1 above bearings (supports) of a 12ЧН 13/14 diesel engine in fixed coordinates relative to the engine

The tunnel-type crankcase of a V-shaped internal combustion engine - 1b (two) contains block (B) and crankcase (K) parts, which are made together. The block parts contain the top plate 1 with the holes 2 made in it under the pin of the attachment of the head J3OK TSIOGSHVDRO and under the T-SHZY 3 TSIPIND

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walking through the KB axis, it is formed by two equidistant cylindrical surfaces, the axis of symmetry of which coincides with the axis of KB, the lower part of P 9 is formed by two cylindrical surfaces, the axis of symmetry of the inner surface P coincides with the axis of KB, and the axis of symmetry of the outer cylindrical surface biased, axis HF. Power rib 10 m., Rectangular section. Dynamic loads are redistributed between the warhead and the crankcase through ribs 10 to form a closed power circuit and increase the rigidity of the block housing. The variable nature of the cross section P increases the local stiffness of its lower part and reduces the uneven distribution of loads, 1 GoP, f-gla, 3 sludge.

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Ditch and bottom plate 4 with holes 5 for cylinder liners. The cylinders are interconnected by inter1D1Lindra partitions 6 and side walls 7, the crankcase parts contain transverse walls B with cylindrical bores 9 formed in them at the same time as the crankshaft main bearings. The transverse walls are interconnected by longitudinal side walls 7, Boring is connected to the straight parts tangential force connections in the form of two-sided, symmetrical with respect to the transverse wall of the edges 10 of rectangular cross section. There are two such connections for each block part, which are coupled with borings tangential to their outer surface, and with block parts at the intersections of the lower surface of the lower plate with the axes of the holes for studs of cylinder heads. Boring 9 is made with variable cross-section. At the same time, its upper part, to the points of interface with tangential power connections (ribs) 10, is formed by two equidistant cylindrical surfaces with internal Rg and external Cc radii, respectively, the axis of symmetry is co-phage, 2

Claims (2)

Claim 1. A tunnel-type crankcase containing block parts consisting of an upper plate with holes made therein for cylinder head studs and cylinder liners and a lower plate with cylinder liner holes, the latter being interconnected by transverse cylinder bridges and longitudinal side walls, and crankcase parts - in the form of transverse walls made integral with block parts, in each of which cylindrical bores are made under the crankshaft main bearing, characterized in, the fact that, in order to increase reliability by redistributing the power flows in the power circuit, the transverse walls are provided with straight power ribs made at the same time as two edges for each block part, paired with cylindrical bores tangential to their outer surface, and with block parts - along the lower surface of the lower plate at the points of its intersection with the axes of the holes for the studs of the cylinder heads, the bores for the main bearings are made with a variable cross section, with their upper part lying in Above the horizontal plane passing through the axis of the crankshaft, it is formed by two equidistant cylindrical surfaces, the axis of symmetry of which coincides with the axis of the crankshaft, and their lower part is formed by two cylindrical surfaces, the axis of symmetry of the inner surface of the bore coincides with the axis of the crankshaft, and the axis of symmetry of the outer the cylindrical surface is mixed relative to the axis of the crankshaft. 2o Blo.k-carter pop. 1, characterized in that the power ribs are made of rectangular cross-section. Aa Fig / Smooth