CN201173153Y

CN201173153Y - IC engine body device

Info

Publication number: CN201173153Y
Application number: CNU2008200010770U
Authority: CN
Inventors: 苗小龙
Original assignee: ORDOS HUATAI AUTOMOBILE ENGINE CO Ltd
Current assignee: Inner Mongol Ou Yide Engine Ltd.
Priority date: 2008-01-16
Filing date: 2008-01-16
Publication date: 2008-12-31
Anticipated expiration: 2018-01-16

Abstract

The utility model relates to an engine body device of an internal combustion engine. The engine body device comprises a cylinder body and a crank case, wherein, the cylinder body is positioned at the upper part of the engine body, the crank case is positioned at the lower part of the engine body, a separating plate shaped structure is arranged in the crank case, integral type crank main bearing holes are arranged on the separating plate shaped structure and at the both ends of the crank case, the circle centre of the crank main bearing holes is on the identical axial line, and the structure provided in the utility model is used to solve the technical problem that partial crack can easily occur in the supporting part of the crank of the internal combustion engine in the prior art, and is helpful to the further improvement of the integral stiffness and intensity of the internal combustion engine body.

Description

A kind of body set of internal-combustion engine

Technical field:

The utility model relates to the body set of a kind of body set of internal-combustion engine, particularly a kind of transportation diesel.

Background technique:

Car combustion engine is when work, body bears as very complicated loads (shown in figure one) such as compression, stretching, bendings, and atmospheric pressure is stretched body, and in the transmittance process of this power, can make the body different piece bear additional crooked and distortion, reciprocal inertia force P _JWith centrifugal force K _rIn the high speed internal-combustion engine, may reach very big numerical value, they also make body be subjected to bending and twisting action, so body should have enough intensity and transverse bending rigidity, when the outside output torque of bent axle, body will be subjected to the twisting action of the reaction torque M ' that is made of side pressure N, therefore, body also will have enough torsional stiffnesies.

In the prior art, a kind of structure commonly used, shown in figure two, it has disclosed a kind of crankshaft main bearing lid of internal-combustion engine, it comprises: cylinder block 1, the main journal supporting base that is formed on the cylinder block bottom and extends along the direction that the axis of bent axle intersects, be formed into the semicircular bearing part 3 of the lower surface of main journal supporting base respectively, this bearing part 3 holds half part of the main journal part 2 of bent axle, and be installed in semicircular bearing cap 4 on the lower surface of axle journal supporting base respectively in the mode on the main journal part 2 of Shin in being accommodated in bearing part 3 of striding, necked part 2 is rotatably supported thus, bearing cap 4 is semicircle, bearing cap 4 is provided with bolt hole 5, be provided with screw 6 in the both sides of bearing part 3, fastening piece 7 is anchored on bearing cap 4 on the bearing part 3 of cylinder block 1 bottom by bolt hole 5 and screw 6, to support bent axle.This kind structure when internal-combustion engine running hours in big load or high rotary speed area, because the body strength and stiffness are relatively poor, make body produce fracture easily, or causes bigger vibration and other forms of damage.

Therefore, how to provide a kind of desirable technological scheme, the change by body and inner crankshaft supporting structure thereof becomes technical problem that needs to be resolved hurrily of the industry to improve the animal economy strength and stiffness.

At present, go back neither one in the prior art and improve the desirable technological scheme that solves the problems of the technologies described above.

The model utility content:

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and a kind of body set of realizing improving the strength and stiffness of internal combustion (IC) engine airframe is provided.

The body set of a kind of internal-combustion engine that provides according to the utility model, include cylinder block and crankcase, described cylinder block is positioned at the top of body, described crankcase is positioned at the bottom of body, be provided with the shelf-shaped structure in the described crankcase, be provided with all-in-one-piece crankshaft main bearing hole with the crankcase two ends on described shelf-shaped structure, the center of circle in described crankshaft main bearing hole is on same axis.

The utility model also has following supplementary features:

Described shelf-shaped structure is three;

The diameter minimum in the crankshaft main bearing hole of described crankcase front end, the diameter in the structural crankshaft main bearing of described shelf-shaped hole is identical, the diameter maximum in the crankshaft main bearing hole of described crankcase rear end.

The body set of the internal-combustion engine that provides by the utility model, the crank spindle hole is a monolithic construction, does not cut apart, and makes crankshaft axis on horizontal position corresponding on the body best rigidity be arranged, effectively improved the torque resistant ability of body, the bent axle supporting part also is not easy to occur localized cracks.

Description of drawings:

Fig. 1 is the schematic representation of the suffered load of body of internal-combustion engine;

Fig. 2 is a crankshaft bearing cap schematic representation in the prior art;

A kind of integrated type body set overall schematic of Fig. 3 for providing according to the utility model;

Fig. 4 is the bottom schematic view of Fig. 3;

Fig. 5 is an A-A generalized section among Fig. 3;

Fig. 6 is a B-B generalized section among Fig. 3.

Embodiment:

An embodiment of the present utility model describes with reference to Fig. 3-6:

Referring to Fig. 3-Fig. 6, present embodiment is to be example with four-stroke four-cylinder diesel engine in upright arrangement, body 1 includes cylinder block 2 and crankcase 3, cylinder block 2 is positioned at the top of body 1, crankcase 3 is positioned at the bottom of body 1, be provided with shelf-shaped structure 4 in the crankcase 3, shelf-shaped structure 4 is three, on the shelf-shaped structure 4 and crankcase 3 two ends are provided with all-in-one-piece crankshaft main bearing hole 5, main bearing hole 52 on the shelf-

shaped structure

4,53,54 diameter is identical, the main bearing hole 51 diameter minimums of crankcase 3 front ends, the diameter maximum of the main bearing hole 55 of crankcase 3 rear ends, the crankcase so that crankshaft system can normally be packed into, crankshaft

main bearing hole

51,52,53,54,55 the center of circle is on same axis.

When mounted, piston and connecting rod are installed in the cylinder block, bent axle is by the crankshaft main bearing hole of the crankcase rear end internal body of packing into, the main journal of bent axle is supported in the main bearing hole at shelf-shaped structure middle part, the first road main journal of bent axle is supported in the crankshaft main bearing hole of crankcase front end, and the bottom of crankcase is connected with oil sump.

The foregoing description is only for the usefulness that the utility model is described; and be not to restriction of the present utility model; the those of ordinary skill in relevant technologies field; under the situation that does not break away from spirit and scope of the present utility model; can also make various variations and modification; therefore all technological schemes that are equal to also belong to category of the present utility model, and scope of patent protection of the present utility model should be limited by each claim.

Claims

1. the body set of an internal-combustion engine, include cylinder block (2) and crankcase (3), described cylinder block (2) is positioned at the top of body (1), described crankcase (3) is positioned at the bottom of body (1), it is characterized in that: be provided with shelf-shaped structure (4) in the described crankcase (3), two ends last in described shelf-shaped structure (4) and crankcase (3) are provided with all-in-one-piece crankshaft main bearing hole (5), and the center of circle in described crankshaft main bearing hole (5) is on same axis.

2. the body set of internal-combustion engine as claimed in claim 1, it is characterized in that: described shelf-shaped structure (4) is three.

3. the body set of internal-combustion engine as claimed in claim 2, it is characterized in that: the diameter minimum in the crankshaft main bearing hole (51) of described crankcase (3) front end, the diameter in the crankshaft main bearing hole on the described shelf-shaped structure (3) (52,53,54) is identical, the diameter maximum in the crankshaft main bearing hole (55) of described crankcase (3) rear end.