CS214379B1 - Cylinder Head Air Cooled Engine - Google Patents

Abstract

The invention relates to the automotive industry and solves the problem of creating channels around the injection nozzle opening and its joint casting with expansion members. The essence of the invention lies in the fact that the channel is created as a closed hollow body, which in its shape copies the shape of the intake and exhaust channels and forms a compact shell with expansion members, cast around the injection nozzle opening, while the channel also serves for placement on the mold mandrel during casting. The invention is not used in other fields. The invention is best characterized in Fig. 1.

Description

(54) Cylinder head of air-cooled engine

The invention relates to the automotive field and solves the problem of forming channels around the injection nozzle opening and co-embedding it with expansion members.

SUMMARY OF THE INVENTION The invention is characterized in that the duct is designed as a closed hollow body which, by its shape, follows the shape of the intake and exhaust ducts and forms with the expansion members a compact belek embedded around the injection nozzle hole. .

The invention is not used in other fields.

The invention is best characterized in Fig. 1.

214 379

214 379

The invention relates to a cylinder head of an air-cooled engine. Its purpose is to improve the technology of manufacturing the space for cooling the injection nozzle and to improve the positioning of the dilators in the casting of the cylinder head.

In the known prior art, a space is formed in the cylinder head body around the injection nozzle, which surrounds the intake and exhaust ports, between which it approaches the bottom. This space is pre-cast in the cylinder head and is closed by an insert having at least two projections along its circumference, between which recesses copy its shape against the channels. A channel is thus provided for the passage of the coolant oil at the locations closest to the bottom of the cylinder head, thereby ensuring that the most heat-loaded point of the cylinder head is surrounded. The insert is fixed in the cylinder head by a plug, which is either crushed or screwed as mentioned, for example, in MS. AO 198.359. The expansion members are mounted by means of a strip-shaped holder of which the expansion members are an integral part. The holder is wrapped around one of the cores and its feet by its elasticity and rests on the other of the cores. Another five is secured against a shift in the winning of one of the cores, as is mentioned, for example, in MS. AO 196.200.

The disadvantages of the prior art are the technological complexity of manufacturing, where it is necessary to preform the space around the injection nozzle opening, to produce a complicated shape insert and a plug for fastening the insert to the cylinder head. ft * on the mounting of the expansion elements, it is necessary to produce a holder with a grip on the core.

The above-mentioned disadvantages are eliminated by the cylinder head of the air-cooled engine, in the body of which a set of distribution channels, collecting ducts and smoothing spaces for the coolant passage is formed and housed by expansion members in order to reduce unfavorable thermal dilatations. For the injection nozzle, it is designed as a closed hollow body which, by its shape, follows the shape of the intake and exhaust ducts and forms a compact unit encapsulated by the dilatation members around the injection nozzle aperture.

Advantages of the cylinder head according to the invention reside in the simplification of the technology of producing the cooling space around the injection nozzle and the placement of the expansion members during casting. There is no need to cast the space and then close the liner. It is not necessary to produce a separate holder for the mounting of the expansion members. The channel 1 of the expansion members forms a compact assembly which, when casting, is deposited together by means of a channel on the ingot mold and the die and at the same time around the opening for the injection nozzle.

An exemplary embodiment of a cylinder head of an air-cooled engine according to the invention is shown in the accompanying drawings, wherein Fig. 1 shows the cylinder head in front view and channel and expansion members; Fig. 2 shows a plan view of the head according to Fig. 1; and dilatation members.

The cylinder head 1 is provided with an aperture 2 in which a nozzle 1 is disposed. Around the aperture 2 is formed a channel 6 into which a channel 6 extends from the space 6 and from which channel 2 leads to an opening 8 which is connected by channel 2 and 10 The duct 4 around the orifice 2 of the injection nozzle 1 is formed as a closed hollow body which, by its shape, follows the shape of the intake and exhaust ducts (nszakreeleno) and forms with the expansion members 11. a compact assembly which is cast around the orifice 2 for the injection nozzle j when casting the head 1. The duct j serves simultaneously for casting on the throat of the mold (not curled).

Motor pressure oil flows by known means from the engine casing (unrelated) into the space 5 from which it is led through a channel 6 into a channel around the injection nozzle aperture 2 and is discharged through the aperture 5 back into the engine housing. From the head and cylinder space 10, oil is drained through channel 2, which drips from the lifting rods (not shown) and through the opening 8 back into the engine housing.

Claims (1)

OF THE INVENTION A cylinder head of an air-cooled engine having a manifold, collecting ducts and cooling chambers for cooling fluid passage therethrough and receiving expansion members to reduce adverse thermal dilatations, characterized in that the channel (4) around the opening (2) For the injection nozzle (3) it is designed as a closed hollow body, which by its shape follows the shape of the intake and exhaust ducts and forms and the expansion members (11) a compact unit, encapsulated around the opening (2) for the injection nozzle (3).