SU916773A1 - Potary-piston engine housing - Google Patents

Description

The invention relates to engine construction, namely to rotary-piston internal combustion engines with a tro.choidal working chamber.

Known rotary-piston internal combustion engines with a trochoidal working chamber, contain zones with different numbers and pitch of cooling fins, a thin-walled casing adjacent to the tops of the fins and provided with supply and exhaust headers with cooling ports formed shell [1].

A disadvantage of the known engine is low cooling efficiency due to the uneven supply of cooling medium to the cooling channels.

Nel invention - improving the efficiency of cooling.

This goal is achieved by the fact that the number of windows inlet and outlet of the cooling medium and their pitch in the collectors correspond to the number and pitch of the cooling channels in each area of the housing.

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FIG. - 1 schematically shows the housing of a rotary-piston engine, cross section; in fig. 2 - the same, longitudinal section (on a shaft); in fig. 3 is a scan of the engine housing, top view: FIG. four -

^{5 is a} section A-A in FIG. 3 (on the manifold coolant outlet).

The housing 1 of the rotary-piston internal combustion engine with a trochoidal paradise booth chamber -2 is equipped with a liquid cooling jacket containing zones with different numbers and pitch of cooling fins 3 and 4, to the tops of which is attached a thin-walled casing 5. The shell 5 is equipped with a cooling supply collector 6 ¹⁵ environment and collector 7 removal of the environment.

The cooling channels 8 are formed by the walls of the ribs 3 and 4 and the inner surface of the shell 5 and are connected to the collectors 6 and 7 by the windows 9 of the entrance and the windows 10

20 coolant outlets, located next to each other in a thin-walled shell 5. The number of windows 9 inlets and windows 10 outlets in each row and their pitch in the collectors 6 and 7 correspond to the number and pitch of channels 8 in

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each area of the housing. If necessary, several rows of windows 9 and 10 can be provided. At the junctions of zones with different numbers and pitch of cooling fins 4, transverse grooves 11 are made, connecting all cooling channels 8, regardless of the pitch and number of channels in each zone.

In the process of operation of the internal combustion engine cooling of the housing 1 is as follows.

The cooling medium through the supply manifold 6 and the inlet port 9 enters the cooling channels 8 with a small pitch and moves in the direction of the groove 11, in which the cooling medium is redistributed and supplied to the cooling channels 8 (with a large pitch). The spacing of channels 8 and their number in each zone of the hull are performed in accordance with the actual heat release at each site of the epitrochoid. The removal of the cooling medium from the channels 8 with a large pitch is carried out through the windows 10 of the outlet of the cooler and the collector 7 of the removal of the medium.

Improving the cooling efficiency of the hull is achieved by reducing the fin pitch and increasing the number of ribs that increase the overall surface of the cooling channels. This design of the body with a relatively small height and thickness of the ribs also has sufficient strength and rigidity.

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Claims (1)

Claim The body of a rotary-piston internal combustion engine with a trochoidal working chamber, mainly liquid cooling, containing zones with different number and pitch of cooling fins, a thin-walled casing adjacent to the tops of the ribs and equipped with cooling inlet and outlet manifolds 15 with medium inlet and outlet windows and channels cooling, formed by ribs and shell, characterized in that, in order to increase cooling efficiency, the number of entry and exit windows of the cooling medium and their pitch in the collectors correspond to Islu and step cooling channels in each body area.