RU2772007C2 - Diesel engine with discrete power take-off - Google Patents

Abstract

FIELD: optical instrumentation.

SUBSTANCE: invention can be used in free-piston engines. The free-piston engine contains a vertically positioned working cylinder (1) with a free piston (2) inside and an interacting inner surface with a buffer cylinder coaxial with it (3). The power take-off mechanism is connected to the buffer cylinder (3) by a two-link pipeline (4) capable of performing rocking movements. The power take-off mechanism is made in the form of a cylinder (5) with a piston (6) inside and with a rod (7) coming out through one of the end walls of the cylinder. In the power take-off mechanism, at the average position of the piston (6), the cylinder (5) cavity with the rod (7) is filled with compressed air with a pressure about half that of the other cylinder (5) cavity.

EFFECT: simplifying the transmission of power.

1 cl, 1 dwg

Description

The invention relates to heat engines operating on a diesel cycle, namely to free-piston engines.

Free-piston engines are known (patents RU No. 2584769, 2653344, 2665783, 2667818) which, due to the almost complete expansion of the combustion products (provided by a large stroke of the free piston), have a very high efficiency, but power take-off through the rotational movement of the crank, although it is the most common, but not is always optimal. In particular, the drive of reciprocating pumps and compressors does not require an intermediate conversion of the translational movement of the working body of the heat engine (piston) into the rotational movement of the crank.

The purpose of the invention is to simplify and improve the efficiency of power transmission from its manufacturer (diesel engine) to the consumer (piston pumps, compressors, etc.)

This goal is achieved by the fact that in a free-piston engine containing a vertically located working cylinder with a free piston inside and an interacting inner surface with a buffer cylinder coaxial with it, as well as a power take-off mechanism connected to the buffer cylinder by a two-link pipeline capable of performing rocking movements, according to the invention, the mechanism The power take-off is made in the form of a cylinder with a piston inside and with a rod going out through one of the end walls of the cylinder. At the same time, in the power take-off mechanism with an average piston location, the cavity of the cylinder with the rod is filled with compressed air with a pressure approximately half that in the other cavity of the cylinder.

In FIG. shows an engine with a power take-off in a longitudinal section.

The diesel engine (hereinafter referred to as SPT) contains a working cylinder 1 with a free piston 2 inside (patent RU No. 2637587) interacting with its inner surface with a buffer cylinder 3. The latter, using two-link pipelines 4, is connected to the power take-off mechanism (hereinafter POM), which contains cylinder 5 with a piston 6 placed in it with a rod 7 going out through one of the end walls of the cylinder 5. The SPT is suspended from any upper structures using vacuum cylinders 8 (many options). A power consumer 9 is connected to the rod 7 (option - a piston pump).

SPD together with MOM act as follows. In a working SPT (the technological process is described in the basic patent RU No. 2584769), the free piston 2, making longitudinal multidirectional movements in the working cylinder 1, creates pressure fluctuations of compressed air in the buffer cylinder 3 and which are transmitted through pipelines 4 to the MOM. In the latter, pressure fluctuations of compressed air cause longitudinal multidirectional movements of the piston 6 in the cylinder 5 together with the rod 7 attached to it. The longitudinal movements of the working cylinder 1 arising during the operation of the SPT are damped by the vacuum cylinders 8 of the suspension system (see patent RU No. 2653344). Longitudinal movements of the rod 7 are transmitted to the power consumer 9.

Since the working stroke and speed of movement of the rod 7 is many times less than the stroke and speed of movement of the free piston 2, it becomes possible to simply (without using an intermediate crank mechanism) and efficiently (i.e. with high efficiency) transfer power to various consumers with linear movement of the working bodies, especially piston pumps.

Claims (1)

Free-piston engine containing a vertically located working cylinder with a free piston inside and an interacting inner surface with a buffer cylinder coaxial with it, as well as a power take-off mechanism connected to the buffer cylinder by a two-link pipeline capable of rocking movements, characterized in that the power take-off mechanism is made in in the form of a cylinder with a piston inside and with a rod extending outward through one of the end walls of the cylinder, and in the power take-off mechanism with the piston in the middle position, the cavity of the cylinder with the rod is filled with compressed air with a pressure approximately half that in the other cavity of the cylinder.

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