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The actuator for the engine with external heat supply

The actuator for the engine with external heat supply
IPC classes for russian patent The actuator for the engine with external heat supply (RU 2035607):
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(57) Abstract:

Usage: engine area, dealing with engines with external heat supply with a closed loop. The inventive actuator for engine with external heat supply contains two shafts 4 and 5 with synchronous rotation, kinematically connected with the working piston 2 and the piston-displacer 3, the intermediate wheel 17, is made with two toothed crowns, internal and external, of which the inner crown is associated with the gear 6 of one shaft and the external gear 7 other shaft, and coupling shaft with the working piston is made through the cranks 11 and 12, each of which is connected through the connecting rods 13 and 14 with a finger beam 15 of the working piston. The connection shaft with a piston-displacer is made in the form of Cams 8 and 9, each of which is located on one of the shaft and communicates with the piston-displacer through the respective spring-loaded support plate 19 and 20 and the rocker, United with the rod of the piston-displacer. The use of Cam support plate and the rocker arm for connection shaft with a piston-displacer optimal law changes the volume of the hot cavity of the cylinder of the engine and thereby improve efficiency. 2 C.p. f-crystals, 3 ill.m heat (DWPT).

Known engines with external heat supply, containing two shafts for synchronous rotation, connected by means of gears and provided with cranks, each of which is connected through the connecting rods with your fingers traverse coaxial pistons: working and piston-displacer shifted in phase angle.

This motor has higher mechanical losses associated with the fact that when the engine is at a certain point in time, the pressure under the piston becomes higher than the pressure above the piston and torque changes its sign. Gear of one of the crankshafts, which is not connected with the toothed wheel output shaft, rotates in the direction opposite to its rotation, choosing the clearance between the gears on the crankshafts. Gear associated with PTO, remains in the same position due to the inertia of the flywheel. When this happens bias traverse, causing increased friction in the nodes DITCH, thereby reducing mechanical efficiency.

In addition, these engines have relatively low life due to uneven wear of the gears on the crankshafts, since one of them is additionally included in the gear output shaft, with a force before which the train engine with external heat supply, equipped with an intermediate wheel, made with two toothed crowns: internal and external, and the internal crown connected with a shaft gear and the external gear of the other shaft (prototype).

The disadvantage of this device is that it does not allow for the optimal law of change of volume of the hot cavity of the cylinder of the engine, and hence, lowers the efficiency of its work. This is due to the fact that the device is in the form of rhombic linkage mechanism is not able to accurately reproduce the desired movement of the displacer, the corresponding optimal law changes the amount of hot cavity. In addition, the device has a complex structure, since a large number of rods and joints, which increases the dimensions, especially the height.

The aim of the invention is to increase efficiency by ensuring optimal law of change of the volume of the hot cavity of the cylinder of the engine, as well as simplifying the design and size reduction.

To achieve this goal in the drive for the engine with external heat supply, containing two shafts for synchronous rotation, kinematically connected with the working piston and the piston-vitezne is it one shaft, and the external gear of the other shaft, the connection of shafts with a working piston made through the cranks, each of which is connected through a connecting rod with a finger traverses the working piston, the connection shaft with a piston-displacer is made in the form of Cams, each of which is located on one of the shaft and communicates with the piston-displacer through the spring-loaded base plate and the arm, pivotally connected with the rod of the piston-displacer, Cams provided with a limiting flange and base plate in contact with the surface between the ribs.

The invention is illustrated by drawings, where Fig. 1 shows a kinematic diagram of the device of Fig. 2 section a-a in Fig. 1; Fig. 3 node I in Fig. 2.

The engine consists of a cylinder 1 in which is placed the working piston 2 and the piston-displacer 3. The drive contains the shafts 4 and 5, on which is rigidly fixed gears 6 and 7 and the Cams 8 and 9 with restrictive shoulder 10. The shafts 4 and 5 are provided with cranks 11 and 12, each of which is connected through the connecting rods 13 and 14 with the fingers of the bar 15 and the rod 16 of the working piston 2. Gears 6 and 7 are in engagement with the intermediate gear wheel 17, is made with two toothed crowns, internal and external, and is Amnesty. With Cams 8 and 9 interact with the supporting plates 19 and 20 are rigidly connected with the arm 21, which is connected with the rod 22 of the piston-displacer 3. The supporting plates 19 and 20 are biased to the core surfaces of Cams 8 and 9 by means of a spring 23 mounted between the thrust bracket 24 and the rocker 21. The shafts 4, 5 and 18 mounted in the bearings 25. The rocker 21 is connected with the rod 22 of the piston-displacer 3 through a hinge 26.

The engine works as follows. With the expansion of the heated gas piston 2 and the piston-displacer 3 moves down, and the work makes only the piston 2, as the gas pressure on both sides of the displacer is approximately the same. The reciprocating movement of the piston 2 is converted through the yoke 15, the connecting rods 13 and 14 and the cranks 11 and 12 in the rotational movement of the shafts 4 and 5, which through gears 6 and 7 and the intermediate gear 17 transmit the rotation shaft 18 of the PTO. During the compression stroke gas piston 2 will move upwards, and the corresponding movement will make United with him the above links. The required optimal law of change of volume of the hot cavity of the cylinder is provided by a Cam, because pornoscheme Cams 8 and 9, specifies the law of motion of the piston-displacer 3. The placement of the supporting plates 19 and 20 between the shoulder 10 of Cams 8 and 9 eliminates the possibility of breaking the orientation of the support plates on Cams, and a rigid connection of the support plates 19 and 20 with the arm 21, which hinge 26 is connected with the rod 22 of the piston-displacer 3 and simultaneously biased by a spring 23 and a thrust bracket 24, allows the process to ensure equal load on the Cams 8 and 9 and the supporting plates 19 and 20 and the constant contact of the latter with the profiled surfaces of the Cams 8 and 9.

The proposed device allows you to accurately reproduce the desired movement of the piston-displacer and thus ensure optimal law of change of volume of the hot cavity of the cylinder of the engine, and therefore, increase its efficiency, in addition, simplifies the design and reduces the height.

1. The ACTUATOR FOR the ENGINE WITH EXTERNAL HEAT SUPPLY, containing two shafts for synchronous rotation, kinematically connected with the working piston and the piston-displacer, intermediate wheel, made with two toothed crowns, internal and external, of which the inner crown is associated with one gear shaft, and the which is connected through a connecting rod with a finger traverses the working piston, characterized in that, to improve efficiency, communication shaft with a piston-displacer is made in the form of Cams, each of which is located on one of the shaft and communicates with the piston-displacer through the spring-loaded base plate and the rocker, United with the rod of the piston-displacer.

2. Drive under item 1, characterized in that the connection of the rocker arm with the rod of the piston-displacer is made in the form of a hinge.

3. Drive on PP.1 and 2, characterized in that the Cams are made with restrictive flange and base plate in contact with the surface enclosed between the ribs.

 

 

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