DE3810592A1 - Geared heat engine - Google Patents

Abstract

The geared heat engine according to the invention continuously converts heat energy into rotational mechanical energy by means of at least three different gear pairs, coupled torsionally rigid, as valveless and portless rotary displacer. The feeding of a gas (combustion air) known per se through two gears engaging with one another in a housing and the smaller compression gears, coupled torsionally rigid to the former, and the larger work-performing, highly heat-resistant gears connected on the output side can be manufactured inexpensively with adequate accuracy and service life by known production methods. The common pump and heat engine housing can likewise be made as cost-effectively as the gears from known materials such as steel, metals (aluminium, magnesium) and ceramic, on known machine tools by metal-cutting and chipless processes. The efficiency is significantly improved by heat insulation and the secondary performance of work by the combustion gas, by the additional connection of one or more geared heat engines on the output side, arranged torsionally rigid on the same output shaft and connected by means of gas pressure pipes. The very high speed possible results in lower power-to-weight ratios and greater utilisation of energy than in a comparable spark ignition or diesel engine.

Description

The above invention represents a rotating, valveless heat engine, which continuously supplies heating energy in the form of gas, hydrogen or liquid fuel and oxygen to a heating process and, after intensive mixing and ignition by combustion heat under gas pressure increase, delivers a power-generating torque through the gear displacer to the output shaft . The heat of combustion causes a strong increase in gas pressure in the heating tube ( 10 ), which presses as tooth surface force on the opened teeth of the pair of wheels ( 8 ). Due to its larger dimensions than that of the pair of wheels ( 2 ), there is excess torque on the shaft ( 1 ), reduced by the reaction torque on the pair of wheels ( 2 ) and by the opposing compression torque on the pair of wheels ( 15 ). After the work performed in the pair of wheels ( 8 ), the combustion gas can be fed to downstream gear pairs for further work-related relaxation, the dimensions of which must increase in the amount of gas relaxation relative to the upstream pair of gears. To reduce the friction between gears and housings, the curvature overlap ( 20 ) is limited to three to four teeth. Between the water curvature cover are the air spaces ( 16 ) which have a larger radius of curvature than the tip radius of the gear. In the housing ( 7 ), this is analogous to the gas pressure chambers ( 19 ) in which post-combustion takes place under increased pressure.

The gear heat engine according to the invention consists essentially of the three gear pairs ( 2-2 a) , ( 8-8 a) , ( 15-15 a) , which are rotationally rigidly coupled to one another by the output shaft ( 1 ) and are rotatable and pressure-tight in the Housings ( 5 ), ( 7 ) and ( 17 ) are mounted. Housing ( 17 ) is screwed to housing ( 5 ) and this is pressure-tightly screwed to intermediate plate ( 6 ) and housing ( 7 ).

Since the dimensions of the three pairs of gears differ with regard to pitch, number of teeth and width, the corresponding gears are by means of shafts ( 3 ), ( 9 ), ( 18 ) for gears ( 2 a) , ( 8 a) , ( 18 a) rotatably mounted.

By rotating the output shaft ( 1 ), the gear pair ( 15 ) promotes combustion air under pressure by compression to the smaller gear pair ( 2 ). The latter presses the compressed combustion air into the heating pipe ( 10 ). Flammable heating fluid is injected into this with the help of the injection nozzle under external pressure and mixed with the compressed air is brought to ignition by the spark plug ( 11 ). After that, the combustion runs continuously without ignition.

Since work relaxation can take place in several stages, improved combustion will result in fewer pollutants and achieve better energy utilization.

Through the use of heat-resistant materials such as hot work steels or ceramics for gears and housings becomes thermal and mechanical efficiency also increased. Due to the low friction the ceramic parts with the tightest sealing gap can have very high speeds be achieved so that the room capacity can be further increased.

Subject index

1 output shaft
2 pairs of gears from 2 wheels 2 and 2 a
3 intermediate shaft
4 feather key
5 Housing for gear pair 2
6 intermediate plate
7 Housing for gear pair 8
8 pair of gears from 2 wheels 8 and 8 a
9 wave
10 heating tube
11 spark plug
12 combustion gas pipe
13 intake pipe
14 injector
15 gear pair compression level order. from 2 wheels 15 and 15 a
16 airspaces
17 housing
18 wave
19 gas pressure chamber
20 curvature coverage
21 Combustion air pipe
and 4 pictures

Claims (2)

1. Gear thermal engine consisting of known details such as:
Output shaft ( 1 ), gear pairs ( 2, 8, 15 ), shafts ( 3, 9, 18 ), parallel keys ( 4 ), rotatable, stationary and pressure-tight in the housing ( 5, 7, 17 ) and housings ( 5 ) and ( 7 ) screwed pressure-tight by means of an intermediate plate ( 6 ), shafts ( 3, 9, 18 and 1 ) rotatably mounted in the housings ( 5, 7, 17 ) and characterized in that they consist of three differently dimensioned gear pairs ( 15, 2, 8 ) there is that a gear of these gear pairs is rotatably arranged on the output shaft ( 1 ), that two gear pairs act as a continuous suction and compression stages due to their under different displacement size at the same amount of rotation angle that the smaller gear pair also serves as a rotating reaction combustion gas pressure support That compression gas pressure arises from the double action of the small pair of gearwheels and work-producing Ver combustion gas pressure is built up in the heating tube ( 10 ) and in front of the tooth flank surfaces of the third pair of gearwheels can be that the larger dimension of this third gear pair ( 8 ) under the effect of the combustion gas pressure while overcoming the reaction torque of the gear pair ( 2 ) and the compression torque of the gear pair ( 15 ) causes an excess power torque to the output shaft that all gears and Ge housing sliding zones are made of known ceramics that the gears are helically toothed to improve the engagement, that the gears are standardized with respect to pitch, flank shape and pressure angle for cost-saving manufacture and interchangeability, that the Engagement angle is 15 ° and the tooth height is three times the pitch module that the gas Spaces ( 16 ) have a larger radius than the head radius of the gears that in the heating tube ( 10 ) by means of several injection nozzles ( 14 ) different heating fluids such. B. alcohol, ethanol, heavy fuel oil, liquid hydrogen can be injected. 2. Gear thermal engine according to main claim 1, characterized in that the continuous conversion of thermal energy into mechanical rotational energy is initiated by a sufficiently long starting torque attacking the output shaft ( 1 ).