The field of application for the RotaTorque motor cannot easily be defined. Like Otto-, diesel, and wankel engines the RotaTorque can be built in various dimensions. The RotaTorque can replace a model making motor as well as a marine engine. It can drive a lawn mower or can help a racing car to victory.


A good chance for a quick large scale development I see in its use in the automobile industry. The increasing oil price and the more stringent emission regulations are forcing the automobile industry to develop more complex and more expensive motors. The resulting advantages in the consumption are often compensated through a higher weight of the automobile or through the necessary increase of engine power. A novel new power train, with a revolutionary and simple construction, which needs significantly less fuel to be operated, should be of interest to the manufacturers of automobiles.
I wish, that driving an automobile may become more affordable and that we do not harm our environment through an even higher use of fossil fuels.


The RotaTorque as a hybrid power train, seems to me to be the ideal power train for the near future. The lower speed range, the low vibrational operation and the compact size makes the RotaTorque an ideal alternative for the use as a generator,


Another ideal and quickly utilisable use lies in the heat- power ratio. The compact and long lasting RotaTorque produces in contrast to a boiler not only heat, it can also produce cheap electricity over a generator. Environmentally friendly through natural gas, or bio gas or even bio ethanol.

Out of which material is the RotaTorque constructed?


The first prototypes, with the exception of the driving shaft, have built out of graphite. Graphite is a fascinating material. Dependent upon it's composition and treatment, it can easily be trimmed for various usages. Graphite has extremely good ware resistance properties and is more stabile at high temperatures than steel or aluminum.
The information on of graphite was so considerable, that I always had to and could rely in the expertise of the SGL- Carbon group. In a large scale production the RotaTorque will surely have to be constructed using both graphite and steel!


Why should the RotaTorque consume less fuel?


In contrast to a reciprocating piston engine the expansion energy of the burned air- gas mixture over the extended sliding vanes is directly converted into rotation. Even if the vane surface looks relatively small, they separate the total cylinder capacity into smaller segments. The resulting lever arm is much higher than with a comparable reciprocating piston engine. Based on calculations the generated torque per litre hump volume can reach up to 300 Nm. Non pressurised Otto- engines can only reach 100- 110 Nm per litre hump.
The higher the torque of a motor produced from a given hump volume, the less fuel it will need.


O.K. this is an controversially discussed topic among specialists in the field. In dubio pro reum! Please do convince me of the opposite or help me to prove my statement.


Without any doubt I can say, that the RotaTorque shows significant lower mechanical ware as compared to conventional 4 stroke piston engine.


How is the RotaTorque cooled?


Well my prototypes all had a 'Gardena- garden hose cooling system'. I had placed my motor on a mounting plate and poured water over him for cooling. The water was collected in a tub beneath the motor.
A commercially available motor will have to have cooling channels in it's hump ring as well as in the laterals, comparable to a reciprocating piston engine. The rotor will have to have a full length drill in it's drive to enable cooling through an appropriate coolant.

Catalogue of arguments speaking for the RotaTorque:


1.Expansion energy is directly converted into rotation.
2.simple construction with only 4 different components
3.simple construction, experience can be applied to every possible frame size
4.cost- effective large scale production
5.compact, circular construction, with high weight to power ratio
6.absolutely oil- free, constructed for lubrication free dry running
7.large contact surface between rotor and laterals without extra coolant for optimal transport of heat
8.mature technique, known from rotary vane compressor since 1920
9. with less then 700 gramm per KW, extremely light weight
10. easy maintenance, through turning or exchange of the sliding vanes
11.four stroke principle, ensures clean exhaust fumes
12.minimum mechanical ware, no valve system, no oil system
13.components for the gas- air mixture, ignition, and treatment of exhaust fumes can be adapted from the Otto- engine
14.high torque and resulting low fuel consumption
15.extremely constant torque through several strokes per rotation
16.through low oscillating mass, no balance necessary
17.unique low vibrational drive (With double ignition almost no vibration!)
18.extremely low pulsation of the intake, continuous flow of gas ensures good charge
19.varying volumes for intake and expansion volume possible through hump ring
20.maximum sliding vane hump in the area of greatest combustion pressure
21.multi disc operation on one drive possible without any problems
22.In multi disc operation added building blocks can follow or can be engaged
23.through segmental loading with fuel, cut- back of power possible
24.no mix of different materials, all mechanical parts in the 4 stroke process with the same coefficient of expansion
25.Graphite parts with best tribologic characteristics und programmable heat flow
26.optimal thermo shock resistance through graphite without loss of strength at elevated temperatures
27.Circular construction optimal for a miniature coupling to a starting generator
28.To ensure constant engine speed only one glow plug is necessary. The weights of the sliding vanes can be designed for an optimal sealing at a constant centrifugal force.