Variable-speed, lubrication-free piston engines can be integrated directly into the drive train or also electrically as a super-hybrid version. Precise, clear engine timings with high cross sections and expansion ratios up to 40:1 at max. fluid temperatures of 200 - 300°C can be created thanks to camshaft-free gas exchange control. With wet releasing ORC medium ethanol, a thermal efficiency of over 20% can be achieved at up to 40 bar at a single stage without a recuperator, and turbines, scroll and screw machines are therefore markedly superior. Thanks to the free orientation, the engines can also be placed horizontally in the frame. Since no separation is required between the ORC and the lubricating medium, seal systems are saved and compact dimensions and low weight are achieved.

ethanol steam piston engines:

As an interdisciplinary team, we rely on 17 years’ experience in the field of research and development of WHR systems, of which 10 years’ exclusive development for VW’s Group research in the passenger car field. As pioneers with ethanol (since 2004) as an ORC medium and with over 25,000 operating hours of experience in ORC industrial plants, we have exclusive practical knowledge. The key components have been developed, tested and operated by us. The most important one, the steam engine, has also been implemented in the versions with a crank or wobble plate drive and are used today in the mobile as well as stationary area. We have particular know-how in material selection, tribology of lubrication-free systems, of gas exchange control and of plant and control technology.

gian ethanol steam piston engines

use:

Fast and widespread use in trucks significantly reduces energy consumption up to 10% and therefore contributes substantially to the adherence to the prescribed CO 2 fleet consumption in the next few years. This technology further provides crucial consumption reduction also for electric hybridisation or for the use of biogenic fuels. Along with the market advantage, sanctions for not adhering to the fleet consumption can be avoided. The user will already benefit from the permanent reduction of operating costs in the first few years.