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Expanders Engines Hydraulic Motors Compressors Pumps

Real Progress Through Continuous Research and Development

Vengeance Power Inc.

Recent Developments

Dry Seal & Bearing Design

[Click image to see video]

First run test of our new dry internal seal and bearing design Expander Motors.

Dry seals and bearings have the benefit of oil-free operation in extreme heat or cold conditions where oil lubricant would fail.  Another benefit is no need to separate lubricant oil from the working fluid.  This is beneficial when using Steam or other fluids such as ORC refrigerants that do not work well with oil.

Seen here is a small production-ready model running on a tank of compressed air.  We charged up the tank and shut off the compressor.  The stored air drives the Expander as the pressure drops.  This is ideal for pressure-letdown applications such as with Natural Gas.   As you can see, our Expander has the torque to drive this load immediately from a dead stop with no problem.  It is connected to a low rpm synchronous 3-Phase AC permanent magnet generator with a direct 1:1 speed coupling.  The live load consists of 36 x 100-watt real incandescent bulbs, not LEDs.

Natural Gas Pressure Letdown

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This is a high speed, pre-ship test for a customer to use in Natural Gas Pressure Letdown applications to drive their high speed generator coupled directly without a gearbox. The Expander can be easily throttled for any desired RPM.

Vengeance Expander Gensets

Now offering our newest Expander Genset combinations, custom designed and built for your application

Prices start as Low as $650 USD / KW

Our Genset units can be powered by any fluid at any pressure and temperature delivering:

  • Robust, durable, on-demand high torque performance
  • Lower up-front, operating & maintenance costs, shorter delivery times, faster return on investment
  • Easy throttling for optimal power output with varying pressures

Choose your driving fluid:

  • Wet/Dry Steam
  • Combustion Gasses
  • Natural Gas Pressure Letdown (NGPL)
  • Compressed Air for Compressed Air Energy Storage & Power (CAESP) applications
  • ORC Fluid/Refrigerants (R245FA, R410A, R744, R290, R601A, R728…)
  • Other fluids (Benzene, Toluene, Cyclopentane, Propane, Ammonia, Ammonia/Water for Kalina Cycle)
  • Supercritical fluids such as CO2
  • Hydraulic fluid – Yes, it can also run as a tremendously powerful hydraulic motor!

Choose Your Generator

  • We also offer custom designed frame mounted Generator kits
  • Rugged welded steel frame for lifting and transport
  • Use your own engines – give us your specs and we will make it fit
  • 50Hz / 60Hz, 3-phase / 1-phase, AC / DC, 200-600Volt
  • Alternator, self-starter, standalone multi-pole PMG types
  • 5, 10, 20, 50, 100, 250, 500, 1000kW output
  • 300 – 3600 RPM
  • Make Power Now!!

[Click image to see video]

Our latest 20kW class Expander/Genset unit seen here spooling up on compressed air. Voltmeter is attached to phase 1-2 power leads showing AC volts. Shaft speed is measured by a hand-held laser RPM meter and reflective tape on the shaft coupler. Shown here is a multi-pole Permanent Magnet Generator, self-powered, 240V AC 3Phase 50Hz 500RPM with over 90% electrical efficiency. We have plenty of torque for low speed power with a simple, direct 1:1 drive speed coupler. No more annoying gearboxes!

New HV-Core Series Models

This test demonstrated one of our latest designs for taking low pressure and producing high torque in the most efficient and inexpensive way. The engine was operated on compressed air at only 125 psig without a muffler or electronic controls. This new design is capable of accepting pressures in excess of 3000 psig and temperatures exceeding 500 Deg.C. It can also handle cryogenic conditions. Power output range and size can easily be scaled to any requirement. Moisture condensing inside the engine is no problem for the materials or the cycle at any speed. High torque and low RPM translates into greater reliability and lower manufacturing and maintenance costs. With fewer simple moving parts, the costs of manufacturing and ownership are unmatched by any competitor in the industry with simple, cheap and fast overhauls on-site.

The Engine can run with any type of working fluid without the requirement of oil including:

  • Hot gasses for combustion applications
  • Dry or Wet Steam for Rankine Cycle applications
  • Compressed gasses such as natural gas for pressure letdown (NGPL) applications
  • Air for CAESP (Compressed Air Energy Storage & Power) applications
  • Hydraulic fluid for heavy industrial applications
  • ORC fluids such as natural and synthetic refrigerants for WHR (Waste Heat Recovery) applications
  • Supercritical single-state fluids and Stirling Cycles eliminating the need for condensers
Waste Heat Recovery – Organic Rankine Cycle (ORC)

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Our first prototype Waste Heat Recovery Organic Rankine Cycle (ORC) system test just before the winter Holiday season.  We wrapped some short lengths of tubing around the exhaust ducts of a factory that uses ovens for baked-on paint finishes of steel parts. 

This is the least ideal and most crude form of heat extraction but it is completely non-intrusive to the factory equipment.  We can run the system with absolutely no adverse effects on the factory process.  We can also fully integrate the system to access all of the waste heat for maximum efficiency if desired.

Using a low boiling point, non toxic, non ozone depleting, non flammable ORC fluid (R245FA), we ran a 3-phase AC permanent magnet generator and made some power.  As you can see in the video, it easily powered six 100-watt light bulbs and all the mechanical drive gear with less than 100 psig system pressure. 

This system configuration using the full exhaust heat flow could generate up to 50 kW using a larger generator.

Vengeance Power Engine

The Power of Leverage

The Vengeance Power Engine is a positive displacement sealed turbine and a true rotary engine.  It is a true rotary because it does not use a crankshaft to transfer reciprocating motion into rotary motion, which reduces the efficiency of the engine.  The forces from the expanding gasses from combustion, steam or compressed air are transferred directly into rotary motion simplifying the process and utilizing the most mechanical energy for work.

Since it is a positive displacement engine, it can easily be throttled for various RPM.  The engine provides maximum torque at start-up/stall.  It can also idle and run at very low RPM without stalling like a turbine engine.  It does not require high velocities to compensate for blow-by past the vane tips like a turbine.  The exhaust temperatures are much cooler since more of the thermal energy from combustion is transferred into mechanical energy to turn the output shaft.  The simple design allows the engine to be scaled to any size for any power requirement.

The engine uses many off-the-shelf components that have gone through rigorous testing under very harsh conditions before implementation.  Since the engine can run at lower speeds with optimal power delivery, reliability is greatly increased.

As an internal combustion engine, it can burn conventional fuels such as: gasoline, diesel, natural gas, propane and alternative fuels such as bio-diesel, ethanol, methanol, syngas, hydrogen, ammonia, dimethyl ether, etc..

As an external combustion engine, it can operate on the Brayton Cycle to cleanly and optimally burn a great variety of fuels. Future applications of our technology include hypersonic pulse detonation waves that would destroy most traditional engines.

Past Developments

Otto Cycle – Propane

Click here to see video demonstration of our engine running on the Otto Cycle using our chassis dyno platform.

Brayton Cycle – Gasoline Injection

Click here to see video demonstration (Vengeance Power Engine External Combustion Unit Test)

Rankine Cycle – Steam

Click here to see video demonstration of our Vengeance Power Engine running on steam using the Rankine Cycle.

Compressed Air

Click here to see video demonstration of our Vengeance Power Engine running on compressed air followed by a lever arm torque test.

Compressed Air Car – 530 ft-lb Chassis Dyno Test

Click here to see video demonstration of our Vengeance Power Expander powering a 1972 Corvette Chassis running on compressed air.

Compressed Air Car – A Reality

Click here to see video demonstration of our Vengeance Power Expander Motor in a 1972 Corvette Chassis.

Compressed Air Car – Final Checks

Click here to see video demonstration of our Vengeance Power Expander in a 1972 Corvette Chassis – Compressed air test running 23 ACFM @ 90 psig.