The Combustion Engine Reimagined
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Top 3 Reasons to Invest in LiquidPiston
Our innovation can disrupt multiple industries at once, including drones, hybrid-electric cars, hydrogen fuel applications, mobile power generators, and more.
The First Disruption to Engine Tech
Today’s engines are big and inefficient, relying on the same compressed charge, four-cycle design developed in 1876. Based on our revolutionary thermodynamic cycle, our engines are smaller, more powerful, and more efficient. Today our X-Engine platform lets us build engines for nearly any application.
Up to 10x the power-to-weight of legacy engine
Runs on gas, diesel, propane, kerosene, jet A, and hydrogen
Can be scaled from 1 to 1,000HP
Small gasoline engines are inefficient. diesel engines are big and heavy. WE ASKED OURSELVES WHY?
LPI has developed two core technologies, a patented thermodynamic cycle and our patented X-Engine™.
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Liquidpiston Innovations
HEHC™ CYCLE
LiquidPiston has rethought the engine starting with first principles - revisiting the thermodynamic cycle - and innovating in a space that hasn't changed in over 100 years! This cycle has the potential to be up to 30% more fuel efficient than traditional Otto or Diesel cycles.
LiquidPiston has patented the High-Efficiency Hybrid Cycle (HEHC), which includes:
High Compression Ratio (i.e. Diesel cycle): For maximum efficiency, air is compressed to a high compression ratio, fuel is injected and compression is ignited (CI-HEHC). Our initial prototype - the "X-Mini" - utilizes a spark-ignition (SI-HEHC) version of the cycle with a lower compression ratio standard for gasoline engines. The advantage of SI-HEHC is compatibility with a range of fuels including Diesel, gasoline, jet fuel, propane, and even hydrogen
Constant-Volume combustion (i.e. Otto cycle): A dwell near top-dead-center (TDC) allows more time for fuel-air mixing and forces combustion to occur at nearly constant-volume conditions.
Over-expansion (i.e. Atkinson cycle): Combustion products are over-expanded using a larger expansion volume than compression volume, as in the Atkinson Cycle.
Cycle-skipping power modulation may also be utilized, which allows high efficiencies at low power settings while simultaneously cooling the engine’s walls internally and providing partial heat recovery.
X-Engine vs. Wankel
Our patented X-Engine solves the problems of the rotary engine without sacrificing the benefits. It’s extremely compact and lightweight. And with just two moving parts it has nearly zero vibration.
We turned the traditional Wankel inside out. Traditional Wankels have a triangular rotor in a "peanut" shaped (trochoidal) housing. We have a peanut-shaped (trochoidal) rotor within a tri-lobed-shaped housing. By turning the rotary "inside out", the X-Engine has stationary apex (tip) seals that can be directly lubricated. Furthermore, the long, skinny, rotating combustion chamber of the Wankel - becomes a stationary combustion chamber within the housing that can be optimized for better fuel-air mixing and combustion. In this way, we address many of the challenges of the old Wankel rotary including sealing, cooling, lubrication, emissions, and efficiency.
LiquidPiston Was Featured On…
The Discovery Channel / Daily Planet Show
How It’s Made
Season 31 Episode 09
Introducing the XTS-210 EnginE
Based on our X-Engine platform, our new XTS-210 engine is our most advanced engine yet. Built in conjunction with a $9M contract from the Army, the XTS is purpose-built for generators, hybrid-electric power for vertical take-off and landing aircraft (VTOL) and small unmanned aircraft systems (UAS). It’s ready to meet demanding military and commercial applications.
80% smaller than comparable diesel engines
25 horsepower
Supercharged
Multi-fuel capable (including jet A and hydrogen)
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CAMPAIGN UPDATES
$30M IN DOD, DARPA, AND ARMY CONTRACTS
When it comes to engines, bigger doesn’t mean better. Imagine moving 1,000 pound generators (and the fuel to power them) to a desert base. Or powering an unmanned aircraft where weight comes at a premium. We’re actively solving these problems for the military.
Demonstration of Hybrid Electric X-Engine using jet fuel in 55lb UAV for the Army which led to multiple contract awards.
LiquidPiston 30kW Generator concept (11 on left) vs. 30kW AMMPS genset (3 on right) means more generators per pallet - a game changer for the military
We Grew Revenue 156% in 2022
Thanks to our increase in revenue between 2021 and 2022, we are now squarely profitable. This kind of growth is a sign of just how in demand our breakthrough engine technology is. And we’re especially proud of achieving profitability this early. But we are only just getting started. With the release of our XTS-210, we’re taking concrete steps toward penetrating the commercial markets.
LIQUIDPISTON IS TACKLING THE GLOBAL INTERNAL COMBUSTION MARKET.
Military & Aerospace¹
Automotive¹
Urban Air Mobility (UAM)¹
Unmanned aerial systems (UAS)2
MOBILE / BACKUP / DISTRIBUTED POWER GENERATION3
[1] Image for reference, showing future potential market
[2] LiquidPiston Hybrid Electric X-Engine (HEXE) Army Demonstrator vehicle
[3] LiquidPiston Compact Artillery Power System (CAPS), 2 kW Jet-fueled hybrid generator
We Make the Cars of the Future Possible
Hybrid Electrification
Battery-powered electric vehicles have challenges on the path to a renewable future. A typical electric battery weighs over 1,000 pounds and the amount of lithium, cobalt, and nickel currently needed to make them is unsustainable. Our small, efficient engines in a hybrid-electric car can make it possible for the battery to be up to 5X smaller.
Hydrogen
Lightweight & Compact
Up to 80% smaller and lighter than the traditional piston Diesel engines.
Simplicity
Only two primary moving parts, optimally balanced.
High-Efficiency and Lower Fuel Consumption
The optimized thermodynamic cycle has the potential to decrease fuel consumption by 30%, thereby lowering CO2 emissions and the cost of running an engine
Quiet and Near-Zero Vibration
With lower pressure exhaust and just two moving components that are optimally balanced, the engine is inherently quiet, and offers exceptionally low vibration.
We have 64 patents, 44 Issued and 20 Pending
We have 64 patents, 44 Issued and 20 Pending
Future revenue streams
We’re presently developing our 5th generation engine architecture, with prototype development of the X-Engine and its application demonstrators largely funded by DoD contracts. Once the X-engine has proven utility in military applications, we aim to expand into consumer OEM licensing and large-scale manufacturing.
Updates Since Our Last Round
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$50,000
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Father and Son Reinvent the Engine
Dr. Alexander Shkolnik and his father Dr. Nikolay Shkolnik founded LiquidPiston with a radical idea: Instead of trying to make a slightly better engine, what if they created a completely new thermodynamic cycle? That’s exactly what they did. Their patented thermodynamic cycle unlocks up to 10X the power of a traditional engine while being able to run on a variety of fuels like hydrogen.
THE TEAM
Alexander Shkolnik
Nikolay Shkolnik
Per Suneby
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We turned the traditional Wankel inside out. Traditional Wankels have a triangular rotor in a "peanut" shaped (trochoidal) housing. We have a peanut-shaped (trochoidal) rotor within a tri-lobed-shaped housing. By turning the rotary "inside out", the X-Engine has stationary apex (tip) seals that can be directly lubricated. Furthermore, the long, skinny, rotating combustion chamber of the Wankel - becomes a stationary combustion chamber within the housing that can be optimized for better fuel-air mixing and combustion. In this way, we address many of the challenges of the old Wankel rotary including sealing, cooling, lubrication, emissions, and efficiency.
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