Alec Shkolnik
Wilmington, Massachusetts, United States
1K followers
500+ connections
About
Entrepreneur, R&D technology developer / program manager, and technical specialist -…
Activity
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I’m #hiring. Know anyone who might be interested? 👋😊
I’m #hiring. Know anyone who might be interested? 👋😊
Posted by Alec Shkolnik
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We had the pleasure of presenting today at the SAE Powertrains Conference. If you missed our talk, come visit us at Booth…
We had the pleasure of presenting today at the SAE Powertrains Conference. If you missed our talk, come visit us at Booth…
Liked by Alec Shkolnik
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Looking forward to this discussion with Morning Brew CEO Alex Lieberman and LiquidPiston CEO Alec Shkolnik, and some other great companies (BOXABL…
Looking forward to this discussion with Morning Brew CEO Alex Lieberman and LiquidPiston CEO Alec Shkolnik, and some other great companies (BOXABL…
Liked by Alec Shkolnik
Experience
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LiquidPiston, Inc.
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Education
Publications
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Development of a Small Rotary SI/CI Combustion Engine
SAE
This paper describes the development of small rotary internal combustion engines developed to operate on the High Efficiency Hybrid Cycle (HEHC). The cycle, which combines high compression ratio (CR), constant-volume (isochoric) combustion, and overexpansion, has a theoretical efficiency of 75% using air-standard assumptions and first-law analysis. This innovative rotary engine architecture shows a potential indicated efficiency of 60% and brake efficiency of >50%. As this engine does not…
This paper describes the development of small rotary internal combustion engines developed to operate on the High Efficiency Hybrid Cycle (HEHC). The cycle, which combines high compression ratio (CR), constant-volume (isochoric) combustion, and overexpansion, has a theoretical efficiency of 75% using air-standard assumptions and first-law analysis. This innovative rotary engine architecture shows a potential indicated efficiency of 60% and brake efficiency of >50%. As this engine does not have poppet valves and the gas is fully expanded before the exhaust stroke starts, the engine has potential to be quiet. Similar to the Wankel rotary engine, the ‘X’ engine has only two primary moving parts - a shaft and rotor, resulting in compact size and offering low-vibration operation. Unlike the Wankel, however, the X engine is uniquely configured to adopt the HEHC cycle and its associated efficiency and low-noise benefits. The result is an engine which is compact, lightweight, low-vibration, quiet, and fuel-efficient.
Two prototype engines are discussed. The first engine is the larger X1 engine (70hp), which operates on the HEHC with compression-ignition (CI) of diesel fuel. A second engine, the XMv3, is a scaled down X engine (70cc / 3HP) which operates with spark-ignition (SI) of gasoline fuel. Scaling down the engine presented unique challenges, but many of the important features of the X engine and HEHC cycle were captured. Preliminary experimental results including firing analysis are presented for both engines. Further tuning and optimization is currently underway to fully exploit the advantages of HEHC with the X architecture engines.Other authorsSee publication
Projects
Languages
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Russian
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More activity by Alec
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Congrats to the LiquidPiston team for winning a $35M award from the Air Force / AFWERX Agility Prime (including a $15M STRATFI). This award will…
Congrats to the LiquidPiston team for winning a $35M award from the Air Force / AFWERX Agility Prime (including a $15M STRATFI). This award will…
Shared by Alec Shkolnik
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At LiquidPiston, we believe that the internal combustion engine is an important pathway to a more sustainable future. I shared my thoughts…
At LiquidPiston, we believe that the internal combustion engine is an important pathway to a more sustainable future. I shared my thoughts…
Shared by Alec Shkolnik
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Check out my article on Green Car Congress "Transportation’s Future Is Hybrid": https://lnkd.in/e7fqqjxx Let me know your thoughts!
Check out my article on Green Car Congress "Transportation’s Future Is Hybrid": https://lnkd.in/e7fqqjxx Let me know your thoughts!
Shared by Alec Shkolnik
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Really enjoyed this conversation with Eric Tegler about our ongoing work with the DoD. All branches of the military increasingly need reliable…
Really enjoyed this conversation with Eric Tegler about our ongoing work with the DoD. All branches of the military increasingly need reliable…
Shared by Alec Shkolnik
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LiquidPiston has tweaked the rotary engine for potential tactical power and drone propulsion use, showing a lot more revs left in ICE technology…
LiquidPiston has tweaked the rotary engine for potential tactical power and drone propulsion use, showing a lot more revs left in ICE technology…
Liked by Alec Shkolnik
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Hot off the press! U.S. Army Selects LiquidPiston to Revolutionize Battlefield Power Generation with a New Class of Man-portable, Heavy-fuel 10 kW…
Hot off the press! U.S. Army Selects LiquidPiston to Revolutionize Battlefield Power Generation with a New Class of Man-portable, Heavy-fuel 10 kW…
Liked by Alec Shkolnik
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The naysayers said it would never run on vodka! :-). Fun video.
The naysayers said it would never run on vodka! :-). Fun video.
Shared by Alec Shkolnik
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Thank you Senator Chris Murphy, Senator Richard Blumenthal, Mayor Danielle Wong, PHR® and other distinguished guests for attending our ribbon cutting…
Thank you Senator Chris Murphy, Senator Richard Blumenthal, Mayor Danielle Wong, PHR® and other distinguished guests for attending our ribbon cutting…
Shared by Alec Shkolnik
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