What is LiquidPiston?
Headquartered in Bloomfield, Connecticut, LiquidPiston is redefining internal combustion through its patented HEHC technology. By synthesizing the core advantages of Diesel, Otto, and Atkinson cycles, the company delivers a scalable engine platform that offers superior power-to-weight ratios and reduced mechanical complexity. The firm has established a robust market position by targeting mission-critical sectors, including UAVs, urban air mobility, and industrial defense systems. With a history of successful collaboration with organizations like DARPA and the U.S. Army, LiquidPiston continues to bridge the gap between theoretical thermodynamic efficiency and practical, high-performance field deployment.
How much funding has LiquidPiston raised?
LiquidPiston has raised a total of $46.4M across 9 funding rounds:
Series B
$5M
Series C
$6.5M
Private Equity
$1.1M
Other Financing Round
$1.1M
Debt
$150K
Debt
$284K
Private Equity
$30M
Private Equity
$501K
Series B (2011): $5M, investors not publicly disclosed
Series C (2013): $6.5M supported by Adams Capital Management, Inc. and Northwater Capital Management, Inc.
Private Equity (2015): $1.1M featuring Northwater Capital and Adams Capital
Other Financing Round (2020): $1.1M, investors not publicly disclosed
Debt (2020): $150K with participation from PPP
Debt (2021): $284K led by PPP
Private Equity (2023): $30M, investors not publicly disclosed
Private Equity (2026): $501K, investors not publicly disclosed
Key Investors in LiquidPiston
Adams Capital Management, Inc.
A Pittsburgh-based venture capital firm specializing in early-stage applied technology investments, leveraging deep expertise in networking and infrastructure to drive market leadership.
Northwater Capital Management, Inc.
An investment firm that provides strategic capital to innovative enterprises, often focusing on companies that demonstrate high potential for operational excellence and product reliability.
PPP
Public-Private Partnership
What's next for LiquidPiston?
With the recent influx of capital, LiquidPiston is positioned to accelerate the commercialization of its X Engine platform. The strategic roadmap focuses on expanding manufacturing capabilities to meet the rigorous demands of military and aerospace procurement cycles. By leveraging its state-of-the-art dynamometer testing facilities, the company aims to refine its multi-fuel capabilities, ensuring that its rotary engines remain the gold standard for low-vibration, high-efficiency power generation. Future growth will likely center on deepening partnerships within the defense sector while exploring broader industrial applications that require lightweight, high-output power solutions.
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