LiquidPiston’s rotary engines are the first disruption to engine technology in over a century. These engines are not Wankel engines; they are uniquely configured to adopt the company’s patented thermodynamic cycle and its associated efficiency and low-noise benefits. LiquidPiston’s X Engine improves virtually all parameters – efficiency, weight, size, vibration, and noise.

LiquidPiston’s HEHC-cycle engines are designed to be:

LIGHTWEIGHT AND COMPACT

• High power density – up to 2 HP/Lb (3.3 kW/kg)

• 30% smaller and lighter for spark-ignition (SI) gasoline engines

• Up to 75% smaller and lighter for compression-ignition (CI) diesel engines

QUIET

• No poppet valves

• Exhaust turbulence minimized by over-expansion; no muffler required

LOW-VIBRATION

• Only two primary moving parts, optimally balanced, resulting in near-zero vibration

HIGH-EFFICIENCY

• 20% decrease in fuel consumption possible for SI gasoline engines

• 50% decrease in fuel consumption possible for CI diesel engines

MULTI-FUEL CAPABLE

• Diesel, gasoline, natural gas, JP-8

SCALABLE

• From 1 HP to over 1000 HP

LiquidPiston’s 70cc X Mini engine (right) next to a
49cc Honda Metropolitan moped engine (left).