Exhibit 13

LiquidPiston Campaign Videos

Liquid piston X mini

introducing a revolutionary Engine Design

Introducing the 70 CC gasoline x-mini engine

components and assembly

Hosing

rotor

exhaust port

exhaust cavity

intake channel

Shaft

counterweight

exhaust shrouds

spark plug

cooling intake over

cooling fan

gas flow

exhaust and cooling gases

engine intake

air cooling flow through rotor

4-stroke hehc cycle illustration

intake

compression

combustion at constant volume

expansion

expansion complete

exhaust begins

exhaust manifold

3-chamber cycle and p-v illustration

pressure volume graph

LiquidPiston Maiden UAV flight

LiquidPiston JP8 Hybrid Propulsion system…coming soon

Maiden flight jet a fuel october 12 2019

LiquidPiston instals X mini 70cc

LiquidPiston replaces race kart engine with 70cc xmv3 rotary

Out with the 40 pound 6.5hp engine…

xmv3 engine assembly. the rotary engine core is 4 lbs 70cc 3hp

xmv3 engine installed in go-kart

the kart is ready to go

high efficiency thanks to patented cycle

3hp at 10,000 rpm

LiquidPiston X Mini rotary engine vs wankel

xmv3 x mini wankel

Science Channel: How its made

https://liquidpiston.com/how-its-made/

Speaker 1:
The rotary engine that powers this go-kart is 1/5 the size and weight of the piston engine it has replaced. With less to weigh it down in the engine department, the go-kart gains speed. This rotary engine also aims to boost fuel efficiency and cut emissions. Produced on a limited scale as they perfect it, the prototype is small enough to fit in a knapsack. The housing starts with a solid block of aluminum. Computer models will be used to generate machining instructions. Traditional rotary engines have an oblong shaped housing and a triangular rotor that spins within. This new design is just the opposite. Computerized tools profile the triangular housing, creating combustion chambers on the inside and cooling fins on the outside. They transform a solid hardened steel cylinder into a hollow crank shaft. The cylinder turns in a lave as a series of computer driven cutters sculpt it, creating a hollow crank shaft that will funnel air and fuel into the engine.

Speaker 1:
Computerized tools mill a piece of steel to a precise geometry. This peanut shaped rotor is the heart of the rotary engine. They immerse the rotor in deionized water as an electrified brass wire generates a spark that cuts into the steel. It forms a ridged hole in the center that will mate to a gear. This pinion gear will engage with the ridged profile in the center of the rotor. A worker inserts it in a vessel and fills it with liquid nitrogen. It freezes it at -190 degrees Celsius causing the gear to shrink a bit. He transfers the frozen pinion gear to the rotor. Using a press, he drives the pinion gear into the rotor to a specific depth. As the pinion gear thaws to room temperature, it expands to its original size and this seats it snugly in the rotor gear. Another computerized machine carves into a piece of cast iron steel that's held in the fixture by numerous bolts, creating a seal for the engine.

Speaker 1:
With a thickness of just one millimeter, the seal is sliver thin and tightly engineered. The seals are critical parts. They'll keep the rotary engines working chambers airtight. The seals will slide between the rotor and one of the engines chrome plated side plates. An automated grinding wheel gives the side plate a level and mirror finish. Heating the side plate causes the center bore to temporarily widen. A worker inserts a bearing into the bore and as it cools, the boar shrinks to the bearing. There are 10 times fewer components than in a comparable piston engine.

Speaker 1:
The assembler inserts the crank shaft in the side cover. He turns the assembly over and slides a ring gear into the cover. He sets the fixture in an upright position. He turns the crank shaft to confirm that it revolves smoothly. He slides the rotor, by now equipped with one of the seals, onto the crankshaft. He assembles the housing to the motor. He tests the rotation of the rotor. As it turns, it forms chambers in which the combustion cycle will take place. He slips a bearing and counterweight onto the shaft, followed by a bell mouth. The exhaust cover has three ports to discharge gases and one in the center through which the bell mouth protrudes. He attaches an engine intake adapter to the bell mouth. After the components have been secured with bolts, a dynamometer machine runs the engine and measures its performance. Capable of running on a variety of fuels, this new rotary engine is ready to start powering things.