HYDRO PULS SYSTEMS BV — HPDD

Hydro Puls Direct-Drive

One machine. Three outputs. Zero carbon.

300 kW

Electric power per module

126 L/hr

Clean water recovered

0 g CO₂

Carbon-free ammonia fuel

Investor Presentation · July 2026 · Confidential

The Problem: off-grid power still runs on diesel

Remote industry, islands, mines, telecom and backup power burn diesel because nothing else is dependable enough.

Dirty

Diesel gensets emit ~700 g CO₂ per kWh plus NOx, SOx and particulates — increasingly taxed, restricted or banned.

Expensive

Remote diesel power costs $0.30–0.70 per kWh once fuel logistics, depreciation and maintenance are counted.

High-maintenance

Oil changes every 250–500 hours. Rings, bearings and injectors wear out. Major overhaul every 10,000–20,000 hours.

Fragile supply

Every litre of diesel must be trucked or shipped in. Fuel theft, spills and price shocks are routine.

Every current alternative forces a trade-off

Diesel / gas engines

  • High emissions, rising carbon cost
  • Oil, rings, valves — constant wear
  • Overhauls every 1–2 years
  • Still fossil-fuelled

Gas turbines

  • Poor part-load efficiency
  • Expensive hot-section service
  • Overhauls every 1–2 years
  • Still fossil-fuelled

Hydrogen fuel cells

  • H₂ is costly to move and store
  • Stack degradation, 5–10 yr life
  • Precious-metal catalysts

Solar + batteries

  • Intermittent — needs oversizing
  • Days of storage is unaffordable
  • No output in long dark seasons

The Solution: HPDD — a linear engine built for ammonia

Free-piston direct-drive generator, version V26.73-2 — no crankshaft, no gearbox, no oil, no exhaust pipe.

Carbon-free combustion

Burns 71.25% ammonia + 17.75% hydrogen (mass) — the hydrogen is cracked onboard from the same ammonia tank. No carbon in, no CO₂ out.

→ 300 kW per module, stackable


Direct drive

Twin free-floating pistons oscillate a 1.2 mm micro-stroke at high frequency, generating electricity directly in a linear alternator. No rotating parts.

→ 25 µm water film — no contact

Water bearing

Pistons ride on a 25 µm pressurised water film — zero metal contact, zero wear, zero lubricating oil.

→ 0.000 kg wear measured in testing


Fully closed loop

No exhaust port. A Rankine condenser recaptures every working fluid and turns "exhaust" into clean water, nitrogen and fertilizer.

→ 0 oil changes, ever

How it works — five steps, one sealed loop

Fuel

Liquid ammonia feeds an onboard catalytic cracker; 17.75% is split into hydrogen to ignite the mix.

Pulse

Combustion pulses fire against twin free pistons — a 1.2 mm micro-stroke, cushioned by sealed metal bellows.

Power

The pistons are the generator: they produce direct hydraulic pressure.

Capture

A separation vessel separates the water and nitrogen instead of an exhaust pipe.

Recover

Out come clean water, pressurised nitrogen (+20–30% extra power) and a fertilizer stream.

The breakthrough: one water film does five jobs

A single VFD-controlled water pump replaces the oil system, gas bearings, piston rings, cooling jackets and dampers of a conventional engine.

Suspends

Hydrostatic 25 µm film keeps piston and bore from ever touching

Flushes

Continuous flow sweeps combustion residue out of the clearance

Cools

Water carries heat away directly at the friction boundary

Dampens

The film is a water mattress absorbing pulse shocks

Adapts

Clearance is actively managed through the stroke (patent pending)

One machine, three revenue streams

Electricity — 300 kW

Dispatchable, grid-quality power per module. Modules stack to MW scale. Nitrogen cold/pressure recovery adds 20–30% to net output.

💧 Clean water — 126 L/hr

Combustion of ammonia + hydrogen produces pure water, condensed and captured instead of vented. Drinking or process water in the driest sites.

🌱 Fertilizer — Ca(NO₃)₂

Trace NOx is scrubbed with lime into calcium nitrate — a saleable agricultural fertilizer. The only "emission" is a product.

Head-to-head: HPDD vs. everything else

Illustrative comparison based on typical published figures for each technology class; HPDD figures from V26.73-2 design documentation.

Why the economics win

Maintenance collapses

No oil, filters, rings or overhauls. Service = monitor sensors, swap a pump. Diesel O&M is a major share of the $0.30–0.70/kWh remote power cost — HPDD removes most of it.

Efficiency stacks

Direct drive removes drivetrain losses; nitrogen cold and pressure recovery adds 20–30% net output; condensing capture recovers latent heat other engines throw away.

Fuel is already global

Ammonia is one of the world's most-produced chemicals: ~200 Mt/yr, with ports, ships, pipelines and price benchmarks in place. No new fuel infrastructure needed.

Byproducts pay back

Water and calcium-nitrate fertilizer are sold, not scrubbed. In water-scarce agricultural regions the byproducts alone can rival the value of the electricity.

A market moving our way

Ammonia-to-power is one of the fastest-growing segments of the energy transition.

Green Ammonia Market Growth (USD Billion)


Regulatory Tailwinds

EU carbon pricing and IMO shipping rules actively penalise the incumbents we replace.



Target Beachheads

  • Off-grid mining & industry
  • Islands
  • Ports & marine
  • Agriculture (fertilizer synergy)
  • Data-center backup

Margin Room

Displacing diesel at $0.30–0.70/kWh gives wide margin room before competing with grid power.

Market figures: Transparency Market Research (ammonia energy, 2025); Fortune Business Insights (green ammonia, 2026).

Deep, layered IP protection

The moat is not one patent — it is a coordinated family covering fuel, bearing, combustion and recovery.

Water cogeneration

Recovering combustion water as a product stream

Water bearing

The zero-wear hydrostatic piston suspension

Water-quench combustion

Direct water injection into the combustion event

Recuperative cracking cascade

Onboard NH₃-to-H₂ cracking using recovered heat

HHV recovery condensation

Condensing capture of latent heat & fluids

Belgian priority applications filed

Priority date secured Feb 2025 (BE2025/0025 family)

PCT international phase

Opens EU, US, India, Gulf & Asia filings — deadline Feb 2027

Next-generation V26.73-2

Features in confidential drafting now

IP strategy & drafting

Oohr Intellectual Research LLP

Roadmap to first commercial power

2026 H2 — Prototype & protect

Build bench prototype: bore, pistons, VFD water pump, bellows, condenser. File remaining V26.73-2 patents.

2027 — Validate & expand

Endurance-run prototype; verify zero-wear and closed-loop mass balance. Enter PCT national phases.

2028 — Pilot at scale

First full 300 kW module with an industrial launch partner (mine, island or port).

2029–30 — Commercial units

Certification, containerised product, first deliveries and OEM licensing.

The team

Three founders, three continents — engineering, IP and science under one cap table.

Gerd Van Driessche

Inventor & Founder
Hydro Puls Systems BV — Belgium

Originator of the HPDD architecture through 26+ design iterations; leads engineering and prototype development.

Mukul Pant

Co-founder, IP & Strategy
Oohr Innovations — India

Leads the patent portfolio, filings and commercialisation strategy across jurisdictions.

Prof. Dr. Mohamed Amin

Co-founder, Scientific Advisor
Egypt

Academic validation of thermodynamics, combustion and materials; bridge to research institutions.

The Ask

We are raising seed investment to take HPDD from validated design to running prototype.

Use of Funds


Build the prototype

Precision bore & pistons, VFD water-bearing pump, bellows, condenser, controls — the full bench system.


Complete the IP moat

Build a robust global intellectual property portfolio for HPDD to protect the invention worldwide, establish strong market exclusivity, and create a sustainable competitive advantage in key international markets.


Assemble the core team

Test engineering, controls and combustion expertise around the founding trio.

What you get in

Ground-floor equity in a patented engine platform

Before the prototype milestone re-prices the company

Exposure to power, water and fertilizer markets in one asset

Key Metrics at a Glance

300 kW

Electric output

Per module, stackable to MW scale

126 L

Clean water/hr

Captured from combustion, not vented

0 g

CO₂ per kWh

Carbon-free ammonia fuel cycle

25 µm

Water film

Zero metal contact, zero wear

$22B+

Green NH₃ market

Projected by 2033

200 Mt

Annual NH₃ supply

Existing global production infrastructure

30%

Net output boost

From nitrogen cold/pressure recovery

71.25%

Ammonia in fuel mix

By mass, balance is onboard-cracked H₂