Company profile
Dolphin-N2: CyroPower - Game-Changing Engine Technology
Dolphin N2 Limited is a UK company with status active founded in 2017 based in South East England.
Updated 06 Jun 2026 16:52
Reference milestones and recent Companies House filing stream events.
LIQ03 | Transaction MzUyMzg4NDY5OWFkaXF6a2N4 | Paper/PDF filed
Published 04 Jun 2026 14:31
Next confirmation statement due date
Next accounts due date
SH01 | Transaction MzQzNTUyNjAyOGFkaXF6a2N4
Published 12 Sep 2024 15:50
AA01 | Transaction MzQzNDk1MTM0MmFkaXF6a2N4
Published 09 Sep 2024 12:20
Last confirmation statement made up date
Last accounts made up date
Company registered at Companies House
Dolphin N2 develops CryoPower technology, which uses split cycle technology, designed to reduce energy consumption and make use of waste materials.
Dolphin N2 is a spin out from Ricardo set up to comercialise the recuperated split cycle engine
Company has just been set up and is raising funds
1 Jan 2023 to 31 Aug 2023
HydroMAR-E will develop a mono-fuel Hydrogen version of the Recuperated Split Cycle Engine. This highly innovative thermal engine can be used in a range of heavy duty applications for land and sea. It offers very high efficiency (competitive with a PEM fuel cell), very low emissions (SULEV with aftertreatment), and ease of transition (existing ICE manufac...
1 Jun 2018 to 31 May 2021
Within the EU, Heavy Duty Vehicles (HDVs) are responsible for 30% of on-road CO2 emissions. Hybrid & & electrification strategies, now being introduced in the light duty vehicle (LDV) sector are ineffective in HDVs due to prohibitive on-cost, high associated mass & compromised range & load carrying capacity. Without a sector-specific carbon reduction tech...
