CAP Clean Air

RNS Number:5407D
Clean Air Power Limited
25 May 2006


For immediate release                                                25 May 2006


                              Clean Air Power Ltd

                      ("Clean Air Power" or "the Company")

                            Technology Patent Update

Clean Air Power plc (AIM : CAP), the developer of Dual-Fuel(TM)combustion
technology that enables heavy-duty diesel engines to operate on a combination of
diesel and natural gas today provides an update to the market concerning its
intellectual property portfolio.

Clean Air Power has been recently granted two significant patents that cover the
future development of Dual-Fuel(TM)technology:

In the United States, Clean Air Power has been granted a patent which covers the
application of homogeneous charge compression ignition (HCCI) to the patented
Dual-Fuel(TM)system. HCCI is a significant technology that will be used to 
reduce emissions from internal combustion engines in the future.

In Europe, the Company was granted a patent, entitled "Gas-Fuelled, Compression
Ignition Engine with Maximized Pilot Ignition Intensity". This covers Clean Air
Power's Micropilot(TM)technology, which uses high-energy ultra-low quantities of
diesel to ignite a charge of natural gas. This has been demonstrated to
dramatically reduce emissions from Dual-Fuel(TM)engines. This technology is an
integral part of the solution offered by Clean Air Power to enable diesel
engines to operate on clean natural gas and meet the emissions and performance
challenges of the next decade.

Additionally, to coincide with the planned launch of "Genesis" the generic
aftermarket Dual-Fuel(TM)system, Clean Air Power is in the process of filing two
further patents to cover unique elements of the Genesis control system.

Clean Air Power continues to develop and patent significant elements of
Dual-Fuel(TM)technology that ensure that there will be an efficient, cleaner and
lower cost alternative to relying on diesel in future years.

Commenting on these patent awards, John Pettitt Chief Executive of Clean Air
Power said:

"Intellectual property is a key part of the development and protection of our
Dual-Fuel systems, particularly in the chosen areas where commercialisation is
occurring. As stated at our recent IPO, Dual-Fuel is attractive to companies in
Europe, Australia and the United States, which are looking to make fuel cost
savings and a positive environmental impact across a variety of transportation
fleets. These patents will help protect Clean Air Power's know-how in this
area."


For further details please contact:

Clean Air Power                                   Tel: +44 (0) 1772 624499
John Pettitt, Chief Executive
Peter Rowse, Finance Director

Buchanan Communications                           Tel: +44 (0)20 7466 5000
Charles Ryland/Ben Willey

Canaccord Adams                                   Tel: +44 (0)20 7518 2777
Robert Finlay/Erin Needra



                      This information is provided by RNS
            The company news service from the London Stock Exchange

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