Fuel Efficiency Quantum Leap the Aim of New Engine

By George Backwell at April 10, 2011 05:40
Filed Under: Research & Development
A new engine is being developed in the sleepy Sussex countryside of England, an engine that according to Managing Director  Chrissie Wilkins, of ULTRaMo (derived from ‘Ultra Large Temperature Ratio Motor’)  —  “ … has the potential to be the biggest breakthrough the industry has seen since 1876 when Otto built the first practical four-stroke internal combustion engine.” This lofty claim is worthy of a closer look.The New Engine Claims to Offer Thermal efficiency of 60% – double that of conventional IC engines Exhaust gas emission level halved using present-day fuels Able to run on any combustible fuels Adaptable to run on sustainable and carbon-neutral fuels as they become available An estimated 8dBA reduction in noise level Novel Engine Design The company is keeping the patented design of its new engine a closely guarded secret, but the basic concept is to capture heat that is usually lost through the exhaust and co... [More]

GE aircraft engines in maritime use

By Edward Lundquist at February 02, 2011 10:49
Filed Under: Navy insights
General Electric helicopter engines have applications that have proven to be successful in the maritime sector. [More]

Detonation Gun Engine

By Keith Henderson at August 25, 2010 13:36
Filed Under:
A Canadian physicist and inventor Kazimierz Holubowicz puzzled over the low efficiency of the reciprocating engine operating under normal combustion conditions because he knew that the energy released by fuel exploding, is very much more than under normal combustion. The obvious problem was how to build an engine that would allow fuel to explode (detonate) without the engine exploding! He came up with a design that uses a second free floating piston in a very long cylinder. The free piston oscillates as the main piston is driven downwards turning the crankshaft with the exhaust in the upper cylinder expending most of its energy, harmful SOx and NOx products are dissolved allowing simple treatment and disposal. High torque, low speed and multi fuel capabilities are all attributes claimed for this engine as are low fuel consumption with zero CO and particulate emission. The linear torque vs speed characteristics of this engine make the use of a transmission unnecessary for several applications.


Wind Engine

By Keith Henderson at August 22, 2010 10:09
Filed Under:
In an earlier blog Reducing Air Drag, I mentioned the organization Greenwave. They have another wind power project called the Wind Engine.It is a mechanical sail uses the Magnus Effect and in its practical ship application has a tall cylindrical rotor as pioneered by Flettner in 1926. Test carried out by Auckland University, New Zealand, determined that the thrust produced by the Flettner rotor is eight to ten times more than a sail of equal area. Further tests with a 25:1 model ship indicate that wind assisted propulsion can deliver significant fuel and emission reductions with favorable winds and provides good maneuverability including crash stop performance. Lloyd’s Register provided technical assistance and expertise, for the construction of a full sized prototype rotor that was erected on a site in NE England. The next stage of the project is on board ship tests at sea which will be independently monitored by Lloyd's Register and is scheduled to take place during 2010.


Opposed-Piston Opposed-Cylinder Engine.

By Keith Henderson at July 11, 2010 07:01
Filed Under:
It’s not often that we hear of a new type of piston engine that claims to be lighter, more powerful, less emissions and more efficient that the engines we have today, added to this is the capability to operate on a variety of fuels. Its design combines features of the Jumo J205 diesel aircraft engine and the venerable Volkswagen boxer engine. The inventor of this new engine is Prof Peter Hofbauer, former Director of Engine Development at Volkswagen Group, and later with the company developing the engine EcoMotors, established in early 2008. The engine is a turbocharged two stroke Opposed Piston Opposed Cylinder engine (OPOC) and as a high speed engine has automotive, marine, agricultural, stationary and generator applications. It has only one crankshaft and the opposed pistons are moved by rods attached to the single crankshaft. One cylinder module comprises of two opposed cylinders and the concept allows engines of greater power to be produced by adding more modules. The largest version of the OPOC engine module so far, has a cylinder bore of 100mm yet produces 325hp at 3,500rpm for a weight of under 300 lbs giving a power to weight ration of 1.1 hp per lb. Sluggishness in acceleration due to turbocharger lag is eliminated by the novel use of an electric motor used to spin up the turbo when the throttle is cracked open – a supercharger in effect.


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