New engine design could double fuel efficiency of cars
December 31st, 1969
The UK-based Nevis Engine Company is close to completing work on the second phase of testing of its functioning prototype of a new exhaust valve and intake system that’s claimed to be able to nearly double the fuel efficiency attained by conventional internal combustion engines.
At the heart of the design is both a new combustion cycle, labeled the ‘Bortone Cycle’ after the engine's inventor, Cesare Bortone, as well as the actual engine itself, which will be available in engine configurations ranging from single to eight cylinder formats. The design is said to achieve near-perfect combustion at all levels of power demands, such as city or highway driving, and it can be configured to run on petrol, diesel, bio-fuels or even hydrogen.
Some of the key aspects of the new design include the doughnut-shaped pistons, low engine weight and size, and the unique Bortone Cycle, which has six times the number of power strokes per revolution of a traditional four-stroke engine. To put its performance into perspective, a two cylinder version displacing 1.0L is estimated to develop peak output of 250hp. Let's hope it's not all pie in the sky.
The UK-based Nevis Engine Company is close to completing work on the second phase of testing of its functioning prototype of a new exhaust valve and intake system that’s claimed to be able to nearly double the fuel efficiency attained by conventional internal combustion engines.
At the heart of the design is both a new combustion cycle, labeled the ‘Bortone Cycle’ after the engine's inventor, Cesare Bortone, as well as the actual engine itself, which will be available in engine configurations ranging from single to eight cylinder formats. The design is said to achieve near-perfect combustion at all levels of power demands, such as city or highway driving, and it can be configured to run on petrol, diesel, bio-fuels or even hydrogen.
Some of the key aspects of the new design include the doughnut-shaped pistons, low engine weight and size, and the unique Bortone Cycle, which has six times the number of power strokes per revolution of a traditional four-stroke engine. To put its performance into perspective, a two cylinder version displacing 1.0L is estimated to develop peak output of 250hp. Let's hope it's not all pie in the sky.
New engine design could double fuel efficiency of cars
June 17th, 2007
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June 17th, 2007
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June 17th, 2007
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At the heart of the design is both a new combustion cycle, labeled the ‘Bortone Cycle’ after the engine's inventor, Cesare Bortone, as well as the actual engine itself, which will be available in engine configurations ranging from single to eight cylinder formats. The design is said to achieve near-perfect combustion at all levels of power demands, such as city or highway driving, and it can be configured to run on petrol, diesel, bio-fuels or even hydrogen.
Some of the key aspects of the new design include the doughnut-shaped pistons, low engine weight and size, and the unique Bortone Cycle, which has six times the number of power strokes per revolution of a traditional four-stroke engine. To put its performance into perspective, a two cylinder version displacing 1.0L is estimated to develop peak output of 250hp. Let's hope it's not all pie in the sky.
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Comments (5 total)
Meet the top commenters on the LeaderboardBy ultima #1, Posted: 6/17/2007
Wow, this sounds like an amazing engine...especially the one litre unit putting out 250 hp!
By biturbo #2, Posted: 6/18/2007
There was no major improvement of the ICE for a very long time.
Bring it on!
By Amilo-D #3, Posted: 6/18/2007
I hope it turns out better than Rotary engine cycle.. Which also produces above 200hp for 1L engine (~280hp from 1.3L) but consumes as much fuel as a 3L engine.
THis looks generally interesting. Cant wait to study the BORTONE CYCLE in detail.
By maniac #4, Posted: 6/19/2007
I'm waiting for this, come on bring it .
Ok , let's calculate, this Bortone cycle has 6 times the power strokes that a normal IC piston engine has. An IC piston engine has a power stroke at every other engine cycle, so at 3000 rpm it fires only 1500 times. Acccording to the information given, the new engine will fire 9000 times at 3000 rpm. So where is the fuel efficiency ? Sure, jet engines have an efficiency of about 70% compared to the 20% of the IC piston engine. YET, they will still use more fuel if used to power a car instead of a plane. For instance, the turbine engine cars built by FORD, GM and FIAT etc., had very good efficiency but they still used about 8 times the fuel of an IC piston engine. That's why theu never caught on.
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