A New Approach to Improve Diesel Engine Efficiency

Dear Sir,

It would be good to highlight your comment by having some sketch drawings of the piston shapes you anticipate. No less importantly the shapes and methods of replacing existing piston rings with whatever shapes you have in mind. As well the degree of wear these rings may have on liners or on the cylinder walls themselves

As you would know there have been complex and sometimes futile proposals that have not withstood the acid tests of :design,fabrication tooling etc.

If I may suggest it , my advices is that whatever you have in mind must first and foremost be made into a proto-type which can be accepted or refused by all the manufacturers ( and users) . IF your idea is sound your first port of call is the :Patent Office.

Labor Omnia Vincit.

Dear Sir,

Thank you for your response. Patent is pending for the idea.THERE IS NO CHANGE IN PISTON SHAPE.. Connecting rod is replaced by an innovative connecting rod and Crank shaft is replaced by geared shaft.The new mechanism reduces oscillation angle of connecting rod to less than 5 degrees.So the rubbing force between piston and cylinder is reduced by more than 50%. At the same time Force component imparting torque on drive shaft is very high. The piston velocity profile is Trapezoidal(instead of sinusoidal). Peak piston velocity is reduced and also RUBBING FORCE IS GREATLY REDUCED.. These factors contrbute to reduced wear and tear of cylinder on one hand and incresed productive forces on the other hand.

I can send a brief slide show depicting the main features of the novel technology if any one is interested. You can give your e- mail. id. My e-mail id is rathhna@sify.com

R.Sivasaravanan, Design Consulyant,CHENNAI, INDIA.

Ph:91-44-65876129,

91-9282106770

Approximately how many components does your design require, per cylinder?

Dear Sir,

Thank you very much for your response.The innovation calls for replacement of existing connecting rod and crank shaft to be replaced with Innovative connecting rod and drive shaft which generates Trapezoidal Piston Velocity Profile. Apart from that, few more constraiment components are required for this novel technology.Of course necessary arrngements in engine block is required to accomadate these components.This is idealy suited for bigger engines like generator sets, locomotives and for marine application.You can contact me by e-mail given in my earlier reply for any more detai.

R.Sivasaravananl

Well, that was quite an evasive response. 
I am therefore left to speculate on the complexity of the mechanism. My guess is the added cost in manufacturing additional components, increased assembly time, increased weight, additional maintenance, etc., likely offsets any benefits.

Sir, Thank you for your keen interest shown to the technology.Additional systems can be added to the engine, if merits offset the demerits as we are aware that so many new systems are added to engines over past four decades.This technology improves engine efficincy by about 5% resulting in about 10% saveng in fuel consumption and corresponding reduction of harmful emission which, are the needs of the hour.

If you are interested, you can give your e-mail id and I can send a brief write up for your reference.With present strategy of improving combustion as a means to improve engine efficiency has less scope for further improvement and it can give only marginal increment.Where as the new apprach is to transfer maximum energy to drive shaft from high pressure gasses. This has not been attempted and has more scope.

My e-mail id is rathhna@sify.com

R.Sivasaravanan

Dear Sir,

Techniical paper was presented at MAST 2007 at Genoa, ITALY in Nov.2007.The Session was chaired by Technical Dirrector of NAVSEA. I was a speaker in Power and Propulsion session. donot know how to post it in GOOGLE DOCS.

I am trying to create an awareness that a new approach (hitherto not tried any where) to improve engine efficincy with more scope for improvement is possible. Right now I am approching some funding agency to prove this concept which is promising. The abstract of this paper was also selcted for SAE World Congress 2009 and I could not participate due to financial constraints. It has also won an Innovation award given by L-RAMP(Lemelson Foundation, USA) which encourages innovation in INDIA in 2007. It also went upto Semi finals level in Innovation Growth Programme organised by Lockheed Martin India in 2008.

All such recognitions are proving that the technology is promising and is tangible.

R.Sivasaravanan

Congratulations on the awards and recognition.

Now, approximately how many components does your design require?

Oh, and by the way, "tangible" means something is real or actual, rather than imaginary or visionary. (Source)

Dear Sir,

Approximately ten components are needed for this mechanism. Some of the academic and defence personnel who witnessed the paper presentation has commented that this technology can be adopterd in diesel engine and the new mechanism will work efficiently . That is why I said it is tangible.

R.Sivasaavanan

There seems to be only three parties involved in this thread. Some of the comments that "Pantaz " has made are very pertinent . Perhaps they may even sound critical. The point is that if you wish to enlist Partners and obtain co-operation there needs to be on your part a willingness to "perform". Some one has said that :

"Vision without Action is merely a dream. Action without vision just passes the time. Vision , with Action , can change the world "

May I suggest that the reactions from Pantaz situate your position as the # 2 of the above . Respectfully I suggest that you start on the third .

In this regard I would suggest that IF your concept is workable, then definitely it should interest the shipyards of Asia ( who themselves are licencees of the major European diesel engine builders. They actually build these main engines for the ships their own shipyards construct ) .

If you have a credible solution and , having worked in these yards , I know them and can direct you there. First and foremost you must prove your design and have patents that will protect them (and yourself). Have you these ?

Labor Omnia Vincit.