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Motor de combustión interna de alto rendimiento sin contacto entre el pistón y el cilindro

Resumen

Tipo:
Demanda Tecnológica
Referencia:
TRFR20150317001
Publicado:
23/03/2015
Caducidad:
22/03/2016
Resumen:
Una empresa francesa especializada en sistemas mecánicos innovadores para aplicaciones de automoción y vehículos todoterreno busca experiencia en motores. El nuevo concepto propuesto es un motor de combustión interna que se caracteriza por la ausencia de contacto entre el pistón y el cilindro, lo que permite aumentar la eficiencia en términos de rendimiento y reducción de emisiones nocivas. La solución evita que el lubricante se queme en la cámara de combustión. La empresa busca socios con el fin de establecer acuerdos de cooperación técnica e investigación (con posibilidad de cooperar en un proyecto) para desarrollar el primer prototipo.

Details

Tittle:
High efficiency, dry cylinder internal combustion engine concept
Summary:
A French company specialised in innovative mechanical systems for automotive and off road applications is looking for engine expertise. The new concept proposed is an internal combustion engine featuring no contact between piston and cylinder in order to increase the efficiency both in terms of performance and reduction of harmful emissions.
The company is looking for technical or research cooperation (possibly through a collaborative project) in order to work on a first prototype.
Description:
Internal combustion engines are the most widely used devices to provide power in various applications, but mainly in vehicles used for transportation. The basic idea behind an internal combustion engine is the expansion of heated gasses to move a piston inside a cylinder. The linear motion of the piston is then transformed into rotational motion by a push-rod and crank mechanism. The combustion chamber is sealed by a number of rings placed on the piston. There are two major shortcomings of the present construction of internal combustion engines: one is that the maximum force exerted by the expanded gases on the piston is generated at the lest favourable position of the push-rod crank mechanism, thus the torque generated is not as large as possible; the second is the large amount of friction that is generated in the contact between the piston rings and cylinder on one hand and between the piston skirt and cylinder on the other.
The proposed project aims at a substantial reduction of the friction between piston and cylinder by guiding the piston with an innovative principle (shown under Non Disclosure Agreement).

Initial calculations have been conducted and prove the great benefits without complex mechanical changes in current engine architecture.
Due to the fact that friction is practically eliminated between piston and cylinder, it will allow the eccentricity between the axis of pistons and that of the crank shaft to be substantially increased in comparison to current practice. As a result, the expansion of the combustion gasses will take place not when the connecting rod and crank are aligned, but when the crank is at a certain angle, increasing the torque delivered by the engine.

In order to protect rubbing surfaces and avoid seizure of their surfaces, liquid lubricants are driven in the contacts between piston rings and cylinder surface in current internal combustion engines. These lubricants are natural or synthetic hydrocarbons or other chemicals to which a number of specialised additives are added. The additives most often contain sulphur and phosphorus which upon burning generate harmful NOx's and ashes.
The solution proposed in this project eliminates the need of lubricant being burned in the combustion chamber. This can have an important impact upon the emissions of the engine, the amount of lubricant used and the interval of the change. The benefit upon the environment cannot be quantified at this stage but it is believed that will be very substantial.

The company's new concept can also affect the type of materials used for manufacturing these components. Full ceramic pistons and cylinders, means potential greater combustion temperature, better heat transfer, and reduced mass of the engine.

It is therefore looking for technical or research cooperation with research and industry partners with expertise in engine combustions to set up a technical platform and develop a first prototype.
Technical Specification or Expertise Sought:
We are looking for internal combustion engine experts in order to analyse the concept potential and pre-feasibility.

They should be familiar with / able to work on the following issues :
- reduced friction between piston and cylinder thus improved efficiency of engine,
- no direct contact takes place between cylinder and piston thus to be made out of ceramic materials with higher combustion process temperature,
- no lubricantinto the combustion chamber thus no harmful emissionsgenerated by burning additives,
- less lubricant is needed and the lubricant change interval increases manifold;
- increased torque, thus smaller engines with the same power as much larger ones;
- simpler construction of piston, as no rings are needed;
- no major modifications to existing manufacturing lines of current IC engines should be needed.

Partner sought

Type and Role of Partner Sought:
Type : academic research or technical centre or R&D unit of industry

Role : provide combustion engine expertise (see specifications). Ability to work on cylinder - piston materials, thermodynamics, mechanics
Provide the know-how to validate / improve initial design
Co-develop a first prototype

Client

Type and Size of Client:
Industry SME <= 10
Already Engaged in Trans-National Cooperation:
No
Languages Spoken:
English
French
German
Romanian