EFFICIENT OPTIMIZATION OF HEAVY-DUTY DIESEL COMPLYING WITH EMISSION STANDARDS

Información del proyecto

Identificador del acuerdo de subvención: EN3E0140

Proyecto cerrado

Fecha de inicio 1 Julio 1986

Fecha de finalización 30 Junio 1989

Financiado con arreglo a

• Research and development programme (EEC) in the field of Non-Nuclear Energy, 1985-1988

Coste total

Sin datos

Aportación de la UE

Sin datos

Coordinado por

Iveco Fiat SpA
Italy

Objetivo

(A) ECONOMIC BENEFITS -
- GENERATION OF REFERENCE DATA TO CONFIRM THE MULTI-DIMENSIONAL MODELS BEING DEVELOPED (IN PARTICULAR THE JRC PROGRAMME MODELS);
- INITIAL VERIFICATION OF THE POSSIBILITY OF PROVIDING THE ACTUAL COMBUSTION PROCESS WITH A SUBMODEL WITH SIMPLIFIED CHEMICAL KINETICS IN SOPHISTICATED JRC MODELS OF AIR MOTION AND SPRAY FORMATION WHICH WILL BE COMPLETED OVER THE 3 YEAR PERIOD 1986-88.

(B) TECHNICAL BENEFITS:
- DEFINITION OF AN INNOVATIVE COMBUSTION SYSTEM FOR DIRECT INJECTION DIESEL ENGINES CAPABLE OF REDUCING FUEL CONSUMPTION AND POLLUTION IN THE LONG TERM.

(C) ECONOMIC BENEFITS
- SUBSTANTIAL REDUCTION IN FUEL CONSUMPTION AND EMISSION FROM HEAVY-DUTY DIESEL ENGINES BUILT IN EUROPE.
Detailed spatial and temporal information on the variables affecting combustion development inside a cylinder were obtained by both computer simulation and laboratory measurements. The results of the basic research work was adopted in the development of a multicylinder engine prototype. Better and more complete combustion was achieved by optimising the air fuel mixture in the combustion chamber to obtain lower maximum temperatures and better utilisation of the air trapped in the cylinder. Extensive applications of existing and improved mathematical models have been made. In particular, the basic code used was the 3-dimensional KIVA, originating in Los Alamos. A wide range of experimental conditions and parameter variations were studied both on a single cylinder engine, which was devoted to flame propagation studies, and on a real truck engine. The experimental work was guided by the predictions of the mathematical models.

A prototype of a highly advanced heavy duty diesel engine with increased thermal efficiency, a 30% lower emmission standard against foreseen future regulations, and the capability to operate efficiently, even with future lower quality fuels has been developed.

The targets of the engine optimisation were compliance with emission standards of R49-30%, and a thermal efficiency of 0.44. The concept was based on a better and more complete combustion to be promoted by a highly improved air fuel mixture in the combustion chamber. This would allow low maximum temperatures and better utilisation of the incylinder trapped air to be achieved.

The wide parametic experimentation both on single cylinder engines (devoted to flame propagation studies) and on real truck engines, involved several experimental conditions for a variety of parameters. The experimental work was guided by the trends derived from the application of mathematical models.
THE DEVELOPMENT OF MULTI-DIMENSIONAL MODELS IS A BASIC REQUIREMENT FOR ACHIEVING EFFICIENT COMBUSTION SYSTEMS. IN THE PAST 2-D MODELS HAVE BEEN DEVELOPED AT IMPERIAL COLLEGE, AND MORE RECENTLY THE JRC HAS DEVELOPED A 3-D MODEL OF AIR MOTION. FURTHER PROGRESS IS EXPECTED OVER THE NEXT 3 YEARS, NOT ONLY FOR AIR MOTION BUT ALSO FOR SPRAY FORMATION. NEVERTHELESS, NO ACTION HAS SO FAR BEEN UNDERTAKEN TO USE THESE MODELS IN DEVELOPING A COMBUSTION SYSTEM FOR DIRECT INJECTION DIESEL ENGINES WITH HIGH OUTPUT AND LOW EMISSIONS. THROUGH ADAPTING THESE MULTI-DIMENSIONAL MODELS TO THE SYSTEMS OF COMBUSTION AS SUCH, THE AIM NOW IS TO DEFINE A NEW SYSTEM OF DIESEL COMBUSTION BASED ON A BETTER MIX OF AIR AND FUEL AS TO OBTAIN HIGH EFFICIENCY COMBINED WITH LOW EMISSION.

Ámbito científico (EuroSciVoc)

• ciencias naturales › ciencias de la tierra y ciencias ambientales conexas › ciencias ambientales › contaminación
• ingeniería y tecnología › ingeniería ambiental › energía y combustibles
• ciencias naturales › matemáticas › matemáticas aplicadas › modelo matemático

Programa(s)

• FP1-ENNONUC 3C - Research and development programme (EEC) in the field of Non-Nuclear Energy, 1985-1988

Tema(s)

Datos no disponibles

Convocatoria de propuestas

Datos no disponibles

Régimen de financiación

CSC - Cost-sharing contracts

Coordinador

Iveco Fiat SpA

• Aportación de la UE: Sin datos
• Dirección: Strada delle Cascinette 6 ; 10156 Torino ; Italia
• Coste total: Sin datos

Participantes (2)

AACHEN UNIVERSITY OF TECHNOLOGY

Alemania

• Aportación de la UE: Sin datos
• Dirección: Templergraben 55 ; 52056 AACHEN
• Coste total: Sin datos

CENTRO RICERCHE FIAT S.C.P.A.

Italia

• Aportación de la UE: Sin datos
• Dirección: Strada Torino 50 ; 10043 ORBASSANO
• Coste total: Sin datos