This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
A New Diesel Injection Pump with High Injection Rate, Its Influence on Smoke and Emissions
Annotation ability available
Sector:
Language:
English
Abstract
This report discusses some problems connected with the reduction of exhaust emissions and fuel consumption for direct injection Diesel engines; it indicates how they may be solved without modifying the basic power unit. The study was made on a standard production engine used in European heavy duty trucks. The effect of a number of individual variables was studied, including injection timing, injection rate, exhaust gas treatment (catalytic exhaust system), intake air pressure (including supercharging), charge dilution with exhaust gas recirculation, etc. After this first series of tests had been made, the effect of a combination of these variables was examined. To obtain the optimum results with a system providing a very fast injection rate, the effect of changes in the degree of turbulence was evaluated.
The results of the study demonstrate that the use of a pump which is able to provide very high injection rates enables an engine to operate with low values of NO2 + HC with only marginal losses in power and fuel consumption, and at the same smoke level. The second part of the paper gives details of the FIAT DRF experimental injection pump which provided the very high injection rates needed for this programme.
Recommended Content
| Technical Paper | Enabling Components for Future Clean Diesel Engines |
| Technical Paper | Mercedes-Benz Commercial Vehicle Engines For Euro II And EPA 94 Emission Limits |
Authors
Topic
Citation
Montanari, V., Antonucci, A., Rivolo, P., and Lombardi, C., "A New Diesel Injection Pump with High Injection Rate, Its Influence on Smoke and Emissions," SAE Technical Paper 750774, 1975, https://doi.org/10.4271/750774.Also In
References
- CEE Directive n. 72/306/CEE of August 2, 1972
- “Measurement of Carbon Dioxide, Carbon Monoxide and Oxides of Nitrogen in Diesel Exhaust” Technical Report SAE j177
- “Continuous Hydrocarbon Analysis of Diesel Emissions” Technical Report SAE j215
- “Measurement of Intake Airand Exhaust Gas Flow of Diesel Engines” Technical Report SAE j244
- Walder C.J. Reduction of Emission from Diesel Engines SAE n. 730214 January 1973
- Mc Connell G. Oxides of Nitrogen in Diesel Engine Exhaust Gas: Their Formation and Control Proc. I. Mech. E. 1963-64 178 38
- Pischinger R. Cartellieri W. Combustion System Parameters and System Parameters and Their Effects Upon Diesel Engine Exhaust Emission SAE n. 720756 September 1972
- Hames R.J. Merrion D.F. Ford H.S. Some Effects of Fuel Injection System Parameters on Diesel Exhaust Emission SAE n. 710671 August 1971
- Khan I.M. Greeves G. Wang C.H.T. Factor Affecting Smoke and Gaseous Emission from Direct Injection Engines and a Method of Calculation SAE n. 730169 January 1973
- Bosch W. July 1964