This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
A Chassis Dynamometer Study of the Effects of AGO Detergent and Ignition Improver on Vehicle Fuel Consumption
Annotation ability available
Sector:
Language:
English
Abstract
The benefits of diesel fuel additives have been demonstrated in a broad range of performance and operational areas, from the refinery, through storage and distribution, to fuel dispensing and vehicle operation. The customer is certainly aware of their effects on fuel performance in many of these respects, such as cold-weather operation, ease of starting, foaming, odour, etc. An area of particular interest in customer perception, however, is fuel economy. Excluding the use of after-market fuel-treatment devices, it is claimed that additives of different types can improve fuel economy, for example by improving combustion, by maintaining injection equipment in optimum condition, or by reducing engine frictional losses. Although the effects of fuel type and additives on vehicle emissions have been studied, the effects on fuel economy are notoriously difficult to measure with precision, with the statistically most reliable data coming from extended fleet trials under closely controlled conditions. It was therefore the object of this study to devise a method to measure the effects of individual additives on fuel economy, at conditions representative of urban driving conditions, and to make preliminary measurements of the effects of a detergent and ignition improver.
In this study, a vehicle was prepared and run on a chassis dynamometer under steady-state urban cruise conditions according to a specially designed procedure. A range of standard nozzle fouling values was established by using selected fuel/detergent additive combinations. At each nozzle fouling level, repeated gravimetric measurements were taken of fuel consumption and emissions levels of CO, NOx and particulates. At a selected nozzle fouling level, fuel dosed with ignition improver was also used to give a direct comparison between the two additive functions.
The results show that benefits in fuel economy can be gained both by using detergents - in avoiding the build-up of excessive nozzle fouling and maintaining fuel injection equipment close to its design conditions - and also by using ignition improver. Changes in emissions consistent with previous studies were noted in both cases.
Recommended Content
Technical Paper | An Organic Diesel Fuel Additive for the Reduction of Particulate Emissions |
Technical Paper | The Effect of Modern Additive Technology on Diesel Fuel Performance |
Technical Paper | Diesel Fuel Quality: Engine Performance and Emissions |
Authors
Topic
Citation
Reading, K. and Evans, T., "A Chassis Dynamometer Study of the Effects of AGO Detergent and Ignition Improver on Vehicle Fuel Consumption," SAE Technical Paper 942012, 1994, https://doi.org/10.4271/942012.Also In
References
- Soot formation in local zones of fuel/burned gas-mixture in diesel engines Lepperhoff G. Houben M. CIMAC Florence 1991
- The role of detergent additives in diesel fuels Reading K. Inst. Mech. Eng. Seminar Proc. 1990 85
- Fouling of automotive diesel injectors - test procedure, influence of diesel oil and additives Montagne X. Herrier D. Guilbet J.C. SAE 872118
- Procedure for ranking the propensity of diesel fuels to form deposits within pintle nozzles Browne K.R. Draper D.E. Greeves G. Second CEC Aut. Fuels and Lubs. Symp. 1985
- A procedure for the assessment of pintle nozzle injector blockage in indirect injection diesel engines Reynolds E.G. SAE 861409
- A fuel additive concentrate for removal of injector deposits in light duty diesels Olsen R.E. Ingham M.C. Parsons G.M. SAE 841349
- Use of dispersants/detergents in diesel injector keep-clean and clean-up studies Herbstman S. Virk K. SAE 912330
- Cummins L10 injector depositing test to evaluate diesel fuel quality Gallant T.R. Cusano C.M. Gray J.T. Strete N.M.
- Diesel fuel properties and additive effects on DI injector deposit formation Claar K.G. Blythe G.H. Pocinki S.B. SAE 932738
- Diesel additive technology effects on injector hole erosion/corrosion, injector fouling and particle traps Caprotti R. Fowler W.J. Lepperhoff G. Houben M. SAE 932739
- The effects of fuel detergents on nozzle fouling and emissions in IDI diesel engines Reading K. Roberts D.D. Evans T.M. SAE 912328
- Benefits of multifunctional diesel fuel additives demonstrated in a fleet test Kochler D.E. Doglio J.A. SAE 872146