This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
In-Use Vehicle Survey of Fuel Consumption and Emissions on Dynamometer and Road
Annotation ability available
Sector:
Language:
English
Abstract
An upgraded vehicle fuel consumption/emission test facility is shown to be able to simulate on-road performance of cars up to wide open throttle operation. A procedure is described which permits dynamometer loads to be set so as to replicate the on-road, steady speed fuel consumption of each vehicle tested. A test program involving five driving cycles (schedules), three US and two Australian, and a range of other manoeuvres has been devised, to describe a wide range of on-road driving. The tests last one week and have been carried out on a fleet of almost 40 cars. Fuel and emission data has been logged at every half second interval of the tests. The overall test results only have been reported here. It is shown that there is considerable variability in the response of individual cars to changed test cycle. For the Australian test cycle fuel consumption is typically 15% higher than to US 75 FTP city test schedule. Corresponding increases in emissions are nearly 50% for HC, 90% for CO and 30%, for NOX. There is some evidence that vehicle designs are ‘tailored’ to the emission test cycle, and thus perform less well in more normal driving, There are indications that non-weight related improvements in recent model cars are more effective in reducing ‘on-road’ fuel consumption than reflected by the US city test schedule. Lastly the influence of ambient temperature on fuel consumption and emissions is shown to be significant.
Recommended Content
Authors
- H.C. Watson - Mechanical Engineering Department, University of Melbourne.
- E.E. Milkins - Mechanical Engineering Department, University of Melbourne.
- M.O. Preston - Mechanical Engineering Department, University of Melbourne.
- C. Chittleborough - Mechanical Engineering Department, University of Melbourne.
- P.A. Beardsley - Mechanical Engineering Department, University of Melbourne.
Topic
Citation
Watson, H., Milkins, E., Preston, M., Chittleborough, C. et al., "In-Use Vehicle Survey of Fuel Consumption and Emissions on Dynamometer and Road," SAE Technical Paper 850524, 1985, https://doi.org/10.4271/850524.Also In
References
- LUK J.Y.K. SIMS A.G. LOWNIE F.R. The Parramatta experiment - evaluating four methods of area traffic control Australian Road Research Board Research Report AIR 132 1983
- NEGUS B. FEHON D. SMELDT J. Fuel usage evaluation of linked signal systems SAE-A and ARRB Second Traffic Energy and Emissions Conference, paper 82159 1982
- WATSON H.C. MILKINS E.E. PRESTON M.O. CHITTLEBOROUGH C. ALIMORADIAN B. Predicting fuel consumption and emissions -transferring chassis dynamometer results to real driving conditions SAE paper 830435 1983
- WATSON H.C. HOLYOAKE P. KHAFIB S. An evaluation of models for predicting traffic emissions 1985 Australian Road Transport Forum (ARRB) 1985
- WATSON H.C. HILKINS E.E. BRAUNSTEINS J. Development of the Melbourne Peak Driving Cycle SAE-A and ARRB Second Traffic Energy and Emissions Conference, paper 82148 1982
- KRUSE R.E. HULS T.A. Development of the federal urban driving cycle SAE paper 730553 1973
- JOHNSON T.M. FORMENTI D.L. GRAY R.F. PETERSON W.C. Measurement of vehicle operation pertinent to fuel economy SAE paper 750003 1975
- LANSELL S.R. WATSON H.C. MILKINS E.E. Developement of a Melbourne cold-start driving cycle. Department of Mech. and Ind. Engineering, University of Melbourne Report T 59/83 1983
- WATSON H.C. PRESTON M.O. BEARDSLEY P. Establishing a vehicle's on-road steady speed performance on a non-level road Department of Mech. and Ind. Engineering University of Melbourne Report VEET 83/03 1983
- AUSTRALIAN TRANSPORT ADVISORY COMMITTEE, COMMITTEE ON MOTOR VEHICLE EMISSIONS (COMVE) Development of a long term national motor vehicle emission strategy Australian Department of Transport Canberra February 1981
- PRESTON M.O. Development of manual gear box shift points for the Melbourne peak cycle Department of Mech. and Ind. Engineering University of Melbourne, Report VEET 83/01 1983
- WIERS W.W. HOSTETTER T.D. Techniques of measurement, variation of effects of vehicle friction losses measured on electric dynamometers SAE paper 830436 1983
- McFARLANE I. CASS M.R. Comparison of ADR 37 and ADR 27A fuel consumption and emissions results SAE-Aust., SEPAC seminar Energy and the Society, paper 84002 1984
- MILKINS E.E. WATSON H.C. Comparison of urban driving patterns SAE-Japan et al. 2nd International Pacific Conference, paper 83 1983
- U.S. ENVIROMENTAL PROTECTION AGENCY Mobile Source Emission Factors EPA-400/9-78-006 1978
- WATSON H.C. MILKINS E.E. MARSHALL G. A simplified method for quantifying fuel consumption of vehicles in urban traffic SAE Aust. 40 1 6 13 1980
- MURRELL J.D. LOOS S. HEAVENRICH R. CHENG J. LE BARON E. Light duty automotive fuel economy…trends thru 1983 SAE paper 830544 1983
- KULP D.L. McKENNA J.C. Fuel economy ratings vs. road experience - an analysis of Ford's 1982 lease fleet SAE paper 831034 1983
- ECCLESTON B.H. HURN R.W. Ambient temperature and trip length - influence on automotive fuel economy and emissions SAE paper 780613 1978
- WATSON H.C. HOLYOAKE P.A. The effect of cold starting on a vehicle's fuel consumption and component temperatures 1st I.A.V.D. Congress, Geneva, paper 23 1984
- WASIELEWSKI P. EVANS L. CHANG M.F. Automobile braking energy, acceleration and speed in city traffic SAE paper 800795 1980