Improving Fuel Economy by Computer Control of a Diesel Engine and Transmission 891838
A diesel engine coupled to a CVT (Continuously-Variable Transmission) was computer controlled to maintain constant CVT output speed. The engine operated on power demand on a torque-speed schedule giving low BSFC. The engine-CVT-computer combination is viewed as an augmented engine, to which a conventional power train can be added to produce required vehicle speeds. On farm tractors, the pto (Power Take Off) shaft and other functions requiring constant speed would be driven by the CVT output shaft. Fuel savings with the augmented engine depend on engine load; at half load or less, a prototype augmented engine produced fuel savings of 15% or more.
Citation: Goering, C., Gui, X., and Buck, N., "Improving Fuel Economy by Computer Control of a Diesel Engine and Transmission," SAE Technical Paper 891838, 1989, https://doi.org/10.4271/891838. Download Citation
Author(s):
C. E. Goering, X. Q. Gui, N. L. Buck
Affiliated:
Agricultural Engineering Department University of Illinois
Pages: 12
Event:
1989 SAE International Off-Highway and Powerplant Congress and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SAE Transactions Journal of Passenger Cars-V98-6
Related Topics:
Diesel / compression ignition engines
Agricultural vehicles and equipment
Continuously variable transmissions
Fuel economy
Transmissions
Railway vehicles and equipment
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