Bridging the Present to the Future in Personal Transportation - The Role of Internal Combustion Engines 920721
The future of personal transportation will be shaped by population growth, urban congestion, environmental pollution, global warming, and the depletion of natural resources. Through evolutionary changes, future personal transportation will be comprised of a greater diversity of powerplants, fuels, and modes than currently exists. Reciprocating internal combustion engines, and in particular the spark-ignition homogeneous-charge variety, are likely to continue being the dominant powerplant in personal transportation if their real contribution to pollution can be controlled.
Key emissions control issues are as follows. For evaporative emissions, lengthy vehicle parking at high temperatures (resting losses) is a previously unaccounted for source of hydrocarbons, which will require better evaporative emissions control systems, better thermal management of the fuel system, and low volatility fuels. Sources of exhaust emissions, particularly carbon monoxide, that may be underestimated in current emissions inventories are those from cold and transient vehicle operation, such as severe accelerations. Results show that for vehicles equipped with homogeneous-charge internal combustion engines operating with closed-loop air-fuel ratio control systems, and using three-way catalysts, improved control of emissions during cold and transient operation will require improved thermal and air-fuel ratio management.
Citation: Gallopoulos, N., "Bridging the Present to the Future in Personal Transportation - The Role of Internal Combustion Engines," SAE Technical Paper 920721, 1992, https://doi.org/10.4271/920721. Download Citation
Author(s):
Nick E. Gallopoulos
Pages: 14
Event:
International Congress & Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Fuel Systems and General Emissions-SP-0910, SAE 1992 Transactions: Journal of Fuels & Lubricants-V101-4
Related Topics:
Emissions control
Air / fuel ratio
Exhaust emissions
Carbon monoxide
Three-way catalysts
Combustion and combustion processes
Thermal management
Emissions
Control systems
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