CRC (Coordinating Research Council)-Radian evaporative emissions model: EVAP 2. 0 annual report, 1987

Technical Report · Tue May 24 04:00:00 EDT 1988

OSTI ID:7063082

Kishan, S; DeFries, T H; Klausmeier, R

The Coordinating Research Council (CRC) contracted Radian Corporation to develop a computer model to characterize real-world evaporative emissions from motor vehicles. This is the first annual report under the contract. It explains the current CRC-Radian evaporative emission model which is names EVAP 2.0. The model expands upon the present EPA MOBILES3 emissions model to incorporate key factors affecting evaporative emission rates, including: representative urban driving patterns to characterize the probability of occurrence of trips during different times of the day; ambient temperatures for different areas and times of year on an hourly basis; fuel tank environments, including fuel weathering, fuel tank heating, and tank cool down; evaporative emissions defined as a function of RVP, ambient temperature, and fuel tank level; emissions of carbureted and fuel-injected vehicles in various states of repair. The model is intended to be used as a research tool and is highly modular, which allows it to be easily updated with new information.

• Research Organization: Radian Corp., Austin, TX (USA)
• OSTI ID: 7063082
• Report Number(s): PB-88-246194/XAB
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330700* -- Advanced Propulsion Systems-- Emission Control
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION
AUTOMOTIVE FUELS
COMPUTERIZED SIMULATION
DOCUMENT TYPES
EXHAUST GASES
FLUIDS
FUELS
GASEOUS WASTES
GASES
HYDROCARBONS
MATHEMATICAL MODELS
ORGANIC COMPOUNDS
POLLUTION
PROGRESS REPORT
SIMULATION
VEHICLES
WASTES
WEATHERING