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Hybrid Electric Vehicles Midterm 1 – Questions With Complete Solutions
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Hybrid Electric Vehicles Midterm 1 – Questions With Complete Solutions
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Hybrid Electric Vehicles Midterm 1 – Questions WithComplete Solutions
Electric Vehicles Right Ans - one that is powered, at least in part, by
electricity
Perks of EVs Right Ans - clean and easy to use, low maintenance, available
infrastructure
EVs Motors Right Ans - high power to weight ratio, easy to control
Disadvantage of EVs Right Ans - limited range
Resurgence of EVs Right Ans - alternate energy sources, less emissions
from burning fuels
EV Types Right Ans - Battery Electric Vehicle (BEV)
Hybrid Electric Vehicle (HEV)
Plug in Hybrid Electric Vehicle (PHEV)
Fuel Cell Electric Vehicle (FCEV)
Regenerative Braking Right Ans - a method of braking in which energy is
extracted from the parts braked, to be stored and reused. uses electric
machine to slow down car
Use of HEV Right Ans - reduce the production of carbon dioxide by
reducing amount of fuel used
HEVs Right Ans - vehicles that have 2 sources of propulsion. (electric
motor, supplied energy by the high-voltage battery or ICE)
Carbon based fuels Right Ans - energy generated by burning organic fuel
that contains carbon.
Where does carbon come from? Right Ans - carbon is formed from
materials that were once alive on Earth. plants that die turn into coal, oil and
natural gas. animals of all type die end decay to form carbon fuels.
, Chemistry of Carbon - Based Emissions Right Ans - Carbon Monoxide (CO)
Carbon Dioxide (CO2)
Hydrocarbons (HC)
PM Right Ans - particulate matter, soot.
VOCs Right Ans - volatile organic compounds, a large group of carbon-
based chemicals that easily evaporate at room temperature
Common VOCs Right Ans - Acetone
Benzene
Ethylene glycol
Formaldehyde
Methylene chloride
Perchloroethylene
Toluene
Xylene
Greenhouse gasses (GHG) Right Ans - Gases in Earth's atmosphere that
trap heat near the surface
- Carbon dioxide
- Methane
- Nitrous Oxide
- Water Vapor
- Fluorinated Gases
Main challenges for BEVs Right Ans - high cost, limited driving range, long
charging time
Fuel consumption Right Ans - HEVs < ICEs
1 gallon (3.81) of gasoline is 108 miles (173 km) in an electric car, compared
to 33 miles (53 km) in an ICE
ICEs used in HEVs Right Ans - smaller engine displacement, 4-stroke cycle,
Atkinson cycle, crankshaft offset to reduce internal friction, doesn't use
conventional starter, use of low viscosity engine oil.
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