Compressed Natural Gas (CNG) and Its Applications

The video explores compressed natural gas (CNG) as an alternative to biofuels, highlighting its use in transportation. It explains the differences between CNG and diesel engines, emphasizing CNG's cleaner emissions and environmental benefits. The economic aspects of transitioning to CNG are discussed, noting the lower fuel costs but higher initial investment. The potential impact of converting city buses and trucks to CNG is considered, though it is noted that CNG will not completely replace oil.

What is CNG and how is it similar to the gas used in homes?

• Compressed Natural Gas, similar to natural gas used in stoves

• Compressed Natural Gas, similar to propane

• Compressed Natural Gas, similar to kerosene

• Compressed Natural Gas, similar to butane

What is the main difference between a CNG engine and a diesel engine?

• CNG engines are quieter

• CNG engines use a different type of fuel

• CNG engines have more parts

• CNG engines are larger

What are the emissions like from a CNG engine compared to a diesel engine?

• CNG engines emit the same amount of smoke

• CNG engines emit less smoke and particulates

• CNG engines emit more smoke

• CNG engines emit more carbon monoxide

What is one of the main economic benefits of using CNG over diesel?

• CNG is more expensive per mile

• CNG is cheaper per mile

• CNG has a higher initial cost

• CNG requires less maintenance

What is a significant cost factor when transitioning to CNG?

• Cost of new engines

• Lower fuel costs

• Higher fuel costs

• Cost of compressors

Why might CNG be economically attractive for vehicles used frequently?

• Lower initial cost

• Lower energy cost over time

• Higher fuel efficiency

• Less maintenance required

What type of vehicles are ideal for CNG usage?

• Personal cars

• Heavy-duty vehicles and buses

• Motorcycles

• Boats

What is the impact of converting all city bus fleets in America to CNG?

• Significant reduction in total diesel usage

• Minimal impact on total diesel usage

• Increase in diesel usage

• No change in diesel usage

Which other types of vehicles could benefit from CNG conversion?

• Only city buses

• Only personal cars

• Only motorcycles

• Over-the-road trucks and delivery trucks

Can CNG completely replace oil as a fuel source?

• No, it is not a viable fuel source

• Yes, but only for personal vehicles

• No, it can only supplement oil

• Yes, it can replace oil entirely