Exam 67: Alternative Fuels

Producing liquid fuel from coal or natural gas usually uses which process?

Ethanol can be produced from what products?

Which is the most widely used alternative fuel?

Which of these is NOT a possible effect of using gasoline with alcohol additives?

Technician A says vehicles capable of using 100% ethanol are known as flex fuel vehicles. Technician B says these vehicles are unable to achieve 100 horsepower. Which technician is correct?

Of the alternative fuels listed in the text, which has the highest octane?

How much compressed natural gas (CNG) does it require to achieve the energy of one gallon of gasoline?

A vehicle burning CNG loses about ________ percent power as compared to gasoline.

An engine designed to burn CNG may include what design modifications?

Methanol is also called ________.

A flex-fuel vehicle has enhanced fuel system components that include all of these EXCEPT ________.

Liquefied petroleum gas (LPG) is also called ________.

Which alcohol is dangerous (toxic)?

Using an ethanol-enhanced or reformulated gasoline can result in reduced fuel economy.

Technician A says the stoichiometric ratio for gasoline is about 9.0:1. Technician B says the stoichiometric ratio for ethanol is about 9.0:1. Which technician is correct?

A flex-fuel vehicle uses the PCM to make adjustments to the engine according to the percentage of ethanol in the fuel. The PCM must adjust which engine settings?

The stoichiometric ration for CNG is ________.