CH 11 AUTO UPKEEP FUEL SYSTEM

What is used to clean the fuel entering the engine?

• CCV Filter

• PCV Valve

• Fuel Filter

• Air Filter

Fuel pumps are either..........

• mechanical or electric

• chemical or electric

• nuclear or electric

• thermal or electric

On many types of engines, what measures the volume (quantity) and mass (density) of the air entering the engine...

• temperature sensor

• mass airflow sensor

• knock sensor

• cooling fan sensor

Crude oil is a ____energy resource.

• renewable

• inexhaustible

• nonrenewable

• solar

What does it mean if a fuel is very volatile?

• is expensive

• has great lubricating abilities

• does not ignite easily

• ignites easily

What is the name of the technology that uses engine control systems to shut off the air-fuel mixture to some of the engine's cylinders when all the cylinders are not needed?

• cylinder deactivation

• powertrain control module

• blow-by

• distillation

Ultra-low sulfur diesel contains a maximum of_____parts-per million (ppm) of sulfur.

• 15

• 1500

• 150,000

• 15,000,000

Technician A says that gasoline is more volatile than diesel. Technician B says that distillation is the process used to refine crude oil. Who is correct?

• Technician A

• Technician B

• Both Technician A and Technician B

• Neither Technician A nor Technician B

Technician A says the higher the octane number of gasoline, the more it resists detonation. Technician B says that 93 octane is required for most cars. Who is correct?

• Technician A only

• Technician B only

• Both Technician A and Technician B

• Neither Technician A nor Technician B

Technician A says that an example oxygenate is sulfur. Technician B says that lead is used today in the United States to oxygenate fuel. Who is correct?

• Technician A only

• Technician B only

• Both Technician A and Technician B

• Neither Technician A nor Technician B