Exam 28: Gasoline, Diesel and Other Fuels

Crude oil is separated into its basic chemical compounds through the process of_____ during which the crude oil is heated to about 1,200°F and vaporized. The different chemical compounds condense at different temperatures as the vapor passes through a cooling tower.

The higher the octane rating of gasoline, the more the engine will have a tendency to knock.

Which of the following are characteristics of burning LP-gas?

A gasoline engine provides more torque at lower speeds than an electric motor.

While discussing common rail fuel injection systems: Technician A says the individual injectors are activated by the high pressure present in the fuel rail. Technician B says some late-model CR systems have an intensifier in the injector that allows for an increase in fuel pressure. Who is correct?

The volatility of gasoline affects all the following performance characteristics EXCEPT:

The diesel fuel's antiknock quality is measured by the cetane rating.

Ethanol decreases CO emissions due to the higher oxygen content of the fuel.

Describe the term "Reid vapor pressure (RVP)."