Exam 15: Introduction to the Engine

Leakage past the piston rings is called ____.

The space where the ends of the piston ring come together when the ring is installed in the cylinder is MOST-Likely referred to as a(n):

____________________ are machined surfaces that ride inside of cam bearings. On pushrod engines, cam bearings are pressed into bores in the block.

The term combustion chamber refers to the chambers in the cylinder heads that are located just above the pistons.

Intake and exhaust valves are made of the same materials.

What is the purpose of counterweights on the crankshaft?

A fuel injection system supplies fuel to join with the air that flows through the ____________________ of the manifold.

The area of the block where the crankshaft and bearings are located is called the ____.

The short block for a pushrod engine includes all of the following EXCEPT:

A simple reciprocating engine has a cylinder, a piston, a connecting rod, and a crankshaft.

____________________ are mounted on top of the cylinder head. They take the up-and-down motion of the pushrod and transfer it to the valve.

Most vehicles since the early 1960s have fuel injection systems with computer controls. The computer monitors the oxygen content in the vehicle's exhaust and then adjusts the fuel supply to provide the correct amount of fuel and air for each intake stroke.

The part that will MOST-Likely be used to close the valve after it has been opened by the cam lobe is the:

Which of the following is LEAST-Likely to be included in the engine's four-stroke cycle?

When the air-fuel mixture is measured by volume, there are 100,000 gallons of air for each gallon of gasoline.

While discussing pulleys, Technician A says that some engines use a vibration damper to minimize vibrations in the crankshaft that could cause it to crack or break. Technician B says that some engines do not use a damper. Instead they have a single-piece pulley with threaded holes to attach the drive belt pulley(s). Who is correct?

Which of the following parts is LEAST-Likely to be included in the valve train?

While discussing manifolds, Technician A says that exhaust manifolds must carry very hot exhaust gases so they are usually made of cast iron. Technician B says that some manifolds are constructed of steel tubing. Who is correct?

One mole of air weighs approximately ____________________ ounce(s).

What is the purpose of the flywheel?