Exam 9: Automotive Engine Designs and Diagnosis

Describe the difference between torque and horsepower.

The crankshaft rotates ____________________ degrees in one piston stroke.

The ____________________ controls the movement of the valves.

Identify safety concerns when listening for engine noises with a stethoscope.

A four-stroke cycle engine requires at least _____ valves at the top of each cylinder.

What component of the engine determines the stroke?

To complete a four-stroke cycle in one cylinder, the crankshaft must rotate _____ degrees.

____________________ lobes open and close the engine valves.

Which V-type engine valve train design may use four camshafts?

A high engine compression ratio usually requires high octane fuel.

Describe a mid-engine transverse engine layout.

The flywheel stores some of the power produced by the engine during the power stroke to keep the pistons in motion during the exhaust, intake, and compression strokes.

Lack of combustion is always caused by a fault in the ignition system.

A cylinder leakage test measures the amount of leakage in the cylinder as a(n)____________________.

Name four things that could cause unequal cylinder power balance.

A crankshaft changes ____________________ motion to ____________________ motion.

In what type of engine is the intake valve held open longer than normal during the compression stroke?

Diesel engines are being discussed. Technician A says diesel engines have a distributor-type injection pump. Technician B says diesel engines have a common fuel rail and the injectors are controlled by the computer. Who is correct?

Two technicians are discussing diesel engines. Technician A says all diesel engines are fuel injected. Technician B says glow plugs help ignite the fuel when the engine is cold. Who is correct?

What is detonation?