Exam 9: Automotive Engine Designs and Diagnosis

What is the problem with incorrect valve timing?

Describe an overhead valve engine.

Some diesel engines operate on the two-stroke cycle principle.

A ____________________ test is used to detect if all the cylinders are producing the same amount of power

The camshaft can be located either in the cylinder block or in the cylinder head.

Front engine, longitudinal layout is being discussed. Technician A says this layout is used in rear-wheel drive vehicles. Technician B says this layout is used in some front-wheel drive vehicles. Who is correct?

Describe an inline engine.

There is no such thing as a W engine configuration.

How many degrees of crankshaft rotation does it take to complete one complete engine cycle in a 4-stroke engine?

What is compression ratio?

How can cam timing be checked?

A(n)____________________ mounted engine sits sideways in the engine compartment.

Two technicians are discussing compression testing on a hybrid vehicle equipped with an Atkinson cycle engine. Technician A says the compression reading of an Atkinson cycle engine is normally higher than a conventional engine. Technician B says a scan tool may be needed to perform the compression test. Who is correct?

Oversquare engines are capable of running at higher speeds and can have larger valves than undersquare engines.

Identify four types of fuel currently used in automotive engines.

The stratified charge engine combines the features of both the gasoline and diesel engines.

____________________ plugs are used to warm the combustion chamber of a cold diesel engine.

Engine torque always increases with engine rpm.

A wet compression test is performed on an engine after a dry compression test revealed low compression on one cylinder. If the compression on the low cylinder rises, it indicates _____.

Gasoline and diesel engines are classified as external combustion engines.