Question 1

A gasoline engine is called a(n) ____________________ engine, with an ignition system creating the spark.

Accepted Answer

spark ignition (S.I.),S.I.,spark ignition

Question 2

A head is called a(n) ____________________ when the intake and exhaust manifolds are on opposite sides on an in-line engine.

Accepted Answer

cross-flow head,cross flow head

Question 3

List the three most common combustion chamber designs and describe their shapes.

Accepted Answer

The most common combustion chamber designs include the hemi , the wedge , and the pent-roof . A wedge combustion chamber is shaped like a scalene triangle. A hemi combustion chamber is semi-spherical. A pent-roof combustion chamber is similar to a hemi, but like an equilateral triangle.

Question 4

The combustion chamber shape MOST-Likely to have a squish/quench area that causes movement (turbulence) of the air-fuel mixture and cooling of the gases to prevent abnormal combustion is:

Accepted Answer

A)   hemi
B)   wedge
C)   pent-roof
D)   scalene

Question 5

Which of the following statements is LEAST-Likely to be true?

Accepted Answer

A)   A diesel engine can run at idle with a very lean air-fuel mixture and can be about one-third more efficient on fuel.
B)   In diesel engines, the amount of air remains the same, and changing the fuel mixture controls speed and power.
C)   Diesels are difficult to start in cold weather.
D)   Diesels require less frequent oil changes than gasoline engines.

Question 6

What are the disadvantages of diesel engines?

Accepted Answer

The answer of What are the disadvantages of diesel engines?...

Question 7

Air-cooled engines are found on lawnmowers, motorcycles, and some older automobiles.

Accepted Answer

A) True 
 B)False

Question 8

The cam-in-block engine is called an overhead cam engine, and the cam-in-head design is called a pushrod engine.

Accepted Answer

A) True 
 B)False

Question 9

An in-line engine has all of its cylinders aligned in one row.

Accepted Answer

A) True 
 B)False

Question 10

Which is LEAST-Likely part of a rotary engine?

Accepted Answer

A)   rotor
B)   poppet valve
C)   spark plug
D)   crankshaft

Question 11

What are the advantages and disadvantages of the L-head engine?

Accepted Answer

The answer of What are the advantages and disadvantages of...

Question 12

What is the downside of electrolysis and how can it be prevented?

Accepted Answer

The answer of What is the downside of electrolysis and...

Question 13

While having a discussion about valves, Technician A says that higher compression is possible with the L-head. Technician B says that higher compression is achieved with the I-head because, unlike the L-head, the combustion chamber does not need extra volume to accommodate the valves. Who is correct?

Accepted Answer

A)   A only
B)   B only
C)   Both A and B
D)   Neither A nor B

Question 14

The cylinder that is MOST-Likely to be cast with left and right cylinder banks at a 90-degree angle to each other is:

Accepted Answer

A)   V4
B)   V6
C)   V8
D)   V10

Question 15

____________________ is the comparison between the volume of the cylinder and combustion chamber when the piston is at TDC and BDC.

Accepted Answer

The answer of ____________________ is the comparison between the volume...

Question 16

Any engine with an even number of cylinders has pairs of cylinders called ____________________.

Accepted Answer

The answer of Any engine with an even number of...

Question 17

The engine that is MOST-Likely to have two separate cam lobes to operate its intake and exhaust valves in each cylinder is:

Accepted Answer

A)   single overhead cam (SOH
C)  
B)   a pushrod engine
C)   dual overhead cam (DOH
C)  
D)   overhead cam (OH
C)

Question 18

The name ____ comes from the stratification, or layering, of different densities of air-fuel mixtures.

Accepted Answer

A)   stratified charge
B)   stratified combustion
C)   stratified turbulence
D)   stratified swirl chamber

Question 19

All of the following statements are true EXCEPT:

Accepted Answer

A)   The camshaft on I-head engines is located either in the cylinder head or in the cylinder block.
B)   The cam-in-block engine, called a pushrod engine, is the more popular type of valve operating arrangement for inline engines.
C)   OHC engines are popular for high-speed operation because they have fewer parts with less total weight than pushrod engines.
D)   Belt-driven OHC engines have become commonplace in today's engines.

Question 20

Automotive rotary engines have four rotors that rotate inside of a chamber that looks like a modified figure eight.

Accepted Answer

A) True 
 B)False

Exam 16: Engine Classifications and Advanced Transportation Technologies

A gasoline engine is called a(n) ____________________ engine, with an ignition system creating the spark.

A head is called a(n) ____________________ when the intake and exhaust manifolds are on opposite sides on an in-line engine.

List the three most common combustion chamber designs and describe their shapes.

The combustion chamber shape MOST-Likely to have a squish/quench area that causes movement (turbulence) of the air-fuel mixture and cooling of the gases to prevent abnormal combustion is:

Which of the following statements is LEAST-Likely to be true?

What are the disadvantages of diesel engines?

Air-cooled engines are found on lawnmowers, motorcycles, and some older automobiles.

The cam-in-block engine is called an overhead cam engine, and the cam-in-head design is called a pushrod engine.

An in-line engine has all of its cylinders aligned in one row.

Which is LEAST-Likely part of a rotary engine?

What are the advantages and disadvantages of the L-head engine?

What is the downside of electrolysis and how can it be prevented?

The cylinder that is MOST-Likely to be cast with left and right cylinder banks at a 90-degree angle to each other is:

____________________ is the comparison between the volume of the cylinder and combustion chamber when the piston is at TDC and BDC.

Any engine with an even number of cylinders has pairs of cylinders called ____________________.

The engine that is MOST-Likely to have two separate cam lobes to operate its intake and exhaust valves in each cylinder is:

The name ____ comes from the stratification, or layering, of different densities of air-fuel mixtures.

All of the following statements are true EXCEPT:

Automotive rotary engines have four rotors that rotate inside of a chamber that looks like a modified figure eight.