WorksheetsModern ignition systems (DIS)
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
The below image shows one of the main ignition components. What is its name?
a)
Spark plug
b)
HT lead
c)
Coil pack
d)
Lambda sensor
2.
On which stroke does the above component ignite the fuel/air mixture?
a)
Compression stroke
b)
Power stroke
c)
Induction stroke
d)
Exhaust stroke
3.
The below image shows one of the main components used in an older ignition system. What is its name?
a)
Distributor
b)
Coilpack
c)
Rotary injection pump
d)
Coil
4.
Modern ignition systems no longer use the above component and are known as DIS, what does the acronym DIS mean?
a)
Distributorless Ignition System
b)
Distributor Ignition System
c)
Digital Ignition System
d)
Digitized Ignition System
5.
The below diagram shows an earlier and commonly used type of DIS, what is part 2 known as?
a)
Coilpack
b)
Pencil coil
c)
Ignition coil
d)
ECU
6.
The below diagram shows an earlier type of DIS, what is part 4 known as?
a)
ECU
b)
Battery
c)
Ignition switch
d)
Pulse generator
7.
The below diagram shows an earlier type of DIS, what is the name of the wires/cables that connect the coilpack to the spark plugs?
a)
HT leads
b)
King leads
c)
Spark leads
d)
Coil lead
8.
The component referred to in question 3 controlled the firing order (order in which the cylinders fire). In a modern DIS as shown below which component performs this function?
a)
ECU
b)
Coilpack
c)
Knock sensor
d)
Ignition switch
9.
The below diagram shows an earlier type of DIS, this system is also known as wasted spark. Which of the following statements is true?
a)
Cylinders 1 & 4 (same for cylinders 2 & 3) fire/spark at the same time
b)
When cylinder 2 fires/sparks it is on compression and cylinder 3 is on induction so the spark is wasted
c)
Only one cylinder fires at a time. Typically the firing order would be 1, 3, 4, 2 or 1, 2, 4, 3
d)
When cylinder 1 fires/sparks it is on compression cylinder 4 is on power so the spark is wasted
10.
The below diagram shows an earlier type of DIS. Which components would need to be removed in order to access/replace the spark plugs?
a)
HT leads
b)
Coilpack
c)
Pencil coil
d)
Cam cover
11.
The below diagram shows an earlier type of DIS. How many cylinders does the engine below have?
a)
4
b)
5
c)
3
d)
6
12.
The component below is a key sensor fitted to the ignition system. It sends signals to the vehicles ECU, what is known as?
a)
Knock sensor
b)
Lambda sensor
c)
Pulse generator
d)
TPS sensor
13.
The component below is a key sensor fitted to the ignition system. What does the ECU do with signals from the below sensor?
a)
Adjust the ignition timing (advance or retard)
b)
Increase the duration of the spark (pulse width)
c)
Adjust the AFR (Air Fuel Ratio)
d)
Adjusts the firing order (order in which the cylinders fire)
14.
The below diagram shows a later type of DIS, what is the more commonly used name for this ignition system? There may be more than one correct answer.
a)
One coil per cylinder
b)
Coil on plug ignition system
c)
Coilpack ignition system
d)
Wasted spark ignition system
15.
The below diagram shows an later type of DIS. Which components would need to be removed in order to access/replace the spark plugs?
a)
HT leads
b)
Coilpack
c)
Pencil coils
d)
Cam cover
16.
The below diagram shows an later type of DIS. How many cylinders does the engine below have?
a)
3
b)
6
c)
4
d)
5
17.
The below diagram shows a later type of DIS, what is part 2 known as
a)
Pencil coil
b)
Coilpack
c)
Ignition coil
d)
HT (High Tension) leads
18.
The below component is a key component in a modern DIS. What is the name of the component?
a)
Pencil coil
b)
Coilpack
c)
Ignition coil (wet)
d)
HT (High Tension) leads
19.
Why is it important that air/fuel mixture is ignited at the correct time?
a)
To provide minimum power
b)
To ensure complete combustion
c)
To ensure all cylinders fire at the same time
d)
To create engine knock
20.
During maintenance on a hybrid vehicle orange cables are visible, what are these cables used for?
a)
These are high voltage cables.
b)
These are starter motor cables.
c)
These connect the auxiliary systems.
d)
These are used for the ignition system
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