Automobile Gasoline Engine Efficiency - Casio fx-7400G PLUS Booklet

E-4 Automobile Gasoline Engine Efficiency
Exercise
The following is a table of fuel efficiency measurement results for an automobile gasoline
engine. Draw a graph of the rate of change in the data.
■ Measurement Results
Sample
■ Graphic Calculator Operation
1. Data Input
From the Main Menu, enter the STAT Mode.
2. Engine Speed – Torque Graph: Graph 1
1
(GRPH)
[
4
(SET)
Stat Graph 1: Make List 2 the YList.
Engine Speed
n [rpm]
1 1040
2 1505
3 2000
4 2560
5 3020
6 3500
7 4010
Torque
Output
T0 [kgf . m]
N0 [PS]
7.05 10.24
7.51 15.79
7.78 21.74
7.88 28.17
7.58 32.00
7.27 35.53
6.61 37.02
Input the data into List 1 to List 4.
List 1: Engine speed
List 2: Torque
List 3: Output
List 4: Fuel Efficiency
Q
1
(GRPH)
1
(GPH1)
– 7 –
Fuel Efficiency
f0 [gf/PSh]
327.66
279.61
257.26
240.67
233.02
233.15
241.72
Graph 1