MEMBER SUBMITTED PROJECT
Robert S.
Topics Twelfth Grade,
Ecology
Hypothesis
Hypothesis: My hypothesis for this experiment is that adding higher levels of ethanol alcohol to gasoline, will not improve the run time of a motor.
Experimental Procedure
- Carefully add 50 milliliters of 87 octane gasoline blended with 10% ethanol alcohol to the empty fuel tank of the motor and measure how long the motor runs for.
- Remove any remaining fuel from the fuel tank.
- Repeat step 1and 2 for 89 and 93 octane gasoline blended with 10% ethanol alcohol.
- In a metric unit measuring container blend 45 milliliters of 87 octane gasoline commercially pre-blended with 10% ethanol alcohol, and 5 milliliters of 100% pure ethanol alcohol. This makes the mixture 20% pure ethanol alcohol and 80% gasoline.
- With your 20% pure ethanol alcohol and 80% gasoline mixture pour into the empty fuel tank and measure how long the motor runs for.
- Remove any remaining fuel from the fuel tank.
- Repeat steps 5-6 for 89 and 93 octane gasoline commercially pre-blended with 10% ethanol alcohol.
- In a metric unit measuring container blend 40 milliliters of 87 octane gasoline commercially pre- blended with 10% ethanol alcohol, and 10milliliters of 100% pure ethanol alcohol. This makes the mixture 30% ethanol alcohol and 70% gasoline.
- Remove any remaining fuel from the fuel tank.
- Repeat steps 8-9 for 89 and 93 octane gasoline commercially pre-blended with 10% ethanol alcohol.
- In a metric unit measuring container blend 35 milliliters of 87 octane gasoline commercially pre- blended with 10% ethanol alcohol, and 15 milliliters of 100% pure ethanol alcohol. This makes the mixture 40% ethanol alcohol and 60% gasoline.
- Remove any remaining fuel from the fuel tank.
- Repeat steps 12 and 13 for 89 and 93 octane gasoline commercially pre- blended with 10% ethanol alcohol.
- In a metric unit measuring container blend 30 milliliters of 87 octane gasoline commercially pre- blended with 10% ethanol alcohol, and 20 millimeters of 100% pure ethanol alcohol. This makes the mixture 50% ethanol alcohol and 50% gasoline.
- Remove any remaining fuel from the fuel tank.
- Repeat steps 12 and 13 for 89 and 93 octane gasoline commercially pre- blended with 10% ethanol alcohol.
Results
|
87 Octane
|
||||||
|
% alcohol
|
Trial 1
|
Trial 2
|
Trial 3
|
Trial 4
|
Trial 5
|
Average
|
|
10
|
212
|
211
|
209
|
208
|
211
|
210.2
|
|
20
|
219
|
195
|
99
|
117
|
176
|
161
|
|
30
|
201
|
146
|
237
|
0
|
0
|
116.8
|
|
40
|
0
|
0
|
0
|
0
|
0
|
0
|
|
50
|
0
|
0
|
0
|
0
|
0
|
0
|
|
89 Octane
|
||||||
|
% alcohol
|
Trial 1
|
Trial 2
|
Trial 3
|
Trial 4
|
Trial 5
|
Average
|
|
10
|
211
|
233
|
179
|
227
|
195
|
209
|
|
20
|
240
|
229
|
183
|
217
|
227
|
219
|
|
30
|
155
|
173
|
209
|
187
|
232
|
191
|
|
40
|
168
|
133
|
164
|
182
|
153
|
160
|
|
50
|
0
|
0
|
0
|
0
|
0
|
0
|
|
93 Octane
|
||||||
|
% alcohol
|
Trial 1
|
Trial 2
|
Trial 3
|
Trial 4
|
Trial 5
|
Average
|
|
10
|
237
|
211
|
232
|
234
|
212
|
225.2
|
|
20
|
232
|
244
|
192
|
213
|
168
|
209.8
|
|
30
|
142
|
237
|
151
|
145
|
150
|
165
|
|
40
|
0
|
0
|
0
|
0
|
0
|
0
|
|
50
|
0
|
0
|
0
|
0
|
0
|
0
|
*Units are in seconds
|
87
|
89
|
93
|
|
|
10
|
210.2
|
209
|
225.2
|
|
20
|
161
|
219
|
209.8
|
|
30
|
116.8
|
191
|
165
|
|
40
|
0
|
160
|
0
|
|
50
|
0
|
0
|
0
|
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