AFR yang dihasilkan bahan bakar 95 Premium + 5 Super fuel
Sehingga: ��� =
ṁ
�
ṁ
�
��� = 10,087
����� 0,996
����� ��� = 10,13
Tabel 4.19 AFR hasil pengujian dengan bahan bakar 100 premium
Bahan Bakar Parameter
Performansi Jumlah lampu 100 Watt
2 4
6 8
10 12
100 premium
n rpm 4430
4470 4570
4660 4760
4460 P Watt
202,1 400,4
602,5 800
1002 940,3
ṁa kgjam 10,087 10,087 10,087 10,087 10,087 10,087 ṁf kgjam
0,612 0,708
0,816 0,768
0,924 0,996
AFR 16,48
14,25 12,36
13,13 10,92
10,13
4.6.2 AFR yang dihasilkan bahan bakar 95 Premium + 5 Super fuel
• P = 200,20 watt = 0,2002 kW
⇒
n= 4343 rpm ṁf = 0,672 kgjam
V
d
: 95 × 10
−6
�
3
V
c
: 10 × 10
−6
�
3
P
i
= 85 kPa R = 0,287 kJkg.K
T
i
= 333 K
�
�
= �
�
�
�
+ �
�
�. �
�
�
�
= 8595 × 10
−6
+ 10 × 10
−6
0,287 × 333 �
�
= 0,0000934 ��
��� − ����� Maka:
ṁ
�
= �0,0000934
�� ��� − ������
1 ��� �
3600 ���
60 ��� � �
1 �����
2 ��� �
ṁ
�
= 0,002802 �����
Universitas Sumatera Utara
ṁ
�
= 10,087 �����
Sehingga: ��� =
ṁ
�
ṁ
�
��� = 10,087
����� 0,672
����� ��� = 15,01
• 400,1 watt = 0,4001 kW
⇒
n= 4439 rpm ṁf = 0,78 kgjam
V
d
: 95 × 10
−6
�
3
V
c
: 10 × 10
−6
�
3
P
i
= 85 kPa R = 0,287 kJkg.K
T
i
= 333 K
�
�
= �
�
�
�
+ �
�
�. �
�
�
�
= 8595 × 10
−6
+ 10 × 10
−6
0,287 × 333 �
�
= 0,0000934 ��
��� − ����� Maka:
ṁ
�
= �0,0000934
�� ��� − ������
1 ��� �
3600 ���
60 ��� � �
1 �����
2 ��� �
ṁ
�
= 0,002802 �����
ṁ
�
= 10,087 �����
Sehingga: ��� =
ṁ
�
ṁ
�
��� = 10,087
����� 0,78
����� ��� = 12,93
Universitas Sumatera Utara
• P = 602,45 watt = 0,6024 kW
⇒
n= 4525 rpm ṁf = 0,9 kgjam
V
d
: 95 × 10
−6
�
3
V
c
: 10 × 10
−6
�
3
P
i
= 85 kPa R = 0,287 kJkg.K
T
i
= 333 K
�
�
= �
�
�
�
+ �
�
�. �
�
�
�
= 8595 × 10
−6
+ 10 × 10
−6
0,287 × 333 �
�
= 0,0000934 ��
��� − ����� Maka:
ṁ
�
= �0,0000934
�� ��� − ������
1 ��� �
3600 ���
60 ��� � �
1 �����
2 ��� �
ṁ
�
= 0,002802 �����
ṁ
�
= 10,087 �����
Sehingga: ��� =
ṁ
�
ṁ
�
��� = 10,087
����� 0,9
����� ��� = 11,21
• P = 801,06 watt = 0,8016 kW
⇒
n= 4632 rpm ṁf = 0,852 kgjam
V
d
: 95 × 10
−6
�
3
V
c
: 10 × 10
−6
�
3
P
i
= 85 kPa R = 0,287 kJkg.K
T
i
= 333 K
Universitas Sumatera Utara
�
�
= �
�
�
�
+ �
�
�. �
�
�
�
= 8595 × 10
−6
+ 10 × 10
−6
0,287 × 333 �
�
= 0,0000934 ��
��� − ����� Maka:
ṁ
�
= �0,0000934
�� ��� − ������
1 ��� �
3600 ���
60 ��� � �
1 �����
2 ��� �
ṁ
�
= 0,002802 �����
ṁ
�
= 10,087 �����
Sehingga: ��� =
ṁ
�
ṁ
�
��� = 10,087
����� 0,852
����� ��� = 11,84
• P = 1002,00 watt = 1,002 kW
⇒
n= 4734rpm ṁf = 1,02 kgjam
V
d
: 95 × 10
−6
�
3
V
c
: 10 × 10
−6
�
3
P
i
= 85 kPa R = 0,287 kJkg.K
T
i
= 333 K
�
�
= �
�
�
�
+ �
�
�. �
�
�
�
= 8595 × 10
−6
+ 10 × 10
−6
0,287 × 333 �
�
= 0,0000934 ��
��� − �����
Universitas Sumatera Utara
Maka: ṁ
�
= �0,0000934
�� ��� − ������
1 ��� �
3600 ���
60 ��� � �
1 �����
2 ��� �
ṁ
�
= 0,002802 �����
ṁ
�
= 10,087 �����
Sehingga: ��� =
ṁ
�
ṁ
�
��� = 10,087
����� 1,02
����� ��� = 9,89
• P = 962,46 watt = 0,9625 kW
⇒
n= 4437,5rpm ṁf = 1,056 kgjam
V
d
: 95 × 10
−6
�
3
V
c
: 10 × 10
−6
�
3
P
i
= 85 kPa R = 0,287 kJkg.K
T
i
= 333 K
�
�
= �
�
�
�
+ �
�
�. �
�
�
�
= 8595 × 10
−6
+ 10 × 10
−6
0,287 × 333 �
�
= 0,0000934 ��
��� − ����� Maka:
ṁ
�
= �0,0000934
�� ��� − ������
1 ��� �
3600 ���
60 ��� � �
1 �����
2 ��� �
ṁ
�
= 0,002802 �����
ṁ
�
= 10,087 �����
Universitas Sumatera Utara
Sehingga: ��� =
ṁ
�
ṁ
�
��� = 10,087
����� 1,056
����� ��� = 9,55
Tabel 4.20 AFR hasil pengujian dengan bahan bakar 95 premium + 5 super fuel
Bahan Bakar Parameter
Performansi Jumlah lampu 100 Watt
2 4
6 8
10 12
95 premium +
5 super fuel
n rpm 4343
4439 4525
4632 4734
4437,5 P Watt
200,20 401,01 602,45 801,06 1002,00 962,46 ṁa kgjam 10,087 10,087 10,087 10,087 10,087 10,087
ṁf kgjam 0,672
0,78 0,9
0,852 1,02
1,056 AFR
15,01 12,93
11,21 11,84
9,89 9,55
4.6.3 AFR yang dihasilkan bahan bakar 90 Premium + 10 Super fuel