AFR yang dihasilkan bahan bakar 90 Premium + 10 Super fuel
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
• P = 200,12 watt = 0,2001 kW
⇒
n= 4362,5rpm ṁf = 0,708 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
����� 0,708
����� ��� = 14,25
• P = 400,45 watt = 0,4005 kW
⇒
n= 4432rpm ṁf = 0,804 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
����� 0,804
����� ��� = 12,55
• P = 601,29 watt = 0,6013 kW
⇒
n= 4525 rpm ṁf = 0,924 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
����� 0,924
����� ��� = 10,92
Universitas Sumatera Utara
• P = 800,45 watt = 0,8005 kW
⇒
n= 4585 rpm ṁf = 0,888 kgjam
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
����� 0,888
����� ��� = 11,36
• P = 1001 watt = 1,001 kW
⇒
n= 1064 rpm ṁf = 1,05 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
����� 1,05
����� ��� = 9,61
• P = 954,02 watt = 0,954 kW
⇒
n= 4359 rpm ṁf = 1,08 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
����� 1,08
����� ��� = 9,34
Tabel 4.21 AFR hasil pengujian dengan bahan bakar 90 premium + 10 super fuel
Bahan Bakar
Parameter Performansi
Jumlah lampu 100 Watt 2
4 6
8 10
12 90
premium + 10 super
fuel n rpm
4362,5 4432
4525 4585
1064 4359
P Watt 200,12
400,45 601,29
800,45 1001
954,02 ṁa kgjam 10,087 10,087 10,087 10,087 10,087 10,087
ṁf kgjam 0,708 0,804
0,924 0,888
1,05 1,08
AFR 14,25
12,55 10,92
11,36 9,61
9,34
4.6.4 AFR yang dihasilkan bahan bakar 85 Premium + 15 Super fuel