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| Displacement(cc) |
| Displacement(cc) ＝π÷4×D2 × S × 0.001 × N |
π : the circular constant
D : Bore(mm)
S : Stroke(mm)
N : Number of the cylinder |
| Compression |
| Compression ＝(V2 ＋ V1)÷V2 |
V1 : Displacement per cylinder(cc)
V2 : Combustion room capacity(cc) |
| Compression rate ＝V1÷(V2 ＋ V3 ＋ V4)+1 |
V1 : Displacement per cylinder(cc)
V2 : Combustion room capacity(cc)
V3 : Gasket capacity(cc)
V4 : Piston crown capacity(cc) |
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Term |
SI unit |
Metric |
Converting Value (1[Metric unit]=X[SI unit]) |
Power |
N(newton) |
kgf |
1kgf = 9.80665N |
Torque
（Moment) |
N・m |
kgf・cm |
1kgf・cm = 0.0980665N・m |
Pressure |
Pa(pascal) |
kgf/cm2 |
1kgf/cm2 = 98.0665kPa=0.0980665MPa |
rpm |
1mmHg = 0.133322kPa |
Engine rotation |
r/min |
kgf/mm |
1rpm = 1r/min |
Spring rate |
N/mm |
cc |
1kgf/mm = 9.80665N/mm |
Volume |
L |
PS |
1cc = 1mL |
Efficiency |
W |
cal |
1PS = 0.735499kW |
Calorie |
W・h |
g/PS・h |
1kcal = 1.16279W・h |
mileage |
g/W・h |
|
1g/PS・h = 1.3596g/kW・h |
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| PRESSURE UNIT CONVERSION TABLE |
|
Pa |
bar |
kgf/cm2 |
atm |
mmH2O
/ mmAq |
mmHg
/ Torr |
1 |
1 ×10-5 |
1.019 72×10-5 |
9.869 23×10-6 |
1.019 72×10-1 |
7.500 62 ×10-3 |
1×105 |
1 |
1.019 72 |
9.869 23×10-1 |
1.019 72×104 |
7.500 62×102 |
9.806 65×104 |
9.806 65×10-1 |
1 |
9.678 41×10-1 |
1 × 104 |
7.355 59×102 |
1.013 25×105 |
1.013 25 |
1.033 23 |
1 |
1.033 23×104 |
7.600 00×102 |
9.806 65 |
9.806 65×10-5 |
1 × 10-4 |
9.678 41×10-5 |
1 |
7.355 59×10-2 |
1.333 22×102 |
1.333 22×10-3 |
1.359 51×10-3 |
1.315 79×10-33 |
1.359 51×10 |
1 |
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| Fahrenheit |
0°C : 32°F
100°C : 212°F |
| F ＝9/5×C +32 |
| Centigrade |
| C ＝5/9 (F-32) |
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Factor |
|
Prefix |
Symbol |
109 |
1,000,000,000 |
giga |
G |
106 |
1,000,000 |
mega |
M |
103 |
1,000 |
kilo |
k |
102 |
100 |
hecto |
h |
10 |
10 |
deca |
da |
10-1 |
0.1 |
deci |
d |
10-2 |
0.01 |
centi |
c |
10-3 |
0.001 |
milli |
m |
10-6 |
0.000001 |
micro |
μ |
10-9 |
0.000000001 |
nano |
n |
10-12 |
0.000000000001 |
pico |
p |
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Unit |
Metric |
1mile |
1.609km |
1inch |
25.4mm |
1feet |
30.48cm |
1yard |
91.44cm |
350cu.in |
(2.54) x 350cc |
1gallon |
3.7853L |
1lb |
0.4536kg |
1libs-ft |
0.1383kg-m |
1oz |
28.35g |
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Unit |
|
1PS |
735.4kw |
100PS |
73.5kw |
1kw |
1.36PS |
100kw |
136PS |
Horse power(PS) 2πTN÷75x60 = TN÷716 |
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|
milli |
inch |
milli |
inch |
milli |
inch |
6 |
|
|
1/2 (12.7) |
|
3/4 (19.05) |
| |
1/4 (6.35) |
13 |
|
20 |
|
7 |
|
14 |
|
|
13/16 (20.64) |
| |
5/16 (7.94) |
|
9/16 (14.29) |
21 |
|
8 |
|
15 |
|
22 |
|
9 |
|
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5/8 (15.88) |
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7/8 (22.23) |
| |
3/8 (9.53) |
16 |
|
23 |
|
10 |
|
17 |
|
|
15/16 (23.81) |
11 |
|
|
11/16 (17.46) |
24 |
|
| |
7/16 (11.11) |
18 |
|
25 |
|
12 |
|
19 |
|
|
1 (25.4) |
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Type |
Tensile strength
(kg/mm2) |
Specific gravity
(20°C) |
Heat conductivity
(20°C) |
Thermal expansion
coefficient (x 10-6) |
Aluminium |
(A5052)
(A2017) |
27
43 |
2.68
2.79 |
0.33
0.32 |
23.8
23.6 |
Copper alloy |
(Phosphor bronze)
(Beryllium) |
33
116〜138 |
8.89
8.36 |
0.90
0.25 |
17.8
17.0 |
Nickel alloy |
(Inconel) |
56 |
8.4 |
0.04 |
14.4 |
Titan |
|
35〜56 |
4.5 |
0.04 |
8.9 |
Steel |
(SCM435)
(S45C) |
95
70 |
7.8
7.8 |
0.14
0.14 |
11.7
11.7 |
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| GRAPH OF DEMANDED OUTPUT & INJECTOR FLOW |
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| (Atmospheric Conditions of : 0.75) |
|
 |
If demanded output of RB26 engine is 540PS, 90PS per one cylinder has to be achieved since it is 6cylinder engine. Applying this number to the graph, use of more than 560cc per one cylinder (600cc) is leaded. |
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