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Engine Design Calculator
Automobile - Car
Solving For Engine Compression Ratio
Inputs:
Conversions:
| BORE | = | 0 | = | 0 | inch | |
| STROKE | = | 0 | = | 0 | inch | |
| compression chamber volume (CCV) | = | 0 | = | 0 | inch^3 | |
| head gasket volume (HGV) | = | 0 | = | 0 | inch^3 | |
| piston deck volume (PDV) | = | 0 | = | 0 | inch^3 |
Solution:
| compression ratio (CR) | = | HAS NOT BEEN CALCULATED |
Other Units:
Change Equation
Select to solve for a different unknown
Select to solve for a different unknown
 |
volumetric efficiency |
 |
cubic inch displacement |
 |
cubic inch displacement |
 |
air flow rate |
 |
head gasket volume |
 |
piston deck volume |
 |
compression ratio |
 |
fuel system injector size per horsepower |
Where
| VE | = | volumetric efficiency |
| CFM | = | engine air flow rate - cubic feet per minute |
| CID | = | engine displacement, size or volume - cubic inches |
| RPM | = | engine speed - revolutions per minute |
| NOC | = | number of cylinders |
| BORE | = | length |
| STROKE | = | length |
| HGV | = | head gasket volume |
| HGCT | = | head gasket compressed thickness |
| PDV | = | piston deck volume |
| DPD | = | deck to piston distance |
| VPD | = | volume of piston depressions |
| VPB | = | volume of piston bumps |
| SV | = | swept volume |
| CR | = | compression ratio |
| CCV | = | combustion chamber volume |
| ISH | = | injector size per horsepower |
| HP | = | horsepower |
References - Books:
See 3 on reference page
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