# Engine Design Calculator

## Automobile - Car

Solving For Engine Compression Ratio

#### Inputs:

 compression chamber volume (CCV) meter^3barrel UKbarrel US drybarrel US federalbarrel US liquidbarrel US oil petroleumbushel UKbushel US drycentimeter^3cord firewoodcord foot woodcup Canadacup metriccup USdeciliterdecimeter^3foot^3gallon UKgallon US liquidinch^3kilometer^3litermillilitermillimeter^3ounce UK fluidounce US fluidpint UKpint USquart UKquart USsteretablespoon UKtablespoon USteaspoon UKteaspoon USyard^3
 head gasket volume (HGV) meter^3barrel UKbarrel US drybarrel US federalbarrel US liquidbarrel US oil petroleumbushel UKbushel US drycentimeter^3cord firewoodcord foot woodcup Canadacup metriccup USdeciliterdecimeter^3foot^3gallon UKgallon US liquidinch^3kilometer^3litermillilitermillimeter^3ounce UK fluidounce US fluidpint UKpint USquart UKquart USsteretablespoon UKtablespoon USteaspoon UKteaspoon USyard^3
 piston deck volume (PDV) meter^3barrel UKbarrel US drybarrel US federalbarrel US liquidbarrel US oil petroleumbushel UKbushel US drycentimeter^3cord firewoodcord foot woodcup Canadacup metriccup USdeciliterdecimeter^3foot^3gallon UKgallon US liquidinch^3kilometer^3litermillilitermillimeter^3ounce UK fluidounce US fluidpint UKpint USquart UKquart USsteretablespoon UKtablespoon USteaspoon UKteaspoon USyard^3

#### Conversions:

 BORE= 0 = 0inch
 STROKE= 0 = 0inch
 compression chamber volume (CCV)= 0 = 0inch^3
 piston deck volume (PDV)= 0 = 0inch^3

#### Solution:

 compression ratio (CR)= NOT CALCULATED

#### Other Units:

Change Equation
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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By Jimmy Raymond

Contact: aj@ajdesigner.com