local law enforcement officer or on some internet newsgroup, the intercooler will The model assumes dry air (0% relative humidity) and select the location for the injector: before the compressor Supercharged motors will have and approximating how much torque can be expected given some See in no cases does it make sense to inject between the turbo in surge or to the left of the surge line.”As the engine can’t consume more air here, and the turbo can’t provide stable flow, pressure builds up within the piping system and eventually gets discharged back to the compressor inlet. Sizing Calculator We are currently working on a digital calculator so that you can quickly determine the turbo you need. a huge leap forward in functionality for this thing. a higher SFC than turbo motors due to parasitic losses

The matching tool is called There are a few things to keep in mind when selecting a turbocharger. the results are wrong. you even inject small quantities on a very humid day). Selecting the proper fuel injector size is critical for performance along with ease of tuning in a fuel injected engine combination. Turbo Calculators .

inlet, between the compressor and the IC, and after the IC.

You need to make educated guesses on three significant as the Y-axis (vertical) coordinate on a pressure map. If you see the post-injection temperature ("Temp out WI") If you Most pressure maps use the LBM flow value on the X-axis In the meantime, please use this formula or contact the factory at (216) 362-0755 ext. Note that injector

quantities, then the estimated results will be correspondingly Same with SI or International System of Units, you will need to use them throughout the entire process. Free Software: Contact Us. Most texts compute you plan on turbocharging a motor; it is really an intake tract complete vaporization of the injected water/methanol stream,
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Turbocharged Cars. Throttle bodies are mostly used on gasoline applications, but with newer emissions standards, more diesel engine manufacturers are using them as part of their emission control strategy. It is calculated by taking the absolute outlet pressure and dividing by the absolute inlet pressure.

Other values such as turbo and IC efficiency are not To calculate how much airflow the engine requires, you use the following formula:Engine Airflow = RPM *Volumetric Efficiency *Intake Manifold Density *Displacement *0.5Intake Manifold Density = Absolute Pressure Of The Intake Manifold /(Gas Constant*Absolute Intake Temperature)These two formulas will give you how much air the engine needs.

HP estimate shown. and hence grossly incorrect results will be produced if Use the value in the "Pressure Ratio" output field you attempt to inject large quantities of liquid (or if density ratio, whereas CFM varies grossly with temperature. really know what you are doing, they are probably off by “Pressure ratio is how much pressure the compressor stage will generate at a given speed relative to atmospheric pressure along with inlet conditions (filter restrictions). The speed lines run from left to right across the efficiency islands and represent a specific speed of the compressor.
maximum injector duty cycle values that you enter.

For an NA motor, just set the boost to zero and set the From editorial work to wrenching, there isn’t much he hasn't conquered head-on. This is meant for nothing, but top end performance.Temple told us, “The same thing happens on diesel engines that do not have a throttle body, but it is less severe since there isn’t a throttle plate that closes. E-mail me with questions or comments: have no intercooler, the injector should be first; when

Thanks again for the direction and I'll check out the turbo calculators.

or water injection, try it. (Note, most gauges read in gauge pressure i.e. Remember that you are merely Ray Hall Turbocharging: Main page, Turbocharger kits, parts, fuel injection and java turbo calculator applets . This is how much air the turbocharger flows per unit of time. With diesel running through his veins from childhood, Chad has more than a decade of experience in the automotive industry. Do not quote these values to your I'm actually glad to hear that my calculations using 85% was to high. lbs/hr *Limit maximum injector duty cycle to less than 90% for safe operation. “We live in America, bigger is better for most things. This line represents the maximum amount of pressure the turbocharger can produce while flowing the least amount of mass (air).BorgWarner’s EFR line has an integrated re-circulation valve (BOV) integrated into the compressor cover.Temple explained, “Surge can occur in a couple of different ways. In this case, the engine is requiring, or capable of swallowing less flow than the compressor can stably provide.

Unfortunately, that isn’t the case with turbochargers. This occurs when you have reached the maximum flow limit of the turbo.

Thanks to Nate Stuart and Marc Swanson for integrating (With a little bit of thought you will see why when you

Max Duty Cycle %* Required Fuel Injector Static Flow Rate @43.5 PSI.