Engine building software free

For the sample engines provided, nearly all information was obtained on the Internet. Necessary information not obtained was estimated or assumed. Also entered is engine setup information, such as head gasket thickness, cam and ignition timing, and more, giving you the information you need to optimize your build.

The first one, the simulation window, writes out informative information as the application runs. The first GUI that comes up is the main engine selection or creation window. You can also create a new engine file and save it with your own name. For display purposes we will select LS7 now by clicking on it.

We could hit the Piston to Valve Clearance button now to compute the necessary parameters for Dyno Performance and then Drag Race Performance, or we can review the populated fields of each module which we will do now.

This is needed for piston to valve clearance and is a number that is obtained from the head manufacturers. Or, you can measure it yourself. If you were to place the head on a table with the springs up and disconnected one of the intake springs and let the valve drop, this would be the distance it would fall from the seat before hitting the table.

The lobe separation and cam advance are in cam degrees. Notice also that the durations for 0. A 6 th order polynomial-spline fit is used to approximate the lobe profile in between the points entered to get a better estimate of the piston to valve clearance through the complete engine cycle.

This particular cam is set centered at 0 degrees advance. Cam timing plays an important role in engine performance and piston to valve clearance. Advancing the cam increases the dynamic and effective compression ratios, but decreases intake clearance and increases exhaust clearance. Retarding the cam does the opposite. This information is needed to include the effects of valve float if it occurs, for determining the dynamic piston to valve clearance and valve lift. Valve float can occur if the valve springs in the head are insufficient in force to close the valves in agreement with the camshaft, affecting performance and possibly causing severe engine damage.

Masses in grams are also needed for the valves, springs, retainers, rockers, pushrods, and lifters, for modeling the Valvetrain Dynamics. These values were estimated for the most part for the LS-7 engine, but would be adequate. Intake and Exhaust Valve Lashes were included to more accurately determine total lift and intake and exhaust clearances.

The program can handle flat-top, domed, or dished pistons. The pistons entered below are flat top with 5. For clarification on the pocket depths, refer to this. Notice that the pocket depth is given relative to the piston deck flat portion of the piston. This is used to estimate the piston to valve clearances and compression ratio. Valve relief diameters must be larger than valve diameters for obvious reasons.

This is why entering the correct pocket depths the depth below the flat portion of the piston where the valves would go is so important. This one is 8 degrees advanced, indicated by From this the simulation delivers up to 23 data outputs per RPM and 18 special calculations, such as displacement, valve flow areas, dynamic compression ratios, etc.

The program includes utility calculation screens that help you model compression ratios and other auxiliary calculations needed to support the simulator. It plots torque and horsepower per RPM graphically with up to seven overlays for run-to-run comparisons.

From input or selected cam data it shows valve lift per crankshaft degree to help you evaluate cam profiles. An optimize feature automatically chooses best port or runner size and length and can spec for best peak torque and horsepower or average torque and horsepower. You can input any 0.

Engine Analyzer Plus The mid-level program has ten additional features, including diesel and alternate fuel modeling. The software adjusts spark for best power and predicts knock and retard timing to prevent detonation. This version incorporates 20 additional inputs including the ability to check valve-to-piston clearance and full cylinder head flow data. You can input flow volumes with up to 8 valve-lift increments. Each of the 23 outputs calculated for each RPM can also be graphed with 7 overlays.

And you can substitute new engine mods right in the graph screen and immediately see changes to the power curve. This version incorporates intake and exhaust port pressures based on Finite Difference wave simulation. It specifies net flow over the entire valve event including net trapped fresh mass charge and heat transfer to all chamber components.

Simulations take longer in this version because of the greater number of calculations requested of the processor. Precise information calculated includes piston position, valve opening and flow, cylinder pressure, instantaneous torque, and piston thrust in onetenth- degree increments up to degrees to complete a full cycle. Successive cycles are repeated to obtain a constant result based on wave tuning that splits intake and exhaust runners into small sections to precisely calculate pressure, velocity, momentum, friction losses, heat transfer, and other pertinent information that can require up to 60 seconds or more of calculation time, depending on the degree of accuracy you have specified.

The program auto-selects best spark advance or you can input a forced spark curve with 6 break points that you can specify produces best power for the desired burn rate. It also calculates a knock index so you can model with trace detonation. While no program can fully predict conditions that may cause intermittent detonation in one or more cylinders, Engine Analyzer Pro delivers highly accurate predictions based on qualified assumptions.

With up to 42 special calculations, it includes cam specs at 0. In this version you can overlay up to 12 different tests for comparison purposes. Upon completion you can pinpoint the best power output and identify the components and optimum tuning specs that produced them. Another unique feature is the ability to optimize for the Engine Masters Challenge requirements so you can predefine and model your proposed entry.

Engine Analyzer Pro is one of the most robust, affordable simulation programs available. The best part is an auto-linking component that automatically provides an ET, foot time, MPH, lap time, and miles per gallon right in the Engine Analyzer program for instant verification of results. When visiting www. Racing Systems Analysis www. Quarter Jr. Engine Jr. It requires input of basic information including bore, stroke, rod length, compression ratio, cam specs, manifold type, valve specs, carb specs, carb type, and fuel.

In return it provides peak horsepower, torque, power per cubic inch, and recommended redline and shift points.

It also calculates minimum port cross-sectional area, mean flow velocity, and CFM per square inch of cross section. Four auxiliary worksheets help you calculate compression ratio and estimate carb and throttle body flow, cylinder head flow, and minimum cross section at the intake valve throat. In addition to performance results it also provides a graphic dyno curve with tabular horsepower and torque in rpm increments. Engine Pro takes it to the next level with an intake port flow worksheet that accommodates bench data input.

It helps you model intake and exhaust systems and allows you to examine intake ramming and wave tuning occurring in both tracts. It models port data and makes recommendations on valve size based on your inputs.

It also provides extensive mechanical details regarding piston speed versus RPM and piston position versus crank angle. The intake flow detail screen uses your input data to determine piston flow demand relative to valve timing. Each Budget Pack Collection contains the following software:.

Virtual Engine Dyno - The industry standard for dyno simulation. Camshaft Selection Utility - Pick the best camshaft and compression ratio. Engine Builder 3D - Simulate building your engine on your computer. Hone your reaction times and dial your ET as you strive for the perfect run in the Bracket classes or drive on the edge of control in the Heads Up Outlaw class.

The first product of its kind for engine builders and performance enthusiasts Previously affordable only to large corporations with teams of dedicated engineers, our new 3D Virtual Engine Building Program is designed with the individual user in mind.

Export engine data files directly to Virtual Engine Dyno Simulation. Easily Design new and analyze existing engine components and combinations such as engine blocks, crankshafts, connecting rods, pistons, camshafts, valve train, cylinder heads and more. Limited Time Sale! Visit our Purchase and Download page to get your copy today before time runs out! Engine Performance Calculator Download!

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